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Enhancement near the $\bar{p}\Lambda$ threshold in the $\chi_{c0}\to \bar{p}K^+\Lambda$ reaction

High Energy Physics - Phenomenology 2020-08-12 v2 High Energy Physics - Experiment
Authors: Guan-Ying Wang , Man-Yu Duan , En Wang , De-Min Li
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Abstract

We have analyzed the reaction χc0→pˉK+Λ\chi_{c0}\to \bar{p} K^+\Lambda reported by the BESIII Collaboration, taking into account the contributions from the intermediate K(1830)K(1830), N(2300)N(2300), and Λ(1520)\Lambda(1520) resonances. Our results are in good agreement with the BESIII measurements, and it is found that the anomalous enhancement near the pˉΛ\bar{p}\Lambda threshold is mainly due to the contribution of the K(1830)K(1830) resonance. We also show that the interference of the high-mass N∗N^* and Λ∗\Lambda^* can not produce the anomalous enhancement near the pˉΛ\bar{p}\Lambda threshold.

Keywords

lambda(1405) resonance photoproduction

Cite

@article{arxiv.2003.03894,
  title  = {Enhancement near the $\bar{p}\Lambda$ threshold in the $\chi_{c0}\to \bar{p}K^+\Lambda$ reaction},
  author = {Guan-Ying Wang and Man-Yu Duan and En Wang and De-Min Li},
  journal= {arXiv preprint arXiv:2003.03894},
  year   = {2020}
}

Comments

9 pages, 7 figures, the version to be presented in PRD

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