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arXiv · 1306.4182

QCD Sum Rule Study for a Possible Charmed Pentaquark Θc(3250)

R. M. Albuquerque·S. H. Lee·M. Nielsen
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Abstract

We use QCD sum rules to study the possible existence of a Θc(3250) charmed pentaquark. We consider the contributions of condensates up to dimension-10 and work at leading order in α_s. We obtain m(Θc) = (3.21 +/- 0.13) GeV, compatible with the mass of the structure seen by BaBar Collaboration in the decay channel B- -> p- Σc++ pi- pi-. The proposed state is compatible with a previous proposed pentaquark state in the anti-charmed sector.

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R. M. Albuquerque, S. H. Lee, M. Nielsen. 2013-06-18. QCD Sum Rule Study for a Possible Charmed Pentaquark Θc(3250). https://doi.org/10.1103/physrevd.88.076001

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