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| Author | : Giovanni Marchiori |
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| Release | : 2005 |
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| Release | : 1864 |
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| Author | : B. Aubert |
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| Total Pages | : 7 |
| Release | : 2003 |
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The authors present a study of B{sup -} {yields} D{sub CP}{sup 0} K{sup -} decays, where D{sub CP}{sup 0} is reconstructed in CP-event channels, based on a sample of 88.8 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. They measure the ratio of Cabibbo-suppressed to Cabibbo-favored branching fractions {Beta}(B{sup -} {yields} D{sub CP}{sup 0} K{sup -})/{Beta}(B{sup -} {yields} D{sub CP}{sup 0}{pi}{sup -}) = (8.8 {+-} 1.6(stat) {+-} 0.5(syst)) x 10{sup -2} and the CP asymmetry A{sub CP} = 0.07 {+-} 0.17(stat) {+-} 0.06(syst). The authors also measure {Beta}(B{sup -} {yields} D{sup 0}K{sup -})/{Beta}(B{sup -} {yields} D{sup 0}{pi}{sup -}) = (8.31 {+-} 0.35(stat) {+-} 0.20(syst)) x 10{sup -2} using a sample of 61.0 million B{bar B} pairs.
| Author | : James Robert Gaillard |
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| Total Pages | : 0 |
| Release | : 2005 |
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| Total Pages | : 5 |
| Release | : 2004 |
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The authors have reconstructed B− --> D°K− decays with D° mesons decaying to non-CP (K−?), CD-even (K−K+,?−?+) and CP-odd (K°{sub s}?°) eigenstates. They have measured the CP asymmetries A{sub CP{sup +}} = 0.40 ± 0.15(stat) ± 0.08(syst), A{sup CP{sup -}} = 0.21 ± 0.17(stat) ± 0.07(syst), and the double ratio of branching fractions R+ = 0.87 ± 0.14(stat) ± 0.06(syst), R− = 0.80 ± 0.14(stat) ± 0.08(syst). These results improve the previous existing measurements from BABAR. All results presented in this document are preliminary.
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| Total Pages | : 172 |
| Release | : 2010 |
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The primary goals of the BABAR experiment are the detection of CP violation (CPV) in the B meson system, the precise measurement of some of the elements of the CKM matrix and the measurement of the rates of rare B meson decays. At present, BABAR has achieved major successes: (1) the discovery, in neutral B decays, of direct and mixing-induced CP violation; (2) accurate measurements of the magnitudes of the CKM matrix elements.
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| Total Pages | : 172 |
| Release | : 2005 |
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The primary goals of the BABAR experiment are the detection of CP violation (CPV) in the B meson system, the precise measurement of some of the elements of the CKM matrix and the measurement of the rates of rare B meson decays. At present, BABAR has achieved major successes: (1) the discovery, in neutral B decays, of direct and mixing-induced CP violation; (2) accurate measurements of the magnitudes of the CKM matrix elements.
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| Release | : 2005 |
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| Author | : James Robert Gaillard |
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| Total Pages | : 356 |
| Release | : 2005 |
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| Total Pages | : 7 |
| Release | : 2009 |
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We present an analysis of the decays B° → K*°(892)? and B → K*+(892)? using a sample of about 383 million B{bar B} events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions?(B° → K*°?) = (4.47 ± 0.10 ± 0.16) x 10−5 and?(B+ → K*+?) = (4.22 ± 0.14 ± 0.16) x 10−5. We constrain the direct CP asymmetry to be -0.033
