Measurement Of The Forward-Backward Asymmetry In The Production Of B-+/- Mesons In P(P)Over-Bar Collisions At Root S=1.96 Tev V M Abazov , B Abbott , B S Acharya , M Adams , T Adams , J P Agnew , G D Alexeev , G Alkhazov , A Alton , A Askew , S Atkins , K Augsten , C Avila , F Badaud , L Bagby , B Baldin , D V Bandurin , S Banerjee , E Barberis , P Baringer , J F Bartlett , U Bassler , V E Bazterra , A Bean , M Begalli , L Bellantoni , S B Beri , G Bernardi , R Bernhard , I Bertram , M Besancon , R Beuselinck , P C Bhat , S Bhatia , V Bhatnagar , G Blazey , S Blessing , K Bloom , A Boehnlein , D Boline , E E Boos , G Borissov , M Borysova , A Brandt , O Brandt , R Brock , A Bross , D N Brown , X B Bu , M Buehler , V Buescher , V Bunichev , S Burdin , C P Buszello , E Camachoperez , B C K Casey , H Castillavaldez , S Caughron , S Chakrabarti , K M Chan , A Chandra , E Chapon , Guisheng Chen , S W Cho , S Choi , B Choudhary , S Cihangir , D Claes , J Clutter , M Cooke , W E Cooper , M Corcoran , F Couderc , M C Cousinou , D Cutts , Amitabha Das , G Davies , S J De Jong , E De La Cruzburelo , F Deliot , R Demina , D Denisov , S P Denisov , S Desai , C Deterre , K Devaughan , H T Diehl , M Diesburg , P F Ding , A Dominguez , A Dubey , L V Dudko , A Duperrin , S Dutt , M Eads , D Edmunds , J Ellison , V D Elvira , Y Enari , H Evans , V N Evdokimov , A Faure , Liang Feng , T Ferbel , F Fiedler , F Filthaut , W Fisher , H E Fisk , M Fortner , H Fox , S Fuess , P H Garbincius , A Garciabellido , J A Garciagonzalez , V Gavrilov , W Geng , C E Gerber , Y Gershtein , G Ginther , O Gogota , G Golovanov , P D Grannis , S Greder , H Greenlee , G Grenier , Ph Gris , J F Grivaz , A Grohsjean , S Gruenendahl , M W Gruenewald , T Guillemin , G Gutierrez , P Gutierrez , J Haley , L Han , K Harder , A Harel , J M Hauptman , J Hays , T Head , T Hebbeker , D Hedin , Hatim Hegab , A P Heinson , U Heintz , C Hensel , I Herediade La Cruz , K Herner , G Hesketh , M D Hildreth , R Hirosky , T Hoang , J D Hobbs , B Hoeneisen , John T Hogan , M Hohlfeld , J L Holzbauer , I Howley , Z Hubacek , V Hynek , I Iashvili , Y Ilchenko , R Illingworth , A S Ito , S Jabeen , M Jaffre , A Jayasinghe , M S Jeong , R Jesik , Peng Jiang , K Johns , E D Johnson , Mark D Johnson , A Jonckheere , P Jonsson , J Joshi , A W Jung , A Juste , E Kajfasz , D Karmanov , I Katsanos , M Kaur , R Kehoe , S Kermiche , N Khalatyan , A Khanov , A Kharchilava , Y N Kharzheev , I Kiselevich , J M Kohli , A V Kozelov , J Kraus , Ajay Kumar , A Kupco , T Kurca , V A Kuzmin , S Lammers , P Lebrun , Howard Shihjen Lee , S W Lee , W M Lee , X Lei , J Lellouch , Dawei Li , Huijun Li , Ling Li , Q Z Li , J K Lim , D Lincoln , J Linnemann , V V Lipaev , R Lipton , Hailong Liu , Yue Liu , A Lobodenko , M Lokajicek , R Lopes De Sa , R Lunagarcia , A L Lyon , A K A Maciel , R Madar , R Maganavillalba , Sudip Malik , V L Malyshev , Jason Mansour , J Martinezortega , R Mccarthy , C L Mcgivern , M M Meijer , A Melnitchouk , D Menezes , P G Mercadante , M Merkin , A Meyer , Jeanpierre Meyer , F Miconi , N K Mondal , M Mulhearn , E Nagy , M Narain , R Nayyar , H A Neal , J P Negret , P Neustroev , H T Nguyen , T Nunnemann , J Orduna , N Osman , J Osta , A Pal , N Parashar , V Parihar , S K Park , R Partridge , N Parua , A Patwa , B Penning , M Perfilov , Y Peters , K Petridis , G Petrillo , P Petroff , M A Pleier , V M Podstavkov , A V Popov , M Prewitt , D Price , N Prokopenko , J Qian , A Quadt , B Quinn , P N Ratoff , I Razumov , I Rippbaudot , F Rizatdinova , M Rominsky , Alan D Ross , C Royon , P Rubinov , R Ruchti , G Sajot , A Sanchezhernandez , M P Sanders , A S Santos , G Savage , M Savitskyi , L Sawyer , T Scanlon , R D Schamberger , Y Scheglov , H Schellman , C Schwanenberger , R Schwienhorst , J Sekaric , H Severini , E Shabalina , V Shary , S Shaw , A A Shchukin , V Simak , P Skubic , P Slattery , D Smirnov , G R Snow , J Snow , Solomon H Snyder , S Soeldnerrembold , L Sonnenschein , K Soustruznik , Jan Stark , D A Stoyanova , M Strauss , L Suter , P Svoisky , M Titov , V V Tokmenin , Y T Tsai , D Tsybychev , B Tuchming , C Tully , L Uvarov , S Uvarov , S Uzunyan , R Van Kooten , W M Van Leeuwen , N Varelas , E W Varnes , I A Vasilyev , A Y Verkheev , L S Vertogradov , M Verzocchi , M Vesterinen , D Vilanova , P Vokac , H D Wahl , M H L S Wang , J Warchol , G Watts , M Wayne , J Weichert , L Weltyrieger , M R J Williams , G W Wilson , M Wobisch , D R Wood , T R Wyatt , Y Xie , R Yamada , Siqi Yang , T Yasuda , Y A Yatsunenko , W Ye , Z Ye , H Yin , K Yip , S W Youn , J M Yu , J Zennamo , T G Zhao , Bing Zhou , Jiaying Zhu , M Zielinski , D Zieminska , L Zivkovic PHYSICAL REVIEW LETTERS（2015）
摘要
We present a measurement of the forward-backward asymmetry in the production of B-+/- mesons, A(FB)(B-+/-) using B-+/- -> J/ Psi K-+/- decays in 10.4 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the D0 experiment during Run II of the Tevatron collider. A nonzero asymmetry would indicate a preference for a particular flavor, i.e., b quark or (b) over bar antiquark, to be produced in the direction of the proton beam. We extract A(FB) (B-+/-) from a maximum likelihood fit to the difference between the numbers of forward-and backward-produced B-+/- mesons. We measure an asymmetry consistent with zero: A(FB) (B-+/-) = [-0.24 +/- 0.41 (stat) +/- 0.19 (syst)] %.
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