Measurement of the Bs0→J/ψK*0 branching fraction and angular amplitudes

@inproceedings{Aaij2012MeasurementOT,
  title={Measurement of the Bs0→J/ψK*0 branching fraction and angular amplitudes},
  author={LHCb collaboration R. Aaij and Carlos Abell{\'a}n Beteta and Aleksandra Adametz and Bernardo Adeva and Marianna Adinolfi and C. Adrover and A. A. Affolder and Ziad Ajaltouni and Johannes Albrecht and Federico Alessio and Magazinov Alexander and S. Ali and Georgy Alkhazov and P. Alvarez Cartelle and A. A. Alves and Sandra Amato and Yasmine Amhis and J. Anderson and R. B. Appleby and Osvaldo Aquines Guti{\'e}rrez and Flavio Archilli and A. Artamonov and Marina Artuso and Elie Aslanides and Giulio Auriemma and Sebastian Bachmann and J. J. Back and Vladislav Balagura and Wander Baldini and R. J. Barlow and Colin Barschel and S. Barsuk and William Barter and A. Bates and Ch Bauer and Th. Bauer and Anders Bay and John Beddow and Ignacio Bediaga and S. A. Belogurov and Konstantin Belous and Igor Belyaev and Eric Benhaim and Maurice Benayoun and Giovanni Bencivenni and Sean Benson and Jack S Benton and R. Bernet and M. -O. Bettler and Martinus van Beuzekom and Anna Bie{\~n} and Simone Bifani and Thomas Bird and Andrea Bizzeti and P. M. Bj{\o}rnstad and Thomas Blake and Fr'ed'eric Blanc and C. Blanks and Johan Blouw and Steven Blusk and A. Ye. Bobrov and Valerio Bocci and Alexander Bondar and N. Bondar and Walter Bonivento and Silvia Borghi and A. Borgia and T. J. V. Bowcock and C. Bozzi and T. Brambach and J. van den Brand and Jo{\"e}l Bressieux and David Brett and Markward Britsch and Tom Britton and N. H. Brook and Henry Brown and A. Buchler-Germann and Ion Burducea and Albert Bursche and Jean Buytaert and Sandro Cadeddu and Olivier Callot and M. Calvi and Michael Gomez and Alessandro Camboni and Pierluigi Campana and Angelo Carbone and Giovanni Carboni and Roberta Cardinale and Alessandro Cardini and L. Carson and Kazuyoshi Carvalho Akiba and G. Casse and M. Cattaneo and Ch. Cauet and M. J. Charles and Ph. Charpentier and Pengcheng Chen and Nicola Chiapolini and Marcin Jakub Chrzaszcz and Krzysztof Ciba and Xavier Vidal and Gregory Max Ciezarek and P. E. L. Clarke and Marco Clemencic and Harry Cliff and Joel Closier and C. Coca and Victor Coco and Julien Cogan and Eric Cogneras and Pieter Collins and Albert Comerma-Montells and Andrea Contu and Adam Cook and M. Coombes and Gloria Corti and Benjamin Couturier and G. A. Cowan and D. C. Craik and Robert T. Currie and Claudia D'Ambrosio and P. N. Y. David and Ida de Bonis and Kristof De Bruyn and Stefano De Capua and Michel De Cian and J. M. De Miranda and Leandro De Paula and P. De Simone and Daniel Decamp and Mirko Deckenhoff and Hubert Degaudenzi and Luigi Del Buono and Caterina Deplano and Denis Derkach and Olivier Deschamps and Francesco Dettori and Je Dickens and H. G. Six Dijkstra and P. Diniz Batista and F. Domingo Bonal and S. Domingo Donleavy and Francesca Dordei and A. Dosil Su'arez and David Dossett and Anatoliy Dovbnya and Fr{\'e}d{\'e}ric Dupertuis and R. Dzhelyadin and Agnieszka Dziurda and A. S. Dzyuba and Santhosh Easo and Ulrik Egede and Victor Egorychev and Semen Eidelman and Daan van Eijk and Florian Eisele and Sara Eisenhardt and Robert Jan Ekelhof and Lars Eklund and Ibrahim El Rifai and Ch. Elsasser and D. Elsby and D. Esperante Pereira and Antonio Falabella and C. Farber and G. Fardell and Chiara Farinelli and Stephen Farry and V. Fave and V. Fernandez Albor and F. Ferreira Rodrigues and Massimiliano Ferro-Luzzi and Sergey P. Filippov and C. Fitzpatrick and M. Fontana and Flavio Fontanelli and Roger Forty and O. De Aguiar Francisco and M. Frank and Christopher M. Frei and Mikael Frosini and S. Furcas and A. Gallas Torreira and Diana Galli and Miriam Gandelman and Piero Gandini and Yan Gao and J-C. Garnier and J. Garofoli and Jordi Garra Tico and Ll. Garrido and David Gascon and C. 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  year={2012}
}
A sample of 114±11 Bs0→J/ψK -π + signal events obtained with 0.37fb -1 of pp collisions at √s=7TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes of the Bs0→J/ψK *0 decay, with K *0→K -π +. The K -π + mass spectrum of the candidates in the Bs0 peak is dominated by the K *0 contribution. Subtracting the nonresonant K -π + component, the branching fraction of Bs0→J/ψK *0 is (4.4-0.4+0.5±0.8)×10 -5, where the first uncertainty is statistical… CONTINUE READING

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Measurements of the S-wave fraction in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction

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