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Search for $J^{P C} = 1^{- +}$ exotic state in $e^{+} e^{-}$ annihilation

Institut für Kernphysik, Institute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany

^*q.wang@fz-juelich.de

Phys. Rev. D 89, 114013 – Published 10 June, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.114013

Abstract

The $P$ -wave and $S$ -wave heavy-light mesons and their charge conjugates, i.e., $D_{1} (2420) \bar{D} + c . c .$ , $D_{1} (2420) {\bar{D}}^{*} + c . c .$ , and $D_{2} (2460) {\bar{D}}^{*} + c . c .$ , can couple to states with vector quantum number $J^{P C} = 1^{- -}$ and exotic quantum number $J^{P C} = 1^{- +}$ in a relative $S$ wave. Near threshold, the heavy-light meson pair may form hadronic molecules due to the strong $S$ -wave coupling, and the mysterious vector state $Y (4260)$ could be such a state of the $D_{1} (2420) \bar{D} + c . c .$ molecule. This implies the possible existence of its conjugate partner made of the same heavy-light mesons but with exotic quantum number $J^{P C} = 1^{- +}$ . We evaluate the production rate of such exotic hadronic molecules and propose a direct experimental search for them in $e^{+} e^{-}$ annihilation. Confirmation of such exotic states in experiment will certainly deepen our insights into strong QCD and the arrangement of multiquark degrees of freedom.

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References (32)

S. K. Choi et al. (Belle Collaboration), Phys. Rev. Lett. 91, 262001 (2003).
N. Brambilla et al., arXiv:1404.3723.
S. L. Olsen, arXiv:1403.1254.
A. Bondar et al. (Belle Collaboration), Phys. Rev. Lett. 108, 122001 (2012).
I. Adachi et al. (Belle Collaboration), arXiv:1209.6450.
M. Ablikim et al. (BESIII Collaboration), Phys. Rev. Lett. 110, 252001 (2013).
Z. Q. Liu et al. (Belle Collaboration), Phys. Rev. Lett. 110, 252002 (2013).
M. Ablikim et al. (BESIII Collaboration), Phys. Rev. Lett. 112, 132001 (2014).
M. Ablikim et al. (BESIII Collaboration), Phys. Rev. Lett. 111, 242001 (2013).
T. Xiao, S. Dobbs, A. Tomaradze, and K. K. Seth, Phys. Lett. B 727, 366 (2013).
Q. Wang, M. Cleven, F.-K. Guo, C. Hanhart, U.-G. Meißner, X.-G. Wu, and Q. Zhao, Phys. Rev. D 89, 034001 (2014).
Q. Wang, C. Hanhart, and Q. Zhao, Phys. Lett. B 725, 106 (2013).
Q. Wang, C. Hanhart, and Q. Zhao, Phys. Rev. Lett. 111, 132003 (2013).
X. Li and M. B. Voloshin, Phys. Rev. D 88, 034012 (2013).
M. Cleven, Q. Wang, F.-K. Guo, C. Hanhart, U.-G. Meißner, and Q. Zhao, arXiv:1310.2190.
A. Salam, Nuovo Cimento 25, 224 (1962).
S. Weinberg, Phys. Rev. 130, 776 (1963).
K. Hayashi, M. Hirayama, T. Muta, N. Seto, and T. Shirafuji, Fortschr. Phys. 15, 625 (1967).
G. V. Efimov and M. A. Ivanov, The Quark Confinement Model of Hadrons (CRC, Boca Raton, FL, 1993).
F.-K. Guo, C. Hanhart, U.-G. Meißner, Q. Wang, and Q. Zhao, Phys. Lett. B 725, 127 (2013).
F.-K. Guo, C. Hidalgo-Duque, J. Nieves, and M. P. Valderrama, Phys. Rev. D 88, 054007 (2013).
M. P. Valderrama, Phys. Rev. D 85, 114037 (2012).
J. Nieves and M. P. Valderrama, Phys. Rev. D 86, 056004 (2012).
J. Segovia, D. R. Entem, F. Fernandez, and E. Hernandez, Int. J. Mod. Phys. E 22, 1330026 (2013).
G.-J. Ding, J.-J. Zhu, and M.-L. Yan, Phys. Rev. D 77, 014033 (2008).
X. Li and M. B. Voloshin, Mod. Phys. Lett. A 29, 1450060 (2014).
F.-K. Guo, C. Hanhart, and U.-G. Meißner, Phys. Lett. B 665, 26 (2008).
M. Cleven, Q. Wang, F.-K. Guo, C. Hanhart, U.-G. Meißner, and Q. Zhao, Phys. Rev. D 87, 074006 (2013).
J. Beringer et al. (Particle Data Group Collaboration), Phys. Rev. D 86, 010001 (2012).
X.-G. Wu, C. Hanhart, Q. Wang, and Q. Zhao, Phys. Rev. D 89, 054038 (2014).
M. Cleven, F.-K. Guo, C. Hanhart, and U.-G. Meißner, Eur. Phys. J. A 47, 120 (2011).
A. E. Bondar, A. Garmash, A. I. Milstein, R. Mizuk, and M. B. Voloshin, Phys. Rev. D 84, 054010 (2011).

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Search for $J^{P C} = 1^{- +}$ exotic state in $e^{+} e^{-}$ annihilation

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Search for $J^{P C} = 1^{- +}$ exotic state in $e^{+} e^{-}$ annihilation