Mainz 2022 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Hadron Structure and Spectroscopy III

HK 19.2: Vortrag

Montag, 28. März 2022, 16:30–16:45, HK-H8

Amplitude analysis of the decays B_S → ψ(2S)K⁺K⁻ and B_S → ψ(2S)π⁺π⁻ — •Piet Nogga — Rheinische Friedrich-Wilhelms Universität Bonn

We present ψ(2S)K⁺K⁻ and ψ(2S)π⁺π⁻ final state data originating from B_S mesons recorded during Run I and Run II at the LHCb experiment corresponding to an integrated luminosity of 1,2 and 6 fb⁻¹ at √s = 7,8 and 13 TeV, respectively, with the goal of investigating the spectrum of scalar mesons. These are particularly interesting as they may contain possible glueball contributions, a discussion which was recently rekindled by a BESIII analysis regarding radiative charmonium decays.

The unambiguous extraction of resonance parameters requires sophisticated amplitude models and techniques for the simultaneous analysis of both channels.

This talk will present a preliminary selection of these final states and discuss the coupled channel analysis.