Measurement of the Inclusive Charmless Semileptonic Branching Ratio ofBMesons and Determination of|Vub|
نویسندگان
چکیده
منابع مشابه
Measurement of the inclusive charmless semileptonic branching ratio of B mesons and determination of |V ub|.
We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 x 10(6) (-)BB events recorded with the BABAR detector at the Upsilon(4S) resonance. 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. The number of signal events is extracted from the mass distri...
متن کاملcharmless semileptonic branching ratio of b hadrons
We calculate the inclusive charmless semileptonic decay width of the B meson using a QCD-based approach. This approach is able to account for both dynamic and kinematic effects of nonperturbative QCD. The charmless semileptonic decay width is found to be enhanced by long-distance strong interactions by +(7± 5)% with respect to the free quark decay width. Using the resulting theoretical value fo...
متن کاملMeasurement of partial branching fractions of inclusive charmless Bmeson
P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe, V. Tisserand, J. Garra Tico, E. Grauges, M. Martinelli, D.A. Milanes, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, D. N. Brown, L. T. Kerth, Yu. G. Kolomensky, G. Lynch, I. L. Osipenkov, H. Koch, T. Schroeder, D. J. Asgeirsson, C. Hearty, T. S. Mattison, J. A. McKenna, A. Khan, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B....
متن کاملFirst Measurement of the Inclusive Charmless B Decay Branching Ratio and Determination of the B ! C Cs Rate Delphi Collaboration Delphi Collaboration Measurement of the Inclusive Charmless and Double Charm B Decay Branching Ratios with the B-tagging Probability Technique
A measurement of the inclusive B decay branching ratios into charmless and double charmed nal states has been performed, using the data collected by the DELPHI experiment at LEP from 1992 to 1995, by mean of two diierent techniques that are presented in two diierent notes. In the rst analysis, the results are extracted from a t to the b-tagging probability distribution based on the precise impa...
متن کاملEuropean Organization for Nuclear Research Measurement of the Inclusive Charmless Semileptonic Branching Fraction of Beauty Hadrons and a Determination of Jv Ub J at Lep
A measurement of the inclusive charmless semileptonic branching fraction of beauty hadrons, b ! X u ``, has been performed using almost two million hadronic Z decays collected by the L3 experiment at LEP, yielding the result:
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.92.071802