New heavy-light mesons Qq̄

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Abstract

We succeed in reproducing the ℓ = 1 B mesons B1 (5720), B2* (5745), and Be2* (5839) that were recently reported by D0 and CDF, using our semi-relativistic quark potential model, which also succeeds in predicting the mass spectra of the narrow DsJ, as well as broad D0*(0+) and D1′ (1+) particles observed a couple of years ago. The mass of higher excited states (ℓ = 1, 2) of B and Bs mesons, which have not yet been observed, is also predicted to first order in p/mb, with the internal quark momentum p and the 6 quark mass mb. We find that the corresponding BsJ are below the BK/B*K threshold and should have narrow decay widths, contrary to most other predictions. Also, already established states (ℓ = 0 and ℓ = 1) of D, Ds, B, and B s heavy mesons are simultaneously reproduced in good agreement with experimental data, within one percent accuracy. To calculate these D/D s and B/Bs heavy mesons, we use different values of the strong coupling, αsc and αsb, respectively.

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APA

Matsuki, T., Morii, T., & Sudoh, K. (2007). New heavy-light mesons Qq̄. Progress of Theoretical Physics, 117(6), 1077–1098. https://doi.org/10.1143/PTP.117.1077

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