Search For Cpt Violation With The Focus Experiment And Measurement Of Lambda B Lifetime In The Decay Lambda B J

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Search For Cpt Violation With The Focus Experiment And Measurement Of Lambda B Lifetime In The Decay Lambda B J

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Author :
language : en
Publisher:
Release Date : 2005

Search For Cpt Violation With The Focus Experiment And Measurement Of Lambda B Lifetime In The Decay Lambda B J 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.

This dissertation describes two different projects from two different experiments. We have performed a search for CPT violation in neutral charm meson oscillations using data from the FOCUS Experiment. While flavor mixing in the charm sector is predicted to be small in the Standard Model, it is still possible to investigate CPT violation through a study of the proper time dependence of a CPT asymmetry in right-sign decay rates for D[sup 0] [yields] K[sup -][pi][sup +] and [bar D][sup 0] [yields] K[sup +][pi][sup -]. This asymmetry is related to the CPT violating complex parameter [xi] and the mixing parameters x and y: A[sub CPT] [proportional-to] Re[xi]y - Im[xi]x. We determine a 95% confidence level limit of -0.0068

Search For Cpt Violation With The Focus Experiment And Measurement Of Lambda B Lifetime In The Decay Lambda B J

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Author : Abaz Kryemadhi
language : en
Publisher:
Release Date : 2004

Search For Cpt Violation With The Focus Experiment And Measurement Of Lambda B Lifetime In The Decay Lambda B J written by Abaz Kryemadhi 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.

This dissertation describes two different projects from two different experiments. We have performed a search for CPT violation in neutral charm meson oscillations using data from the FOCUS Experiment. While flavor mixing in the charm sector is predicted to be small in the Standard Model, it is still possible to investigate CPT violation through a study of the proper time dependence of a CPT asymmetry in right-sign decay rates for D{sup 0} {yields} K{sup -} {pi}{sup +} and {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}. This asymmetry is related to the CPT violating complex parameter {xi} and the mixing parameters x and y: A{sub CPT} {infinity} Re{xi}y - Im{xi}x. We determine a 95% confidence level limit of -0.0068

Search For Cpt Violation With The Focus Experiment And Measurement Of Lambdab Lifetime In The Decay Lambdab Jpsi Lambda With The D Experiment

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Author : Abaz Kryemadhi
language : en
Publisher:
Release Date : 2004

Search For Cpt Violation With The Focus Experiment And Measurement Of Lambdab Lifetime In The Decay Lambdab Jpsi Lambda With The D Experiment written by Abaz Kryemadhi 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.

Search For Cpt Violation With The Focus Experiment And Measurement Of Subb

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Author :
language : en
Publisher:
Release Date : 2004

Search For Cpt Violation With The Focus Experiment And Measurement Of Subb 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.

This dissertation describes two different projects from two different experiments. We have performed a search for CPT violation in neutral charm meson oscillations using data from the FOCUS Experiment. While flavor mixing in the charm sector is predicted to be small in the Standard Model, it is still possible to investigate CPT violation through a study of the proper time dependence of a CPT asymmetry in right-sign decay rates for D0 → K- ?+ and $ar{D}$0 → K+?-. This asymmetry is related to the CPT violating complex parameter ? and the mixing parameters x and y: ACPT ∞ Re?y - Im?x. We determine a 95% confidence level limit of -0.0068 Re?y - Im?x 0.0234. Within the framework of the Standard Model Extension incorporating general CPT violation, we also find 95% confidence level limits for the expressions involving coefficients of Lorentz violation of (-2.8 N(x,y,?))(?asub0/sub + 0.6 ?asubZ/sub 4.8) x 10sup-16/sup GeV, (-7.0 N(x,y,?)?asubx/sub 3.8) x 10

Measurement Of The Lambda B Lifetime In The Exclusive Decay Lambda B J

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Lambda B Lifetime In The Exclusive Decay Lambda B J 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 have measured the?{sub b} lifetime using the exclusive decay?{sub b}→J/??, based on 1.2 fb−1 of data collected with the D0 detector during 2002-2006. From 171 reconstructed?{sub b} decays, where the J/? and? are identified via the decays J/??????????− and????????p?, we measured the?{sub b} lifetime to be?(?{sub b})=1.218{sub -0.115}{sup +0.130}(stat)±0.042(syst) ps. We also measured the B° lifetime in the decay B°→J/?(?+?−)K{sub S}°(?+?−) to be?(B°)=1.501{sub -0.074}{sup +0.078}(stat)±0.050(syst) ps, yielding a lifetime ratio of?(?{sub b})/?(B°)=0.811{sub -0.087}{sup +0.096}(stat)±0.034(syst =).

Time Dependent Cp Violation Measurements

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Author : Markus Röhrken
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-10-17

Time Dependent Cp Violation Measurements written by Markus Röhrken 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 2013-10-17 with Science categories.

This thesis describes a high-quality, high-precision method for the data analysis of an interesting elementary particle reaction. The data was collected at the Japanese B-meson factory KEKB with the Belle detector, one of the most successful large-scale experiments worldwide. CP violation is a subtle quantum effect that makes the world look different when simultaneously left and right and matter and antimatter are exchanged. This being a prerequisite for our own world to have developed from the big bang, there are only a few experimental indications of such effects, and their detection requires very intricate techniques. The discovery of CP violation in B meson decays garnered Kobayashi and Maskawa, who had predicted these findings as early as 1973, the 2008 Nobel prize in physics. This thesis describes in great detail what are by far the best measurements of branching ratios and CP violation parameters in two special reactions with two charm mesons in the final state. It presents an in-depth but accessible overview of the theory, phenomenology, experimental setup, data collection, Monte Carlo simulations, (blind) statistical data analysis, and systematic uncertainty studies.

Measurement Of The Lambda Subscript B Lifetime In The Decay Mode Lambda Subscript B Right Arrow J Psi Lambda

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Author : Robyn Madrak
language : en
Publisher:
Release Date : 2003

Measurement Of The Lambda Subscript B Lifetime In The Decay Mode Lambda Subscript B Right Arrow J Psi Lambda written by Robyn Madrak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Mesons categories.

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime Epsilon Via The Four K Yields 2 Pi Decay Modes Task J

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Author :
language : en
Publisher:
Release Date : 1993

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime Epsilon Via The Four K Yields 2 Pi Decay Modes Task J written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

Fermilab experiments E731, E773, E799, and E832 are a series of experiments to investigate the physics of CP violation, CPT violation, and rare decays of the neutral kaon system. E731 finished data taking in 1988, during past year the full data set analysis was completed and yielded ([var epsilon][prime]/[var epsilon])[sub 2[pi]]=(7.4 [plus minus] 5.2 [stat] [plus minus] 2.9 [syst]) [times] 10[sup [minus]4] . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining ([Delta][phi])[sub 2[pi]] with an accuracy of about 0.5[sup 0]. Data were taken during the last Fermilab Fixed Target run period between September and November 1991. It is anticipated the data analysis will be finished within a year. E799, with the primary goal of observing direct Cp Violation via searching for the rare decay K[sub L][yields] [pi][sup 0] l [sup +]l[sup [minus]] (where l = e, [mu] [nu]) took test data between November 1991 and January 1992 (Phase 1). Some preliminary results are shown here. E799 (Phase II) and E832 (a follow up experiment of E731) are scheduled to take data after the current Fermilab collider run with a new facility and detector.

Measurement Of The Lambda B 0 Lifetime Using Semileptonic Decays

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Lambda B 0 Lifetime Using Semileptonic 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.

Cp Violation

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Author : L. Wolfenstein
language : en
Publisher: Elsevier
Release Date : 2012-12-02

Cp Violation written by L. Wolfenstein and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.

The articles collected in this volume are mainly concerned with the phenomenological description of the 1964 discovery on K° decay that CP invariance was violated in nature. The variety of models developed to explain this CP violation are described together with reprints of more recent definitive experiments, and CP violation in the B° system and the electric dipole moment of the neutron is also covered.