Measurements Of Branching Fractions And Time Dependent Cp Violating Asymmetries In B To Eta K Decays

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From Quarks To Black Holes Progress In Understanding The Logic Of Nature Proceedings Of The International School Of Subnuclear Physics

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Author : Antonino Zichichi
language : en
Publisher: World Scientific
Release Date : 2005-06-16

From Quarks To Black Holes Progress In Understanding The Logic Of Nature Proceedings Of The International School Of Subnuclear Physics written by Antonino Zichichi and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-06-16 with Science categories.

This volume is a unique report on the frontiers of subnuclear physics presented by global specialists in a clear and rigorous style.The question of Lattice QCD is presented by R D Kenway, and that of Quark-Gluon Plasma Physics by F Karsch. Quantum Field theory is discussed by R G Dijkgraff, and the status of Local Supersymmetry by M J Duff. Detailed analysis of Supersymmetry in Nuclei is made by F Iachello, and that of Inflation, Dark Matter and Dark Energy by E W Kolb. Compactified dimensions are outlined by I Antoniadis, Horizons in the quantization of the gravitational force by Nobel Laureate G 't Hooft, as also are Neutrino Oscillations by G Fogli and Fundamental Constants by H Fritzsch. The experimental data from BNL and Babar are presented by T W Ludlum and M A Giorgi, those from Fermilab and Hera by Parke and G Wolf. The status at CERN is given by L Maiani for the LHC and by W-D Schlatter for the non-LHC experiments. Highlights from Gran Sasso are presented by A Bettini. This volume also contains reports by a selected group of “new talents” on various topics in the field of subnuclear physics.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences

Measurements Of Branching Fractions And Time Dependent Cp Violating Asymmetries In B To Eta K Decays

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Author :
language : en
Publisher:
Release Date : 2005

Measurements Of Branching Fractions And Time Dependent Cp Violating Asymmetries In B To Eta K 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 2005 with categories.

Measurements Of Cp Violating Asymmetries And Branching Fractions In B Meson Decays To Eta K

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Author :
language : en
Publisher:
Release Date : 2003

Measurements Of Cp Violating Asymmetries And Branching Fractions In B Meson Decays To Eta K 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.

Physics Briefs

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Author :
language : en
Publisher:
Release Date : 1991

Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Physics categories.

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

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Author :
language : en
Publisher:
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.

Measurements Of Cp Violating Asymmetries And Branchingfractions In B Decays To Omegak And Omegapi

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

Measurements Of Cp Violating Asymmetries And Branchingfractions In B Decays To Omegak And Omegapi 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 present measurements of CP-violating asymmetries and branching fractions for the decays B{sup +} {yields} {omega}{pi}{sup +}, B{sup +} {yields} {omega}K{sup +}, and B{sup 0} {yields} {omega}K{sup 0}. The data sample corresponds to 232 million B{bar B} pairs produced by e{sup +}e{sup -} annihilation at the {Upsilon}(4S) resonance. For the decay B{sup 0} {yields} {omega}K{sub s}{sup 0}, we measure the time-dependent CP-violation parameters S = 0.51{sub -0.39}{sup +0.35} {+-} 0.02, and C = -0.55{sub -0.26}{sup +0.28} {+-} 0.03. We also measure the branching fractions, in units of 10{sup -6}, {Beta}(B{sup +} {yields} {omega}{pi}{sup +}) = 6.1 {+-} 0.7 {+-} 0.4, {Beta}(B{sup +} {yields} {omega}K{sup +}) = 6.1 {+-} 0.6 {+-} 0.4, and {Beta}(B{sup 0} {yields} {omega}K{sup 0}) = 6.2 {+-} 1.0 {+-} 0.4, and charge asymmetries {Alpha}{sub ch}(B{sup +} {yields} {omega}{pi}{sup +}) = -0.01 {+-} 0.10 {+-} 0.01 and {Alpha}{sub ch}(B{sup +} {yields} {omega}K{sup +}) = 0.05 {+-} 0.09 {+-} 0.01.

Government Reports Announcements Index

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Author :
language : en
Publisher:
Release Date : 1993

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 1993 with Science categories.

Measurements Of Branching Fraction And Cp Violation Inb Meson Rare Decays To Final States Containing Eta Or Eta Mesons In The Babar Experiment At Slac

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Author :
language : en
Publisher:
Release Date : 2007

Measurements Of Branching Fraction And Cp Violation Inb Meson Rare Decays To Final States Containing Eta Or Eta Mesons In The Babar Experiment At Slac 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.

Note that the main goal of this thesis work is the measurement of the branching fractions, charge asymmetry, and Time-Dependent CP Violation in [eta]'K° mode. All other measurements are reported here for completion because they are connected by similar physics arguments. They are part of the Milan analysis activity, done by undergraduate students. They should not be considered as done in this thesis work. The measurements of the two body-modes [eta][eta], [eta][phi], and [eta]'[phi] are used to determine a theoretical bound based on SU(3) flavor symmetry for the difference between SM prediction and the experimental measurements of CP violation parameters in b → s loop-dominated modes. In general for this estimation we need to measure the branching fractions (or upper limits) of neutral B decays to two-body modes with [eta]', [eta], [phi], [omega], [pi]°, K°, K*° [13, 14, 15, 16]. There is an important issue related to the branching fractions of [eta]'K (charged and neutral) modes. Since the discover of B → [eta]'K in 1997 [17] with high branching fraction (higher than expected), it was found that the corresponding mode with [eta] is suppressed. This fact was pointed out by Lipkin in 1991 [18]. In particular, using arguments concerning the [eta]-[eta]' mixing angle and the parity of K or K* we can say that [eta]'K and [eta]K* are enhanced, while [eta]K and [eta]'K* are suppressed. This scheme is experimentally verified. The branching fraction of all these modes are already measured, but the B° → [eta]K°. So it is important to measure also this mode to complete the scenario. Finally we report on the measurements of the radiative modes B → [eta]'K[gamma] and of the three-body mode B → [eta]'[eta]'K. Both cases are good candidates to manifest effects due to NP in CP violations [19, 20]. For all measurements we use an unbinned maximum likelihood fit to extract the number of signal yields and CP parameters. To perform these fits we have developed a flexible program in C++ language, called MiFit, which has taken a consistent part of the work described in this thesis. This program is used in all Milan analyses. All these measurements have been presented in conferences and published in Physical Review Letters or Physics Review D (Rapid Communication). These measurements are official BABAR results, approved by the Collaboration. The thesis is structured in eight chapters. In the first chapter we describe the CP violation and how it is explained in the SM. We give the theoretical description of the modes studied in this thesis. We report also the latest main results for the CP violation. In the second chapter we describe the BABAR detector with a description of each sub-detector. In the third chapter we describe the software used by the collaboration, in particular the code used in the events reconstruction, which is described in the fourth chapter. In the fifth chapter we describe the software used to selected the events and the MiFit program. After that, in the sixth chapter we show the discriminating variables used for the events selection and how the selection is done. In the last two chapters we report the analyses and results of the branching fractions and charge asymmetries measurements and the time-dependent CP asymmetries analysis of the mode B° → [eta]'K°, respectively.

High Energy Physics Index

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Author :
language : en
Publisher:
Release Date : 1990

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 1990 with Nuclear physics categories.

Branching Fractions And Cp Violating Asymmetries In Radiative B Decays To Eta K Gamma

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Author :
language : en
Publisher:
Release Date : 2008

Branching Fractions And Cp Violating Asymmetries In Radiative B Decays To Eta K Gamma written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

The authors present measurements of the CP-violation parameters S and C for the radiative decay B° →?K{sub S}°?; for B →?K? they also measure the branching fractions and for B →?K+? the time-integrated charge asymmetry?{sub ch}. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465 x 106 B{bar B} pairs produced in e+e− annihilation. The results are S = -0.18{sub -0.46}{sup +0.49} ± 0.12, C = -0.32{sub -0.39}{sup +0.40} ± 0.07,?(B° →?K°?) = (7.1{sub -2.0}{sup +2.1} ± 0.4) x 10−6,?(B+ →?K+?) = (7.7 ± 1.0 ± 0.4) x 10−6, and?{sub ch} = ( -9.0{sub -9.8}{sup +10.4} ± 1.4) x 10−2. The first error quoted is statistical and the second systematic.