Download or read book Measurements of the Branching Fraction and CP Violating Asymmetries of B sup 0 K sup 0 pi sup 0 Decays written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No abstract prepared.

Download or read book Measurements of the Branching Fraction and CP Violating Asymmetries of B K s pi Decays written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MEASUREMENTS OF BRANCHING FRACTIONS AND CP VIOLATING ASYMMETRIES IN B0 PI PI K PI K K DECAYS written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 88 million[Upsilon](4S)[yields] B[bar B] decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. From a time-independent fit we measure the charge-averaged branching fractions[Beta](B[sup 0][yields][pi][sup+][pi][sup -])= (4.7[+-] 0.6[+-] 0.2) x 10[sup -6] and[Beta](B[sup 0][yields] K[sup+][pi][sup -])= (17.9[+-] 0.9[+-] 0.7) x 10[sup -6], where the first uncertainty is statistical and the second is systematic; the 90% confidence level upper limit[Beta](B[sup 0][yields] K[sup+]K[sup -])

Download or read book Measurement of the Branching Fraction and the CP Violating Asymmetry for the Decay B0 to K0s Pi0 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors measure the branching fraction and the CP-violating asymmetry of B° 2!K{sub S}°[pi]° decays with 227 million [Upsilon](4S) 2!B{bar B} events collected with the BABAR detector at the PEP-II asymmetric-energy ee− collider at SLAC. They obtain a branching fraction [Beta](B° 2!K°[pi]°) = (11.4 ± 0.9 ± 0.6) x 10−6 and CP-violating asymmetry parameters C{sub K{sub S}°[pi]°} = 0.06 ± 0.18 ± 0.03 and S{sub K{sub S}°[pi]°} = 0.35{sub -0.33}{sup +0.30} ± 0.04, where the first error is statistical and the second systematic.

Download or read book A Measurement of the Branching Fractions and CP Asymmetries of the Decays B 2 K pi 0 and B 2 rho pi 0 at BaBar written by and published by . This book was released on 2005 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the branching fractions (average over charge-conjugate decays), B, and CP violating asymmetries, ACP, of the decays B± → K*±[pi]0 and B± → [rho]±[pi]0 are presented.

Download or read book Measurements of the Branching Fraction and CP Violation Asymmetries in B0 f0 980 Ks written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the branching fraction and CP-violating asymmetries in the decay B[sup 0] [yields] f[sub 0](980)K[sub S][sup 0]. The results are obtained from a data sample of 123 x 10[sup 6] [Upsilon](4S) [yields] B[bar B] decays. From a time-dependent maximum likelihood fit they measure the branching fraction [Beta](B[sup 0] [yields] f[sub 0](980)([yields][Pi][sup +][pi][sup 0])K[sup 0]) = (6.0 [+-] 0.9 [+-] 0.6 [+-] 1.2) x 10[sup -6], the mixing-induced CP violation parameter S = 1.62[sub -0.51][sup +0.56] [+-] 0.09 [+-] 0.04 and the direct CP violation parameter C = 0.27 [+-] 0.36 [+-] 0.10 [+-] 0.07, where the first errors are statistical, the second systematic and the third due to model uncertainties. They measure the f[sub 0](980) mass and width to be m[sub f[sub 0(980)]] = (980.6 [+-] 4.1 [+-] 0.5 [+-] 4.0) MeV/c[sup 2] and [Lambda][sub f[sub 0(980)]] = (43[sub -9][sup +12] [+-] 3 [+-] 9) MeV/c[sup 2], respectively.

Download or read book Measurements of Branching Fraction Ratios and CP asymmetries in Suppressed B D Kappa pi K and B D Kappa pi pi Decays written by Paola Garosi and published by . This book was released on 2012* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of CP Asymmetries and Branching Fractions in B0 Pi Pi B0 K Pi B0 Pi0 Pi0 B0 K0 Pi0 and Isospin Analysis of B Pi Pi Decays written by and published by . This book was released on 2008 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of improved measurements of the CP-violating asymmetries and branching fractions in the decays B° →??−, B° → K+?−, B° →?°?°, and B° → K°?°. This update includes all data taken at the?(4S) resonance by the BABAR experiment at the asymmetric PEP-II B-meson factory at SLAC, corresponding to 467 ± 5 million B{bar B} pairs. They find S{sub??} = -0.68 ± 0.10 ± 0.03, C{sub??} = -0.25 ± 0.08 ± 0.02,?{sub K{sub?}} = -0.107 ± 0.016{sub -0.004}, {sup +0.006}, C{sub?°?°} = -0.43 ± 0.26 ± 0.05,?(B° →?°?°) = (1.83 ± 0.21 ± 0.13) x 10−6,?(B° → K°?°) = (10.1 ± 0.6 ± 0.4) x 10−6, where the first error is statistical and the second is systematic. They observe CP violation with a significance of 6.7? in B° → {pi}− and 6.1? in B° → K+{pi}−. Constraints on the Unitarity Triangle angle? are determined from the isospin relation between all B → {pi}{pi} rates and asymmetries.

Download or read book Branching Fraction and Time Dependent CP Asymmetry in Neutral B Decays to Psi and a Neutral Pion written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invariance of physical laws under the combination of exchange of particles with antiparticles (charge conjugation, C) and reversal of coordinates (parity, P) is called CP symmetry. The violation of CP symmetry was first discovered in 1964 in the neutral kaon system, and is in general one of the great puzzles of particle physics. The recent observation of CP violation in the B meson system has been a simultaneous success for model predictions and experiment. The opportunity now exists to probe details of the underlying mechanisms. This thesis presents measurements of the branching fraction and time-dependent CP-violating asymmetry in neutral B decays to J/[psi][pi]°. The decay amplitude for this channel features both tree and penguin diagram contributions, the interference of which can yield a result for the asymmetry differing from that found in the ''golden mode'' B° 2!J/[psi] K{sub s}°. Using the measured branching fraction and CP asymmetry, constraints are placed on the ratio of penguin to tree amplitudes in B° 2!J/[psi][pi]°. In addition, the impact on the CP asymmetry measurement in B° 2!J/[psi] K{sub s}° is discussed. The results are presented for ee− annihilation data collected with the BABAR detector on the [Upsilon](4S) resonance at the PEP-II asymmetric-energy B Factory at SLAC. The measurement of the branching fraction, based on about 23 million B{bar B} pairs collected between October 1999 and October 2000, yields BF(B° 2!J/[psi][pi]°) = (2.0 ± 0.6 (stat) ± 0.2(syst)) x 10−5. With about 88 million B{bar B} pairs collected during the years 1999-2002, our results for the coefficients of the cosine and sine terms of the CP asymmetry are C{sub J/{psi}[pi]°} = 0.38 ± 0.41 (stat) ± 0.09 (syst) and S{sub J/{psi}[pi]°} = 0.05 ± 0.49 (stat) ± 0.16 (syst).

Download or read book Study of Branching Fractions and CP Violating Asymmetries in B Meson Decays to Rho And Pion Final State with the BABAR Detector written by Jinwei Wu and published by . This book was released on 2006 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of branching fractions and CP-violating 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 asymmetric-energy B Factory at SLAC. We 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 0} {yields} {rho}{sup 0}{pi}{sup +}) = (9.5 {+-} 1.1 {+-} 0.9) x 10{sup -6}, and we set a 90% confidence-level upper limit {Beta}(B{sup 0} {yields} {rho}{sup 0}{pi}{sup 0})

Download or read book Measurement of the Branching Fractions and CP Violating Asymmetries of Charmless Hadronic B Decays K pi at BaBar written by Nicole Isabelle Chevalier and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Branching Fraction Ratios and mathit CP asymmetries in Suppressed B to D to K pi K and B to D to K pi pi Decays written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of CP Violating Asymmetries and BranchingFractions in B Decays to OmegaK and OmegaPi written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Measurement of the Branching Fractions and CP Violating Asymmetries of Charmless Hadronic B Decays B to K pi at BaBar written by and published by . This book was released on 2002 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dedham Library Scrapbook 1972 1980 written by and published by . This book was released on 1972 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 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 published by . This book was released on 2005 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Branching Fraction And Search for Direct CP Violation in the B J Psi Pi Decay Mode at BaBar written by Francesco Fobozzi and published by . This book was released on 2006 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenon of CP-violation in weak interactions, discovered in 1964 in decays of neutral kaons, receives a simple and elegant explanation in the Standard Model with three generations of quarks. Indeed, in this model the common source of CP-asymmetry phenomena is represented by a simple complex phase in the unitary matrix (the Cabibbo-Kobayashi-Maskawa matrix) describing the charged weak couplings of the quarks. This simple scheme has never received an accurate validation, because the phenomenological parameters determined from measurements of CP-violation in kaons decays are related to the fundamental parameters of the theory in a complex way, sensitive to large theoretical uncertainties. On the contrary, decays of neutral B mesons like B{sup 0} {yields} J/{psi} K{sub S}{sup 0} represent a unique laboratory to test the predictions of the theory because they are expected to show significant CP-violation effects, the magnitude of which is cleanly related to the Standard Model parameters. Thus experimental facilities have been built with the purpose of performing extensive studies of B decays. The BABAR experiment is operating at one of these facilities, at the Stanford Linear Accelerator Center. It is collecting data at the PEP-II asymmetric e{sup +}e{sup -} collider (E{sub e{sup -}} = 9.0 GeV; E{sub e{sup +}} = 3.1 GeV), a high-luminosity accelerator machine (L = 3 x 10{sup 33} cm{sup -2}s{sup -1}). The center-of-mass energy (10.58 GeV) of the e{sup +}e{sup -} system at PEP-II allows resonant production of the {Upsilon}(4S), a b{bar b} bound state, which decays almost exclusively in a B{sup 0}{bar B}{sup 0} or a B{sup +}B{sup -} pair. A high-acceptance detector, projected and built by a wide international collaboration, detects and characterizes the decay products of the B mesons. From the analysis of the data collected during the first two years of operation, the BABAR collaboration has established CP-violation in decays of neutral B mesons at the 4.1{sigma} level. Besides the primary goal of CP-violation studies, the high luminosity of PEP-II, coupled with the high acceptance of the BABAR detector, allows competitive studies of the properties of a wide set of B decay modes. In particular, measurements of non-leptonic decays are extremely useful to understand the dynamics of the non-perturbative strong interactions involved in these processes. In this thesis a study of the non-leptonic decay mode B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} is presented.