QCD sum rule study for a possible charmed pentaquark [Theta] sub(c) (3250)

QCD sum rule study for a possible charmed pentaquark [Theta] sub(c) (3250)

We use QCD sum rules to study the possible existence of a [Theta] sub(c)(3250) charmed pentaquark. We consider the contributions of condensates up to dimension 12 and work at leading order in alpha sub(s). We obtain m[Theta] sub(c) = (3.29 + or - 0.13) GeV, compatible with the mass of the structure...

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Veröffentlicht in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2013-10, Vol.88 (7)
Hauptverfasser: Albuquerque, Raphael M, Lee, Su Houng, Nielsen, Marina
Format: Artikel
Sprache:eng
Schlagworte:
Channels
Compatibility
Condensates
Cosmology
Decay
Gravitation
Sum rules
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Zusammenfassung:We use QCD sum rules to study the possible existence of a [Theta] sub(c)(3250) charmed pentaquark. We consider the contributions of condensates up to dimension 12 and work at leading order in alpha sub(s). We obtain m[Theta] sub(c) = (3.29 + or - 0.13) GeV, compatible with the mass of the structure seen by BABAR Collaboration in the decay channel B super(-) arrow right (ProQuest: Formulae and/or non-USASCII text omitted). The proposed state is compatible with a previous proposed pentaquark state in the anticharmed sector.
ISSN:1550-7998
1550-2368