f_B^{stat} and μ_π^2 in quasiclassical approximation of sum rules

Abstract

In the framework of sum rules with a use of quarkonium mass spectrum, evaluated in the quasiclassical approximation, estimates of leptonic constant $f_B^{stat}\simeq 320\pm 60$ MeV in a static limit and for the average heavy quark momentum squared ${\mu }_{\pi }^2\simeq 0.5\pm 0.1$ GeV${}^2$ are obtained.

7 pages, LATEX file

References in corpus (4)

• Heavy Quark Symmetry
• Next--to--Leading Order Corrections to Meson Masses in the Heavy Quark Effective Theory
• How to Measure Kinetic Energy of the Heavy Quark Inside B Mesons?
• Higher-Order Perturbative Corrections to $b\to c$ Transitions at Zero Recoil

Cited by in corpus (2)

• Calculation of the pentaquark width by QCD sum rule
• Prospects for observing the ${\eta }_t$ $\to$ $W^{+}{W}^{-}$ decay at the HL-LHC