Measurement Of The Cp Violation Parameter Sin 2 Beta In B 2 Psi K Sub S Decays

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Measurement Of The Cp Violation Parameter Sin 2 Beta In B 2 Psi K Sub S Decays

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Author :
language : en
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Release Date : 1999

Measurement Of The Cp Violation Parameter Sin 2 Beta In B 2 Psi K Sub S 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 1999 with categories.

Measurement Of The Cp Violation Parameter Sin 2 Beta In B Sup 0 R Arrow J Psi K Sub S Sup 0 Decays

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language : en
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Release Date : 2001

Measurement Of The Cp Violation Parameter Sin 2 Beta In B Sup 0 R Arrow J Psi K Sub S Sup 0 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 2001 with categories.

A sample of[approximately] 400 B[sub d][sup 0]/[bar B][sub d][sup 0][r-arrow] J/[psi]K[sub s][sup 0] decays collected in[bar p]p collisions by the CDF detector is used to directly measure the CP-violation parameter sin (2[beta]). They find sin(2[beta])= 0.79[sub[minus]0.44][sup+ 0.41], favoring the standard model expectation of a large CP violation in this B[sup 0] decay mode.

Measurements Of The Cp Violation Parameter Sin 2 Beta In B Superscipt 0 Right Arrow J Psi K 0 Over S Decays

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language : en
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Release Date : 2000

Measurements Of The Cp Violation Parameter Sin 2 Beta In B Superscipt 0 Right Arrow J Psi K 0 Over S 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 2000 with categories.

In the 110 pb[sup -1] Run I data sample, using three complementary flavor-tagging algorithms CDF has made a new measurement of the CP-violating asymmetry sin(2[beta])=0.79[sup +0.41][sub -0.44], This corresponds to the limit sin(2[beta])>-0.08 at 95% confidence level. This result agrees well with predictions from indirect constraints based on fits of elements of the CKM matrix.

Government Reports Announcements Index

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language : en
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Release Date : 1996-08

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-08 with Science categories.

Measurement Of The Cp Violation Parameter Sin 2 Beta

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Author :
language : en
Publisher:
Release Date : 1999

Measurement Of The Cp Violation Parameter Sin 2 Beta written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.

This thesis presents a measurement of the time-dependent asymmetry in the rate of {anti B}{sub d}° versus B{sub d}° decays to J/[psi]K{sub s}°. In the context of the Standard Model this is interpreted as a measurement of the CP violation parameter sin(2[beta]). A total of 198±17 B{sub d}°/{anti B}{sub d}° decays were observed in p{anti p} collisions at √s=1.8 TeV by the CDF detector at the Fermilab Tevatron. The initial B flavor (whether B° or {anti B}°) is determined by a same-side flavor tagging technique. The analysis results in sin(2[beta])=1.8±1.1(stat.)±0.3(syst.). This analysis demonstrates the feasibility of studying CP violation in the B°-{anti B}° system at a hadron collider. By applying the methods used in this analysis, future, higher-statistics experiments should be able to tightly constrain the parameters of the Standard Model.

High Energy Physics Index

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language : en
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Release Date : 1994

High Energy Physics Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Particles (Nuclear physics) categories.

Measurement Of Sin2 Beta From J Psi K Sub S Decays

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language : en
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Release Date : 2001

Measurement Of Sin2 Beta From J Psi K Sub S 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 2001 with categories.

The CP-violating parameter sin 2[beta] is directly measured using 110 pb[sup[minus]1] of data accumulated with the CDF detector at the Fermilab[anti p]p Tevatron collider operating at[radical]s= 1.8 TeV. The signal consists of 395[+-] 31 B[sub d][sup 0][r[underscore]arrow] J/[psi] K[sub s] events. Three tagging methods are used to identify the type of B meson at production (B[sub d][sup 0] or[anti B][sub d][sup 0]). From the CP asymmetry, sin 2[beta] is measured to be 0.79[sub[minus]0.44][sup+0.41], consistent with Standard Model predictions. Sin 2[beta] is in the interval 0[lt] sin2[beta][lt] 1 at the 93% confidence level.

Measurement Of Cp Violation Parameters In B Quark Decays To Charm Anticharm Down Quarks Exclusive Decays At The Babar Experiment

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language : en
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Release Date : 2003

Measurement Of Cp Violation Parameters In B Quark Decays To Charm Anticharm Down Quarks Exclusive Decays At 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 2003 with categories.

The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B° 2!D*D*− and B° 2!D*{sup ±}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2[beta] outside of decays containing charmonium. It provides a comparison to measurements of sin2[beta] using b 2!c{bar c}s, and permits an observation into potential new physics sources of CP violation, such as supersymmetry, via differences between these measurements and those of B° 2!J/[psi] K{sub S}° as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 ± 0.88(stat) ± 0.12(syst) and C = -0.30 ± 0.50(stat) ± 0.13(syst) for B° 2!D*− D; S = -0.43 ± 1.41(stat) ± 0.23(syst) and C = 0.53 ± 0.74(stat) ± 0.15(syst) for B° 2!D*+ D−; and S = -0.05 ± 0.45(stat) ± 0.05(syst) and C = 0.12 ± 0.30(stat) {+-} 0.05(syst) for B° 2!D*− D+; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.

Inis Atomindeks

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language : en
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Release Date : 1986

Inis Atomindeks written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Nuclear energy categories.

Measurement Of The Cp Asymmetry Parameter Sin 2 Beta At Cdf

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language : en
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Release Date : 2000

Measurement Of The Cp Asymmetry Parameter Sin 2 Beta 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 2000 with categories.

We present a measurement of the time-dependent asymmetry in the rate for [anti]B[sup 0][sub d] versus B[sup 0][sub d] decays to J/[psi] K[sup 0][sub S] . In the context of the Standard Model this is interpreted as a measurement of the CP-violation parameter sin(2[beta]). A total of 198 [+-] 17 B[sup 0][sub d]/[anti B][sup 0][sub d] decays were observed in p[anti p] collisions at ps = 1:8 TeV by the CDF detector at the Fermilab Tevatron. The initial b-flavor is determined by a same side avor tagging technique. Our analysis results in sin(2[beta]) = 1:8 [+-] 1:1(stat) [+-] 0:3(syst).