Evidence for a Narrow Anti-Charmed Baryon State

Details Evidence for a Narrow Anti-Charmed Baryon State Evidence for a Narrow Anti-Charmed Baryon State

2004-03-11

arxiv.org/abs/hep-ex/0403017v1

Phys.Lett.B588:17,2004

Physics

High Energy Physics

High Energy Physics - Experiment

20 pages, 7 figures and 2 tables

Scientific paper

10.1016/j.physletb.2004.03.012

A narrow resonance in D*- p and D*+ pbar invariant mass combinations is observed in inelastic electron-proton collisions at centre-of-mass energies of 300 GeV and 320 GeV at HERA. The resonance has a mass of 3099 \pm 3 (stat.) \pm 5 (syst.) MeV and a measured Gaussian width of 12 \pm 3 (stat.) MeV, compatible with the experimental resolution. The resonance is interpreted as an anti-charmed baryon with a minimal constituent quark composition of uuddcbar, together with the charge conjugate.

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