Measurements of the branching fractions of Lambda(+)(c) -> p pi(-)pi(+), Lambda(+)(c) -> pK(-)K(+), and Lambda(+)(c) -> p pi K--(+)
R. Aaij,Bernardo Adeva,M. Adinolfi, Z. Ajaltouni,S. Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero,S. Ali, G. Alkhazov,P. Alvarez Cartelle, A. A. Alves,S. Amato,S. Amerio,Y. Amhis, L. An, L. Anderlini, G. Andreassi,M. Andreotti,J. E. Andrews,R. B. Appleby,F. Archilli, Philippe d'Argent,J. Arnau Romeu, A. Artamonov,M. Artuso, E. Aslanides,G. Auriemma,M. Baalouch,I. Babuschkin,S. Bachmann, J. J. Back, A Badalovm,C. Baesso, S. Baker, Balagura,W. Baldini,A. Baranov, R. J. Barlow, C. Barsche, S. Barsuk,W. Barter,F. Baryshnikov, Batozskaya, Battista, A. Bay,L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel,N. Beliy, Bellee, N. Bellolii, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson,S. Beranek, A. Berezhnoy, R. Bernet, Daniel Berninghoff, Emilie Bertholet, A. Bertolin, C. Betancourt, F. Betti,M. O. Bettler,M. van Beuzekom,Ia. Bershyiko,S. Bifani, P. Billoir, A. Birnkraut, A. Bitadze, A. Bizzeti,Mikkel Bjørn,T. Blake,F. Blanc, J. Blouwt,S. Blusk, Bocci, T. Boettcher, A. Bondarw, N. Bondar,W. Bonivento,I. Bordyuzhin, A. Borgheresi, S. Borghi, M. Borisyak, M. Borsato, F. Bossu, M. Boubdir,T. J. V. Bowcock, E. Bowen,C. Bozzi,S. Braun,T. Britton, J. Brodzicka, Davide Brundu, E. Buchanan,C. Burr, A. Burschef, J. Buytaert, Wiktor Byczynski,S. Cadeddu,H. Cai,R. Calabrese, Ryan Calladine, M. Calvi,M. Calvo Gomez, A. Camboni,P. Campana,D. Campora Perez, L. Capriotti,A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti,L. Carson,K. Carvalho Akiba,G. Casse, L. Cassina,L. Castillo Garcia,M. Cattaneo, G. Cavallero, R. Cenci,D. Chamont, Matthew George Chapman,M. J. Charles,Ph. Charpentier,G. Chatzikonstantinidis, M. Chefdeville,S. Chen,S. F. Cheung,S-G Chitic, Chobanova, M. Chrzaszcz, P. Ciambrone,X. Cid Vidal, G. Ciezarek, P. E. L. Clarke, M. Clemencic, H. V. Cliff, J. Closier,J. Cogan, E. Cogneras, Cogoni, L. Cojocariu,P. Collins, T. Colombo, A. Comerma-Montells, A. Contu,A. Cook,G. Coombs, S. Coquereau,G. Corti, M. 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J. Tilley, Tisserand,M. Tobin, S. Tolk, L. Tomassetti,D. Tonelli,F. Toriello, R. Tourinho Jadallah Aoudel, E. Tournefier, M. Traill, M. T. Tran,M. Tresch, A. Trisovic, A. Tsaregorodtsev, P. Tsopelas, A. Tully, N. Tuning, A. Ukleja, Andrii Usachov,A. Ustyuzhanin,U. Uwer, C. Vacca,Alexander Vagner, Vagnoni,A. Valassi,S. Valat, G. Valenti,R. Vazquez Gomez,P. Vazquez Regueiro,S. Vecchi,M. van Veghel,J. J. Velthuis, M. Veltri,G. Veneziano,A. Venkateswaran,T. Verlage,M. Vernet, M. Vesterinen,J. V. Viana Barbosa,B. Viaud, D. Vieira,M. Vieites Diaz, H. Viemann,X. Vilasis-Cardona, M. Vitti, Volkov, A Vollhrdt, B. Voneki, A. Vorobyev, Vorobyev,C. Voss,J. A. de Vries,C. Vázquez Sierra, R. Waldi,C. Wallace,R. Wallace, J. Walsh, J. Wang,Ward,H. M. Wark, N. K. Watson, D. Websdale, A. Weiden,M. Whitehead, J. Wicht,G. Wilkinson,M. Wilkinson,M. Williams,M. P. Williams,T. Williams, F. F. Wilson, J. Wimberley, M. Winn, J. Wishahi,W. Wislicki,M. Witek, G. Wormser,S. A. Wotton, K. Wraight, K. Wyllie, Y. Xie,Z. Xu,Z. Yang,Y. Yao, H. Yin,J. Yu,X. Yuan, O. Yushchenko,K. A. Zarebski, M. Zavertyaev,L. Zhang,Y. Zhang, A. Zhelezov, Y. Zheng, X. L. Zhu, Zhukov, Jennifer Brigitta Zonneveld,S. Zucchelli
Journal of High Energy Physics（2018）
引用 23|浏览37
摘要
The ratios of the branching fractions of the decays do Lambda(+)(c) -u003e , p pi(-)pi(+), Lambda(+-u003e)(c) pK(-)K(+), and Lambda(+)(c) -u003e p pi K--(+) with respect to the Cabibbo-favoured Lambda(+)(c) -u003e pK(-)pi(+) decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb(-1): B(Lambda(+)(c) -u003e p pi(-)pi(+))/B(Lambda(+)(c) -u003e pK(-)pi(+)) = (7.44 +/- 0.08 +/- 0.18)%. B(Lambda(+)(c) -u003e pK(-)K(+))/B(Lambda(+)(c) -u003e pK(-)pi(+) = (1.70 +/- 0.03 +/- 0.03)%, B(Lambda(+)(c) -u003e p pi(-)pi K-+(+))/B(Lambda(+)(c) -u003e pK(-)pi(+) = (0.165 +/- 0.015 +/- 0.005)%, where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world average value for B(Lambda(+)(c) -u003e p pi(-)pi(+)), the corresponding branching fractions are B(Lambda(+)(c) -u003e p pi(-)pi(+) = (4.72 +/- 0.05 +/- 0.11 +/- 0.25) x 10(-3), B(Lambda(+)(c) -u003e pK(-)K(+)) = (1.08 +/- 0.02 +/- 0.02 +/- 0.06) x 10(-3), B(Lambda(+)(c) -u003e , p pi K--(+)) = (1.04 +/- 0.09 +/- 0.03 +/- 0.05) x 10(-4), where the final uncertainty is due to B(Lambda(+)(c) -u003e pK(-)pi(+)).
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