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

Guo, Feng-Kun; Meißner, Ulf-G.; Yang, Zhi

doi:10.1016/j.physletb.2014.11.030

arXiv 2014-10-17 DOI 10.1016/j.physletb.2014.11.030 0 مشاهدة

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

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

High Energy Physics - Phenomenology High Energy Physics - Experiment

الأصل · EN

We study the production of the spin partner of the X(3872), which is a D* D* bound state with quantum numbers JPC=2⁺⁺ and named X₂(4012) here, with the associated emission of a photon in electron--positron collisions. The results show that the ideal energy region to observe the X₂(4012) in e+e- annihilations is from 4.4 GeV to 4.5 GeV, due to the presence of the S-wave D* D₁(2420) and D* D₂(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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