I describe the new approach to derive consistently regularized nuclear forces and currents in chiral EFT using the symmetry-preserving gradient flow method.
The Thomas Jefferson National Accelerator Facility (also known as JLab) is a User Facility of the Office of Science of the U.S. Department of Energy, a premium nuclear physics facility at the forefront of exploring the nature of matter. JLab’s Energy Upgraded Continuous Electron Beam Accelerator Facility (CEBAF) can deliver electrons up to 11 GeV with high polarizations onto unpolarized and...
The LHCb experiment is one of the four large experiments at the large hadron collider. It effectively covers the dominant kinematic region of b- and c-hadrons, and the detector is specifically designed to efficiently detect and identify the decay products of the heavy hadrons, making it an excellent laboratory for heavy hadron physics. LHCb keeps making significant contributions to hadron...
Quantum sensing technologies are opening new avenues to achieve unprecedented sensitivity and spatial resolution. Atomic Magnetometers are delivering important applications in biomedicine and fundamental physics. We propose a novel set-up consisting of multiple atomic magnetometers coupled together via a feedback magnetic field. We find the system exhibits rich nonlinear dynamics, including...
This talk will present three recent studies conducted using data samples collected by the BESIII detector at center-of-mass energies ranging from 3.51 to 4.95 GeV. The investigations encompass hidden-charm, open-charm, and baryon final states. Specifically, the studies include the following: 1) Investigation of e+ e- -> K+ K- psi(2S), measuring the Born cross-sections and searching for new...
Highly excited Rydberg atoms exhibit strong and long-range interactions, opening new possibilities for scalable quantum information processing. Rydberg atom array is highly programmable and capable of achieving high-fidelity quantum operations, making it an excellent candidate for large-scale quantum computers. Moreover, the interactions between Rydberg atoms provide a new avenue for...
In interacting many-body systems with chemical reactions, a key question is about how two-body decay depends on quantum correlations in interacting many-body systems. Here, we present a number of universal relations that directly connect two-body losses to other physical observables, including the momentum distribution and density correlation functions. These relations, which are valid for...
Since 2003, many hadrons that do not fit into the conventional quark model of qqbar mesons and qqq baryons have been discovered experimentally. Because most (if not all) of these states are located to the thresholds of pair of conventional hadrons, they have been conjectured to be hadronic molecules. There have been extensive theoretical and experimental studies to verify or refute the...
Non-Hermitian skin effect (NHSE) is a distinctive phenomenon in systems described by non-Hermitian Hamiltonians, where “bulk” eigenstates are spatially localized at the boundary of systems. In this talk, I will introduce a mechanism for particle separation based on their occupation conditions in the unit cells, which arises from the interplay between different skin accumulating channels and...
With the description that for a pure molecule state the effective range $r_0$ should satisfy the condition of $r_0 > 0$ and the fact that $r_0$ could be matched with the couplings related to momentum term in contact field theory, we can fit the low energy couplings up to NLO in the contact effective theory describing the 3 $P_c$ pentaquarks observed by LHCb in 2019 and finally get the...
Bound states in the continuum (BICs) are localized modes residing in the radiation continuum. They were first predicted for single-particle states, and became a general feature of many wave systems. In many-body quantum physics, it is still unclear what would be a close analog of BICs, and whether interparticle interaction may induce BICs. Here, we predict a novel type of multiparticle states...
We study the baryon-baryon interactions with strangeness $S = -2$ and corresponding momentum correlation functions in leading order covariant chiral effective field theory. The relevant low energy constants are determined by fitting to the latest HAL QCD simulations, taking into account all the coupled channels. Extrapolating the so-obtained strong interactions to the physical point and...
Whether the $N\bar{N}$ interaction could form a state or not is a long standing question, even before the observation of the $p\bar{p}$ threshold enhancement in 2003. The recent high statistic measurement in the $J/\psi \to \gamma 3(\pi^+\pi^-)$ channel would provide a good opportunity to probe the nature of the peak structures around the $p\bar{p}$ threshold in various processes. By...
Quantum matter interacting with gauge fields, an outstanding paradigm in modern physics, underlies the description of various physical systems. Engineering artificial gauge fields in ultracold atoms offers a highly controllable access to the exotic many-body phenomena in these systems. Here we implement a triangular flux ladder in the momentum space of ultracold 133Cs atoms with tunable...
The strong attractive interaction of the ϕ meson and the proton is reported by ALICE collaboration recently. The corresponding scattering length is given as Re(f0)=0.85±0.34(stat)±0.14(syst)fm and Im(f0)=0.16±0.10(stat)±0.09(syst)fm. The fact that the real part is significant in contrast to the imaginary part indicates a dominate role of the elastic scattering, whereas the inelastic process is...
Currently, the $DD^{\ast}$, $D\bar{K}$ and $D^{\ast}\bar{K}$ systems are studied from both theoretical and experimental sides. The three hadronic molecules $T_{cc}^+$, $D^\ast_{s0}(2317)$ and $D_{s1}(2460)$ are found in the above three two-body systems. We consider chiral effective field theory, get the interactions of $DD^{\ast}$, $D\bar{K}$, $D^{\ast}\bar{K}$ systems on lattice, find a...
Moiré physics has flourished since the realization of twisted bilayer graphene at magic angles. Thanks to the high controllability and clean environment, ultracold atoms are ideal platforms for studying moiré physics. In this talk, I will present our recent progress in this direction. Using spin-dependent optical lattices for Rb87, Jing Zhang's group at Shanxi University first realized the...
We present the determination of the charm quark mass, the masses and decay constants of charmed mesons using thirteen 2+1 flavor full-QCD gauge ensembles at five different lattice spacings $a\in[0.05,0.11]$ fm, 8 pion masses $m_{\pi}\in(130,360)$ MeV, and several values of the strange quark mass, which facilitate us to do the chiral and continuum extrapolation. These ensembles are generated...
The Gailitis-Damburg oscillations are the near threshold singularities of cross-sections of reactive scattering predicted to exist in some atomic systems [1, 2, 3]. Namely, above the threshold of excited state of neutrally charged atom an infinite series of logarithmically spaced maxima and minima of cross-section can arise. Although this phenomenon was predicted in the early 1960s, there is...
We theoretically investigate the heteronuclear Efimov universality in three-body systems, specifically 87Rb87Rb40K and 133Cs133Cs6Li, which exhibit repulsive intraspecies interactions. Our study focuses on the three-body recombination (TBR) rates with J=0 symmetry on the positive side of the interspecies scattering length. We utilize the R-matrix propagation method within a hyperspherical...
The halo phenomenon is a hot topic in the nuclear structure study from both the theoretical and experimental points of view. Deep insights into the nucleon-nucleon interaction are needed to understand this phenomenon. Many neutron or proton-halo nuclei are observed in neutron or proton-rich nuclei by the experiments. With the strangeness quark included, the hyperon could influence the halo...
At BESIII, the R value is measured with the corresponding c.m. energy going from 2.2324 to 3.6710 GeV by measuring the inclusive hadronic cross section. An accuracy of better than 2.6% below 3.1 GeV and 3.0% above is achieved in the R values. Besides, the measurements of normalized differential cross sections of inclusive hadrons as a function of hadron momentum are performed at BESIII, for...
Complex adaptive learning behavior is intelligent. It is adaptive, learns in feedback loops, and generates hidden patterns as many individuals, elements or particles interact in complex adaptive systems (CASs). CASs highlight adaptation in life and lifeless complex systems cutting across all traditional natural and social sciences disciplines. However, discovering a universal law in CASs and...
We present a theoretical study of resonance lifetimes in a two-component three-body system, specifically examining the decay of three-body resonances into a deep dimer and an unbound particle. Utilising the Gaussian expansion method together with the complex scaling method, we obtain the widths of these resonances from first principles. We focus on mass ratios in the typical range for mixtures...
We propose a novel method to probe light-quark dipole moments by examining the azimuthal asymmetries between a collinear pair of hadrons in semi-inclusive deep inelastic lepton scattering off an unpolarized proton target at the Electron-Ion Collider. These asymmetries provide a means to observe transversely polarized quarks, which arise exclusively from the interference between the dipole and...
The BESIII experiment has collected 10 billion J/psi events, 2.6 billion psi(3686) events, and about 20 fb^-1 psi(3770) data. Various dark sectors produced in e+e- annihilation and hadron decay processes can be searched for at BESIII. In this talk, we report the search for invisible dark photon decay using initial state radiation, invisible muonic Z’ boson decay, sigma invisible decay, and...
An investigation considering the emergence of Rayleigh-Taylor (RT) and Kelvin-Helmholtz (KH) instabilities, which occur in initially immiscible configuration of homogeneous Bose-Einstein condensates confined in a two-dimensional circular box, will be reported. For the binary mixture, it has been considered the rubidium isotopes $^{85}$Rb and $^{87}$Rb. As verified, more sound wave generations...
An inner electron can generate a strong electromagnetic field at the nucleus, leading to the mixing of nuclear levels—a phenomenon known as nuclear hyperfine mixing (NHM). This effect can significantly alter nuclear properties, particularly the lifetimes of nuclear excited states. For instance, the lifetime of the $^{229}$Th isomer is reduced by five orders of magnitude, from $10^3$ seconds to...
In this talk, we will introduce a new color basis system and confinement mechanism for multi-quark systems within QCD’s string-like framework. This approach extends the color Hilbert space for $QQ\bar{Q}\bar{Q}$ states to include a "hidden color" state that mixes with two-meson states, leading to an attractive potential sufficient for bound state formation. Using a realistic Hamiltonian model,...
In this talk, I will discuss recent progress towards achieving self-consistency in the light-front quark model. Typically, observables are computed using the good (or plus) current; however, computations using other currents, such as the transverse or minus current, often suffer from inconsistencies, resulting in different values. Self-consistency can be achieved in the standard light-front...
The effects of three-nucleon force (3NF) have been actively studied by using the nucleon-deuteron (Nd) scattering states. The differential cross sections of the elastic Nd scattering at the energy below 150 MeV can be well reproduced by the Faddeev calculation based on modern nucleon-nucleon (NN) interactions and 3NF. On the other hand, the data at 250 MeV was underestimated by the...
Multiphoton ionization of atoms and molecules, involving one or more intermediate states, has been extensively studied for several decades and remains a topic of significant interest. With advancements in attosecond laser techniques, intrinsic timing information in ionization processes has become accessible. In this work, we revisit the role of spin-orbit effects in resonance-enhanced...
We propose a chiral quark model that incorporates vector mesons and apply it to the study of the hadron spectrum. We consider the contributions of vector mesons within the framework of hidden local symmetry. Our results demonstrate a significant improvement in the masses of ground state baryons, including the nucleon, $\Lambda_c$, and $\Lambda_b$. We successfully reproduce the masses of all 45...
After obtaining eigenvalues and eigenfunctions of a particle in a a one dimensional box in the presence of Dunkl operator, we expand the calculations for a three-body systems and for two different Fermion case and Boson case we discuss some new transition that have not seen before.
The observation of the $T_{c\bar{s}}(2900)$ indicates the potential existence of strange double charm pentaquarks based on the heavy antidiquark symmetry. We systematically study the mass spectra of strange double charm pentaquarks with strangeness $S=-1$ in both molecular and compact structures for quantum numbers $J^{P}=1/2^{-}$, $3/2^{-}$, $5/2^{-}$. By constructing the interpolating...
The proton is the simplest element of matter and the deuteron is the simplest compound nucleus; however, the measurements of their charge radii present significant puzzles. These puzzles are still unresolved, as they originate from the fact that the radii measured with high precision in muonic spectroscopy differ from those measured in ordinal-atom spectroscopy and electron scattering.
To...
Since the discovery of the $\chi_{c1}(3872)$ (aka $X(3872)$) state, many states compatible with tetraquarks have been observed, and many theoretical models have been proposed to explain these observations. However, there is still no consensus on the nature of tetraquark states. Further experimental studies of tetraquark states will help to test the theoretical model.
The LHCb experiment, with...
The optical nonlinearities of most materials are exceedingly small, which often requires fairly intense light fields with many photons to observe notable nonlinear effects. On the other hand, the possibility to enhance optical nonlinearities to the level of individual photons holds a number of interesting prospects, scientifically as well as technologically. Here, two-dimensional, atomically...
Scattering amplitudes involving three-particle scattering processes are investigated within the isobar approximation which respects constraints from two- and three-body unitarity. The particular system considered is the $D^0D^{*+}-D^+D^{*0}$, where the $D^{*+}$~$(D^{*0})$ enters as a $p$-wave $D^+\pi^0$ or $D^0\pi^+$~($D^0\pi^0$ or $D^+\pi^-$) resonance. The interaction potentials in the...
Necessity of the three-nucleon forces (3NFs) have come to light in various nuclear phenomena, for example, binding energies of nuclei, and equation of state in nuclear matters. As numerically exact solutions of the Faddeev equations using 2N- and 3N-forces are now attainable for observables in nucleon-deuteron (Nd) scattering, intricate information of the 3NFs can be extracted by directly...
Ultracold atomic and molecular gases are important platforms for studying quantum effects. One advantage of ultracold atomic and molecular gases over other systems is that the interparticle interactions are tunable. This is due to the fact that scattering resonances can be induced between ultracold atoms or molecules using the external field. In the vicinity of resonance, interatomic...
The Schrodinger equation with a Yukawa type of potential is solved analytically. When different boundary conditions are taken into account, a series of solutions are indicated as Bessel function, the first kind of Hankel function and the second kind of Hankel function, respectively. Subsequently, the scattering processes of $K \bar{K}^*$ and $D \bar{D}^*$ are investigated. In the $K \bar{K}^*$...
This talk is based on [Eur.Phys.J.C 84 (2024) 8, 800]. A novel approach is proposed to probe the nature of the double charm tetraquark through the prompt production asymmetry between $T_{\bar{c}\bar{c}}^-$ and $T_{cc}^+$ in pp collisions. When comparing the compact tetraquark picture and hadronic molecular picture, we find that the former one exhibits a significantly larger production...
Properties of near-threshold exotic hadrons in the spectrum of heavy quarks are sensitive to multi-body effects that are particularly relevant for states containing charmed quarks. I will discuss few-body effects in heavy flavour hadronic molecules at the example of the tetraquark Tcc+ state discovered recently by the LHCb collaboration and studied on the lattice.
We study the decays $\bar B^0 \to \bar K^0 \, X$, $B^- \to K^- \, X$, $\bar B^0_s \to \eta (\eta')\, X$, $\bar B^0 \to \bar K^{*0} \, X$, $B^- \to K^{*-} \, X$ , $\bar B_s^0 \to \phi \, X$, with $X \equiv X(3872)$, from the perspective of the $X(3872)$ being a molecular state made from the interaction of the $D^{*+} D^-, D^{*0} \bar D^0$ and $c.c.$ components. We consider both the external and...
Recent experimental measurements of the breakup of $^8{\rm B}$ proton-halo nucleus on a lead target at deep sub-barrier energies by Pakou et al.[1] and Yang et al.[2], have shown that the breakup channel is the main reaction channel at these energies. Further, these works indicated the effect of Coulomb polarization on the proton halo state, with the correlation information revealing that the...
Nucleon-nucleon interaction, or nuclear force, is the crucial input for ab-initio calculation of modern nuclear physics. It plays a fundamental role in understanding all nuclear structure and reaction phenomena. Nuclear force is the residue of strong interaction among nucleons, including protons and neutrons, which are bound into a large variety of nucleus of diverse nature depending on the...
The work of Eur. Phys. J. C 83 (2023) 983 will be presented, in which we perform a fit to the LHCb data on the $T_{cc}(3875)$ state in order to determine its nature. We use a general framework that allows to have the $D^0 D^{*+}$, $D^+ D^{*0}$ components forming a molecular state, as well as a possible nonmolecular state or contributions from missing coupled channels.
Neutron scattering off neutron halos can provide important information about the internal structure of nuclei close to the neutron drip line. In this work, we use halo effective field theory to study the $s$-wave scattering of a neutron and the spin-parity $J^P=\frac{1}{2}^+$ one-neutron halo nuclei $^{11}\rm Be$, $^{15}\rm C$, and $^{19}\rm C$ at leading order. In the $J=1$ channel, the only...
To explore the properties of H-like dibaryon $\Lambda_c \Lambda_c(0^+)$, we proceed ab-initio calculation on lattice. Two Wilson-Clover ensembles are used with the same setup at $m_\pi \approx 303 \,$MeV and lattice spacing $a\approx0.07746\,$fm. We find the coupling between $\Lambda_c\Lambda_c$ and $\Xi_{cc}N$ or $\Sigma_c\Sigma_c$ couldn't convert the repulsion between two $\Lambda_c$s into...
This talk is based on [Phys.Rev.D 110 (2024) 1, 014001]. Recently entanglement suppression was proposed to be one possible origin of emergent symmetries. Here we test this conjecture in the context of heavy meson scatterings. The low-energy interactions of $D^{(*)}\bar D^{(*)}$ and $D^{(*)} D^{(*)}$ are closely related to the hadronic molecular candidates $X(3872)$ and $T_{cc}(3875)^+$,...
The peculiar thermal relaxation property of neutron stars is characterized by significantly prolonged thermal relaxation time. By combining neutron star cooling simulations, we propose a simple analytical model to explain the peculiar thermal relaxation. We find that the introduction of neutron $^3P_2$ superfluidity and the dUrca process lead to these peculiar thermal relaxations. The former...
In the work of prediction [Phys. Rev. C60, 045203], it was found that the hidden color (CC) channel plays an important role in forming nonstrange d* bound state and which is consistent with the COSY experiment. In the above work, the proposed chiral quark model were utilized in dynamically solving the resonating group method (RGM) equations for scattering processes and bound states. In...
The proposed STCF is a symmetric electron-positron beam collider designed to provide e+e− interactions at a centerof-mass energy from 2.0 to 7.0 GeV. The peaking luminosity is expected to be 0.5×10^35 cm−2s−1. STCF is expected to deliver more than 1 ab−1 of integrated luminosity per year. The huge samples could be used to make precision measurements of the properties of XYZ particles; search...
In cluster models, the light nuclei are treated as few-body systems composed of alpha-clusters and valence nucleons, providing significant successful description for the states with well developed clustering structure. However, the shell-like states with melted alpha clusters is more general in low lying states, and the cluster breaking effect becomes significant above the 3N+N threshold. In...
The study of light hadron decays has yielded significant insights into the fundamental properties of matter and the strong interactions between quarks. With the unprecedented statistics of 10 billion J/psi events collected with the BESIII detector, a wide range of processes involving light hadrons, including both light meson and hyperons, were explored for the new decay modes, new mechanisms...
Motivated by the recent progress in developing high-precision relativistic chiral nucleon-nucleon interactions, we study the antinucleon-nucleon interaction at the leading order in the covariant chiral effective field theory. The phase shifts and inelasticities with $J\leq 1$ are obtained and compared to their non-relativistic counterparts. For most partial waves, the descriptions of phase...
Hadron spectroscopy studies can provide insights into the internal structure and dynamics of hadrons, thus improving our knowledge of the non-perturbative regime of QCD. The large b- and c-hadron yields at LHCb and the good performance of the LHCb detector make it an excellent laboratory for such studies, providing unique opportunities for both the precise measurement of properties of...
Experimental exploration of neutron dripline is very challenging, and neon is the heaviest nucleus measured neutron dripline experimentally. Prediction of dripline heavier nuclei than neon is currently depends on theoretical approaches. However, there exist strong model-dependence in the prediction of the dripline in theoretical approach. Nuclear Lattice Effective Field Theory is one of the ab...
The LHCb experiment collected the world's largest sample of charmed hadrons in proton-proton collisions during LHC Run 1 and Run 2. With this data set, LHCb is offering an unprecedented opportunity to enhance our understanding of these particles through searching for new decay channels [1], measurement of b-baryon properties [2], measurement of the mass and production [3]. This presentation...
Accessing continuum information in nuclear physics is challenging, especially in an ab initio setup. We present recent progress on this topic using finite-volume dependences. Finite-volume dependencies in nuclear physics are well-established analytical tools for numerical simulations. They reveal real-world properties from discrete energy levels in artificial finite boxes. In this talk, I...
Recently, the femtoscopic technique provided insights into the previously experimentally inaccessible strong interaction between hadron pairs, including strangeness or charm. The ALICE Collaboration has, for the first time, extended such measurements to three-hadron and hadron-nucleus systems. Such studies provide a pivotal input to a better understanding of exotic nuclei and three-body...
Studies of pentaquark states can improve our understanding of the strong interaction at the low-energy region. In 2015, the first candidates for pentaquark states were observed at LHCb. Since then, significant experimental and theoretical efforts have focused on pentaquark research. However, the internal structure and dynamics of tetraquarks remain a topic of active debate, calling for more...
In our work, we dynamically generate the bound states with the chiral unitary approach with the coupled channels, and evaluate the correlation functions for each channel. Then we address the inverse problem starting from these correlation functions to determine the scattering observables related to the system, including the existence of the bound state and its molecular nature. Assuming the...
Femtoscopic correlations with the $π^0π^0$ pair are measured in photoprodution at $E_{\gamma}$=1.3−2.4 GeV to extract the space-time geometry of the pion emission region. The $π^0π^0$ photoprodution experiment was carried out at Spring-8 BL31LEP with a linearly polarized photon beam using a 4π electromagnetic calorimeter BGOegg. Enhancement due to quantum statistics arising from Bose-Einstein...
The nuclear reaction $^6$He+p was investigated at 8 MeV/u. $^6$He is a halo nucleus, and it has a three-body $\alpha$+n+n structure. It is the lightest halo nucleus and is bound by about 1 MeV against the $\alpha$+n+n breakup. Moreover, there is no core excitation in $^6$He and the interactions between the $^6$He constituents (i.e. the alpha particle and the neutrons) with the target (proton)...
We investigate the nucleon self energy through the sixth chiral order in the covariant SU(2) chiral perturbation theory (χPT) in the single baryon sector using the extended-mass-on-shell(EOMS) scheme. It is found that the EOMS scheme exhibits quite satisfactory convergence behavior through O(q^6) around physical point. We also predict the pion mass dependence of the nucleon mass to the...
The dynamics of the three-nucleon system can be extensively studied in the deuteron-proton (dp) breakup reaction. Experimental studies of the dp system allow for the observation of effects of various dynamical components, such as three-nucleon force (3NF) and Coulomb force. Measurements of cross sections as well as polarized observables (e.g. vector and tensor analyzing powers [1]) allow...
Scattering reactions can be used to study the properties of hadron resonances. The traditional analysis method is to fit experimental data by adjusting the quantum number and parameters of the resonance. I would introduce a new method, which is the application of neural networks (NN), to study hadron resonances. The advantage of the NN method is that it can give quantitative probabilities in...
We will demonstrate the physical significance of the study of the semileptonic decay. The various theoretical tools such as the quark model will be explained.
We will dispay our prediction for several observables that can be tested in experiment.
Structure and correlations of nuclei at and beyond the neutron drip line have attracted lots of attention in the last decades. Strongly correlated neutrons may also form neutron clusters (e.g., 3n, 4n). Despite many experimental and theoretical efforts, the properties of these neutron clusters still remain elusive. To study the structure of the extremely neutron-rich nuclei and the...
The validity range of the time-honored effective range expansion can be very limited due to the presence of a left-hand cut close to the two-particle threshold. Such a left-hand cut arises in the two-particle interaction involving a light particle exchange with a mass small or slightly heavier than the mass difference of the two particles, a scenario encountered in a wide range of systems....
The structure of neutron-rich nuclei in the neutron-drip-line region is one of the frontiers of nuclear physics. By directly detecting the neutrons emitted during their decay, the structure and multi-neutron correlations of the nucleus can be investigated, which is not only important for advancing our understanding of the structure and interactions of the finite nuclei, but also helps to gain...
Motivated by the recent BESIII report on $J/\psi\rightarrow\gamma K^S_0K^S_0\pi^0$ decay, we firstly perform a disperisve analysis to study the final-state-interactions (FSIs) in the three-body unitarity and try to gain some insights into the nature of long-standing puzzles of isos-scalar pseudo-scalar $\eta(1405/1475)$ which is related the radially excited states of $\eta-\eta'$ and...
The Similarity Renormalization Group (SRG) is a potent method explored for decoupling nuclear potentials, aimed at reducing computational demands in observable calculations. Its versatility and robustness in handling nuclear interactions offer a gateway to deeper insights into the renormalization process. These transformations, similar to the renormalization group, are typically unitary in...
We use the continuum discretized coupled channel method to investigate the breakups of 6Li and 7Li on different target masses when the continuum resonant states are included and excluded in the coupling matrix elements. Our intention is to study the dynamic differences and/or similarities due to their different properties, other than the ground-state binding energy. To this end, keeping the...
Charmed hadron decays offer an excellent environment for studying non-perturbative QCD. In addition, these decays involving scalar and vector mesons as final state particles play a crucial role in investigating the nature of scalar mesons, like a0 and f0, as well as examining the decay of vector mesons, like phi.
The BESIII experiment has collected 7.33 fb^-1 and 20 fb^-1 at 4.128-4.226 GeV...
Nucleons, fundamental blocks of the world, carry almost all mass of the visible Universe. In Standard Model, nucleons are bound states of quarks and gluons via strong interaction which is described by quantum chromodynamics (QCD). Nucleons are members of a large family of baryons. Non-perturbative features of QCD, confinement and dynamical chiral symmetry broken, are the key to understand...
Quantum entanglement and its formation mechanism, a topic of debate for 90 years, continue to plague the theoretical physics community and remain unresolved. Physical experiments have shown that quantum behavior does not adhere to Newton's laws and violates Bell's inequality. Its violation directly reveals the nonlocal nature of quantum mechanics. The results necessitate the definition of a...
We study the charge symmetry breaking (CSB) effect in the binding energy of mirror
hypernuclei in the mass region $A=7\sim 48$ in relativistic mean field (RMF) models introducing $NN$ and $\Lambda N$ interactions. The phenomenological $\Lambda N$ CSB interaction is introduced and the strength parameter is fitted to reproduce the experimental binding energy difference between the mirror...
I will be reporting an investigation considering the emergence of Rayleigh-Taylor (RT) and Kelvin-Helmholtz (KH) instabilities, which occur in initially immiscible configurations of homogeneous Bose-Einstein condensates confined in a two-dimensional circular box. For the binary mixture, it has been considered the rubidium isotopes $^{85}$Rb and $^{87}$Rb. As verified, more sound wave...
We present an introduction to the effects of extragalactic background light on the propagation of very high energy (VHE) gamma rays from GRBs. Generically, highly energetic extragalactic photons would be severely attenuated via interaction with the extragalactic background light since the optical depth values for VHE photons are large. Then, how come the multi-TeV photons have been...
We propose a novel method to identify the two-pole structure of the $\Lambda(1405)$. The two poles owe their origin to different quark flavor irreducible representations in the meson-baryon coupled-channel interactions, thus they should be individually manifested in reactions that provide good flavor eigenstate sources. Hadronic decays of charmonia into $\bar{\Lambda}\Sigma\pi$ and...
an introduction of EicC
In this paper we are going to intend to study the mass spectrum of heavy mesons, for
this we consider the Cornell potential as the interaction between quark and antiquark and
choose the Variational method to solve the Schrödinger equation. This method defines the
wave function as a linear combination of test functions. We can optimize coefficients of
the obtained meson mass function using...
Low energy interactions between neutrinos and nucleons have been investigated in manifestly relativistic baryon chiral perturbation theory. At low energies, where chiral perturbation theory is applicable, the total cross sections for the different reaction channels exhibit a sizable non-resonant contribution, which is not present in event generators of broad use in neutrino oscillation and...
When neutrinos are propagating in ordinary matter, their coherent forward scattering off background particles results in the so-called Mikheyev-Smirnov-Wolfenstein (MSW) matter potential, which plays an important role in neutrino flavor conversions. In this talk, I will present a complete one-loop calculation of the MSW potential in the Standard Model (SM). We carry out the renormalization in...
Structure and neutron correlations of nuclei at and beyond the neutron drip line have attracted lots of attention in the last decades. They are not only important for advancing our understanding of the structure and interactions of the finite nuclei, and could also bring new insights into the properties of neutron-rich matter that makes up neutron stars. In this talk, I will discuss our recent...
Atmospheric neutrinos contribute significantly to irreducible backgrounds through their neutral-current (NC) interactions with $^{12}$C nuclei in liquid-scintillator (LS) detectors, impacting measurements of diffuse supernova neutrino background (DSNB), nucleon decay, and reactor neutrinos. This talk extends our preceding paper [Phys. Rev. D. 103. 053001], by conducting a first-time systematic...
This talk discusses applications of nuclear lattice simulations using effective field theory. Some of the topics to be discussed are accelerated perturbation theory using wavefunction matching, seeing and measuring nucleonic correlations with the pinhole algorithm, intrinsic shapes, nuclear clustering, thermodynamics, and superfluidity.
We solve the nucleon's wave functions from the eigenstates of the light-front quantum chromodynamics Hamiltonian for the first time, using a fully relativistic and nonperturbative approach based on light-front quantization, without an explicit confining potential. These eigenstates are determined for the three quark, three-quark-gluon, and three-quark-quark-antiquark Fock representations,...
How does nuclear shell structure evolve towards the highly neutron-rich nuclei? How do neutrons arrange themselves when they significantly outnumber protons in a nucleus? Addressing these questions, we present our recent observation of the doubly magic candidate nucleus, 28O, which has 20 neutrons and 8 protons, at RIBF at RIKEN. This nucleus provides a key benchmark for testing modern nuclear...
We report a lattice QCD calculation of the parton distribution function (PDF) of a deuteron-like dibaryon system using large-momentum effective theory (LaMET). The calculation is done on three Wilson Clover ensembles with a fixed lattice spacing $a=0.105$~fm and two pion masses. The lattice matrix elements are computed at proton momenta up to 2.46~GeV with the signal of high momentum modes...
Particles of non-zero spin produced in non-central heavy-ion collisions are expected to be polarized along the direction perpendicular to the reaction plane because of their spin-orbit interactions in the produced matter, and this has indeed been observed for many hyperons and vector mesons. Here, we show that the hypertriton ($^3_\Lambda$H), which is the lightest hypernucleus, is also...
Relativistic heavy-ion collisions provide unprecedent environment for creating complex few-body nuclei, hypernuclei and their antimatter partners. In addition, baryon transport over several unit of rapidity in heavy-ion collisions provides a unique opportunity to distinguish whether the baryon number is traced by the proposed Y-shaped gluon junction (B=1) or is carried by the valence quarks....
In the standard Big Bang Nucleosynthesis (BBN) framework, the primitive ${^6{Li}}$ abundance is mainly determined by two nuclear reactions: the
$d(\alpha,\gamma ){^6{Li}}$ reaction, where deuteron reacts with an alpha particle to produce ${^6{Li}}$. This reaction leads to the formation of ${^6{Li}}$ during the primordial nucleosynthesis process. Conversely, ${^6{Li}}(p,\alpha ){^3{He}}$, can...
We review the calculation of resonances in some simple benchmark potentials and in some atomic systems such as H-minus and He, using different methods such as stabilzation, complex scaling, complex absorption... We then discuss the application of such methods to multiquark systems.
Nuclear clustering is a fascinating phenomenon in nuclear physics, characterized by the Hoyle state in $^{12}$C, which is crucial for carbon production in the universe via the triple-alpha process. This state features a three-body structure of alpha clusters that form a quasi-Bose-Einstein condensate through weak correlations. Clustering is widely present in light nuclei, particularly in...
Based on the beyond-mean-field Skyrme-Hartree-Fock model, we investigate the shape coexistence in Ne isotopes and the effect of $\Lambda$ hyperon on the energy level structure in the nuclei. The up-to-date Skyrme-type $N\Lambda$ interaction SLL4 and the $NN$ interaction SGII are employed. Low-lying energy spectra of $^{20,22,24,26,28,30,32,34}$Ne, including the low-lying states with $J\leq 6$,...
The discovery of the Higgs boson marked the beginning of a new era in HEP. Precision measurement of the Higgs boson properties and exploring new physics beyond the Standard Model using Higgs as a tool become a natural next step beyond the LHC and HL-LHC. Among the proposed Higgs factories worldwide, the Circular Electron Positron Collider (CEPC) with 100km circumference was proposed by the...
The neutron-rich isotopes of hydrogen, such as $\rm ^{6}H$ and $\rm ^{7}H$, are good platforms for the study of NN interactions in neutron-rich environments because they have the largest neutron-to-proton ratios known so far. However, the experimental and theoretical studies of them are still limited. For $\rm ^{6}H$, the energy of its ground state is still controversial. It is about 2.7 MeV...
This paper aims to introduce the Dunkl Fourier transform and expand it for the two body systems. We arrive at the Dunkl Fourier transform by generalizing a simple definition of the Fourier transform and applying this theory to square wave packets and Gaussian wave packets. In addition, we convert the harmonic oscillator from position space to momentum space by Dunkel Fourier transformation. We...
Triangle Singularity (TS) is a loop effect that occurs under specific kinematic conditions. Isospin breaking is a rare decay process in strong interactions. In certain scenarios, Triangle Singularity can amplify the effects of isospin breaking. In this context, we will explore the $J/\psi \to \Lambda \bar{\Lambda} \pi$ process involving Triangle Singularity. Subsequently, in this process, we...
In my talk, I will review the application of the effective field theory methods for the analysis of lattice QCD data in the two- and three-particle sectors. These methods are strikingly similar to the ones used to solve the few-body problems in QCD. The deep reason for this similarity is that the short-range physics in both cases is described by the same effective Lagrangian that allows to...
Halo nuclei are interesting nuclear systems at the edge of stability. In an EFT treatment (halo EFT) they can be described as a more tightly bound core plus the more loosely bound halo nucleons. The so-called two-neutron ($2n$) halo nuclei consisting of the core and two halo neutrons are a special class within the halo nuclei. Prominent examples are $^6$He and $^{11}$Li. In the EFT description...
Neutron multiplicity associated with neutrino-nucleus interactions has become important observable in large neutrino detectors such as Super-Kamiokande, KamLAND, and JUNO. The neutron multiplicity can be measured by detecting gamma rays emitted by neutron capture. It is expected to improve the results of various physics analyses using the measured neutron multiplicity to enhance flavor...
I shall report on D weak decays to three mesons, showing that they are a rich source of information on meson meson interaction and the nature of many resonances generated in the process.
Application of the generalization of the Wilsonian renormalization group by introducing multitude of cutoff parameters to the nucleon-nucleon scattering problem in the formalism of chiral effective field theory will be considered. The resulting expansion of the effective potential around the non-trivial fixed point and the corresponding power counting will be discussed.
