Search for B s 0 → μ + μ - and B 0 → μ + μ - decays with the full CDF run II data set

T Aaltonen,S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, J A Appel,T Arisawa,A Artikov,J Asaadi,W Ashmanskas,B Auerbach,A Aurisano,F Azfar,W Badgett, T Bae, A Barbarogaltieri, V E Barnes, B A Barnett,P Barria,P Bartos,M Bauce, F Bedeschi,S Behari, G Bellettini,J Bellinger,D Benjamin, A Beretvas,A Bhatti,K R Bland,B Blumenfeld, A Bocci,A Bodek,D Bortoletto,J Boudreau, A Boveia, L Brigliadori, C Bromberg,E Brucken,J Budagov,H S Budd, K Burkett,G Busetto, P Bussey,P Butti,A Buzatu,A Calamba,S Camarda,Manuela Campanelli, F Canelli,B Carls, D Carlsmith,R Carosi,S Carrillo,B Casal, M Casarsa,Andrea Castro,P Catastini, D Cauz,V Cavaliere, M Cavallisforza,A Cerri, L Cerrito,Y Chen, M Chertok,G Chiarelli,G Chlachidze, K Cho,D Chokheli,M A Ciocci, A Clark,C Clarke,M R Convery,J Conway,M Corbo,M Cordelli,C A Cox,D J Cox, M Cremonesi,D Cruz,J Cuevas,R Culbertson, N D Ascenzo,M Datta,P De Barbaro, L Demortier, M Deninno,F Devoto,M D Errico,A Di Canto,B Di Ruzza,J R Dittmann, M D Onofrio,S Donati,M Dorigo, A Driutti,K Ebina, Ryan Christopher Edgar,A Elagin, R Erbacher, S Errede, B Esham, R Eusebi,S Farrington,J Fernandez Ramos, R D Field, G Flanagan,R Forrest,Matthew Franklin, J Freeman, H Frisch,Y Funakoshi,A F Garfinkel,P Garosi,H Gerberich,E Gerchtein, S Giagu, V Giakoumopoulou,Kevin F Gibson, C M Ginsburg, N Giokaris,P Giromini, G Giurgiu,V Glagolev,D Glenzinski,M Gold, D Goldin,A Golossanov,G Gomez, G Gomezceballos,M Goncharov,O Gonzalez Lopez,I Gorelov, A T Goshaw, K Goulianos, E Gramellini, S Grinstein,C Grossopilcher,J Guimaraes Da Costa,Seungyong Hahn,J Han,F Happacher, K Hara,M Hare, R F Harr,T Harringtontaber, K Hatakeyama,C Hays,J Heinrich,M Herndon,A Hocker,Z Hong, W Hopkins,S Hou, R E Hughes,U Husemann, J Huston, G Introzzi,M Iori, A Ivanov, E James,D Jang,B Jayatilaka,Eunseok Jeon, S Jindariani,M Jones,Keehyoung Joo,Sy Jun, T R Junk,M Kambeitz,T Kamon, P E Karchin,A Kasmi,Yukio Kato,W Ketchum,J Keung, B Kilminster,Dongsup Kim, Hyungcheol Kim, Jinwoo Kim,Mina Kim,Sunghyun Kim, Yunhee Kim, N Kimura,M H Kirby,K J Knoepfel,K Kondo,Dan Kong,J Konigsberg, A V Kotwal,M Kreps, J Kroll, M Kruse, T Kuhr, M Kurata, A T Laasanen,S Lammel,M Lancaster,K Lannon,G Latino,H Lee,J Lee, S Leo, S Leone,J D Lewis, A Limosani, E Lipeles,Hong Liu,Qingquan Liu,T Liu,S Lockwitz, A Loginov,D Lucchesi,J Lueck, P Lujan,P Lukens, G Lungu,J Lys,R Lysak,R Madrak, P Maestro, S Malik,G Manca, A Manousakiskatsikakis,F Margaroli,Perfecto Marino, M Martinez,K Matera,M E Mattson,A Mazzacane,P Mazzanti,R Mcnulty,Andrew Mehta,P Mehtala, C Mesropian, T Miao,D Mietlicki,A Mitra,Hiroyuki Miyake,S Moed,N Moggi,Chulso Moon,R Moore,M J Morello, A Mukherjee,Th Muller,P Murat,M Mussini, J Nachtman,Y Nagai,J Naganoma, I Nakano,A Napier,J Nett, C Neu,T Nigmanov,L Nodulman, Seunghyun Noh,O Norniella,L Oakes,S Oh,Yeonmok Oh,I Oksuzian,T Okusawa, R Orava,L Ortolan,C Pagliarone,E Palencia,P Palni,V Papadimitriou,W Parker,G Pauletta, M Paulini, C Paus,T J Phillips,G Piacentino,E Pianori,J Pilot, K Pitts, C Plager,L Pondrom,S Poprocki,K Potamianos, F Prokoshin,A Pranko,F Ptohos, G Punzi,N Ranjan,I Redondo Fernandez,P Renton, M Rescigno,T Riddick,F Rimondi, L Ristori, A Robson,T Rodriguez, S Rolli,M Ronzani, R Roser,Jonathan L Rosner,F Ruffini,A Ruiz, J Russ,V Rusu,A Safonov,W K Sakumoto,Yoshinori Sakurai,L Santi,Kazuya Sato,V Saveliev, A Savoynavarro,P Schlabach,E E Schmidt, T Schwarz, L Scodellaro, F Scuri, S Seidel, Y Seiya,A Semenov,F Sforza,S Z Shalhout,T Shears,P F Shepard, M Shimojima, M Shochet,I Shreybertecker,A Simonenko, P Sinervo,K Sliwa,J R Smith,F D Snider,V Sorin,Hongyeop Song, D Sperka,M Stancari,R St Denis, B Stelzer, O Stelzerchilton,D Stentz, J Strologas,Y Sudo,A Sukhanov,I Suslov,K Takemasa,Y Takeuchi,J Tang,M Tecchio,Pingkun Teng,J Thom,E Thomson,V Thukral, D Toback, S Tokar, K Tollefson,T Tomura,D Tonelli,S Torre,D Torretta,P Totaro,M Trovato, F Ukegawa,S Uozumi,F Vazquez,G Velev,C Vellidis,Caterina Vernieri,M Vidal,R Vilar, J Vizan,M Vogel,G Volpi, Patricia Wagner,R Wallny, Sanbin Wang, A Warburton, D Waters,W C Wester, D Whiteson, A B Wicklund,S Wilbur,H H Williams, J R Wilson,P Wilson, B L Winer, P Wittich,S Wolbers,H Wolfe,Teresa L Wright,X Wu,Z Wu,K Yamamoto,D Yamato,T Yang,Unki Yang,Yong Yang,W M Yao,Gengchang Yeh, K Yi,J Yoh, K Yorita,Tsuyoshi Yoshida, G Yu, I Yu, A Zanetti,Yong Zeng,C Zhou,S Zucchelli

PHYSICAL REVIEW D（2013）

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摘要

We report on a search for B-s(0) -> mu(+)mu(-) and B-0 -> mu(+)mu(-) decays using proton-antiproton collision data at root s = 1.96 TeV corresponding to 10 fb(-1) of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B-0 candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of B(B-0 -> mu(+)mu(-)) < 4.6 x 10(-9) at 95% confidence level. We observe an excess of B-s(0) candidates. The probability that the background processes alone could produce such an excess or larger is 0.94%. The probability that the combination of background and the expected standard model rate of B-s(0) -> mu(+)mu(-) could produce such an excess or larger is 6.8%. These data are used to determine a branching fraction B(B-s(0) -> mu(+)mu(-)) = (1.3(-0.7)(+0.9) x 10(-8) and provide an upper limit of B(B-s(0) -> mu(+)mu(-)) < 3.1 x 10(-8) at 95% confidence level. DOI: 10.1103/PhysRevD.87.072003

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