Measurements Of Branching Fraction Polarization And Direct Cp Violating Asymmetry In B Sup K Sup 0 Rho Sup Decays

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Measurements Of Branching Fraction Polarization And Direct Cp Violating Asymmetry In B Sup K Sup 0 Rho Sup Decays

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Author :
language : en
Publisher:
Release Date : 2004

Measurements Of Branching Fraction Polarization And Direct Cp Violating Asymmetry In B Sup K Sup 0 Rho Sup 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 2004 with categories.

The purpose of this analysis is the simultaneous measurement of the branching fraction, the longitudinal-polarization component, and the direct-CP-violating charge asymmetry for the B --> vector-vector decay mode B[sup +] --> K*[sup 0][rho][sup +], which has previously not been seen experimentally. The measurement of the polarization of the penguin decay is of special interest. There is no tree contribution to the decay amplitude and only a very small annihilation process. The polarization of the B[sup +] --> K*[sup 0][rho][sup +] decay mode can be compared to that already measured for the similar penguin decay B --> K*[phi].

Government Reports Annual Index

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Author :
language : en
Publisher:
Release Date : 1992

Government Reports Annual 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 1992 with Government reports announcements & index categories.

Measurements Of Branching Fractions Polarizations And Direct Cp Violation Asymmetries In B To Rho K And B To F0 980 K Decays

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

Measurements Of Branching Fractions Polarizations And Direct Cp Violation Asymmetries In B To Rho K And B To F0 980 K Decays 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.

The authors report searches for B-meson decays to the charmless final states {rho}K* and f{sub 0}(980)K* with a sample of 232 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at SLAC.

Inis Atomindex

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language : en
Publisher:
Release Date : 1984

Inis Atomindex written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Nuclear energy categories.

Measurement Of Branching Fractions And Cp Violating Asymmetries In B Rho H

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language : en
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Release Date : 2003

Measurement Of Branching Fractions And Cp Violating Asymmetries In B Rho H 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.

We present measurements of branching fractions and CP-violating asymmetries in B[sup 0][yields][rho][sup[+-]][pi][sup[-+]] and B[sup 0][yields][rho][sup -]K[sup+] decays. The results are obtained from a data sample of 88.9 x 10[sup 6][Upsilon](4S)[yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-dependent maximum likelihood fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][rho][sup[+-]][pi][sup[-+]])= (22.6[+-] 1.8 (stat)[+-] 2.2 (syst)) x 10[sup -6] and[Beta](B[sup 0][yields][rho][sup -]K[sup+])= (7.3[sub -1.2][sup+1.3][+-] 1.3) x 10[sup -6]; and the CP-violating charge asymmetries A[sub CP][sup[rho][pi]]= -0.18[+-] 0.08[+-] 0.03 and A[sub CP][sup[rho]K]= 0.28[+-] 0.17[+-] 0.08; the direct CP violation parameter C[sub[rho][pi]]= 0.36[+-] 0.18[+-] 0.04 and the mixing-induced CP violation parameter S[sub[rho][pi]]= 0.19[+-] 0.24[+-] 0.03; and the dilution parameters[Delta]C[sub[rho][pi]]= 0.28[sub -0.19][sup+0.18][+-] 0.04 and[Delta]S[sub[rho][pi]]= 0.15[+-] 0.25[+-] 0.03.

Branching Fraction And Direct Cp Violating Asymmetries In Charmless Twobody B Decays At Babar

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Author : W. D. Hulsbergen
language : en
Publisher:
Release Date : 2005

Branching Fraction And Direct Cp Violating Asymmetries In Charmless Twobody B Decays At Babar written by W. D. Hulsbergen 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.

We present preliminary measurements of branching fractions and direct CP violating asymmetries in charmless two-body B decays, obtained with the BABAR detector using a sample of 227M {Upsilon}(4S) {yields} B{bar B} decays. We report the first observation of B{sup 0} {yields} K{sup 0}{bar K}{sup 0} and the first observation of direct CP violation in B{sup 0} {yields} K{sup +}{pi}{sup -} decays.

Rates Polarizations And Asymmetries In Charmless Vector Vector B Decays

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language : en
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Release Date : 2004

Rates Polarizations And Asymmetries In Charmless Vector Vector B 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 2004 with categories.

With a sample of approximately 89 million B[bar B] pairs collected with the BABAR detector, they measure branching fractions, determine the degree of longitudinal polarization, and search for direct CP violation in the decays B[sup 0][yields][phi]K*[sup 0] and B[sup+][yields][phi]K*[sup+]. They perform a search for other charmless vector-vector B decays involving[rho] and K*(892) resonances and observe the decays B[sup+][yields][rho][sup 0] K*[sup+] and B[sup+][yields][rho][sup 0][rho][sup+]. The branching fractions are measured to be[Beta]([phi]K*[sup 0])= (11.1[sub -1.2][sup+1.3][+-] 1.1) x 10[sup -6], [Beta]([phi]K*[sup+])= (12.1[sub -1.9][sup+2.1][+-] 1.5) x 10[sup -6], [Beta]([rho][sup 0] K*[sup+])= (7.7[sub -2.0][sup+2.1][+-] 1.4) x 10[sup -6], and[Beta]([rho][sup 0][rho][sup+])= (9.9[sub -2.5][sup+2.6][+-] 2.5) x 10[sup -6]. The longitudinal polarization fractions are measured to be[Lambda][sub L]/[Lambda]([phi]K*[sup 0])= 0.65[+-] 0.07[+-] 0.04 and[Lambda][sub L]/[Lambda]([phi]K*[sup+])= 0.46[+-] 0.12[+-] 0.05. They measure the charge asymmetries:[Alpha][sub CP]([phi]K*[sup 0])=+0.04[+-] 0.12[+-] 0.02 and[Alpha][sub CP]([phi]K*[sup+])=+0.16[+-] 0.17[+-] 0.04.

Measurements Of Branching Fraction Ratios And Cp Asymmetries In Suppressed B 2 D 2 K Pi K And B 2 D 2 K Pi Pi Decays

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language : en
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Release Date : 2011

Measurements Of Branching Fraction Ratios And Cp Asymmetries In Suppressed B 2 D 2 K Pi K And B 2 D 2 K Pi 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 2011 with categories.

We report the first reconstruction in hadron collisions of the suppressed decays B-2!D(2!K+[pi]- )K- and B-2!D(2!K+[pi]- )[pi]- decays, sensitive to the CKM phase [gamma], using data from 7 fb-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B-2!D(2!K+[pi]- )K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 " 8.6(stat) " 2.6(syst)] x 10-3, R+(K) = [42.6 " 13.7(stat) " 2.8(syst)] x 10-3, R-(K) = [3.8 " 10.3(stat) " 2.7(syst)] x 10-3 as well as the direct CP-violating asymmetry A(K) = -0.82"0.44(stat)"0.09(syst) of this mode. Corresponding quantities for B- 2!D(2!K+[pi]- )[pi]- decay are also reported.

Measurements Of Branching Fractions In B Yields Phi K And B Yields Phi Pi And Search For Direct Cp Violation In B Sup Yields Phi K Sup

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Author :
language : en
Publisher:
Release Date : 2003

Measurements Of Branching Fractions In B Yields Phi K And B Yields Phi Pi And Search For Direct Cp Violation In B Sup Yields Phi K Sup 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 measurements of branching fractions in the b[yields] s[bar s]s penguin-dominated decays B[sup+][yields][phi]K[sup+] and B[sup 0][yields][phi]K[sup 0] in a sample of approximately 89 million B[bar B] pairs collected by the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. They determine[Beta](B[sup+][yields][phi]K[sup+])= (10.0[sub -0.8][sup+0.9][+-] 0.5) x 10[sup -6] and[Beta](B[sup 0][yields][phi]K[sup 0])= (8.4[sub -1.3][sup+1.5][+-] 0.5) x 10[sup -6]. Additionally, they measure the CP-violating charge asymmetry[Alpha][sub CP](B[sup[+-]][yields][phi]K[sup[+-]])= 0.04[+-] 0.09[+-] 0.01, with a 90% confidence-level interval of[-0.10, 0.18], and set an upper limit on the CKM- and color-suppressed decay B[sup+][yields][phi][pi][sup+], [Beta](B[sup+][yields][phi][pi][sup+])

Rare B Decays And Direct Cp Violation At Babar

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language : en
Publisher:
Release Date : 2003

Rare B Decays And Direct Cp Violation At Babar 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 search for rare B decays and direct CF violation at BABAR is described. The following measurements (based on integrated luminosities ranging from 56.4 to 81.9 fb[sup -1]) are summarized: the inclusive branching fractions and direct CF asymmetries of B[sup+][yields] h[sup+]h[sup -]H[sup+] (h=[pi], K), the exclusive branching fractions of B[sup+][yields] K[sup+][pi][sup -][pi][sup+] (where significant signals are observed in the B[sup+][yields] K*[sup 0](892)[pi][sup+], B[sup+][yields] f[sub 0](98)K[sup+], B[sup+][yields][chi][sub c0]K[sup+], B[sup+][yields][bar D][sup 0][pi][sup+] and B[sup+][yields] higher K*[sup 0][pi][sup+] channels), the branching fractions of B[sup+][yields][rho][sup 0][rho][sup+] and B[sup+][yields][rho][sup 0] K*[sup+], and finally, the branching fractions, the longitudinal components, and the direct CF asymmetries in B[yields][phi]K*.