\begin{document}$ np(I=0)\to $\end{document}\begin{document}$ \pi^-pp $\end{document} followed by the fusion reaction \begin{document}$ pp\to \pi^+d $\end{document}, to describe the \begin{document}$ np\to \pi^+\pi^-d $\end{document} reaction with \begin{document}$ \pi^+\pi^- $\end{document} in state \begin{document}$ I=0 $\end{document}. In this reaction, a narrow peak identified with a "\begin{document}$ d(2380) $\end{document}" dibaryon has been previously observed. We discover that the second reaction step \begin{document}$ pp\to \pi^+d $\end{document} is driven by a triangle singularity that determines the position of the peak of the reaction and the high strength of the cross section. The combined cross section of these two mechanisms produces a narrow peak with a position, width, and strength, that are compatible with experimental observations within the applied approximations made. This novel interpretation of the peak accomplished without invoking a dibaryon explains why this peak has remained undetected in other reactions."> Sequential single pion production explaining the dibaryon "<i>d</i>*(2380)" peak -
  • [1]

    M. Bashkanovet al., Phys. Rev. Lett.102, 052301 (2009), arXiv:0806.4942

  • [2]

    P. Adlarsonet al. (WASA-at-COSY), Phys. Rev. Lett.106, 242302 (2011), arXiv:1104.0123

  • [3]

    P. Adlarsonet al. (WASA-at-COSY), Phys. Lett. B721, 229 (2013), arXiv:1212.2881

  • [4]

    H. Clement and T. Skorodko, Chin. Phys. C45, 022001 (2021), arXiv:2008.07200

  • [5]

    G. Faldt and C. Wilkin, Phys. Lett. B701, 619 (2011), arXiv:1105.4142

  • [6]

    M. Albaladejo and E. Oset, Phys. Rev. C88, 014006 (2013), arXiv:1304.7698

  • [7]

    L. Alvarez-Ruso, E. Oset, and E. Hernandez, Nucl. Phys. A633, 519 (1998), arXiv:nucl-th/9706046

  • [8]

    I. Bar-Niret al., Nucl. Phys. B54, 17 (1973)

  • [9]

    D. O. Riska, M. Brack, and W. Weise, Phys. Lett. B61, 41 (1976)

  • [10]

    A. M. Green and J. A. Niskanen, Nucl. Phys. A271, 503 (1976)

  • [11]

    M. Brack, D. O. Riska, and W. Weise, Nucl. Phys. A287, 425 (1977)

  • [12]

    P. Adlarson et al. (WASA-at-COSY),Phys. Lett. B774, 599 (2017), [Erratum: Phys. Lett. B806, 135555 (2020)], arXiv:1702.07212

  • [13]

    H. Clement and T. Skorodko (2020),2010.09217

  • [14]

    L. D. Landau,Nucl. Phys.13, 181 (1960), [Sov. Phys. JETP10(1), 45 (1959); Zh. Eksp. Teor. Fiz.37(1), 62 (1959)]

  • [15]

    M. Bayar, F. Aceti, F.-K. Guoet al., Phys. Rev. D94, 074039 (2016), arXiv:1609.04133

  • [16]

    C. Richard-Serre, W. Hirt, D. F. Measdayet al., Nucl. Phys. B20, 413 (1970)

  • [17]

    S. Coleman and R. E. Norton, Nuovo Cim.38, 438 (1965)

  • [18]

    P. W. F. Alons, R. D. Bent, J. S. Conteet al., Nucl. Phys. A480, 413 (1988)

  • [19]

    N. Ikeno, R. Molina, and E. Oset, Phys. Rev. C104, 014614 (2021), arXiv:2103.01712

  • [20]

    M. G. Albrow, S. Andersson-Almehed, B. Bosnjakovicet al., Phys. Lett. B34, 337 (1971)

  • [21]

    T. Ueda, Y. Ikegami, and K. Tada, Few Body Syst.18, 133 (1995)

  • [22]

    A. Gal and H. Garcilazo, Nucl. Phys. A928, 73 (2014), arXiv:1402.3171

  • [23]

    Z.-T. Lu, H.-Y. Jiang, and J. He, Phys. Rev. C102, 045202 (2020), arXiv:2007.15878

  • [24]

    H. Huang, X. Zhu, J. Pinget al., Phys. Rev. C98, 034001 (2018), arXiv:1805.04873

  • [25]

    G. D. Alexeevet al. (COMPASS), Phys. Rev. Lett.127, 082501 (2021), arXiv:2006.05342

  • [26]

    C. Itzykson and J. B. Zuber, Quantum Field Theory, International Series In Pure and Applied Physics (McGrawHill, New York, 1980), ISBN 978-0-486-44568-7

  • [27]

    F. Mandl and G. Shaw, Quantum Field Theory (1985)

  • [28]

    J. A. Oller and E. Oset,Nucl. Phys. A620, 438 (1997), [Erratum:Nucl. Phys. A652, 407-409 (1999)], arXiv:hep-ph/9702314

  • [29]

    E. Oset and A. Ramos, Nucl. Phys. A635, 99 (1998), arXiv:nucl-th/9711022

  • [30]

    J. A. Oller and U. G. Meissner, Phys. Lett. B500, 263 (2001), arXiv:hep-ph/0011146

  • [31]

    A. Martinez Torres, K. P. Khemchandani, and E. Oset, Phys. Rev. C77, 042203 (2008), arXiv:0706.2330

  • [32]

    A. Martinez Torres, K. P. Khemchandani, L. S. Genget al., Phys. Rev. D78, 074031 (2008), arXiv:0801.3635

  • [33]

    L. G. Dakhnoet al., Phys. Lett. B114, 409 (1982)

  • [34]

    J. Bystricky, J.Phys. France48, 1901 (1987)

  • [35]

    M. S. Guenther (A2), PoS Hadron2017, 051 (2018)

  • [36]

    M. Bashkanov, H. Clement, and T. Skorodko (2021), arXiv:2106.00494

  • [37]

    F.-K. Guo, X.-H. Liu, and S. Sakai, Prog. Part. Nucl. Phys.112, 103757 (2020), arXiv:1912.07030

  • [38]

    R. A. Arndt, I. I. Strakovsky, R. L. Workmanet al., Phys. Rev. C48, 1926 (1993)

  • [39]

    C.-H. Oh, R. A. Arndt, I. I. Strakovskyet al., Phys. Rev. C56, 635 (1997), arXiv:nucl-th/9702006

  • [40]

    L. Roca, Nucl. Phys. A748, 192 (2005), arXiv:nuclth/0407049

  • [41]

    T. Ishikawaet al., Phys. Lett. B772, 398 (2017), arXiv:1610.05532

  • [42]

    T. Ishikawaet al., Phys. Lett. B789, 413 (2019), arXiv:1805.08928

  • [43]

    A. Fix and H. Arenhoevel, Eur. Phys. J. A25(1), 115 (2005), arXiv:nucl-th/0503042

  • [44]

    M. Egorov and A. Fix, Nucl. Phys. A933, 104 (2015), arXiv:1412.0089

  • [45]

    T. Ishikawa, H. Fujimura, H. Fukasawaet al., Phys. Rev. C104, L052201 (2021)

  • [46]

    T. Ishikawaet al., Phys. Rev. C105, 045201 (2022)

  • [47]

    A. Martinez Torres, K. P. Khemchandani, and E. Oset, Phys. Rev. C107, 025202 (2023)

  • [48]

    T. C. Judeet al., Phys. Lett. B832, 137277 (2022), arXiv:2202.08594

  • [49]

    H. Ikedaet al., Phys. Rev. Lett.42, 1321 (1979)

  • [50]

    M. Bashkanovet al., Phys. Lett. B789, 7 (2019)

  • [51]

    M. Bashkanovet al. (A2), Phys. Rev. Lett.124, 132001 (2020), arXiv:1911.08309

  • [52]

    P. Rossi, E. De Sanctis, P. Levi Sandriet al., Phys. Rev. C40, 2412 (1989)

  • [53]

    C. S. Whisnant, Phys. Rev. C73, 044005 (2006)

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