Eur. Phys. J. A (2008) 38: 137-140
https://doi.org/10.1140/epja/i2008-10645-y

Regular Article - Experimental Physics

Determination of the b -quark mass and nonperturbative parameters in semileptonic B -meson decays at BABAR^⋆

Ernest Orlando Lawrence Berkeley National Laboratory and University of California, 94720, Berkeley, CA, USA

^* e-mail: kerstin@slac.stanford.edu

Received: 4 April 2008
Revised: 30 August 2008
Published online: 8 October 2008

Abstract

Knowing the mass of the b -quark is essential to the study of the structure and decays of B -mesons as well as to future tests of the Higgs mechanism of mass generation. We present recent preliminary measurements of the b -quark mass and related nonperturbative parameters from moments of kinematic distributions in charmed and charmless semileptonic B -meson decays. Their determination from charmless semileptonic B -meson decays is the first measurement in this mode. The data were collected by the BABAR detector at the PEP-II asymmetric-energy e ⁺ e ^- -collider at the Stanford Linear Accelerator Center at a center-of-mass energy of 10.58GeV.