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Languages : en
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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.
Author: 陳昱蓁
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Languages : en
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The authors present improved measurements of the branching fraction and CP asymmetry for the process B{sup ±} → [rho]{sup ±}[pi]°. The data sample corresponding to 211 fb−1 comprises 232 million [Upsilon](4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The yield and CP asymmetry are measured using an extended maximum likelihood fitting method. The branching fraction and Cp asymmetry are found to be [Beta](B{sup ±} → [rho]{sup ±}[pi]°) = [10.2 {+-} 1.4(stat) {+-} 0.9(syst)] x 10−6 and [Alpha]{sub CP}(B{sup {+-}} → [rho]{sup {+-}}[pi]°) = -0.01 {+-} 0.13(stat) {+-} 0.02(syst).
Author: B. Aubert
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Languages : en
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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.
Author: Martin Ritter
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Languages : en
Pages : 0
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![Measurement of the B+- --] Rho+- Pi0 Branching Fraction and Direct CP Asymmetry PDF](https://books.google.com/books/content/images/frontcover/-qqNAQAACAAJ?fife=w80-h100)
Author: J. C. Chen
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Languages : en
Pages : 17
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An improved measurement of the process B{sup {+-}} {yields} {rho}{sup {+-}}{pi}{sup 0} is presented. The data sample of 211 fb{sup -1} comprises 232 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The yield and CP asymmetry are calculated using an extended maximum likelihood fitting method. The branching fraction and asymmetry are found to be {Beta}(B{sup {+-}} {yields} {rho}{sup {+-}}{pi}{sup 0}) = [10.0 {+-} 1.4 (Stat.) {+-} 0.9 (Syst.)] x 10{sup -6} and {Alpha}{sub CP}(B{sup {+-}} {yields} {rho}{sup {+-}}{pi}{sup 0}) = -0.01 {+-} 0.13 (Stat.) {+-} 0.02 (Syst.), superseding previous measurements. The statistical significance of the signal is calculated to be 8.7{sigma}.
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Category : Libraries
Languages : en
Pages : 242
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![Measurements of the Branching Fraction, CP Asymmetry and Isospin Asymmetry of the Radiative Penguin Deca [neutral B Meson Decays to Neutral Kaon(0) Resonance] and a Search for the Decays [B Meson Decays to Rho Photon] and [neutral B Meson Decays to Omega Photon] at BABAR PDF](https://books.google.com/books/content/images/frontcover/UBeDkPXoOIcC?fife=w80-h100)
Author: Patrick Michael Spradlin
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Languages : en
Pages : 554
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Author: K. George
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Languages : en
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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).
Author: Martin Ritter
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Category :
Languages : en
Pages : 159
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