Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10724491 | Physics Letters B | 2008 | 5 Pages |
Abstract
Studying our semirelativistic potential model and the numerical results, which succeeds in predicting and reproducing recently discovered higher resonances of D, Ds, B, and Bs, we find a simple expression for the mass gap between two spin multiplets of heavy-light mesons, (0â,1â) and (0+,1+). The mass gap between chiral partners defined by ÎM=M(0+)âM(0â) and/or M(1+)âM(1â) is given by ÎM=M(0+)âM(0â)=M(1+)âM(1â)âÎQâmq in the limit of heavy quark symmetry, and including 1/mQ corrections, we have ÎMâÎQâmq+(1.28Ã105+4.26Ã102â
mq)/mQ with ÎQâ300MeV, a light quark mass mq, and a heavy quark mass mQ. This equation holds both for D and Ds heavy mesons. Our model calculations for the B and Bs also follow this formula.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Takayuki Matsuki, Toshiyuki Morii, Kazutaka Sudoh,