Aubert, B;
Barate, R;
Boutigny, D;
Couderc, F;
Karyotakis, Y;
Lees, JP;
Poireau, V;
... BaBar Collaboration; + view all
(2006)
Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence.
PHYS REV LETT
, 96
(22)
, Article 221801. 10.1103/PhysRevLett.96.221801.
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Abstract
We report two novel determinations of vertical bar V-ub vertical bar with reduced model dependence, based on measurements of the mass distribution of the hadronic system in semileptonic B decays. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson from Y(4S) -> B (B) over bar events. In one approach, we combine the inclusive (B) over bar -> X(u)l (v) over bar rate, integrated up to a maximum hadronic mass m(X) < 1.67 GeV/c(2), with a measurement of the inclusive B -> X-s gamma photon energy spectrum. We obtain vertical bar V-ub vertical bar = (4.43 +/- 0.38(stat) +/- 0.25(syst) +/- 0.29(theo)) x 10(-3). In another approach we measure the total (B) over bar -> X(u)l (v) over bar rate over the full phase space and find vertical bar V-ub vertical bar = 3.84 +/- 0.70(stat) +/- 0.30(syst) +/- 0.10(theo)) x 10(-3).
| Type: | Article |
|---|---|
| Title: | Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.221801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.221801 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | MESON DECAYS, HIGH-ENERGY, SPECTRUM, PHYSICS |
| UCL classification: | UCL 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/1303777 |
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