SMuK 2021 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 19: Hadron Structure and Spectroscopy IV
HK 19.3: Vortrag
Mittwoch, 1. September 2021, 17:15–17:30, H3
Study of the B → J/ψ φ K decay channel at Belle — •Ashish Thampi1, Elisabetta Prencipe2, and James Ritman1 — 1Forschungszentrum Juelich, Juelich, Germany — 2JLU-University of Giessen, Giessen, Germany
Even though the B → J/ψ φ K process is most likely a three body decay, it can also proceed as a quasi-two body decay where J/ψ and φ are daughters of a hybrid or charmonium state. Investigating this decay is important in the search for possible ccss exotic states in the J/ψ φ invariant mass system. The LHCb has found resonant states in the J/ψ φ and the J/ψ K invariant mass distributions in the charged B decay mode. In order to provide a better understanding of the process and disclose the nature of these enhancements, we analyze the invariant mass systems in both, charged and neutral B meson decays, B± → J/ψ φ K± and B0 → J/ψ φ KS0. This analysis is performed using the 771fb−1 integrated luminosity data collected at the energy in the center of mass of Υ(4S) resonance by the Belle detector. We measure the branching fraction for these B decays and observe resonant states in the Jψ φ and the J/ψ K invariant mass systems. This analysis is a part of the DFG project no. 389090153.