Measurement of the B¯0–B0 and B¯s0–Bs0 production asymmetries in pp collisions at s=7 TeV
R. Aaij,B. Adeva,M. Adinolfi,A. Affolder,Z. Ajaltouni,S. Akar,J. Albrecht,F. Alessio,M. Alexander,S. Ali,G. Alkhazov,P. Alvarez Cartelle,A.A. Alves, Jr.,S. Amato,S. Amerio,Y. Amhis,L. An,L. Anderlini,J. Anderson,R. Andreassen,M. Andreotti,J.E. Andrews,R.B. Appleby,O. Aquines Gutierrez,F. Archilli,A. Artamonov,M. Artuso,E. Aslanides,G. Auriemma,M. Baalouch,S. Bachmann,J.J. Back,A. Badalov,W. Baldini,R.J. Barlow,C. Barschel,S. Barsuk,W. Barter,V. Batozskaya,V. Battista,A. Bay,L. Beaucourt,J. Beddow,F. Bedeschi,I. Bediaga,S. Belogurov,K. Belous,I. Belyaev,E. Ben-Haim,G. Bencivenni,S. Benson,J. Benton,A. Berezhnoy,R. Bernet,M.-O. Bettler,M. van Beuzekom,A. Bien,S. Bifani,T. Bird,A. Bizzeti,P.M. Bjørnstad,T. Blake,F. Blanc,J. Blouw,S. Blusk,V. Bocci,A. Bondar,N. Bondar,W. Bonivento,S. Borghi,A. Borgia,M. Borsato,T.J.V. Bowcock,E. Bowen,C. Bozzi,T. Brambach,J. van den Brand,J. Bressieux,D. Brett,M. Britsch,T. Britton,J. Brodzicka,N.H. Brook,H. Brown,A. Bursche,G. Busetto,J. Buytaert,S. Cadeddu,R. Calabrese,M. Calvi,M. Calvo Gomez,P. Campana,D. Campora Perez,A. Carbone,G. Carboni,R. Cardinale, A. Cardini,L. Carson,K. Carvalho Akiba,G. Casse,L. Cassina,L. Castillo Garcia,M. Cattaneo,Ch. Cauet,R. Cenci,M. Charles,Ph. Charpentier,M. Chefdeville,S. Chen,S.-F. Cheung,N. Chiapolini,M. Chrzaszcz,K. Ciba,X. Cid Vidal,G. Ciezarek,P.E.L. Clarke,M. Clemencic,H.V. Cliff,J. Closier,V. Coco,J. Cogan,E. Cogneras,L. Cojocariu,P. Collins,A. Comerma-Montells,A. Contu,A. Cook,M. Coombes,S. Coquereau,G. Corti,M. Corvo,I. Counts,B. Couturier,G.A. Cowan,D.C. Craik,M. Cruz Torres,S. Cunliffe,R. Currie,C. D'Ambrosio,J. Dalseno,P. David,P.N.Y. David,A. Davis,K. De Bruyn,S. De Capua,M. De Cian,J.M. De Miranda,L. De Paula,W. De Silva,P. De Simone,D. Decamp,M. Deckenhoff,L. Del Buono,N. Déléage,D. Derkach,O. Deschamps,F. Dettori,A. Di Canto,H. Dijkstra,S. Donleavy,F. Dordei,M. Dorigo,A. Dosil Suárez,D. Dossett,A. Dovbnya,K. Dreimanis,G. Dujany,F. Dupertuis,P. Durante,R. Dzhelyadin,A. Dziurda,A. Dzyuba,S. Easo,U. Egede,V. Egorychev,S. Eidelman,S. Eisenhardt,U. Eitschberger,R. Ekelhof,L. Eklund,I. El Rifai,Ch. Elsasser,S. Ely,S. Esen,H.-M. Evans,T. Evans,A. Falabella,C. Färber,C. Farinelli,N. Farley,S. Farry,R.F. Fay,D. Ferguson,V. Fernandez Albor,F. Ferreira Rodrigues,M. Ferro-Luzzi,S. Filippov,M. Fiore,M. Fiorini,M. Firlej,C. Fitzpatrick,T. Fiutowski,M. Fontana,F. Fontanelli,R. Forty,O. Francisco,M. Frank,C. Frei,M. Frosini,J. Fu,E. Furfaro,A. Gallas Torreira,D. Galli,S. Gallorini,S. Gambetta,M. Gandelman,P. Gandini,Y. Gao,J. García Pardiñas,J. Garofoli,J. Garra Tico,L. Garrido,C. Gaspar,R. Gauld,L. Gavardi,G. Gavrilov,A. Geraci,E. Gersabeck,M. Gersabeck,T. Gershon,Ph. Ghez,A. Gianelle,S. Giani',V. Gibson,L. Giubega,V.V. Gligorov,C. Göbel,D. Golubkov,A. Golutvin,A. Gomes,C. Gotti,M. Grabalosa Gándara,R. Graciani Diaz,L.A. Granado Cardoso,E. Graugés,G. Graziani,A. Grecu,E. Greening,S. Gregson,P. Griffith,L. Grillo,O. Grünberg,B. Gui,E. Gushchin,Yu. Guz,T. Gys,C. Hadjivasiliou,G. Haefeli,C. Haen,S.C. Haines,S. Hall,B. Hamilton,T. Hampson,X. Han,S. Hansmann-Menzemer,N. Harnew,S.T. Harnew,J. Harrison,J. He,T. Head,V. Heijne,K. Hennessy,P. Henrard,L. Henry,J.A. Hernando Morata,E. van Herwijnen,M. Heß,A. Hicheur,D. Hill,M. Hoballah,C. Hombach,W. Hulsbergen,P. Hunt,N. Hussain,D. Hutchcroft,D. Hynds,M. Idzik,P. Ilten,R. Jacobsson,A. Jaeger,J. Jalocha,E. Jans,P. Jaton,A. Jawahery,F. Jing,M. John,D. Johnson,C.R. Jones,C. Joram,B. Jost,N. Jurik,M. Kaballo,S. Kandybei,W. Kanso,M. Karacson,T.M. Karbach,S. Karodia,M. Kelsey,I.R. Kenyon,T. Ketel,B. Khanji,C. Khurewathanakul,S. Klaver,K. Klimaszewski,O. Kochebina,M. Kolpin,I. Komarov,R.F. Koopman,P. Koppenburg,M. Korolev,A. Kozlinskiy,L. Kravchuk,K. Kreplin,M. Kreps,G. Krocker,P. Krokovny,F. Kruse,W. Kucewicz,M. Kucharczyk,V. Kudryavtsev,K. Kurek,T. Kvaratskheliya,V.N. La Thi,D. Lacarrere,G. Lafferty,A. Lai,D. Lambert,R.W. Lambert,G. Lanfranchi,C. Langenbruch,B. Langhans,T. Latham,C. Lazzeroni,R. 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Wilkinson,M.P. Williams,M. Williams,F.F. Wilson,J. Wimberley,J. Wishahi,W. Wislicki,M. Witek,G. Wormser,S.A. Wotton,S. Wright,S. Wu,K. Wyllie,Y. Xie,Z. Xing,Z. Xu,Z. Yang,X. Yuan,O. Yushchenko,M. Zangoli,M. Zavertyaev, L. Zhang,W.C. Zhang,Y. Zhang,A. Zhelezov,A. Zhokhov,L. Zhong,A. Zvyagin
Physics Letters B（2014）
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Abstract
The B¯0–B0 and B¯s0–Bs0 production asymmetries, AP(B0) and AP(Bs0), are measured by means of a time-dependent analysis of B0→J/ψK⁎0, B0→D−π+ and Bs0→Ds−π+ decays, using a data sample corresponding to an integrated luminosity of 1.0 fb−1, collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B0 and Bs0 mesons within the LHCb acceptance. The production asymmetries, integrated over pT and η in the range 4
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