B →ρlν form factors in lattice QCD


Bowler, K.C., Flynn, J.M., Gill, J.F. and Maynard, C.M. UKQCD Collaboration (2004) B →ρlν form factors in lattice QCD. Journal of High Energy Physics, 5, (035), 1-17. (doi:10.1088/1126-6708/2004/05/035).

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Description/Abstract

We present results from quenched lattice QCD for the form factors for the decay B→ρlν. The calculations are performed using a nonperturbatively improved action and operators at two values of the lattice spacing. The bottom quark mass is reached by extrapolation from simulations performed with heavy quark masses around the charm mass. Our primary result is for the partially integrated decay rate ΓPI over the range 12.7 GeV2<q2<18.2 GeV2: ΓPI = 4.9+12-10+ 0-14 × 1012 s-1 |Vub|2.

Item Type: Article
ISSNs: 1126-6708 (print)
Related URLs:
Keywords: quark masses and SM parameters, weak decays, B-Physics, lattice QCD
Subjects: Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Physics and Astronomy
University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics
ePrint ID: 11219
Date Deposited: 19 Aug 2008
Last Modified: 27 Mar 2014 18:03
URI: http://eprints.soton.ac.uk/id/eprint/11219

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