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B meson decay constants f(Bc), f(Bs) and f(B) from QCD sum rules

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B meson decay constants f(Bc), f(Bs) and f(B) from QCD sum rules

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Baker, Michael J.; Bordes Villagrasa, José M.; Domínguez, Cesáreo A.; Peñarrocha Gantes, José Antonio; Schilcher, K.

This document is a artículoDate2014

Este documento está disponible también en : http://hdl.handle.net/10550/38946

Finite energy QCD sum rules with Legendre polynomial integration kernels are used to determine the heavy meson decay constant f(Bc), and revisit f(B) and f(Bs). Results exhibit excellent stability in a wide range of values of the integration radius in the complex squared energy plane, and of the order of the Legendre polynomial. Results are f(Bc) = 528 +/- 19 MeV, f(B) = 186 +/- 14 MeV, and f(Bs) = 222 +/- 12 MeV.

Baker, Michael J. Bordes Villagrasa, José M. Domínguez, Cesareo A. Peñarrocha Gantes, José Antonio Schilcher, K. 2014 B meson decay constants f(Bc), f(Bs) and f(B) from QCD sum rules Journal of High Energy Physics 07 7 032-1 032-16

http://dx.doi.org/10.1007/JHEP07(2014)032