Bochum 2018 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 1: Hadron Structure and Spectroscopy I
HK 1.2: Talk
Monday, February 26, 2018, 14:30–14:45, HZO 50
Inclusive charmonium production in energy region above 4 GeV at the BESIII experiment — •Simon Nakhoul, Klaus Goetzen, Ralf Kliemt, Frank Nerling, and Klaus Peters for the BESIII collaboration — GSI Helmholtz Center for heavy Ion research, Planckstrasse 1, Darmstadt, Germany
Since 2003, the XYZ charmonium-like states have become a hot topic in the hadron spectroscopy field.
The Beijing Spectrometer III (BESIII) at the Beijing Electron-Positron Collider II (BEPC II) is one of the leading experiments in the XYZ-related physics. It has brought us numerous breakthrough discoveries like the observation of Zc(3900) and Zc(4020).
In order to understand the nature of these intriguing states and their decay patterns, an inclusive analysis is performed using the recoil mass technique approach for different particles (π+π−, K+K−, π0π0, KsKs) at center of mass energies above 4 GeV.
The aim of this analysis is to search for new unobserved XYZ decay channels and to provide accurate inclusive cross section measurements for e+e− → Xc c + π+ π− (Xc c=J/ψ,hc,ψ(2S) ...) and compare them to the corresponding exclusive BESIII measurements.
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This work is supported by HGS-HIRe.