Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis
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Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis
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Author : B. Aubert
language : en
Publisher:
Release Date : 2006
Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis 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.
We report a measurement of CP-violating asymmetries in B{sup 0} {yields} ({rho}{pi}){sup 0} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup 0} decays using a time-dependent Dalitz plot analysis. The results are obtained from a data sample of 347 million {Upsilon}(4S) {yields} B{bar B} decays, collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure 26 coefficients of the bilinear form factor terms occurring in the time-dependent decay rate of the B{sup 0} meson and derive the physically relevant quantities from these coefficients. In particular we find a three standard deviation evidence of direct CP-violation in the B{sup 0} {yields} {rho}{sup {+-}}{pi}{sup {-+}} decays, with systematic uncertainties included. We also achieve a constraint of the angle {alpha} of the Unitarity Triangle. All results presented are preliminary.
Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis
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Author :
language : en
Publisher:
Release Date : 2007
Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis 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 report a measurement of CP-violating asymmetries in B° → (??)° →??−?° decays using a time-dependent Dalitz plot analysis. The results are obtained from a data sample of 375 million?(4S) → B{bar B} decays, collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure 26 coefficients of the bilinear form-factor terms occurring in the time-dependent decay rate of the B° meson. We derive the physically relevant quantities from these coefficients. In particular, we measure a constraint on the angle? of the Unitarity Triangle.
Measurement Of Cp Violating Asymmetries In B 0 Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis
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Author : Tomonari Scott Miyashita
language : en
Publisher:
Release Date : 2013
Measurement Of Cp Violating Asymmetries In B 0 Rho Pi 0 Using A Time Dependent Dalitz Plot Analysis written by Tomonari Scott Miyashita 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.
We present results for a time-dependent Dalitz plot measurement of CP-violating asymmetries in the mode B^0 --> pi^+ pi^- pi^0, dominated by B^0 --> rho^\pm pi^\mp (rho^\pm --> pi^\pm pi^0) decays. Our dataset is derived from the complete sample of 471 x 10^6 B-Bbar meson pairs collected by the BABAR detector at the PEP-II asymmetric-energy e^+e^- collider at the SLAC National Accelerator Laboratory, operating on the Upsilon(4S) resonance. We extract parameters describing the time-dependent B^0 --> rho pi decay probabilities and CP asymmetries, including C, DeltaC, S, and DeltaS, finding these measurements to be consistent with the results of previous analyses. Additionally, we present a two-dimensional likelihood scan of the direct CP-violation asymmetry parameters for B^0 --> rho^\pm pi^\mp decays, finding the results to be consistent with direct CP violation at ~ 2 sigma significance. Finally, we present information on the CP-violating parameter alpha, corresponding to an angle in the unitarity triangle associated with the CKM quark-mixing matrix. We perform a likelihood scan of alpha that incorporates constraints from B^\pm --> rho pi measurements by means of isospin relationships. A robustness study assessing the reliability with which alpha is extracted provides important insights into the interpretation of this result.
Study Of Branching Fractions And Cp Violating Asymmetries In B Meson Decays To Rho And Pion Final States With The Babar Detector
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Author : Jinwei Wu
language : en
Publisher:
Release Date : 2005
Study Of Branching Fractions And Cp Violating Asymmetries In B Meson Decays To Rho And Pion Final States With The Babar Detector written by Jinwei Wu 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.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 2005
Dissertation Abstracts International 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 Dissertations, Academic categories.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1970
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Nuclear energy categories.
High Energy Physics Index
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Author :
language : en
Publisher:
Release Date : 1992
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 1992 with Particles (Nuclear physics) categories.
Inis Atomindeks
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Author :
language : en
Publisher:
Release Date : 1987
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 1987 with Nuclear energy categories.
Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Decays Using A Time Dependent Daltiz Plot Analysis
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Author :
language : en
Publisher:
Release Date : 2013
Measurement Of Cp Violating Asymmetries In B0 To Rho Pi 0 Decays Using A Time Dependent Daltiz Plot Analysis 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.
Measurement Of Cp Violating Asymmetries In The B0 To K K K0 Dalitz Plot
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Author : D. Dujmic
language : en
Publisher:
Release Date : 2006
Measurement Of Cp Violating Asymmetries In The B0 To K K K0 Dalitz Plot written by D. Dujmic 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 a preliminary measurement of CP-violation parameters in the decay B{sup 0} {yields} K{sup +}K{sup -}K{sup 0}, using approximately 347 million B{bar B} events collected by the BABAR detector at SLAC. Reconstructing the neutral kaon as K{sub S}{sup 0} {yields} {pi}{sup +}{pi}{sup -}, K{sub S}{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}, or K{sub L}{sup 0}, they analyze the Dalitz plot distribution and measure fractions to intermediate states. They extract CP parameters from the asymmetries in amplitudes and phases between B{sup 0} and {bar B}{sup 0} decays across the Dalitz plot. For decays to {phi}K{sup 0}, they find {beta}{sub eff} = 0.06 {+-} 0.16 {+-} 0.05, A{sub CP} = -0.18 {+-} 0.20 {+-} 0.10, where the first uncertainty is statistical and the second one is systematic. For decays to f{sub 0}K{sup 0}, they find {beta}{sub eff} = 0.18 {+-} 0.19 {+-} 0.04, A{sub CP} = 0.45 {+-} 0.28 {+-} 0.10. Combining all K{sup +}K{sup -}K{sup 0} events and taking account of the different CP eigenvalues of the individual Dalitz plot components, they find {beta}{sub eff} = 0.361 {+-} 0.079 {+-} 0.037, A{sub CP} = -0.034 {+-} 0.079 {+-} 0.025. The trigonometric reflection at {pi}/2 - {beta}{sub eff} is disfavored at 4.6{sigma}. They also study angular distributions in B{sup 0} {yields} K{sup +}K{sup -}K{sub S}{sup 0} and B{sup +} {yields} {phi}K{sup +} decays and measure the direct CP asymmetry in B{sup +} {yields} {phi}K{sup +} decays, A{sub CP} = 0.046 {+-} 0.046 {+-} 0.017.