First Observation Of The Decays (B)Over-Bar(0) -> D+K-Pi(+)Pi(-) And B- -> (Dk-)-K-0 Pi(+)Pi(-)
Roel Aaij,C. Abellanâ Beteta,Bernardo Adeva,Marco Adinolfi, C. Adrover,Anthony A. Affolder,Zeina J. Ajaltouni,Johannes Albrecht,Federico Alessio,Marc Alexander,G. D. Alkhazov,P. Alvarezâ Cartelle,Alexandre Alonso Alves,S. F. Amato,Yasmine Amhis,John T. Anderson,Robert B. Appleby,O. Aquinesâ Gutierrez,Flavio Archilli,L. Arrabito,Andrei V. Artamonov,Marina Artuso,E. L. Aslanides,Giulio Auriemma,Sebastian Bachmann,John Back,David S. Bailey,Vladislav Balagura,W. Baldini,Roger Barlow,C. Barschel,Sergey Ya Barsuk,W. Barter,Alison G. Bates,Christian W. Bauer,Th S. Bauer,Aurelio Bay,Ignacio Bediaga,S. G. Belogurov,K. S. Belous,Ivan M. Belyaev,Eli Ben-Haïm,Marc D. Benayoun,Giorgio Bencivenni, S. Benson, J. Benton,Roland Bernet,Marc Olivier Bettler,M. Vanâ Beuzekom,A. Bien,Simone Bifani,Thomas E. Bird,Andrea Bizzeti, P. M. Bjørnstad,Thomas A. Blake,F. L E Blanc,Christopher Blanks,Johan Blouw,Steven R. Blusk,Aleksandr V. Bobrov,Valerio Bocci,Alex E. Bondar,Nikolai F. Bondar,W. Bonivento,Silvia Borghi,Alessandra Borgia,Themis J V Bowcock,Concezio Bozzi,T. Brambach,Jo FJ J V D Van Den Brand,J. Bressieux,D. Brett,Markward Britsch,T. Britton,Nick H. Brook,Heather N. Brown, A. Büchler-Germann, I. Burducea,Albert Bursche,Jan A M A Buytaert,Sandro Cadeddu,Olivier H. Callot,Marta Calvi,M. CalvoGomez,Alessandro Camboni,Pierluigi L. Campana,Angelo Carbone,G. Carboni,R. Cardinale,Alessandro Cardini,Laurence Carson,K. Carvalhoakiba,Gianluigi L. Casse,Marco Cattaneo,Ch Cauet,M. J. Charles,Ph H. Charpentier,Nicola Chiapolini,Krzysztof D. Ciba,X. CidVidal, G. Ciezarek,Peter E L L Clarke,Marco Clemencic,H. V. Cliff,Joel Closier,Cornelia Coca,Victor Coco,J. G. Cogan,Paula P. Collins,A. Comerma-Montells,Florin Constantin,A. Contu,Alistair J R Cook,M. Coombes,Gloria Corti, G. A. Cowan,R. Currie,Carmelo D'Ambrosio,P. Y. David,P. N Y David,I. DeBonis,S. DeCapua,M. DeCian,F. Delorenzi,J. M. Demiranda,L. DePaula,P. Desimone,D. Décamp,M. Deckenhoff,Hubert Degaudenzi,L. 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PHYSICAL REVIEW LETTERS（2012）
引用 12|浏览158
摘要
First observations of the Cabibbo-suppressed decays (B) over bar (0) -> D+K-pi(+)pi(-) and B- -> (DK-)-K-0 pi(+)pi(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B((B) over bar (0) -> D+K-pi(+)pi(-))/B((B) over bar (0) -> D+pi(-)pi(+)pi(-) = (5.9 +/- 1.1 +/- 0.5) x 10(-2) and B(B- -> (DK-)-K-0 pi(+)pi(-))/B(B- -> D-0 pi(-)pi(+)pi(-)) = (0.9 +/- 1.3 +/- 0.9) x 10(-2), where the uncertainties are statistical and systematic, respectively. The B- -> (DK-)-K-0 pi(+)pi(-) decay is particularly interesting, as it can be used in a similar way to B- -> (DK-)-K-0 to measure the Cabibbo-Kobayashi-Maskawa phase gamma.
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