Measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0
R. Aaij,C. Abellan Beteta, B. Adeva,M. Adinolfi, C. A. Aidala, Z. Ajaltouni,S. Akar,P. Albicocco,J. Albrecht, F. Alessio, M. Alexander,A. Alfonso Albero, G. Alkhazov,P. Alvarez Cartelle,Jr. Alves A. A.,S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti,J. E. Andrews,F. Archilli, P. d'Argent,J. Arnau Romeu, A. Artamonov,M. Artuso, K. Arzymatov, E. Aslanides,M. Atzeni, B. Audurier,S. Bachmann, J. J. Back, S. Baker,V. Balagura,W. Baldini,A. Baranov,R. J. Barlow,G. C. Barrand, S. Barsuk,W. Barter,M. Bartolini,F. baryshnikov, V. Batozskaya, B. Batsukh, A. Battig, V. Battista, A. Bay, J. Beddow,F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel,S. Belin,N. Beliy, V. Bellee, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson,S. Beranek,A. Berezhnoy, R. Bernet, D. Berninghoff, E. Bertholet, A. Bertolin,C. Betancourt,F. Betti,M. O. Bettler,M. van Beuzekom,Ia. Bezshyiko,S. Bhasin, J. Bhom,S. Bifani, P. Billoir, A. Birnkraut, A. Bizzeti,M. Bjorn,M. P. Blago,T. Blake,F. Blanc,S. Blusk, D. Bobulska,V. Bocci,O. Boente Garcia, T. Boettcher,A. Bondar, N. Bondar, S. Borghi,M. Borisyak,M. Borsato, F. Bossu,M. Boubdir,T. J. V. Bowcock,C. Bozzi,S. Braun, M. Brodski, J. Brodzicka,A. Brossa Gonzalo,D. Brundu, E. Buchanan, A. Buonaura,C. Burr, A. Bursche, J. Buytaert,W. Byczynski,S. Cadeddu,H. Cai,R. Calabrese, R. Calladine, M. Calvi,M. Calvo Gomez,A. Camboni,P. Campana,D. H. Campora Perez,L. Capriotti,A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti,K. Carvalho Akiba,G. Casse, L. Cassina,M. Cattaneo, G. Cavallero, R. Cenci,D. Chamont,M. G. Chapman,M. Charles,Ph. Charpentier,G. Chatzikonstantinidis, M. Chefdeville,V. Chekalina,C. Chen,S. Chen,S. -G. Chitic,V. Chobanova, M. Chrzaszcz, A. Chubykin, P. Ciambrone,X. Cid Vidal, G. Ciezarek,F. Cindolo, P. E. L. Clarke, M. Clemencic, H. V. Cliff, J. Closier,V. Coco, J. A. B. Coelho,J. Cogan, E. Cogneras,L. Cojocariu,P. Collins, T. Colombo, A. Comerma-Montells,A. Contu,G. Coombs, S. Coquereau,G. Corti,M. Corvo,C. M. Costa Sobral, B. Couturier,G. A. Cowan,D. C. Craik, A. Crocombe,M. Cruz Torres,R. Currie, C. D'Ambrosio,F. Da Cunha Marinho,C. L. Da Silva,E. Dall'Occo, J. Dalseno, A. Danilina,A. Davis,O. De Aguiar Francisco,K. De Bruyn,S. De Capua,M. De Cian,J. M. De Miranda,L. De Paula,M. De Serio,P. De Simone,C. T. Dean, D. Decamp,L. Del Buono,B. Delaney,H. -P. Dembinski,M. Demmer, A. Dendek,D. Derkach, O. Deschamps, F. Desse,F. Dettori,B. Dey,A. Di Canto,P. Di Nezza,S. Didenko,H. Dijkstra,F. Dordei,M. Dorigo,A. Dosil Suarez, L. Douglas, A. Dovbnya, K. Dreimanis,L. Dufour, G. Dujany, P. Durante,J. M. Durham,D. Dutta, R. Dzhelyadin,M. Dziewiecki,A. Dziurda, A. Dzyuba, S. Easo,U. Egede,V. Egorychev,S. Eidelman,S. Eisenhardt, U. Eitschberger, R. Ekelhof, L. Eklund,S. Ely, A. Ene,S. Escher,S. Esen,T. Evans, A. Falabella, N. Farley, S. Farry,D. Fazzini,P. Fernandez Declara,A. Fernandez Prieto,F. Ferrari,L. Ferreira Lopes,F. Ferreira Rodrigues, M. Ferro-Luzzi,S. 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PHYSICAL REVIEW D（2020）
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摘要
A measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0 is performed using proton- proton - collision data corresponding to an integrated luminosity of 5 fb(-1) collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(B-s(0) -> (KSKS0)-K-0) = [8.3 +/- 1.6(stat) +/- 0.9(syst) +/- 0.8(norm) +/- 0.3(f(s)/f(d))] x 10(-6), where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B-0 -> phi K(S)(0 )and the ratio of hadronization fractions f(s)/f(d). This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B-s(0) -> (KSKS0)-K-0 is performed relative to that of the B-s(0) -> (KSKS0)-K-0 channel, and is found to be B(B-s(0) -> (KSKS0)-K-0)/B(B-s(0) -> (KSKS0)-K-0) = [7.5 +/- 3.1(stat) 0.5(syst) +/- 0.3(f(s)/f(d))1 x 10(-2).
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