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arXiv · 1410.4674

Production of the spin partner of the X(3872) in e^+e^- collisions

Feng-Kun Guo·Ulf-G. Meißner·Zhi Yang
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Abstract

We study the production of the spin partner of the X(3872), which is a D^{*}\bar D^{*} bound state with quantum numbers J^{PC}=2^{++} and named X_2(4012) here, with the associated emission of a photon in electron--positron collisions. The results show that the ideal energy region to observe the X_2(4012) in e^+e^- annihilations is from 4.4~GeV to 4.5~GeV, due to the presence of the S-wave \bar D^{*} D_1(2420) and \bar D^{*} D_2(2460) thresholds, respectively. We also point out that it will be difficult to observe the γX(4012) at the e^+e^- center-of-mass energy around 4.26~GeV.

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Feng-Kun Guo, Ulf-G. Meißner, Zhi Yang. 2014-11-25. Production of the spin partner of the X(3872) in e^+e^- collisions. https://doi.org/10.1016/j.physletb.2014.11.030

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