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Charm production in ep interaction at HERA and evidence for a narrow anti-charmed baryon state at H1

K. Lipka
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Abstract

Recent results on open charm production at HERA are presented. Charm quarks are identified via the reconstruction of D-mesons. The charm contribution to the proton structure function is shown. Evidence for an exotic anti-charmed baryon state observed by H1 is presented. The data show a narrow resonance in the D*p invariant mass combination at 3099+-3(stat)+-5(syst) MeV. The resonance is interpreted as an anti-charmed baryon with minimal constituent quark content uuddcbar together with its charge conjugate. Such a signal is not observed in a similar preliminary ZEUS analysis.

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K. Lipka. 2004-05-18. Charm production in ep interaction at HERA and evidence for a narrow anti-charmed baryon state at H1. https://arxiv.org/abs/hep-ex/0405051

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