Download or read book Branching Fraction and CP Asymmetries OfB 0 to K 0 sK 0 sK 0 s 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 present measurements of the branching fraction and time-dependent CP-violating asymmetries in B° → K{sub S}°K{sub S}°K{sub S}° decays based on 227 million [Upsilon](4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. They obtain a branching fraction of (6.9{sub -0.8}{sup +0.9} ± 0.6) x 10−6, and CP asymmetries C = -0.34{sub -0.25}{sup +0.28} ± 0.05 and S = -0.71{sub -0.32}{sup +0.38} ± 0.04, where the first uncertainties are statistical and the second systematic.
Download or read book Branching Fraction and CP Asymmetries OfB0 to K0 sK0 sK0 s written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2 written by and published by . This book was released on 1966 with total page 975 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Branching Fractions and CP Asymmetries in B H Hh written by Giovanni Punzi and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative branching fractions of B{sub d, s} {yields} h{sup +}h'{sup -} decays (where h, h' = K or {pi}) and direct CP asymmetry in B{sub d} {yields} K{sup +}{pi}{sup -} have been measured with 180 pb{sup -1} of data collected by the CDFII detector at the Tevatron collider. This includes the first BR measurement of a charmless B{sub s} {yields} PP decay (B{sub s} {yields} K{sup +}K{sup -}).
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 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][sup 0]. 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[sup 0][yields] J/[psi] K[sub s][sup 0]. Using the measured branching fraction and CP asymmetry, constraints are placed on the ratio of penguin to tree amplitudes in B[sup 0][yields] J/[psi][pi][sup 0]. In addition, the impact on the CP asymmetry measurement in B[sup 0][yields] J/[psi] K[sub s][sup 0] is discussed. The results are presented for e[sup+]e[sup -] 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[sup 0][yields] J/[psi][pi][sup 0])= (2.0[+-] 0.6 (stat)[+-] 0.2(syst)) x 10[sup -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][sup 0]]= 0.38[+-] 0.41 (stat)[+-] 0.09 (syst) and S[sub J/[psi][pi][sup 0]]= 0.05[+-] 0.49 (stat)[+-] 0.16 (syst).
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 Branching Fraction and Direct CP Asymmetry in B0 K0 0 Decay at Belle Ii and First Study of Two particle Correlations at Belle written by 陳昱蓁 and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurements of the Branching Fraction and Time Dependent CP Asymmetries of B0 to J Psi Pi0 Decays written by K. George and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the branching fraction and time-dependent CP asymmetries in B{sup 0} {yields} J/{psi}{pi}{sup 0} decays based on (231.8 {+-} 2.6) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction {Beta}(B{sup 0} {yields} J/{psi}{pi}{sup 0}) = (1.94 {+-} 0.22 (stat) {+-} 0.17 (syst)) x 10{sup -5}. We also measure the CP asymmetry parameters C = -0.21 {+-} 0.26 (stat) {+-} 0.06 (syst) and S = -0.68 {+-} 0.30 (stat) {+-} 0.04 (syst).
Download or read book 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 published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
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 7 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° → f0(980)K{sub S}°. The results are obtained from a data sample of 123 x 106?(4S) → B{bar B} decays. From a time-dependent maximum likelihood fit they measure the branching fraction?(B° → f0(980)(→??°)K°) = (6.0 ± 0.9 ± 0.6 ± 1.2) x 10−6, 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 f0(980) mass and width to be m{sub f{sub 0(980)}} = (980.6 ± 4.1 ± 0.5 ± 4.0) MeV/c2 and?{sub f{sub 0(980)}} = (43−9{sup +12} ± 3 ± 9) MeV/c2, respectively.
Download or read book MEASUREMENTS OF BRANCHING FRACTIONS AND DIRECT CP ASYMMETRIES IN PI PI0 K PI0 AND K0 PI0 B DECAYS written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of the analyses of B[sup+][yields] h[sup+][pi][sup 0] (with H[sup+]=[pi][sup+], K[sup+]) and B[sup 0][yields] K[sup 0][pi][sup 0] decays from a sample of approximately 88 million b[bar B] pairs collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. They measure the[pi][sup+][pi][sup 0] branching fraction and they obtain[Beta](B[sup+][yields][pi][sup+][pi][sup 0])= (5.5[sub -0.9][sup+1.0][+-] 0.6) x 10[sup -6] with a significance of 7.7[sigma] including systematic uncertainties. The measure the K[sup+][pi][sup 0] and K[sup 0][pi][sup 0] branching fractions to be[Beta](B[sup+][yields] K[sup+][pi][sup 0])= (12.8[sub -1.1][sup+1.2][+-] 1.0) x 10[sup -6] and[Beta](B[sup 0][yields] K[sup 0][pi][sup 0])= (10.4[+-] 1.5[+-] 0.8) x 10[sup -6]. At the same time, the direct CP-violating asymmetries are investigated and they find[Alpha][sub[pi][sup+][pi][sup 0]]= -0.03[sub -0.17][sup+0.18][+-] 0.02, [Alpha][sub K[sup+][pi][sup 0]]= -0.09[+-] 0.09[+-] 0.01and[Alpha][sub K[sup 0][pi][sup 0]]= 0.03[+-] 0.36[+-] 0.09, where the errors are statistical and systematic, respectively.
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 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 Measurement of the CP Asymmetry and BranchingFraction of B 0 to rho 0 K 0 written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the branching fraction and time-dependent CP asymmetry of B° → [rho]°K°. The results are obtained from a data sample of 227 x 106 [Upsilon](4S) → 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 yielding 111 ± 19 signal events they find [Beta](B° → [rho]°K°) = (4.9 ± 0.8 ± 0.9) x 10−6, where the first error is statistical and the second systematic. They report the measurement of the CP parameters S{sub {rho}°K{sub S}°} = 0.20 ± 0.52 ± 0.24 and C{sub {rho}°K{sub S}°} = 0.64 ± 0.41 ± 0.20.
Download or read book The Branching Fraction and CP Asymmetry of B and B Decays written by Sophie Eleanor Redford 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 Branching Ratios and CP Asymmetries for the Decays B0 pi Pi B0 K K Pi B0 K K written by Kolja Andreas Prothmann and published by . This book was released on 2012 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurements of the Branching Fraction and Time Dependent CP Asymmetries of B0 to J Psi Pi0 Decays written by B. Aubert and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present measurements of the branching fraction and time-dependent CP asymmetries in B{sup 0} {yields} J/{psi} {pi}{sup 0} decays based on (231.8 {+-} 2.6) 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 during the years 1999-2004. We obtain a branching fraction {Beta}(B{sup 0} {yields} J/{psi}{pi}{sup 0}) = (1.94 {+-} 0.22 (stat) {+-} 0.17 (syst)) x 10{sup -5}. They also measure the CP asymmetry parameters C = -0.21 {+-} 0.26 (stat) {+-} 0.09 (syst) and S = -0.68 {+-} 0.30 (stat) {+-} 0.04 (syst). All results presented in this paper are preliminary.
