Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle

Details Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle

2004-05-13

arxiv.org/abs/hep-ex/0405022v2

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk at 39th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 21-28 Mar 2004

Scientific paper

We report the measurement of an inclusive partial branching fraction for charmless semileptonic B decay and the extraction of |V_{ub}|. Candidates for B-> X_u l nu are identified using a novel X_u-reconstruction method with simultaneous requirements on the hadronic recoil mass (M_X) and the invariant mass squared of lepton-neutrino system (q^2). Based on 86.9 fb^{-1} of data taken with the Belle detector, we obtain Delta{B}(B->X_u l nu ; M_X<1.7GeV, q^2>8.0GeV^2) = (7.37 +- 0.89(stat.) +- 1.12(syst.) +- 0.55(b ->c) +- 0.24(b->u)) x 10^{-4} and determine |V_{ub}| = (4.66 +- 0.28(stat.) +- 0.35(syst.) +- 0.17(b->c) +- 0.08(b->u) +- 0.58(theory)) x 10^{-3}.

Affiliated with

Also associated with

No associations

Rating

Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of |Vub| with Simultaneous Requirements on M_X and q^2 by Belle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-618409