Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Hadronenstruktur und -spektroskopie

HK 47.3: Talk

Thursday, March 20, 2014, 17:30–17:45, HZ 1+2

Electronic width of X(3872) — Achim Denig, Zhiqing Liu, and •Martin Ripka — KPH Uni Mainz

The structure and origin of the exotic X(3872) resonance, is still a subject of investigations. Recently it was also observed at BESIII. The X(3872) is a candidate for a Tetraquark, a Meson molecule or various other models. A precise measurement of its electronic width can help to support or disfavor some of the theoretical models. Although it is not a vector resonance, we found methods to study the structure of X(3872) with ISR methods at the BESIII experiment in Beijing/China. In this talk we present preliminary results of a new measurement of the upper limit of the electronic width of X(3872).