Measurement Of The Branching Fraction Bs Ds Ds Using The D0 Detector At Fermilab

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Measurement Of The Branching Fraction Bs Ds Ds Using The D0 Detector At Fermilab

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Author :
language : en
Publisher:
Release Date : 2009

Measurement Of The Branching Fraction Bs Ds Ds Using The D0 Detector At Fermilab written by 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.

This thesis describes a measurement of the branching fraction Br(B°{sub s} → D{sup (*)}{sub s} D{sup (*)}{sub s}) made using a data sample collected from proton-antiproton collisions at a centre-of-mass energy of 1.96 TeV, corresponding to approximately 1.3 fb−1 of integrated luminosity collected in 2002--2006 by the D0 detector at the Fermilab Tevatron Collider. One D{sup (*)}{sub s} meson was partially reconstructed in the decay D{sub s} → [phi][mu][nu], and the other D{sup (*)}{sub s} meson was identified using the decay D{sub s} → [phi][pi] where no attempt was made to distinguish D{sub s} and D{sup *}{sub s} states. The resulting measurement is Br(B°{sub s} → D{sup (*)}{sub s} D{sup (*)}{sub s}) = 0.039{sup +0.019}{sub -0.017}(stat){sup +0.016}{sub -0.015}(syst). This was subsequently used to estimate the width difference [Delta][Gamma]{sup CP}{sub s} in the B°{sub s}-{anti B}°{sub s} system: [Delta][Gamma]{sup CP}{sub s}/[Gamma]{sub s} = 0.079{sup +0.038}{sub -0.035}(stat){sup +0.031}{sub 0.030}(syst), and is currently one of the most precise estimates of this quantity and consistent with the Standard Model.

High Energy Physics

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Author :
language : en
Publisher: World Scientific
Release Date : 1981

High Energy Physics written by and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.

Hadron Collider Physics 2005

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Author : Mario Campanelli
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-06-26

Hadron Collider Physics 2005 written by Mario Campanelli and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-06-26 with Science categories.

This book gathers the proceedings of The Hadron Collider Physics Symposia (HCP) 2005, and reviews the state-of-the-art in the key physics directions of experimental hadron collider research. Topics include QCD physics, precision electroweak physics, c-, b-, and t-quark physics, physics beyond the Standard Model, and heavy ion physics. The present volume serves as a reference for everyone working in the field of accelerator-based high-energy physics.

Measurement Of The Branching Fraction Br B0s U2192 Ds Ds Using The D0 Detector At Fermilab

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Author :
language : en
Publisher:
Release Date : 2008

Measurement Of The Branching Fraction Br B0s U2192 Ds Ds Using The D0 Detector At Fermilab 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.

This thesis describes a measurement of the branching fraction Br (B0s → Ds*Ds*) made using a data sample collected from proton-antiproton collisions at a centre-of-mass energy of 1.96 TeV, corresponding to approximately 1.3 fb-1 of integrated luminosity collected in 2002--2006 by the D0 detector at the Fermilab Tevatron Collider. One D*s meson was partially reconstructed in the decay Ds → ??v, and the other D*s meson was identified using the decay Ds → ?? where no attempt was made to distinguish Ds and D*s states. The resulting measurement is Br (B0s → Ds*Ds*) = 0.039+0.019-0.017(stat) +0.016-0.015(syst). This was subsequently used to estimate the width difference ??CPs in the B0s-$ar{B}$0s system: ??CPs/?s = 0.079+0.038-0.035(stat)+0.031-0.030(syst), and is currently one of the most precise estimates of this quantity and consistent with the Standard Model.

Measurement Of The Branching Fraction Br Bos Ds Using The Do Detector At Fermilab

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Author : James William Walder
language : en
Publisher:
Release Date : 2008

Measurement Of The Branching Fraction Br Bos Ds Using The Do Detector At Fermilab written by James William Walder 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.

Measurement Of The Ratios Of Branching Fractions B Bs Ds Pi Pi Pi

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Author :
language : en
Publisher:
Release Date : 2006

Measurement Of The Ratios Of Branching Fractions B Bs Ds Pi Pi Pi written by 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.

Using 355 pb−1 of data collected by the CDF II detector in p{bar p} collisions at √s = 1.96 TeV at the Fermilab Tevatron, they study the fully reconstructed hadronic decays B{sub (s)}° → D{sub (s)}−? and B{sub (s)}° → D{sub (s)}−?+?+?−. They present the first measurement of the ratio of branching fractions?(B{sub s}° → D{sub s}−?+?+?−)/?(B° → D−?+?+?−) = 1.05 ± 0.10(stat.) ± 0.22(syst.). They also update their measurement of?(B{sub s}° → D{sub s}−?+)/?(B° → D−?+) to 1.13 ± 0.08(stat.) ± 0.23(syst.) improving the statistical uncertainty by more than a factor of two. They find?(B{sub s}° → D{sub s}−?+) = [3.8 ± 0.3(stat.) ± 1.3(syst.)] x 10−3 and?(B{sub s}° → D{sub s}−?+?+?−) = [8.4 ± 0.8(stat.) ± 3.2(syst.)] x 10−3.

Measurement Of The Ratio Of Branching Fractions B D0 K Pi

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Author :
language : en
Publisher:
Release Date : 2006

Measurement Of The Ratio Of Branching Fractions B D0 K Pi written by 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.

The authors present a measurement of R{sub B}, the ratio of the branching fraction for the rare decay D° → K?− to that for the Cabibbo-favored decay D° → K−?+. Charge conjugate decays are implicitly included. A signal of 2005 ± 104 events for the decay D° → K+?− is obtained using the CDF II detector at the Fermilab Tevatron collider. The data set corresponds to an integrated luminosity of 0.35 fb−1 produced in {bar p}p collisions at √s = 1.96 TeV. Assuming no mixing, they find R{sub B} = [4.05 ± 0.21(stat) ± 0.11(syst)] x 10−3. This measurement is consistent with the world average, and comparable in accuracy with the best measurements from other experiments.

A Measurement Of The Relative Branching Ratio Br B D0 K Br B D0 Pi In Three D0 Decay Modes

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Author : Hung-Chung Fang
language : en
Publisher:
Release Date : 2011

A Measurement Of The Relative Branching Ratio Br B D0 K Br B D0 Pi In Three D0 Decay Modes written by Hung-Chung Fang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Using 1.3 fb-̂1 of data from p-pbar collisions at sqrt{s}=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we have measured the relative branching ratio BR(B-̂ -> D0̂ K-̂)/BR(B-̂ -> D0̂ pi-̂) and its charge conjugate in the D0̂ flavor decay mode D0̂_f -> K-̂pi+̂ and the CP-even decay modes D0̂ -> K-̂K+̂ and D0̂ -> pi-̂pi+̂. From these measurements, we derive: R = (7.99 +- 0.33(stat.) +- 0.38(sys.)) %, R_{CP+} = 1.15 +- 0.17(stat.) +- 0.02(sys.), A_{CP+} = 0.10 +- 0.15(stat.) +- 0.02(sys.). These values are consistent with Standard Model expectations.

Measurement Of The Branching Fraction Mathcal B Lambda0 B Rightarrow Lambda C Pi Pi Pi At Cdf

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Author :
language : en
Publisher:
Release Date : 2011

Measurement Of The Branching Fraction Mathcal B Lambda0 B Rightarrow Lambda C Pi Pi Pi At Cdf written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

We report an analysis of the?{sub b}° →?{sub c}?−?+?− decay in a data sample collected by the CDF II detector at the Fermilab Tevatron corresponding to 2.4 fb−1 of integrated luminosity. We reconstruct the currently largest samples of the decay modes?{sub b}° →?{sub c}(2595)+?− (with?{sub c}(2595)+ →?{sub c}+?+?−),?{sub b}° →?{sub c}(2625)+?− (with?{sub c}(2625)+ →?{sub c}+?+?−),?{sub b}° →?{sub c}(2455){sup ++}?−?− (with?{sub c}(2455){sup ++} →?{sub c}+?+), and?{sub b}° →?{sub c}(2455)0?+?− (with?{sub c}(2455)0 →?{sub c}+?−) and measure the branching fractions relative to the?{sub b}° →?{sub c}+?− branching fraction. We measure the ratio?(?{sub b}° →?{sub c}+?−?+?−)/?(?{sub b}° →?{sub c}+?−)=3.04 ± 0.33(stat){sub -0.55}{sup +0.70}(syst) which is used to derive?(?{sub b}° →?{sub c}+?−?+?−)=(26.8{sub -11.2}{sup +11.9}) x 10−3.

Measurement Of The Branching Fraction For B D0 K

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Author :
language : en
Publisher:
Release Date : 2003

Measurement Of The Branching Fraction For B D0 K 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.

The authors present a measurement of the branching fraction for the decay B− → D° K{sup *-} using a sample of approximately 86 million B{bar B} pairs collected by the BABAR detector from ee− collisions near the?(4S) resonance. The D° is detected through its decays to K−?+, K−?+?° and K−?+?−?+, and the K{sup *-} through its decay to K{sub S}°?−. They measure the branching fraction to be?(B− → D°K{sup *-}) = (6.3 ± 0.7(stat.)±0.5(syst.)) x 10−4.