Measurement Of The Relative Branching Fractions Of Bbar To D D D L Nubar L Decays In Events With A Fully Reconstructed B Meson

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Measurement Of The Relative Branching Fractions Of Bbar To D D D L Nubar L Decays In Events With A Fully Reconstructed B Meson

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Relative Branching Fractions Of Bbar To D D D L Nubar L Decays In Events With A Fully Reconstructed B 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 2007 with categories.

We determine the relative branching fractions of semileptonic B decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed B meson in a sample of 362 million B{bar B} pairs collected at the [Upsilon](4S) resonance with the BABAR detector. A simultaneous fit to a set of discriminating variables is performed on a sample of {bar B} → DXl−{bar {nu}}{sub {ell}} decays to determine the contributions from the different channels.

Measurement Of The Branching Fractions Of Bbar D L Nubar L Decays In Events Tagged By A Fully Reconstructed B Meson

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Author :
language : en
Publisher:
Release Date : 2008

Measurement Of The Branching Fractions Of Bbar D L Nubar L Decays In Events Tagged By A Fully Reconstructed B 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 2008 with categories.

We report a measurement of the branching fractions of {bar B} 2!D** l−{bar {nu}}{sub l} decays based on 417 fb−1 of data collected at the [Upsilon](4S) resonance with the BABAR detector at the PEP-II ee− storage rings. Events are selected by fully reconstructing one of the B mesons in a hadronic decay mode. A fit to the invariant mass differences m(D{sup (*)})-m(D{sup (*)}) is performed to extract the signal yields of the different D** states. We observe the {bar B} 2!D**{ell}−{bar {nu}}{sub {ell}} decay modes corresponding to the four D** states predicted by Heavy Quark Symmetry with a significance greater than six standard deviations including systematic uncertainties.

Study Of Bbar To Xu L Nubar Decays In Bbbar Events Tagged By A Fully Reconstructed B Meson Decay And Determination Of

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Author :
language : en
Publisher:
Release Date : 2012

Study Of Bbar To Xu L Nubar Decays In Bbbar Events Tagged By A Fully Reconstructed B Meson Decay 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 2012 with categories.

We report measurements of partial branching fractions for inclusive charmless semileptonic B decays {bar B} → X{sub u}l{bar {nu}}, and the determination of the CKM matrix element.

A Measurement Of The Branching Fractions Ofexclusive Bbar To D Pi Lnu Decays In Events With A Fully Reconstructed Bmeson

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Author :
language : en
Publisher:
Release Date : 2008

A Measurement Of The Branching Fractions Ofexclusive Bbar To D Pi Lnu Decays In Events With A Fully Reconstructed Bmeson written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

The authors report a measurement of the branching fractions for {bar B} → D{sup (*)}?l−{bar ?}{sub l} decays based on 341.1 fb−1 of data collected at the ?(4S) resonance with the BABAR detector at the PEP-II e+e− storage rings. Events are tagged by fully reconstructing one of the B mesons in a hadronic decay mode. The obtain ?(B− → D°l−{bar ?}{sub l}) = (2.33 ± 0.09{sub stat.} ± 0.09{sub syst.})%, ?(B− → D*°l−{bar ?}{sub l}) = 5.83 ± 0.15{sub stat.} ± 0.30{sub syst.}%, ?({bar B}° → D+l−{bar ?}{sub l}) = (2.21 ± 0.11{sub stat.} ± 0.12{sub syst.})% ?({bar B}° → D*+l−{bar ?}{sub l}) = 5.49 ± 0.16{sub stat.} ± 0.25{sub syst.}%, ?(B− → D+?−l−{bar ?}{sub l}) = (0.42 ± 0.06{sub stat.} ± 0.03{sub syst.})%, ?(B− → D*+ ?−l−{bar ?}{sub l}) = (0.59 ± 0.05{sub stat.} ± 0.04{sub syst.})%, ?({bar B}° → D°?+l−{bar ?}{sub l}) = (0.43 ± 0.08{sub stat.} ± 0.03{sub syst.})% and ?({bar B}° → D*° ?+l−{bar ?}{sub l}) = (0.48 ± 0.08{sub stat.} ± 0.04{sub syst.})%.

An Inclusive Measurement Of The Branching Fraction For The B 602 S 222 Using The Recoil Of Fully Reconstructed B Meson Decays

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Author : Clare Louise Brown
language : en
Publisher:
Release Date : 2005

An Inclusive Measurement Of The Branching Fraction For The B 602 S 222 Using The Recoil Of Fully Reconstructed B Meson Decays written by Clare Louise Brown 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.

Measurement Of The Relative Branching Fractions For B To D D D D Pi Ell Bar Nu Ell With A Large Sample Of Tagged B Mesons

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Author : B. Aubert
language : en
Publisher:
Release Date : 2006

Measurement Of The Relative Branching Fractions For B To D D D D Pi Ell Bar Nu Ell With A Large Sample Of Tagged B Mesons written by B. Aubert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

We present a study of B semileptonic decays into charm final states based on 211.7 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. Using a novel technique based on the simultaneous fit of a set of variables reconstructed on the recoil of a B tagged in an hadronic decay mode, we measure the relative branching fractions {Lambda}(B{sup -} {yields} D{sup 0}{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.611 {+-} 0.022 (stat.) {+-} 0.027 (syst.) and {Lambda}(B{sup -} {yields} D**{sup 0})(D{sup (*)}{pi}){ell}{sup -}{bar {nu}}{sub {ell}}/{Lambda}(B{sup -} {yields} DX{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.173 {+-} 0.017 (stat.) {+-} 0.021 (syst.).

Measurement Of The Partial Branching Fraction For Inclusive Charmless Semileptonic B Decays And Extraction Of

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Author :
language : en
Publisher:
Release Date : 2005

Measurement Of The Partial Branching Fraction For Inclusive Charmless Semileptonic B Decays And Extraction 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.

Charmless semileptonic decays, {bar B} 2!X{sub u}l{bar {nu}}, are studied in a sample of 232 million B{bar B} decays recorded with the BABAR detector, in events where the decay of the second B meson is fully reconstructed. Inclusive charmless decays are selected in kinematic regions where the dominant background from semileptonic B decays to charm is reduced by requirements on the hadronic mass M{sub X} and the momentum transfer q2. The partial branching fraction for {bar B} 2!X{sub u}l{bar {nu}} decays for M{sub X} 1.7 GeV/c2 and q2 8 GeV2/c4 is measured to be [Delta][Beta]({bar b} 2!X{sub u}l{bar {nu}}) = (0.87 ± 0.09{sub stat} ± 0.09{sub sys} ± 0.01{sub th}) x 10−3. The CKM matrix element.

An Inclusive Measurement Of The Branching Fraction For The B U2192 S Using The Recoil Of Fully Reconstructed B Meson Decays

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Author : Clare Louise Brown
language : en
Publisher:
Release Date : 2005

An Inclusive Measurement Of The Branching Fraction For The B U2192 S Using The Recoil Of Fully Reconstructed B Meson Decays written by Clare Louise Brown 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.

Crippen Wedi Ei Gondemnio I Farw Am Lofruddio A Darnio Ei Wraig A I Chladdu Yn Seler Ei Dy

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Author :
language : en
Publisher:
Release Date : 18??

Crippen Wedi Ei Gondemnio I Farw Am Lofruddio A Darnio Ei Wraig A I Chladdu Yn Seler Ei Dy written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 18?? with Capital punishment categories.

An Inclusive Measurement Of The Branching Fraction For The B U2192 S Using The Recoil Of Fully Reconstructed B Meson Decays

DOWNLOAD
Author : Clare Louise Brown
language : en
Publisher:
Release Date : 2005

An Inclusive Measurement Of The Branching Fraction For The B U2192 S Using The Recoil Of Fully Reconstructed B Meson Decays written by Clare Louise Brown 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.