1. B → χc1(1P,2P)K decays in QCD factorization and X(3872).
- Author
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Ce Meng, Ying-Jia Gao, and Kuang-Ta Chao
- Subjects
- *
FACTORIZATION , *QUANTUM chromodynamics , *LOGARITHMIC functions , *LIGHT cones , *QUARKONIUMS - Abstract
B→χc1(1P,2P)K decays are studied in QCD factorization by treating charmonia as nonrelativistic bound states. No infrared divergences exist in the vertex corrections, while the logarithmic end-point singularities in the hard spectator corrections can be regularized by a momentum cutoff. Within certain uncertainties, we find that the B→χc1(2P)K decay rate can be comparable to B→χc1(1P)K and get Br(B0→χc1′K0)=Br(B+→χc1′K+)≈(2-4)×10-4. This might imply a possible interpretation for the newly discovered X(3872): that this state has a dominant JPC=1++(2P) cc̅ component, but it is mixed with a substantial D0D̅*0+D*0D̅0 component. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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