UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Measurement of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar with B -> pe nu decays

Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; ... BABAR Collaboration, ; + view all (2003) Measurement of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar with B -> pe nu decays. PHYS REV LETT , 90 (18) , Article 181801. 10.1103/PhysRevLett.90.181801. Green open access

[img]
Preview
PDF
1303620.pdf

Download (159kB)

Abstract

We present a measurement of the branching fraction for the rare decays B-->rhoenu and extract a value for the magnitude of V-ub, one of the smallest elements of the Cabibbo-Kobayashi-Maskawa quark-mixing matrix. The results are given for five different calculations of form factors used to parametrize the hadronic current in semileptonic decays. Using a sample of 55x10(6) B (B) over bar meson pairs recorded with the BABAR detector at the PEP-II e(+)e(-) storage ring, we obtain B(B-0-->rho(-)e(+)nu)=(3.29+/-0.42+/-0.47+/-0.55)x10(-4) and \V-ub\=(3.64+/-0.22+/-0.25(-0.56)(+0.39))x10(-3), where the uncertainties are statistical, systematic, and theoretical, respectively.

Type: Article
Title: Measurement of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar with B -> pe nu decays
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.90.181801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.90.181801
Language: English
Additional information: © 2003 The American Physical Society
Keywords: B-MESON DECAYS, FORM-FACTORS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303620
Downloads since deposit
82Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item