First measurement of time-dependent CP violation in $ B_s^0\to K^+K^- $ decays

Aaij, R; 41 Adeva, B; 37 Adinolfi, M; 46 Adrover, C; 6 Affolder A,; 52 Ajaltouni, Z; 5 Albrecht J,; 9 Alessio F,; 38 Alexander, M; 51 Ali, S; 41 Alkhazov, G; 29 Cartelle PA,; 37 Alves Junior Antonio Augusto 24, 38 Amato S; 2 Amerio Silvia 21 Amhis Y,; 7 Anderlini Lucio 17 Anderson J,; 40 Andreassen, R; 57 Andrews JE,; 58 Appleby RB,; 54 Gutierrez OA,; 10 Archilli Flavio 18 Artamonov, A; 35 Artuso, M; 59 Aslanides, E; 6 Auriemma Giulio 24 Baalouch M,; 5 Bachmann S,; 11 Back JJ,; 48 Baesso, C; 60 Balagura, V; 30 Baldini Wander 16 Barlow RJ,; 54 Barsche, C; 38 Barsuk, S; 7 Barter W,; 47 Bauer, T; 41 Bay, A; 39 Beddow, J; 51 Bedeschi Franco 22 Bediagal, I; 1 Belogurov S,; 30 Belous, K; 35 Belyaev, I; 30 Ben Haim, E; 8 Bencivenni Giovanni 18 Benson S,; 50 Benton, J; 46 Berezhnoy, A; 31 Bernet, R; 40 Bettler MO,; 47 van Beuzekom, M; 41 Bien, A; 11 Bifani, S; 45 Bird, T; 54 Bizzeti Andrea 17 Bjornstad PM,; 54 Blake, T; 38 Blanc, F; 39 Blouw, J; 11 Blusk, S; 59 Bocci Valerio 24 Bondar, A; 34 Bondar N, 33; 29 Bonivento Walter 15 Borghi, S; 54 Borgia, A; 59 Bowcock TJV,; 52 Bowen, E; 40 Bozzi Concezio 16 Brambach, T; 9 van den Brand J,; 42 Bressieux J, 41; 39 Brett, D; 54 Britsch, M; 10 Britton, T; 59 Brook NH,; 46 Brown, H; 52 Burducea, I; 28 Bursche, A; 40 Busetto Giovanni 21 Buytaert, J; 38 Cadeddu Sandro 15 Callot, O; 7 Calvi Marta 20 Gomez MC,; 36 Camboni, A; 36 Campana Pierluigi 18, 38 Perez DC; 38 Carbone Angelo 14 Carboni Giovanni 23 Cardinale Roberta 19 Cardini Alessandro 15 Carranza Mejia, H; 50 Carson, L; 53 Akiba KC,; 2 Casse G,; 52 Garcia LC,; 38 Cattaneo, M; 38 Cauet, C; 9 Cenci Riccardo 58 Charles M,; 55 Charpentier, P; 38 Chen, P; 39 Chiapolini N, 3; 40 Chrzaszcz, M; 25 Ciba, K; 38 Vidal XC,; 38 Ciezarek, G; 53 Clarke PEL,; 50 Clemencic, M; 38 Cliff HV,; 47 Closier, J; 38 Coca, C; 28 Coco, V; 41 Cogan, J; 6 Cogneras E,; 5 Collins P,; 38 Comerma Montells, A; 36 Contu Andrea 15, 38 Cook A; 46 Coombes, M; 46 Coquereau, S; 8 Corti G,; 38 Couturier, B; 38 Cowan GA,; 50 Cowie, E; 46 Craik DC,; 48 Cunliffe, S; 53 Currie, R; 50 D'Ambrosio, C; 38 David, P; 8 David PNY,; 41 Davis, A; 57 De Bonis, I; 4 De Bruyn K,; 41 De Capua, S; 54 De Cian, M; 11 De Miranda JM,; 1 De Paula L,; 2 De Silva W,; 57 De Simone Patrizia 18 Decamp, D; 4 Deckenhoff M,; 9 Del Buono L,; 8 Deleage N,; 4 Derkach D,; 55 Deschamps, O; 5 Dettori F,; 42 Di Canton A, 41; 11 Dijkstra, H; 38 Dogaru, M; 28 Donleavy, S; 52 Dordei, F; 11 Suarez AD,; 37 Dossett, D; 48 Dovbnya, A; 43 Dupertuis, F; 39 Durante, P; 38 Dzhelyadin, R; 35 Dziurda, A; 25 Dzyuba, A; 29 Easo, S; 49 Egede, U; 53 Egorychev, V; 30 Eidelman, S; 34 van Eijk D, 33; 41 Eisenhardt, S; 50 Eitschberger, U; 9 Ekelhof R,; 9 Eklund L,; 51 El Rifai I, 38; 5 Elsasser C,; 40 Falabella Antonio 14 Farber, C; 11 Fardell, G; 50 Farinelli, C; 41 Farry, S; 52 Ferguson, D; 50 Albor VF,; 37 Rodrigues FF,; 1 Ferro Luzzi M,; 38 Filippov, S; 32 Fiore Marco 16 Fitzpatrick, C; 38 Fontana, M; 10 Fontanelli Flavio 19 Forty, R; 38 Francisco, O; 2 Frank M,; 38 Frei, C; 38 Frosini Maddalena 17 Furcas Sara 20 Furfaro Emiliano 23 Torreira AG,; 37 Galli Domenico 14 Gandelman, M; 2 Gandini P,; 59 Gao, Y; 3 Garofoli J,; 59 Garosi, P; 54 Tico JG,; 47 Garrido, L; 36 Gaspar, C; 38 Gauld, R; 55 Gersabeck, E; 11 Gersabeck, M; 54 Gershon, T; 48 Ghez P, 38; 4 Gibson V,; 47 Giubega, L; 28 Gligorov VV,; 38 Gobel, C; 60 Golubkov, D; 30 Golutvin, A; 38, 30; 53 Gomes, A; 2 Gorbounov P,; 38 Gordon H, 30; 38 Gotti Claudio 20 Gandara MG,; 5 Diaz RG,; 36 Cardoso LAG,; 38 Grauges, E; 36 Graziani Giacomo 17 Grecu, A; 28 Greening, E; 55 Gregson, S; 47 Griffith, P; 45 Grunberg, O; 61 Gui, B; 59 Gushchin, E; 32 Guz, Y; 38 Gys T, 35; 38 Hadjivasiliou, C; 59 Haefeli, G; 39 Haen, C; 38 Haines SC,; 47 Hall, S; 53 Hamilton, B; 58 Hampson, T; 46 Hansmann Menzemer, S; 11 Harnew, N; 55 Harnew ST,; 46 Harrison, J; 54 Hartmann, T; 61 He, J; 38 Head, T; 38 Heijne, V; 41 Hennessy, K; 52 Henrard, P; 5 Morata JAH,; 37 van Herwijnen, E; 38 Hess, M; 61 Hicheur, A; 1 Hicks E,; 52 Hill, D; 55 Hoballah, M; 5 Hombach C,; 54 Hopchev, P; 4 Hulsbergen W,; 41 Hunt, P; 55 Huse, T; 52 Hussain, N; 55 Hutchcroft, D; 52 Hynds, D; 51 Iakovenko, V; 44 Idzik, M; 26 Ilten, P; 12 Jacobsson, R; 38 Jaeger, A; 11 Jans, E; 41 Jaton, P; 39 Jawahery, A; 58 Jing, F; 3 John M,; 55 Johnson, D; 55 Jones CR,; 47 Joram, C; 38 Jost, B; 38 Kaballo, M; 9 Kandybei S,; 43 Kanso, W; 6 Karacson M,; 38 Karbach TM,; 38 Kenyon IR,; 45 Ketel, T; 42 Keune A, 41; 39 Khanji Basem 20 Kochebina, O; 7 Komarov I,; 39 Koopman RF,; 42 Koppenbure P, 41; 41 Korolev, M; 31 Kozlinskiy, A; 41 Kravchuk, L; 32 Kreplin, K; 11 Kreps, M; 48 Krocker, G; 11 Krokovny, P; 34 Kruse F, 33; 9 Kucharczyk Marcin 20, 25 Kudryavtsev V; 34 Kurek K, 33; 27 Kvaratskheliya, T; 38 La Thi VN, 30; 39 Lacarrere, D; 38 Lafferty, G; 54 Lai Adriano 15 Lambert, D; 50 Lambert RW,; 42 Lanciotti E, 41; 38 Lanfranchi Gaia 18 Langenbruch, C; 38 Latham, T; 48 Lazzeroni, C; 45 Le Gac, R; 6 van Leerdam J,; 41 Lees JP,; 4 Lefevre R,; 5 Leflat A,; 31 Lefrancois, J; 7 Leo Sabato 22 Leroy O,; 6 Lesiak T,; 25 Leverington, B; 11 Li, Y; 3 Li Gioi L,; 5 Liles M,; 52 Lindner, R; 38 Linn, C; 11 Liu, B; 3 Liu G,; 38 Lohn, S; 38 Longstaff, I; 51 Lopes JH,; 2 Lopez March N,; 39 Lu, H; 3 Lucchesi Donatella 21 Luisier J,; 39 Luo, H; 50 Machefert, F; 7 Machikhiliyan IV,; 30 Maciuc F, 4; 28 Maev, O; 38 Malde S, 29; 55 Manca Giulia 15 Mancinelli, G; 6 Maratas J,; 5 Marconi Umberto 14 Marino Pietro 22 Marki R,; 39 Marks, J; 11 Martellotti Giuseppe 24 Martens, A; 8 Sanchez AM,; 7 Martinelli M,; 41 Santos DM,; 42 Tostes DM, 41; 2 Martynov A,; 31 Massafferri, A; 1 Matev R,; 38 Mathe, Z; 38 Matteuzzi Clara 20 Maurice, E; 6 Mazurov Alexander 16,; 32,; 38 McCarthy, J; 45 McNab, A; 54 McNulty, R; 12 McSkelly, B; 52 Meadows, B; 57 Meier F, 55; 9 Meissner M,; 11 Merk, M; 41 Milanes DA,; 8 Minard MN,; 4 Rodriguez JM,; 60 Monteil, S; 5 Moran D,; 54 Morawski, P; 25 Morda, A; 6 Morello Michael Joseph 22 Mountain R,; 59 Mous, I; 41 Muheim, F; 50 Muller, K; 30 Muresan, R; 28 Muryn, B; 26 Muster, B; 39 Naik, P; 46 Nakada, T; 39 Nandakumar, R; 49 Nasteva, I; 1 Needham M,; 50 Neubert, S; 38 Neufeld, N; 38 Nguyen AD,; 39 Nguyen TD,; 39 Nguyen Mau, C; 39 Nicol, M; 7 Niess V,; 5 Niet R,; 9 Nikitin N,; 31 Nikodem, T; 11 Nomerotski, A; 55 Novoselov, A; 35 Oblakowska Mucha, A; 26 Obraztsov, V; 35 Oggero, S; 41 Ogilvy, S; 51 Okhrimenko, O; 44 Odeman, R; 15 Orlandea, M; 28 Goicochea JMO,; 2 Owen P,; 53 Oyanguren, A; 36 Pal BK,; 59 Palano Antimo 13 Palczewski, T; 27 Palutan Matteo 18 Panman, J; 38 Papanestis, A; 49 Pappagallo, M; 51 Parkes, C; 54 Parkinson CJ,; 53 Passaleva Giovanni 17 Patel GD,; 52 Patel, M; 53 Patrick GN,; 49 Patrignani Claudia 19 Pavel Nicorescu, C; 28 Alvarez AP,; 37 Pellegrino, A; 41 Penso Gianni 24 Altarelli MP,; 38 Perazzini Stefano 14 Trigo EP,; 37 Yzquierdo APC,; 36 Perret, P; 5 Perrin Terrin M,; 6 Pescatore L,; 45 Pesen, E; 62 Petridis, K; 53 Petrolini Alessandro 19 Phan, A; 59 Olloqui EP,; 36 Pietrzyk, B; 4 Pilar T,; 48 Pinci Davide 24 Playfer, S; 50 Casasus MP,; 37 Polci, F; 8 Polok G,; 25 Poluektov, A; 34, 33; 48 Polycarpo, E; 2 Popov A,; 35 Popov, D; 10 Popovici, B; 28 Potterat, C; 36 Powell, A; 55 Prisciandaro, J; 39 Pritchard, A; 52 Prouve, C; 7 Pugatch V,; 44 Navarro AP,; 39 Punzi Giovanni 22 Qian, W; 4 Rademacker JH,; 46 Rakotomiaramanana, B; 39 Rangel MS,; 2 Raniuk I,; 43 Rauschmayr, N; 38 Raven, G; 42 Redford S, 41; 55 Reid MM,; 48 dos Reis AC,; 1 Ricciardi S,; 49 Richards, A; 53 Rinnert, K; 52 Molina VR,; 36 Romero DAR,; 5 Robbe P,; 7 Roberts DA,; 58 Rodrigues, E; 54 Perez PR,; 37 Roiser, S; 38 Romanovsky, V; 35 Vidal AR,; 37 Rouvinet, J; 39 Ruf, T; 38 Ruffini Fabrizio 22 Ruiz, H; 36 Valls PR,; 36 Sabatino Giovanni 24 Silva JJS,; 37 Sagidova, N; 29 Sail, P; 51 Saitta Biagio 15 Guimaraes VS,; 2 Sedes BS,; 37 Sannino Mario 19 Santacesaria Roberta 24 Rios CS,; 37 Santovetti Emanuele 23 Sapunov, M; 6 Sarti Alessio 18 Satriano Celestina 24 Satta Alessia 23 Savrie' Mauro 16 Savrina D,; 31 Schaack P, 30; 53 Schiller, M; 42 Schindler H, 41; 38 Schlupp, M; 9 Schmelling M,; 10 Schmidt, B; 38 Schneider, O; 39 Schopper, A; 38 Schune MH,; 7 Schwemmer R,; 38 Sciascia Barbara 18 Sciubba Adalberto 24 Seco, M; 37 Semennikov, A; 30 Senderowska, K; 26 Sepp, I; 53 Serra, N; 40 Serrano, J; 6 Seyfert P,; 11 Shapkin, M; 35 Shapoval Illya 16, 43 Shatalov P; 30 Shcheglov, Y; 29 Shears, T; 52 Shekhtman L, 38; 34 Shevchenko O, 33; 43 Shevchenko, V; 30 Shires, A; 9 Coutinho RS,; 48 Sirendi, M; 47 Skidmore, N; 46 Skwarnicki, T; 59 Smith NA,; 52 Smith, E; 55 Smith J, 49; 47 Smith, M; 54 Sokoloff MD,; 57 Soler FJP,; 51 Soomro, F; 39 Souza, D; 46 De Paula BS,; 2 Spaan B,; 9 Sparkes A,; 50 Spradlin, P; 51 Stagni, F; 38 Stahl, S; 11 Steinkamp, O; 40 Stevenson, S; 55 Stoica, S; 28 Stone, S; 59 Storaci, B; 40 Straticiuc, M; 28 Straumann, U; 40 Subbiah VK,; 38 Sun, L; 57 Swientek, S; 9 Syropoulos V,; 42 Szczekowski M, 41; 27 Szczypka, P; 39 Szumlak T, 38; 26 T'Jampens, S; 4 Teklishyn M,; 7 Teodorescu E,; 28 Teubert, F; 38 Thomas, C; 55 Thomas, E; 38 van Tilburg, J; 11 Tisserand, V; 4 Tobin M,; 39 Tolk, S; 42 Tonelli Diego 38 Topp Joergensen S, 41; 55 Torr, N; 55 Tournefier, E; 53 Tourneur S, 4; 39 Tran MT,; 39 Tresch, M; 40 Tsaregorodtsev, A; 6 Tsopelas P,; 41 Tuning, N; 41 Garcia MU,; 38 Ukleja, A; 27 Urner, D; 54 Ustyuzhanin, A; 53 Uwer, U; 11 Vagnoni Vincenzo Maria 14 Valenti Giovanni 14 Vallier, A; 7 Van Dijk M,; 46 Vazquez Gomez Ricardo 18 Regueiro PV,; 37 Sierra CV,; 37 Vecchi Stefania 16 Velthuis JJ,; Veltri, Michele; Veneziano, G; 39 Vesterinen, M; 38 Viaud, B; 7 Vieira D,; 2 Vilasis Cardona X,; 36 Vollhardt, A; 40 Volyanskyy, D; 10 Voong, D; 46 Vorobyev, A; 29 Vorobyev, V; 34 Voss C, 33; 61 Voss, H; 10 Waldi, R; 61 Wallace, C; 48 Wallace, R; 12 Wandernoth, S; 11 Wang, J; 59 Ward DR,; 47 Watson NK,; 45 Webber AD,; 54 Websdale, D; 53 Whitehead, M; 48 Wicht, J; 38 Wiechczynski, J; 25 Wiedner, D; 11 Wiggers, L; 41 Wilkinson, G; 55 Williams MP,; 49 Williams M, 48; 56 Wilson FF,; 49 Wimberley, J; 58 Wishahi, J; 9 Wislicki W,; 27 Witek, M; 25 Wotton SA,; 47 Wright, S; 47 Wu, S; 3 Wyllie K,; 38 Xie, Y; 50 Xing Z, 38; 59 Yang, Z; 3 Young R,; 50 Yuan, X; 3 Yushchenko O,; 35 Zangoli Maria 14 Zavertyaev, M; 10 Zhang, F; 3 Zhang L,; 59 Zhang WC,; 12 Zhang, Y; 3 Zhelezov A,; 11 Zhokhov, A; 30 Zhong, L; 3 Zvyagin A,; 38,

doi:10.1007/JHEP10(2013)183

Direct and mixing-induced CP-violating asymmetries in B-s(0) -> K+K- decays are measured for the first time using a data sample of p p collisions, corresponding to an integrated luminosity of 1.0 fb(-1), collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C-KK = 0.14 +/- 0.11 +/- 0.03 and S-KK = 0.30 +/- 0.12 +/- 0.04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B-0 -> pi(+)pi(-) decays to be C-pi pi = -0.38 +/- 0.15 +/- 0.02 and S-pi pi = -0.71 +/- 0.13 +/- 0.02, in good agreement with existing measurements.