Measurement of CP asymmetries in the decays B0 → K*0 μ+ μ− and B+ → K+ μ+ μ−

LHCb collaboration, N; Aaij, R; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P; Alves, A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J; Appleby, R; Gutierrez, O; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J; Badalov, A; Baldini, W; Barlow, R; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bettler, M; van Beuzekom, M; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Bjørnstad, P; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Borsato, M; Bowcock, T; Bowen, E; Bozzi, C; Brambach, T; van den Brand, J; Bressieux, J; Brett, D; Britsch, M; Britton, T; Brodzicka, J; Brook, N; Brown, H; Bursche, A; Busetto, G; Buytaert, J; Cadeddu, S; Calabrese, R; Calvi, M; Gomez, M; Campana, P; Perez, D; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carson, L; Akiba, K; Casse, G; Cassina, L; Garcia, L; Cattaneo, M; Cauet, C; Cenci, R; Charles, M; Charpentier, P; Chefdeville, M; Chen, S; Cheung, S; Chiapolini, N; Chrzaszcz, M; Ciba, K; Vidal, X; Ciezarek, G; Clarke, P; Clemencic, M; Cliff, H; Closier, J; Coco, V; Cogan, J; Cogneras, E; Collins, P; Comerma Montells, A; Contu, A; Cook, A; Coombes, M; Coquereau, S; Corti, G; Corvo, M; Counts, I; Couturier, B; Cowan, G; Craik, D; Torres, M; Cunliffe, S; Currie, R; D’Ambrosio, C; Dalseno, J; David, P; David, P; Davis, A; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J; De Paula, L; De Silva, W; De Simone, P; Decamp, D; Deckenhoff, M; Del Buono, L; Déléage, N; Derkach, D; Deschamps, O; Dettori, F; Di Canto, A; Dijkstra, H; Donleavy, S; Dordei, F; Dorigo, M; Suárez, A; Dossett, D; Dovbnya, A; Dreimanis, K; Dujany, G; Dupertuis, F; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; El Rifai, I; Elsasser, C; Ely, S; Esen, S; Evans, H; Evans, T; Falabella, A; Färber, C; Farinelli, C; Farley, N; Farry, S; Fay, R; Ferguson, D; Albor, V; Rodrigues, F; Ferro Luzzi, M; Filippov, S; Fiore, M; Fiorini, M; Firlej, M; Fitzpatrick, C; Fiutowski, T; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Fu, J; Furfaro, E; Torreira, A; Galli, D; Gallorini, S; Gambetta, S; Gandelman, M; Gandini, P; Gao, Y; Pardiñas, J; Garofoli, J; Tico, J; Garrido, L; Gaspar, C; Gauld, R; Gavardi, L; Gavrilov, G; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, P; Gianelle, A; Giani’, S; Gibson, V; Giubega, L; Gligorov, V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gotti, C; Gándara, M; Diaz, R; Cardoso, L; Graugés, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Griffith, P; Grillo, L; Grünberg, O; Gui, B; Gushchin, E; Guz, Y; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S; Hall, S; Hamilton, B; Hampson, T; Han, X; Hansmann Menzemer, S; Harnew, N; Harnew, S; Harrison, J; He, J; Head, T; Heijne, V; Hennessy, K; Henrard, P; Henry, L; Morata, J; van Herwijnen, E; Heß, M; Hicheur, A; Hill, D; Hoballah, M; Hombach, C; Hulsbergen, W; Hunt, P; Hussain, N; Hutchcroft, D; Hynds, D; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jalocha, J; Jans, E; Jaton, P; Jawahery, A; Jing, F; John, M; Johnson, D; Jones, C; Joram, C; Jost, B; Jurik, N; Kaballo, M; Kandybei, S; Kanso, W; Karacson, M; Karbach, T; Karodia, S; Kelsey, M; Kenyon, I; Ketel, T; Khanji, B; Khurewathanakul, C; Klaver, S; Klimaszewski, K; Kochebina, O; Kolpin, M; Komarov, I; Koopman, R; Koppenburg, P; Korolev, M; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kurek, K; Kvaratskheliya, T; La Thi, V; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R; Lanfranchi, G; Langenbruch, C; Langhans, B; Latham, T; Lazzeroni, C; Le Gac, R; van Leerdam, J; Lees, J; Lefèvre, R; Leflat, A; Lefrançois, J; Leo, S; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Likhomanenko, T; Liles, M; Lindner, R; Linn, C; Lionetto, F; Liu, B; Lohn, S; Longstaff, I; Lopes, J; Lopez March, N; Lowdon, P; Lu, H; Lucchesi, D; Luo, H; Lupato, A; Luppi, E; Lupton, O; Machefert, F; Machikhiliyan, I; Maciuc, F; Maev, O; Malde, S; Malinin, A; Manca, G; Mancinelli, G; Maratas, J; Marchand, J; Marconi, U; Benito, C; Marino, P; Märki, R; Marks, J; Martellotti, G; Martens, A; Sánchez, A; Martinelli, M; Santos, D; Vidal, F; Tostes, D; Massafferri, A; Matev, R; Mathe, Z; Matteuzzi, C; Mazurov, A; Mccann, M; Mccarthy, J; Mcnab, A; Mcnulty, R; Mcskelly, B; Meadows, B; Meier, F; Meissner, M; Merk, M; Milanes, D; Minard, M; Moggi, N; Rodriguez, J; Monteil, S; Morandin, M; Morawski, P; Mordà, A; Morello, M; Moron, J; Morris, A; Mountain, R; Muheim, F; Müller, K; Mussini, M; Muster, B; Naik, P; Nakada, T; Nandakumar, R; Nasteva, I; Needham, M; Neri, N; Neubert, S; Neufeld, N; Neuner, M; Nguyen, A; Nguyen, T; Nguyen Mau, C; Nicol, M; Niess, V; Niet, R; Nikitin, N; Nikodem, T; Novoselov, A; O’Hanlon, D; Oblakowska Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Onderwater, G; Orlandea, M; Goicochea, J; Owen, P; Oyanguren, A; Pal, B; Palano, A; Palombo, F; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Pappalardo, L; Parkes, C; Parkinson, C; Passaleva, G; Patel, G; Patel, M; Patrignani, C; Alvarez, A; Pearce, A; Pellegrino, A; Altarelli, M; Perazzini, S; Trigo, E; Perret, P; Perrin Terrin, M; Pescatore, L; Pesen, E; Petridis, K; Petrolini, A; Olloqui, E; Pietrzyk, B; Pilař, T; Pinci, D; Pistone, A; Playfer, S; Casasus, M; Polci, F; Poluektov, A; Polycarpo, E; Popov, A; Popov, D; Popovici, B; Potterat, C; Price, E; Prisciandaro, J; Pritchard, A; Prouve, C; Pugatch, V; Navarro, A; Punzi, G; Qian, W; Rachwal, B; Rademacker, J; Rakotomiaramanana, B; Rama, M; Rangel, M; Raniuk, I; Rauschmayr, N; Raven, G; Reichert, S; Reid, M; dos Reis, A; Ricciardi, S; Richards, S; Rihl, M; Rinnert, K; Molina, V; Romero, D; Robbe, P; Rodrigues, A; Rodrigues, E; Perez, P; Roiser, S; Romanovsky, V; Vidal, A; Rotondo, M; Rouvinet, J; Ruf, T; Ruffini, F; Ruiz, H; Valls, P; Silva, J; Sagidova, N; Sail, P; Saitta, B; Guimaraes, V; Mayordomo, C; Sedes, B; Santacesaria, R; Rios, C; Santovetti, E; Sarti, A; Satriano, C; Satta, A; Saunders, D; Savrie, M; Savrina, D; Schiller, M; Schindler, H; Schlupp, M; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Sepp, I; Serra, N; Serrano, J; Sestini, L; Seyfert, P; Shapkin, M; Shapoval, I; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, V; Shires, A; Coutinho, R; Simi, G; Sirendi, M; Skidmore, N; Skwarnicki, T; Smith, N; Smith, E; Smith, E; Smith, J; Smith, M; Snoek, H; Sokoloff, M; Soler, F; Soomro, F; Souza, D; De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Sridharan, S; Stagni, F; Stahl, M; Stahl, S; Steinkamp, O; Stenyakin, O; Stevenson, S; Stoica, S; Stone, S; Storaci, B; Stracka, S; Straticiuc, M; Straumann, U; Stroili, R; Subbiah, V; Sun, L; Sutcliffe, W; Swientek, K; Swientek, S; Syropoulos, V; Szczekowski, M; Szczypka, P; Szilard, D; Szumlak, T; T’Jampens, S; Teklishyn, M; Tellarini, G; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Tomassetti, L; Tonelli, D; Topp Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Tran, M; Tresch, M; Tsaregorodtsev, A; Tsopelas, P; Tuning, N; Garcia, M; Ukleja, A; Ustyuzhanin, A; Uwer, U; Vagnoni, V; Valenti, G; Vallier, A; Gomez, R; Regueiro, P; Sierra, C; Vecchi, S; Velthuis, J; Veltri, M; Veneziano, G; Vesterinen, M; Viaud, B; Vieira, D; Diaz, M; Vilasis Cardona, X; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; Voss, H; de Vries, J; Waldi, R; Wallace, C; Wallace, R; Walsh, J; Wandernoth, S; Wang, J; Ward, D; Watson, N; Websdale, D; Whitehead, M; Wicht, J; Wiedner, D; Wilkinson, G; Williams, M; Williams, M; Wilson, F; Wimberley, J; Wishahi, J; Wislicki, W; Witek, M; Wormser, G; Wotton, S; Wright, S; Wu, S; Wyllie, K; Xie, Y; Xing, Z; Xu, Z; Yang, Z; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, L; Zhang, W; Zhang, Y; Zhelezov, A; Zhokhov, A; Zhong, L; Zvyagin, A

doi:10.1007/JHEP09(2014)177

Abstract: The direct CP asymmetries of the decays Bsup0/sup → Ksup*0/supμsup+/supμsup−/sup and Bsup+/sup → Ksup+/supμsup+/supμsup−/sup are measured using pp collision data corresponding to an integrated luminosity of 3.0 fbsup−1/sup collected with the LHCb detector. The respective control modes Bsup0/sup → J/ψKsup*0/sup and Bsup+/sup → J/ψKsup+/sup are used to account for detection and production asymmetries. The measurements are made in several intervals of μsup+/supμsup−/sup invariant mass squared, with the ϕ(1020) and charmonium resonance regions excluded. Under the hypothesis of zero CP asymmetry in the control modes, the average values of the asymmetries are(Formula Presented)where the first uncertainties are statistical and the second are due to systematic effects. Both measurements are consistent with the Standard Model prediction of small CP asymmetry in these decays.[Figure not available: see fulltext.]

LHCb collaboration, N., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetries in the decays B0 → K*0 μ+ μ− and B+ → K+ μ+ μ−. JOURNAL OF HIGH ENERGY PHYSICS, 2014(9) [10.1007/JHEP09(2014)177].