Lattice results for the decay constant of heavy-light vector mesons

Claude Bernard, Peter Williams, Saumen Datta, Steven Gottlieb, Carleton Detar, Urs M. Heller, Craig McNeile, Kostas Orginos, Robert Sugar, Doug Toussaint

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15 Scopus citations

Abstract

We compute the leptonic decay constants of heavy-light vector mesons in the quenched approximation. The reliability of lattice computations for heavy quarks is checked by comparing the ratio of vector to pseudoscalar decay constant with the prediction of heavy quark effective theory in the limit of an infinitely heavy quark mass. Good agreement is found. We then calculate the decay constant ratio for B mesons: f B*/f B = 1.01(0.01)( -0.01 +0.04). We also quote quenched f B* = 177(6)(17) MeV.

Original languageEnglish (US)
Article number014510
JournalPhysical Review D
Volume65
Issue number1
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Bernard, C., Williams, P., Datta, S., Gottlieb, S., Detar, C., Heller, U. M., McNeile, C., Orginos, K., Sugar, R., & Toussaint, D. (2002). Lattice results for the decay constant of heavy-light vector mesons. Physical Review D, 65(1), [014510]. https://doi.org/10.1103/PhysRevD.65.014510