Measurement Of The B C Meson Lifetime Using B C U2192 J L X Decays

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Measurement Of The B C Meson Lifetime Using B C U2192 J L X Decays

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Author :
language : en
Publisher:
Release Date : 2008

Measurement Of The B C Meson Lifetime Using B C U2192 J L X Decays 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 average proper decay time of the B±c mesons, the ground state of bottom and charm quark bound states. The lifetime measurement is carried out in the decay modes B±c → J/? + e± + X and B±c → J/? + ?± + X, where the J/? decays as J/? → ?+?- and the X are unmeasured particles such as ve or v?. The data are collect by the CDF II detector which measures the properties of particles created in √s = 1.96 TeV p$ar{p}$ collisions delivered by the Fermilab Tevatron. This measurement uses ̃1 fb-1 of integrated luminosity. The measured average proper decay time of B±c mesons, ? = 0.475-0.049+0.053(stat.) ± 0.018(syst.) ps, is competitive with the most precise measurements in the world and confirms previous measurements and theoretical predictions.

Measurement Of The B C Meson Lifetime Using B C J Psi Mu Nu Mu Chi Decays With The Lhcb Detector At Cern

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Author : Lucio Anderlini
language : en
Publisher:
Release Date : 2015

Measurement Of The B C Meson Lifetime Using B C J Psi Mu Nu Mu Chi Decays With The Lhcb Detector At Cern written by Lucio Anderlini and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

Measurement Of The B C Pm Meson Lifetime Using B C Pm To J Psi Pi Pm Decays

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Author :
language : en
Publisher:
Release Date : 2013

Measurement Of The B C Pm Meson Lifetime Using B C Pm To J Psi Pi Pm Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

This thesis describes a measurement of the lifetime of the B± c meson in an exclusive decay channel B± c 2!J/ [psi] [pi]±, where the J/[psi] decays as J/[psi] 2![mu]+[mu]- The measurement uses a data sample with an integrated luminosity of 6.7 fb-1 collected at CDF. This is the first measurement of the B± c meson lifetime in a hadronic channel and the measured lifetime, [tau] = 0.449 +0.054 -0.048(stat:) ± 0.019(syst:) ps, is in good agreement with previous results obtained from semileptonic decay channel and confirms previous measurements and theoretical predictions.

Measurement Of The B C Meson Lifetime Using B C2 J Psi L X Decays

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Author :
language : en
Publisher:
Release Date : 2008

Measurement Of The B C Meson Lifetime Using B C2 J Psi L X Decays 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 average proper decay time of the B±c mesons, the ground state of bottom and charm quark bound states. The lifetime measurement is carried out in the decay modes B±c → J/[Psi] + e± + X and B±c → J/[Psi] + [mu]± + X, where the J/[Psi] decays as J/[Psi] → [mu]+[mu]- and the X are unmeasured particles such as ve or v[mu]. The data are collect by the CDF II detector which measures the properties of particles created in √s = 1.96 TeV p$\bar{p}$ collisions delivered by the Fermilab Tevatron. This measurement uses ~ 1 fb-1 of integrated luminosity. The measured average proper decay time of B±c mesons, [tau] = 0.475-0.049+0.053(stat.) ± 0.018(syst.) ps, is competitive with the most precise measurements in the world and confirms previous measurements and theoretical predictions.

Measurement Of The Lifetime Difference And Cp Violating Phase In Bs U2192 J Decays

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Lifetime Difference And Cp Violating Phase In Bs U2192 J Decays 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.

Over the past decades the current theoretical description, the Standard Model of elementary particle physics, was solidified by many measurements as the basic theory describing fundamental particles and their interactions. It is extremely successful in explaining the high-precision data collected by experiments so far. The Standard Model includes several intrinsic parameters which have to be measured in experiments. Independent analyses of different physical processes can constrain those parameters. By combining those measurements physicists might be sensitive to physics beyond the Standard Model. If they are inconsistent it allows to get a hint on the theory that might supersede the Standard Model. The goal of the analysis presented in this thesis is to measure some of these parameters in the Bs meson system. The Bs meson, consisting of an anti-b and s quark, is not a pure mass eigenstate, thus allowing a Bs meson to oscillate into its antiparticle via weak interacting processes. This is a general feature of any neutral meson. The history of meson mixing measurements is more then 50 years old. It was first observed in the kaon system. The oscillation in the Bd system was measured very precisely by the B factories, whereas the oscillation frequency of the Bs was measured with more than 5? significance last year by CDF and first evidence for mixing in the D0 system was presented only this year.

A Measurement Of The Neutral B Meson Lifetime Using Partially Reconstructed B0 D Pi Decays

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Author :
language : en
Publisher:
Release Date : 2002

A Measurement Of The Neutral B Meson Lifetime Using Partially Reconstructed B0 D Pi Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.

The neutral B meson lifetime has been measured with the data collected by the BABAR detector at the PEP-II storage ring during the year 2000 for a total integrated luminosity of 20.3 fb[sup -1]. The B[sup 0][yields] D*[sup -][pi][sup+] decays have been selected with a partial reconstruction method in which only the fast pion from the B[sup 0] decay and the slow pion from D*[sup -][yields][bar D][sup 0][pi][sup -] are reconstructed. The B[sup 0] lifetime has been measured to be 1.510[+-] 0.040[+-] 0.038 ps with a sample of 6971[+-] 241 reconstructed signal events.

Measurement Of Neutral B Meson And Charged B Meson Lifetimes Using Semileptonic Decays At Cdf

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Author : David K. Clark
language : en
Publisher:
Release Date : 2010

Measurement Of Neutral B Meson And Charged B Meson Lifetimes Using Semileptonic Decays At Cdf written by David K. Clark and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Lepton-hadron interactions categories.

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.

The Lifetime Of A Beautiful And Charming Meson

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Author :
language : en
Publisher:
Release Date : 2008

The Lifetime Of A Beautiful And Charming 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.

Using approximately 1.3 fb-1 of data collected by the D0 detector between 2002 and 2006, the lifetime of the Bc± meson is studied in the Bc± → J/??± + X final state. Using an unbinned likelihood simultaneous fit to J/? + ? invariant mass and lifetime distributions, a signal of 810 ± 80(stat.) candidates is estimated and a lifetime measurement made of: ?(Bc±) = 0.448-0.036+0.038(stat) ± 0.032(sys) ps.

Wen Lin Man Bu

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language : en
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Wen Lin Man Bu written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.