Measurement Of The Inclusive Charmless Semileptonic Branching Ratio Of B Mesons And Determination Of Verticalv Sub Ub Vertical

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Measurement Of The Inclusive Charmless Semileptonic Branching Ratio Of B Mesons And Determination Of Verticalv Sub Ub Vertical

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of The Inclusive Charmless Semileptonic Branching Ratio Of B Mesons And Determination Of Verticalv Sub Ub Vertical written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 million B[bar B] 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 hadronic mass distribution and is used to determine the ratio of branching fractions[Beta]([bar B][yields] X[sub u]l[bar[nu]])/[Beta]([bar B][yields] Xl[bar[nu]])= (2.06[+-] 0.25(stat)[+-] 0.23(syst)[+-] 0.36(theo)) x 10[sup -2]. Using the measured branching fraction for inclusive semileptonic B decays, we find[Beta]([bar B][yields] X[sub u]l[bar[nu]])= (2.24[+-] 0.27(stat)[+-] 0.26(syst)[+-] 0.39(theo)) x 10[sup -3] and derive the CKM matrix elementV[sub ub]= (4.62[+-] 0.28(stat)[+-] 0.27(syst)[+-] 0.48(theo)) x 10[sup -3].

Measurement Of The Inclusive Charmless Semileptonic Branching Ratio Of B Mesons And Determination Of

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of The Inclusive Charmless Semileptonic Branching Ratio Of B Mesons And Determination Of written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 million B{bar B} 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 hadronic mass distribution and is used to determine the ratio of branching fractions [Beta]({bar B} → X{sub u}l{bar {nu}})/[Beta]({bar B} → Xl{bar {nu}}) = (2.06 ± 0.25(stat) ± 0.23(syst) ± 0.36(theo)) x 10−2. Using the measured branching fraction for inclusive semileptonic B decays, we find [Beta]({bar B} → X{sub u}l{bar {nu}}) = (2.24 ± 0.27(stat) ± 0.26(syst) ± 0.39(theo)) x 10−3 and derive the CKM matrix element.

Measurement Of The Partial Branching Fraction For Inclusive Semileptonic B Meson Decays To Light Hadrons B Xu L Nu And An Improved Determination Of The Quark Mixing Matrix Element V Ub

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Author : Alexei Volk
language : en
Publisher:
Release Date : 2009

Measurement Of The Partial Branching Fraction For Inclusive Semileptonic B Meson Decays To Light Hadrons B Xu L Nu And An Improved Determination Of The Quark Mixing Matrix Element V Ub written by Alexei Volk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.

Determination Of Verticalv Sub Cb Vertical And Results From Babar

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Author :
language : en
Publisher:
Release Date : 2004

Determination Of Verticalv Sub Cb Vertical And Results From Babar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The CKM matrix element amplitude V[sub cb] was determined using the data collected by the BABAR detector. The partial branching fraction, lepton-energy moments, and hadron-mass moments were measured in inclusive semileptonic decays B [yields] X[sub c][ell][nu]. A global fit to a Heavy-Quark-Expansion calculation allowed precise determination of V[sub cb], m[sub b], m[sub c], [Beta](B [yields] X[sub c][ell][nu]) and four non-perturbative parameters.

Measurements Of The Inclusive Semileptonic Branching Fraction Of B Mesons At The Upsilon 4s Resonance

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Author : Ruoyu Wang
language : en
Publisher:
Release Date : 1994

Measurements Of The Inclusive Semileptonic Branching Fraction Of B Mesons At The Upsilon 4s Resonance written by Ruoyu Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

Measurement Of The B0 To Pi L Nu And B To Pi0 L Nu Branching Fractions And Determination Of

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Author :
language : en
Publisher:
Release Date : 2005

Measurement Of The B0 To Pi L Nu And B To Pi0 L Nu Branching Fractions And Determination Of written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.

The authors report preliminary measurements of the charmless exclusive semileptonic branching fractions of the B° → ?−l+? and B+ → ?°l+? decays, based on 211 fb−1 of data collected at the ?(4S) resonance by the BABAR detector. In events in which the decay of one B meson to a hadronic final state is fully reconstructed, the semileptonic decay of the second B meson is identified by the detection of a charged lepton and a pion. They measure the partial branching fractions for B° → ?−l+? and B+ → ?°l+? in three regions of the invariant mass squared of the lepton pair, and they obtain the total branching fractions ?(B° → ?−l+?) = (1.14 ± 0.27{sub stat} ± 0.17{sub syst}) x 10−4 and ?(B+ → ?°l+?) = (0.86 ± 0.22{sub stat} ± 0.11{sub syst}) x 10−4. Using isospin symmetry, they measure the combined total branching fraction ?(B° → ?−l+?) = (1.28 ± 0.23{sub stat} ± 0.16{sub syst}) x 10−4. Theoretical predictions of the form-factor are used to determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element.

Measurement Of The B Meson Inclusive Semileptonic Branching Fraction And Electron Energy Moments

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Author : Christopher John Stepaniak
language : en
Publisher:
Release Date : 2004

Measurement Of The B Meson Inclusive Semileptonic Branching Fraction And Electron Energy Moments written by Christopher John Stepaniak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

A Measurement Of The Semileptonic Branching Fraction Of The B S Meson

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Author :
language : en
Publisher:
Release Date : 2012

A Measurement Of The Semileptonic Branching Fraction Of The B S Meson written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

We report a measurement of the inclusive semileptonic branching fraction of the B{sub s} meson using data collected with the BABAR detector in the center-of-mass energy region above the?(4S) resonance. We use the inclusive yield of? mesons and the? yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B{sub s} mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B{sub s} meson is determined to be?(B{sub s} → l?X) = 9.5{sub -2.0}{sup +2.5}(stat){sub -1.9}{sup +1.1}(syst)%, where l indicates the average of e and?

Measurement Of The Inclusive Semileptonic Branching Fraction Of B Mesons Using Fully Reconstructed B Mesons As Tags In The Babar Experiment

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Author : Valery Miftakhov
language : en
Publisher:
Release Date : 2003

Measurement Of The Inclusive Semileptonic Branching Fraction Of B Mesons Using Fully Reconstructed B Mesons As Tags In The Babar Experiment written by Valery Miftakhov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

Measurement Of The Inclusive Semileptonic Branching Fraction Of B Mesons Using Fully Reconstructed B Mesons As Tags In The Babar Experiment

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Author :
language : en
Publisher:
Release Date : 2004

Measurement Of The Inclusive Semileptonic Branching Fraction Of B Mesons Using Fully Reconstructed B Mesons As Tags In The Babar Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The BABAR experiment at SLAC provides an opportunity for measurement of the Standard Model parameters describing CP violation. A method of measuring the CKM matrix element.