QCD Sum Rule Study for a Possible Charmed Pentaquark \Theta c(3250)
High Energy Physics - Phenomenology
2013-10-30 v1
Abstract
We use QCD sum rules to study the possible existence of a \Theta c(3250) charmed pentaquark. We consider the contributions of condensates up to dimension-10 and work at leading order in \alpha_s. We obtain m(\Theta c) = (3.21 +/- 0.13) GeV, compatible with the mass of the structure seen by BaBar Collaboration in the decay channel B- -> p- \Sigma c++ pi- pi-. The proposed state is compatible with a previous proposed pentaquark state in the anti-charmed sector.
Keywords
Cite
@article{arxiv.1306.4182,
title = {QCD Sum Rule Study for a Possible Charmed Pentaquark \Theta c(3250)},
author = {R. M. Albuquerque and S. H. Lee and M. Nielsen},
journal= {arXiv preprint arXiv:1306.4182},
year = {2013}
}
Comments
8 pages, 7 figures, 1 table