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Search For B U Transitions In B Ku2213 Pi Pi0 D K Decays
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Book Synopsis Search for B--]u Transitions in B- --] DK- and B- --] D*K- Decays by :
Download or read book Search for B--]u Transitions in B- --] DK- and B- --] D*K- Decays written by and published by . This book was released on 2011 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for B to U Transitions in B- to [K+pi-pi0]_D K- by : J. C. Chen
Download or read book Search for B to U Transitions in B- to [K+pi-pi0]_D K- written by J. C. Chen and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors search for decays of a B meson into a neutral D meson and a kaon, with the D meson decaying into K{sup +}{pi}{sup -}{pi}{sup 0}. This final state can be reached through the b {yields} c transition B{sup -} {yields} D{sup 0}K{sup -} followed by the doubly Cabibbo-suppressed D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, or the b {yields} u transition B{sup -} {yields} {bar D}{sup 0}K{sup -} followed by the Cabibbo-favored {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}. The interference of these two amplitudes is sensitive to the angle {gamma} of the unitarity triangle. They present preliminated results based on 226 x 10{sup 6} e{sup +}e{sup -} {yields} {Upsilon}(4S) {yields} B{bar B} events collected with the BABAR detector at SLAC.
Book Synopsis Search for B --] U Transitions in B±̂ --] [K{̂u2213} Pi±̂ Pi0]_D K±̂ Decays by :
Download or read book Search for B --] U Transitions in B±̂ --] [K{̂u2213} Pi±̂ Pi0]_D K±̂ Decays written by and published by . This book was released on 2011 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a study of the decays B{sup {+-}} → DK{sup {+-}} with D mesons reconstructed in the K?−?° or K−?+?° final states, where D indicates a D° or a {bar D}° meson. Using a sample of 474 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider at SLAC, they measure the ratios R{sup {+-}} {triple_bond}?(B{sup {+-}}→[K{sup {-+}}?{sup {+-}}?°]{sub D}K{sup {+-}})/?(B{sup {+-}}→[K{sup {+-}}?{sup {-+}}?°]{sub D}K{sup {+-}}). They obtain R+ = (5−10{sup +12}(stat)−4{sup +2}(syst)) x 10−3 and R− = (12−10{sup +12}(stat)−5{sup +3}(syst)) x 10−3, from which they extract the upper limits at 90% probability: R+