Measurement Of Branching Fractions And Charge Asymmetries In B Plus Or Minus Density Plus Or Minus Pi 0 And B Plus Or Minus Density 0 Pi Plus Or Minus Decays And Search For B0 Density 0 Pi O

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Measurement Of Branching Fractions And Charge Asymmetries In B Plus Or Minus Density Plus Or Minus Pi 0 And B Plus Or Minus Density 0 Pi Plus Or Minus Decays And Search For B0 Density 0 Pi O

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language : en
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Release Date : 2003

Measurement Of Branching Fractions And Charge Asymmetries In B Plus Or Minus Density Plus Or Minus Pi 0 And B Plus Or Minus Density 0 Pi Plus Or Minus Decays And Search For B0 Density 0 Pi O 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.

Measurement Of Branching Fractions And Charge Asymmetries In B Rho Pi0 And B Rho0pi Decays And Search For B0 Rho0pi0

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language : en
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Release Date : 2004

Measurement Of Branching Fractions And Charge Asymmetries In B Rho Pi0 And B Rho0pi Decays And Search For B0 Rho0pi0 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 authors present measurements of branching fractions and charge asymmetries in B-meson decays to [rho][sup +][pi][sup 0], [rho][sup 0][pi][sup +] and [rho][sup 0][pi][sup 0]. The data sample comprises 89 x 10[sup 6] [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetries-energy B Factory at SLAC. They find the charge-averaged branching fractions [Beta](B[sup +] [yields] [rho][sup +][pi][sup 0]) = (10.9 [+-] 1.9(stat) [+-] 1.9(syst)) x 10[sup -6] and [Beta](B[sup +] [yields] [rho][sup 0][pi][sup +]) = (9.5 [+-] 1.1 [+-] 0.8) x 10[sup -6], and they set a 90% confidence-level upper limit [Beta](B[sup 0] [yields] [rho][sup 0][pi][sup 0])

Branching Fractions And Cp Asymmetries In B0 To Pi0pi0 B To Pi Pi0 And B To K Pi0 Decays And Isospin Analysis Of The B To Pi Pi System

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language : en
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Release Date : 2004

Branching Fractions And Cp Asymmetries In B0 To Pi0pi0 B To Pi Pi0 And B To K Pi0 Decays And Isospin Analysis Of The B To Pi Pi System 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.

Based on a sample of 227 million B{bar B} pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the branching fraction?(B° →?°?°) = (1.17 ± 0.32 ± 0.10) x 10−6, and the asymmetry C{sub?°?°} = -0.12 ± 0.56 ± 0.06. The B° →?°?° signal has a significance of 5.0?. We also measure?(B →?+?°) = (5.8 ± 0.6 ± 0.4) x 10−6,?(B+ → K+?°) = (12.0 ± 0.7 ± 0.6) x 10−6, and the charge asymmetries?{sub?+{pi}°} = -0.01 ± 0.10 ± 0.02 and?{sub K{sup +}{pi}°} = 0.06 ± 0.06 ± 0.01. Using isospin relations we find an upper bound on the angle difference.

Measurement Of Branching Fractions And Cp Violating Charge Asymmetries In B Sup Yields Rho Sup Pi Sup 0 And B Sup Yields Rho Sup 0 Pi Sup Decays And Search For B Sup 0 Yields Rho Sup 0 Pi Sup 0

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language : en
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Measurement Of Branching Fractions And Cp Violating Charge Asymmetries In B Sup Yields Rho Sup Pi Sup 0 And B Sup Yields Rho Sup 0 Pi Sup Decays And Search For B Sup 0 Yields Rho Sup 0 Pi Sup 0 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 preliminary measurements of branching fractions and CP-violating charge asymmetries in B-meson decays to[rho][pi]. The data sample comprises 89 million[Upsilon](4S)[yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factor at SLAC. They find the charge-averaged branching fractions[Beta](B[sup+][yields][rho][sup+][pi][sup 0])= (11.0[+-] 1.9(stat.)[+-] 1.9(syst.)) x 10[sup -6] and[Beta](B[sup+][yields][rho][sup 0][pi][sup+])= (9.3[+-] 1.0(stat.)[+-] 0.8(syst.)) x 10[sup -6]; they set a 90% confidence-level upper limit of[Beta](B[sup 0][yields][rho][sup 0][pi][sup 0])

Measurement Of Branching Fractions And Charge Asymmetries In B Rho Pi0 And B Rho0pi Decays And Search For B0 Rho0pi0

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Author : B. Aubert
language : en
Publisher:
Release Date : 2003

Measurement Of Branching Fractions And Charge Asymmetries In B Rho Pi0 And B Rho0pi Decays And Search For B0 Rho0pi0 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 2003 with categories.

The authors present measurements of branching fractions and charge asymmetries in B-meson decays to {rho}{sup +}{pi}{sup 0}, {rho}{sup 0}{pi}{sup +} and {rho}{sup 0}{pi}{sup 0}. The data sample comprises 89 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetries-energy B Factory at SLAC. They find the charge-averaged branching fractions {Beta}(B{sup +} {yields} {rho}{sup +}{pi}{sup 0}) = (10.9 {+-} 1.9(stat) {+-} 1.9(syst)) x 10{sup -6} and {Beta}(B{sup +} {yields} {rho}{sup 0}{pi}{sup +}) = (9.5 {+-} 1.1 {+-} 0.8) x 10{sup -6}, and they set a 90% confidence-level upper limit {Beta}(B{sup 0} {yields} {rho}{sup 0}{pi}{sup 0})

Measurement Of Branching Fractions And Charge Asymmetries In B Decays To An Eta Meson And A K Meson

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language : en
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Release Date : 2006

Measurement Of Branching Fractions And Charge Asymmetries In B Decays To An Eta Meson And A K 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 2006 with categories.

The authors present measurements of branching fractions and charge asymmetries for the decays B 2![eta]K*, where K8 indicates a spin 0, 1, or 2 K [pi] system. The data sample corresponds to 344 x 106 B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy ee− collider at SLAC. They measure the branching fractions (in units of 10−6): [Beta](B° 2![eta]K*°(892)) = 16.5 ± 1.1 ± 0.8, [Beta](B 2![eta]K*+(892)) = 18.9 ± 1.8 ± 1.3, [Beta](B° 2*0°) = 11.0 ± 1.6 ± 1.5, [Beta](B+ 20*+) = 18.2 ± 2.6 ± 2.6, [Beta](B° 2![eta]K*2°(1430)) = 9.6 ± 1.8 ± 1.1, and [Beta](B+ 2![eta]K*2+(1430)) = 9.1 ± 2.7 ± 1.4. They also determine the charge asymmetries for all decay modes.

Improved Measurements Of Neutral B Decay Branching Fractions To K0s Pi Pi And The Charge Asymmetry Of B0 K Pi

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Author : J. C. Chen
language : en
Publisher:
Release Date : 2005

Improved Measurements Of Neutral B Decay Branching Fractions To K0s Pi Pi And The Charge Asymmetry Of B0 K Pi written by J. C. Chen 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 authors analyze the decay B{sup 0} {yields} K{sub S}{sup 0}{pi}{sup +}{pi}{sup -} using a sample of 232 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. A maximum likelihood fit finds the following branching fractions: {Beta}(B{sup 0} {yields} K{sup 0}{pi}{sup +}{pi}{sup -}) = (43.0 {+-} 2.3 {+-} 2.3) x 10{sup -6}, {Beta}(B{sup 0} {yields} f{sub 0}({yields} {pi}{sup +}{pi}{sup -})K{sup 0}) = (5.5 {+-} 0.7 {+-} 0.5 {+-} 0.3) x 10{sup -6} and {Beta}(B{sup 0} {yields} K*{sup +}{pi}{sup -}) = (11.0 {+-} 1.5 {+-} 0.5 {+-} 0.5) x 10{sup -6}. For these results, the first uncertainty is statistical, the second is systematic, and the third (if present) is due to the effect of interference from other resonances. They also measure the CP-violating charge asymmetry in the decay B{sup 0} {yields} K*{sup +}{pi}{sup -}, {Alpha}{sub K*{pi}} = -0.11 {+-} 0.14 {+-} 0.05.

Branching Fraction And Charge Asymmetry Measurements Inb To J Psi Pi Pi Decays

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language : en
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Release Date : 2007

Branching Fraction And Charge Asymmetry Measurements Inb To J Psi 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 2007 with categories.

The authors study the decays B° → J/???− and B+ → J/??+?°, including intermediate resonances, using a sample of 382 million B{bar B} pairs recorded by the BABAR detector at the PEP-II e+e− B factory. They measure the branching fractions?(B° → J/??°) = (2.7 ± 0.3 ± 0.17) x 10−5 and?(B+ → J/??+) = (5.0 ± 0.7 ± 0.31) x 10−5. The authors also set the following upper limits at the 90% confidence level:?(B° → J/??+?− non-resonant)

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 Fractions Of B Sup Plus R Arrow Psi 2s K Sup Plus And B Sup O R Arrow Psi 2s K Sup Asterisk 0 Decays At Cdf

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Author :
language : en
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Release Date : 2001

Branching Fractions Of B Sup Plus R Arrow Psi 2s K Sup Plus And B Sup O R Arrow Psi 2s K Sup Asterisk 0 Decays 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 2001 with categories.

This paper describes the observation of the decays B[sup[plus]][r-arrow][psi](2S)K[sup[plus]] and B[sup 0][r-arrow][psi](2S)K[sup[asterisk]](892)[sup 0] in 1.8 TeV p[ovr p] collisions and presents measurements of the branching fractions Br(B[sup[plus]][r-arrow][psi](2S)K[sup[plus]]) and Br(B[sup 0][r-arrow][psi](2S)K[sup[asterisk]](892)[sup 0]) relative to Br(B[sup[plus]][r-arrow] J/[psi]K[sup[plus]]) and Br(B[sup 0][r-arrow] J/[psi]K[sup[asterisk]](892)[sup 0]), respectively. The[psi](2S) mesons are reconstructed in both the[psi](2S)[r-arrow][mu][sup[plus]][mu][sup[minus]] and[psi](2S)[r-arrow] J/[psi][pi][sup[plus]][pi][sup[minus]] channels. The world average branching fractions for the J/[psi] channels are used to extract the absolute branching fractions Br(B[sup[plus]][r-arrow][psi](2S)K[sup[plus]])= (6.8[plus-minus]1.0(stat.)[plus-minus]1.4(syst.))[times]10[sup[minus]4] and Br(B[sup 0][r-arrow][psi](2S)K[sup[asterisk]](892)[sup 0])= (9.0[plus-minus]2.1(stat.)[plus-minus]2. 0(syst.))[times]10[sup[minus]4]. 9 refs., 13 figs., 8 tabs.