Regular Article - Theoretical Physics
Shedding light on the X(3930) and X(3960) states with the reaction
Instituto de Física, Universidade Federal da Bahia, Campus Universitário de Ondina, 40170-115, Bahia, Brazil
2 Instituto de Física Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
3 Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptdo. 22085, 46071, Valencia, Spain
4 Department of Physics, Guangxi Normal University, 541004, Guilin, China
Accepted: 31 March 2023
Published online: 20 April 2023
We have studied the contribution of the state X(3930), coming from the interaction of the and channels, to the decay. The purpose of this work is to offer a complementary tool to see if the X(3930) state observed in the channel is the same or not as the X(3960) resonance claimed by the LHCb Collaboration from a peak in the mass distribution around threshold. We present results for what we expect in the mass distribution in the decay and conclude that a clear signal should be seen around . At the same time, finding no extra resonance signal at would be a clear indication that there is not a new state at , supporting the hypothesis that the near-threshold peaking structure peak in the mass distribution is only a manifestation of a resonance below threshold.
© The Author(s) 2023
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