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

Bernard, Claude; Williams, Peter; Datta, Saumen; Gottlieb, Steven; DeTar, Carleton; Heller, Urs M.; McNeile, Craig; Orginos, Kostas; Sugar, Robert and Toussaint, Doug (2001) Lattice results for the decay constant of heavy-light vector mesons. Physical Review D, 65 . Article Number: 014510. ISSN 1550-2368 (online); 1550-7998 (print)

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Official URL: http://link.aps.org/abstract/PRD/v65/e014510

Cited 8 times in WoS

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 infinitely heavy quark mass. Good agreement is found. We then calculate the decay constant ratio for B mesons: $f_{B^*}/f_B= 1.01(0.01)(^{+0.04}_{-0.01})$. We also quote quenched $f_{B^*}=177(6)(17)$ MeV.

Item Type:Article
Additional Information:LTH 524. arXiv Number: arXiv:hep-lat/0109015v2. Additional citation information: PHYSICAL REVIEW D, VOLUME 65, 014510; 0556-2821/2001/65(1)/014510(5). 5 pages. Published 11 December 2001. Issue: January 2002.
Uncontrolled Keywords:PERTURBATION-THEORY; FERMIONS; SPECTROSCOPY; OPERATORS; SYMMETRY; QUARKS; NRQCD
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1103/PhysRevD.65.014510
Publisher's Statement:©2001 The American Physical Society
Related URLs:
Refereed:Yes
Status:Published
ID Code:561
Deposited On:31 Oct 2008 13:52
Last Modified:20 May 2011 12:06

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