München 2019 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 18: Hadron Structure and Spectroscopy III
HK 18.1: Gruppenbericht
Dienstag, 19. März 2019, 14:00–14:30, HS 13
Search for four- and six-quark exotics with charm and strange quark content. — •Elisabetta Prencipe1, Jens Soeren Lange2, James Ritman1, and Ashish Thampi1 — 1Forschungszentrum Juelich, IKP1, Leo Brandt strasse, 52428 Juelich, Germany — 2JLU, Physikalisches Institut II, Heinrich-Buff-Ring 16, Giessen, Germany
The e+e− asymmetric colliders BaBar and Belle collected a huge data sets, roughly 1.5 ab−1, running at the energy in the center of mass of Υ(nS), where n =1, 2, 3, 4, 5 (n = 5 at Belle, only). Even if they stopped data taking since almost 10 years, this represents the biggest available statistics at e+e− colliders, with great and unique possibilities in data analysis.
The present report summarizes the main goals of a combined BaBar+Belle data analysis project, approved since 1 years at FZJ, focused on the search of 4-quark states with c c s s quark content, which main purpose is to analyze the invariant mass systems of J/ ψ φ and Ds+ Ds0*(2317)− in different decay mechanisms. This is the first approved project in hadron spectroscopy with combined BaBar+Belle data sets. Possible search for 6-quark bound states is also possible and here introduced, with extrapolation and expectations with the full available statistics. Preliminary results on MC simulations and off-resonance data are presented, in an analysis of the J/ψ φ invariant mass system performed in continuum and through B decays. Feasibility studies are also shown for the analysis of the Ds+ Ds0*(2317)− invariant mass system.