X, Y, Z Search at Belle II

Abstract

Search for exotics has increased importance since the observation of the X(3872), 13 years ago, announced by the Belle Collaboration. The observation of pentaquark states by LHCb, and the Z-charged states observed at Belle and BES III have raised even more the attention to the field. Presently several states are observed that do not fit potential models, and looking for them in different production mechanisms and search for their decay modes it is important, as well as to do precise measurement of their mass, width, lineshape. We shortly report in this note about the plan in searching for exotics at Belle II at KEK (Tsukuba, Japan), that just ended the Phase-II running period, and show the first re-discovery results using 5 pb${}^{-1}$ integrated luminosity.

6 pages, 2 figures. Proceedings of the CHARM2018 conference, on behalf of the Belle II collaboration. arXiv admin note: text overlap with arXiv:1806.10930

References in corpus (5)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• The Physics of the B Factories
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle