Rare bs - decays in the covariant quark model
DOI:
https://doi.org/10.26577/2218-7987-2014-5-2-68-76Abstract
Considering the surge of great interest to the problem of CP violation recently observed in a Bs Bs system, decays of Bs to D D and color suppressed decay Bs → J/ψ φ attracted the attention of both theorists and experimentalists. We find new values for the covariant quark model parameters (with built-in infrared confinement) in the meson sector by fitting the leptonic decay constants and a number of electromagnetic decays, and then evaluate in a parameter-free way the form factors of B(Bs) → P(V) transitions within an entire kinematic range of the momentum transfer. Our results are applied to calculating the widths of nonleptonic Bs decays to , * * S S S S S S DD D D DD and * * S S D D . The largest contribution to ΔΓ for s s B B system comes from these modes. The nonleptonic decay Bs → J/ψφ is also considered. Though this decay mode is color suppressed it has important implications in the search for possible CP-violating novel physics effects in s s B B mixing.References
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9. Khodjamirian A., Mannel T., and Offen N. Form factors from light cone sum rules with BMeson Distribution Amplitudes // Phys. Rev. D –
2007. – Vol. 75. – P. 054013.
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long-distance effects // Phys. Rev. D. – 2004. –
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1007. – P. 098.
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Physics. – 2011. – V.1107. – P.067.
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// Phys. Rev. D. – 2007. – Vol. 76. –
P.034018.
14. Melikhov D., Nikitin N. and Simula S. Rare exclusive semileptonic b –> s transitions in the standard model // Phys. Rev. D. – 1998. – Vol. 57.
– P.6814.
15. Melikhov D. Dispersion approach to quarkbinding e.ects in weak decays of heavy mesons // Eur. Phys. J. direct C. – 2002. – Vol. 4. – P.1.
16. Ebert D., Faustov R.N., Galkin V.O. New analysis of semileptonic B decays in the relativistic
quark model // Phys. Rev. D. – 2007. – V. 75. –
P.074008.
17. Ladisa M., Nardulli G., Santorelli P. Semileptonic and rare B meson decays into a light pseudoscalar meson // Phys. Lett. B. – 1999. –
V.455. – P.283-290.
18. Colangelo P., De Fazio F., Ladisa M.
Nardulli G., Santorelli P. and Tricarico A. Semileptonic and rare B meson transitions in a QCD relativistic potential model // Eur. Phys. J.C. –
1999. – V.8. – P.81.
19. Colangelo P., De Fazio F., Santorelli P.,
Scrimieri E. QCD sum rule analysis of the decays
BK l l and BK* ll // Phys. Rev. D. –
1996. – V.53. – P.3672-3686.
20. Colangelo P., Santorelli P. Dependence of the form-factors of B lepton neutrino on the heavy quark mass // Phys. Lett. B. – 1994. – V.327. – P.123-128.
21. Ivanov M. A., K.orner J. G., Kovalenko S. G., Santorelli P. and Saidullaeva G. G. Form factors for semileptonic, nonleptonic and rare B (Bs) meson decays // Phys. Rev. D. – 2012. – Vol. 85. –
P.034004.
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How to Cite
Zhaugasheva, S. A., Saidullaeva, G. G., Nurbakova, G. S., Khabyl, N., & Bekbaev, A. K. (2014). Rare bs - decays in the covariant quark model. International Journal of Mathematics and Physics, 5(2), 68–76. https://doi.org/10.26577/2218-7987-2014-5-2-68-76
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Nuclear Physics and Nanotechnology
