Chinese Physics C > 2007, Vol. 31 > Issue(12): 1192-1195

Spin Alignment of Vector Mesons K^*0(892) and φ(1020) in Au+Au and p+p Collsions at s_NN=200GeV

TANG Ze-Bo^,

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

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Abstract：
We present the preliminary results on the spin alignment matrix element ρ ₀₀for vector mesons K ^*0(892) and φ(1020) in mid-central (20%—60%) Au+Au and p+p collisions at s _NN=200GeV. The values of ρ ₀₀with respect to reaction plane in Au+Au collisions are 0.36±0.02(stat)±0.13(sys) for K ^*0(892) and 0.38±0.01 (stat)±0.04 (sys) for φ(1020). No evident global spin alignment with respect to reaction plane is observed in the measured p _Tregion up to 5GeV/c with current sensitivity. ρ ₀₀with respect to the production plane of the vector meson is also measured for K ^*0(892) and φ(1020) in Au+Au collisions, and for φ(1020) in p+p collisions. No significant difference for the ρ ₀₀between Au+Au and p+p collisions is observed with our data sample.

References

[1]

. LIANG Z T, WANG X N. Phys. Rev. Lett., 2005, 94:1023012. LIANG Z T, WANG X N. Phys. Lett., 2005, B629: 203. Voloshin S A. nucl-th/04100894. Schilling K el al. Nucl. Phys., 1970, B15: 3975. Adams J et al. (STAR Collab.). Phys. Rev., 2005, C71:0649026. Adams J et al. (STAR Collab.). Phys. Lett., 2005, B612:1817. Drijard D et al. Nucl. Instrum. Methods, 1984, A225: 3678. L'Hte D et al. Nucl. Instrum. Methods, 1994, A337: 5449. Adams J et al. (STAR Collab.). Phys. Rev. Lett., 2004, 92:05230210. Poskanzer A M, Voloshin S A. Phys. Rev., 1998, C58: 167111. Bunce G et al. Phys. Rev. Lett., 1976, 36: 111312. Duryea J et al. Phys. Rev. Lett., 1991, 67: 119313. Aleev A N et al. (EXCHARM Collab.). Phys. Lett., 2000,B485: 334

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[4]	V.K.B.Kota. Random Interactions in Nuclei and Extension of 0⁺Dominance in Ground States to Irreps of Group Symmetries. Chinese Physics C, 2004, 28(12): 1307-1312.
[5]	LI Zeng-Hua,LU Guang-Cheng,ZUO Wei. Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅶ) Proton and Neutron¹S₀Superfluidity in Neutron Star Matter. Chinese Physics C, 2003, 27(12): 1084-1088.
[6]	FAN Sheng,LI ZhuXia. Fragment Mass Distribution of Spallation Reaction Induced by Intermediate Energy Protons. Chinese Physics C, 2000, 24(9): 845-851.
[7]	FAN Sheng,LI ZhuXia. Study of Reaction Mechanism of Intermediate Energy Protons Bombarding Heavy Nuclei. Chinese Physics C, 2000, 24(8): 755-760.
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[9]	. Nuclear Fragmentation and Particle Production in Interactions Induced by 10.7A GeV¹⁹⁷Au at BNL/AGS. Chinese Physics C, 1995, 19(8): 703-712.
[10]	Li Yangguo. Antiproton-Nucleus Inelastic Scattering at Intermediate Energies. Chinese Physics C, 1994, 18(2): 186-192.
[11]	Li Yangguo. Spin Effect of Antiprotou-Nucleus Inelastic Scatterings at Intermediate Energies. Chinese Physics C, 1994, 18(5): 466-472.
[12]	LIU Liang-Gang. ρ⁰-ω Mixing Effect in the (ρ⁰,ω)→e⁺e^－Pair Decay. Chinese Physics C, 1993, 17(7): 614-618.
[13]	LIU Bo. Enhancement of K⁺/π⁺Ratio in High-Energy Proton-Nucleus and Nucleus-Nucleus Collisions Due to the Secondary Collisions. Chinese Physics C, 1993, 17(5): 455-461.
[14]	LI Yang-Guo. Antiproton-Nucleus Elastic Scattering at Intermediate Energies. Chinese Physics C, 1993, 17(9): 829-834.
[15]	ZHOU Jin-Li,LI Qing-Run. Total Cross Sections and Forward Scattering Amplitudes for Intermediate Energy Proton on Light Nuclei. Chinese Physics C, 1992, 16(9): 822-825.
[16]	LI Yang-Guo. The Spin Effect of Antiproton-Nucleus Inelastic Collison. Chinese Physics C, 1992, 16(2): 137-144.
[17]	LU Zhao-Qi,SA Ben-Hao,ZHENG Yu-Ming,,. NUCLEAR CHARGE DISPERSION OF FRAGMENTS IN HIGH ENERGY PROTON-NUCLEUS COLLISION. Chinese Physics C, 1988, 12(1): 75-79.
[18]	LI Tie-Zhong. EXTRA Z⁰BOSONS AND THE DIFFICULTY OF PROTON DECAY. Chinese Physics C, 1988, 12(4): 484-492.
[19]	HU Su-Fen,SHEN Jun-Feng,ZHANG Yu-Shun. ELASTIC SCATTERING OF NEAR 1GeV PROTON FROM MEDIUM AND HEAVY NUCLEI. Chinese Physics C, 1984, 8(3): 374-379.
[20]	ZHANG JING-YE,ZHANG XI-ZHEN. THE ROTATION ALIGNMENT EFFECTS OF g_9/2PROTON PAIR AND NEUTRON PAIR IN⁶⁸Ge. Chinese Physics C, 1981, 5(1): 108-112.

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TANG Ze-Bo. Spin Alignment of Vector Mesons K ^*0(892) and φ(1020) in Au+Au and p+p Collsions at s _NN=200GeV[J]. Chinese Physics C, 2007, 31(12): 1192-1195.

TANG Ze-Bo. Spin Alignment of Vector Mesons K ^*0(892) and φ(1020) in Au+Au and p+p Collsions at s _NN=200GeV[J]. Chinese Physics C, 2007, 31(12): 1192-1195. shu

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Received: 2007-07-17
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Spin Alignment of Vector Mesons K^*0(892) and φ(1020) in Au+Au and p+p Collsions at s_NN=200GeV

TANG Ze-Bo^,

Corresponding author:TANG Ze-Bo,

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Received Date:2007-07-17
Accepted Date:1900-01-01
Available Online:2007-12-05

Abstract:We present the preliminary results on the spin alignment matrix element ρ₀₀for vector mesons K^*0(892) and φ(1020) in mid-central (20%—60%) Au+Au and p+p collisions at s_NN=200GeV. The values of ρ₀₀with respect to reaction plane in Au+Au collisions are 0.36±0.02(stat)±0.13(sys) for K^*0(892) and 0.38±0.01 (stat)±0.04 (sys) for φ(1020). No evident global spin alignment with respect to reaction plane is observed in the measured p_Tregion up to 5GeV/c with current sensitivity. ρ₀₀with respect to the production plane of the vector meson is also measured for K^*0(892) and φ(1020) in Au+Au collisions, and for φ(1020) in p+p collisions. No significant difference for the ρ₀₀between Au+Au and p+p collisions is observed with our data sample.