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Measurement of CP violation in $B_s^0 \to \phi \phi$ decays

A measurement of the decay time dependent $CP$-violating asymmetry in $B_s^0 \to \phi\phi$ decays is presented, along with measurements of the $T$-odd triple-product asymmetries. In this decay channel, the $CP$-violating weak phase arises from the interference between $B_s^0$-$\overline{B}_s^0$ mixi...

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Autores principales: Aaij, Roel, Adeva, Bernardo, Adinolfi, Marco, Affolder, Anthony, Ajaltouni, Ziad, Akar, Simon, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Ali, Suvayu, Alkhazov, Georgy, Alvarez Cartelle, Paula, Alves Jr, Antonio, Amato, Sandra, Amerio, Silvia, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Anderson, Jonathan, Andreassen, Rolf, Andreotti, Mirco, Andrews, Jason, Appleby, Robert, Aquines Gutierrez, Osvaldo, Archilli, Flavio, Artamonov, Alexander, Artuso, Marina, Aslanides, Elie, Auriemma, Giulio, Baalouch, Marouen, Bachmann, Sebastian, Back, John, Badalov, Alexey, Balagura, Vladislav, Baldini, Wander, Barlow, Roger, Barschel, Colin, Barsuk, Sergey, Barter, William, Batozskaya, Varvara, Battista, Vincenzo, Bay, Aurelio, Beaucourt, Leo, Beddow, John, Bedeschi, Franco, Bediaga, Ignacio, Belogurov, Sergey, Belous, Konstantin, Belyaev, Ivan, Ben-Haim, Eli, Bencivenni, Giovanni, Benson, Sean, Benton, Jack, Berezhnoy, Alexander, Bernet, Roland, Bettler, Marc-Olivier, van Beuzekom, Martinus, Bien, Alexander, Bifani, Simone, Bird, Thomas, Bizzeti, Andrea, Bjørnstad, Pål Marius, Blake, Thomas, Blanc, Frédéric, Blouw, Johan, Blusk, Steven, Bocci, Valerio, Bondar, Alexander, Bondar, Nikolay, Bonivento, Walter, Borghi, Silvia, Borgia, Alessandra, Borsato, Martino, Bowcock, Themistocles, Bowen, Espen Eie, Bozzi, Concezio, Brambach, Tobias, van den Brand, Johannes, Bressieux, Joël, Brett, David, Britsch, Markward, Britton, Thomas, Brodzicka, Jolanta, Brook, Nicholas, Brown, Henry, Bursche, Albert, Busetto, Giovanni, Buytaert, Jan, Cadeddu, Sandro, Calabrese, Roberto, Calvi, Marta, Calvo Gomez, Miriam, Campana, Pierluigi, Campora Perez, Daniel, Carbone, Angelo, Carboni, Giovanni, Cardinale, Roberta, Cardini, Alessandro, Carson, Laurence, Carvalho Akiba, Kazuyoshi, Casse, Gianluigi, Cassina, Lorenzo, Castillo Garcia, Lucia, Cattaneo, Marco, Cauet, Christophe, Cenci, Riccardo, Charles, Matthew, Charpentier, Philippe, Chen, Shanzhen, Cheung, Shu-Faye, Chiapolini, Nicola, Chrzaszcz, Marcin, Ciba, Krzystof, Cid Vidal, Xabier, Ciezarek, Gregory, Clarke, Peter, Clemencic, Marco, Cliff, Harry, Closier, Joel, Coco, Victor, Cogan, Julien, Cogneras, Eric, Collins, Paula, Comerma-Montells, Albert, Contu, Andrea, Cook, Andrew, Coombes, Matthew, Coquereau, Samuel, Corti, Gloria, Corvo, Marco, Counts, Ian, Couturier, Benjamin, Cowan, Greig, Craik, Daniel Charles, Cruz Torres, Melissa Maria, Cunliffe, Samuel, Currie, Robert, D'Ambrosio, Carmelo, Dalseno, Jeremy, David, Pascal, David, Pieter, Davis, Adam, De Bruyn, Kristof, De Capua, Stefano, De Cian, Michel, De Miranda, Jussara, De Paula, Leandro, De Silva, Weeraddana, De Simone, Patrizia, Decamp, Daniel, Deckenhoff, Mirko, Del Buono, Luigi, Déléage, Nicolas, Derkach, Denis, Deschamps, Olivier, Dettori, Francesco, Di Canto, Angelo, Dijkstra, Hans, Donleavy, Stephanie, Dordei, Francesca, Dorigo, Mirco, Dosil Suárez, Alvaro, Dossett, David, Dovbnya, Anatoliy, Dreimanis, Karlis, Dujany, Giulio, Dupertuis, Frederic, Durante, Paolo, Dzhelyadin, Rustem, Dziurda, Agnieszka, Dzyuba, Alexey, Easo, Sajan, Egede, Ulrik, Egorychev, Victor, Eidelman, Semen, Eisenhardt, Stephan, Eitschberger, Ulrich, Ekelhof, Robert, Eklund, Lars, El Rifai, Ibrahim, Elsasser, Christian, Ely, Scott, Esen, Sevda, Evans, Hannah Mary, Evans, Timothy, Falabella, Antonio, Färber, Christian, Farinelli, Chiara, Farley, Nathanael, Farry, Stephen, Fay, Robert, Ferguson, Dianne, Fernandez Albor, Victor, Ferreira Rodrigues, Fernando, Ferro-Luzzi, Massimiliano, Filippov, Sergey, Fiore, Marco, Fiorini, Massimiliano, Firlej, Miroslaw, Fitzpatrick, Conor, Fiutowski, Tomasz, Fontana, Marianna, Fontanelli, Flavio, Forty, Roger, Francisco, Oscar, Frank, Markus, Frei, Christoph, Frosini, Maddalena, Fu, Jinlin, Furfaro, Emiliano, Gallas Torreira, Abraham, Galli, Domenico, Gallorini, Stefano, Gambetta, Silvia, Gandelman, Miriam, Gandini, Paolo, Gao, Yuanning, García Pardiñas, Julián, Garofoli, Justin, Garra Tico, Jordi, Garrido, Lluis, Gaspar, Clara, Gauld, Rhorry, Gavardi, Laura, Gavrilov, Gennadii, Gersabeck, Evelina, Gersabeck, Marco, Gershon, Timothy, Ghez, Philippe, Gianelle, Alessio, Giani', Sebastiana, Gibson, Valerie, Giubega, Lavinia-Helena, Gligorov, V.V., Göbel, Carla, Golubkov, Dmitry, Golutvin, Andrey, Gomes, Alvaro, Gordon, Hamish, Gotti, Claudio, Grabalosa Gándara, Marc, Graciani Diaz, Ricardo, Granado Cardoso, Luis Alberto, Graugés, Eugeni, Graziani, Giacomo, Grecu, Alexandru, Greening, Edward, Gregson, Sam, Griffith, Peter, Grillo, Lucia, Grünberg, Oliver, Gui, Bin, Gushchin, Evgeny, Guz, Yury, Gys, Thierry, Hadjivasiliou, Christos, Haefeli, Guido, Haen, Christophe, Haines, Susan, Hall, Samuel, Hamilton, Brian, Hampson, Thomas, Han, Xiaoxue, Hansmann-Menzemer, Stephanie, Harnew, Neville, Harnew, Samuel, Harrison, Jonathan, He, Jibo, Head, Timothy, Heijne, Veerle, Hennessy, Karol, Henrard, Pierre, Henry, Louis, Hernando Morata, Jose Angel, van Herwijnen, Eric, Heß, Miriam, Hicheur, Adlène, Hill, Donal, Hoballah, Mostafa, Hombach, Christoph, Hulsbergen, Wouter, Hunt, Philip, Hussain, Nazim, Hutchcroft, David, Hynds, Daniel, Idzik, Marek, Ilten, Philip, Jacobsson, Richard, Jaeger, Andreas, Jalocha, Pawel, Jans, Eddy, Jaton, Pierre, Jawahery, Abolhassan, Jing, Fanfan, John, Malcolm, Johnson, Daniel, Jones, Christopher, Joram, Christian, Jost, Beat, Jurik, Nathan, Kaballo, Michael, Kandybei, Sergii, Kanso, Walaa, Karacson, Matthias, Karbach, Moritz, Karodia, Sarah, Kelsey, Matthew, Kenyon, Ian, Ketel, Tjeerd, Khanji, Basem, Khurewathanakul, Chitsanu, Klaver, Suzanne, Klimaszewski, Konrad, Kochebina, Olga, Kolpin, Michael, Komarov, Ilya, Koopman, Rose, Koppenburg, Patrick, Korolev, Mikhail, Kozlinskiy, Alexandr, Kravchuk, Leonid, Kreplin, Katharina, Kreps, Michal, Krocker, Georg, Krokovny, Pavel, Kruse, Florian, Kucewicz, Wojciech, Kucharczyk, Marcin, Kudryavtsev, Vasily, Kurek, Krzysztof, Kvaratskheliya, Tengiz, La Thi, Viet Nga, Lacarrere, Daniel, Lafferty, George, Lai, Adriano, Lambert, Dean, Lambert, Robert W, Lanfranchi, Gaia, Langenbruch, Christoph, Langhans, Benedikt, Latham, Thomas, Lazzeroni, Cristina, Le Gac, Renaud, van Leerdam, Jeroen, Lees, Jean-Pierre, Lefèvre, Regis, Leflat, Alexander, Lefrançois, Jacques, Leo, Sabato, Leroy, Olivier, Lesiak, Tadeusz, Leverington, Blake, Li, Yiming, Likhomanenko, Tatiana, Liles, Myfanwy, Lindner, Rolf, Linn, Christian, Lionetto, Federica, Liu, Bo, Liu, Guoming, Lohn, Stefan, Longstaff, Iain, Lopes, Jose, Lopez-March, Neus, Lowdon, Peter, Lu, Haiting, Lucchesi, Donatella, Luo, Haofei, Lupato, Anna, Luppi, Eleonora, Lupton, Oliver, Machefert, Frederic, Machikhiliyan, Irina V, Maciuc, Florin, Maev, Oleg, Malde, Sneha, Manca, Giulia, Mancinelli, Giampiero, Maratas, Jan, Marchand, Jean François, Marconi, Umberto, Marin Benito, Carla, Marino, Pietro, Märki, Raphael, Marks, Jörg, Martellotti, Giuseppe, Martens, Aurelien, Martín Sánchez, Alexandra, Martinelli, Maurizio, Martinez Santos, Diego, Martinez Vidal, Fernando, Martins Tostes, Danielle, Massafferri, André, Matev, Rosen, Mathe, Zoltan, Matteuzzi, Clara, Mazurov, Alexander, McCann, Michael, McCarthy, James, McNab, Andrew, McNulty, Ronan, McSkelly, Ben, Meadows, Brian, Meier, Frank, Meissner, Marco, Merk, Marcel, Milanes, Diego Alejandro, Minard, Marie-Noelle, Moggi, Niccolò, Molina Rodriguez, Josue, Monteil, Stephane, Morandin, Mauro, Morawski, Piotr, Mordà, Alessandro, Morello, Michael Joseph, Moron, Jakub, Morris, Adam Benjamin, Mountain, Raymond, Muheim, Franz, Müller, Katharina, Mussini, Manuel, Muster, Bastien, Naik, Paras, Nakada, Tatsuya, Nandakumar, Raja, Nasteva, Irina, Needham, Matthew, Neri, Nicola, Neubert, Sebastian, Neufeld, Niko, Neuner, Max, Nguyen, Anh Duc, Nguyen, Thi-Dung, Nguyen-Mau, Chung, Nicol, Michelle, Niess, Valentin, Niet, Ramon, Nikitin, Nikolay, Nikodem, Thomas, Novoselov, Alexey, O'Hanlon, Daniel Patrick, Oblakowska-Mucha, Agnieszka, Obraztsov, Vladimir, Oggero, Serena, Ogilvy, Stephen, 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Vitaly, Voß, Christian, Voss, Helge, de Vries, Jacco, Waldi, Roland, Wallace, Charlotte, Wallace, Ronan, Walsh, John, Wandernoth, Sebastian, Wang, Jianchun, Ward, David, Watson, Nigel, Websdale, David, Whitehead, Mark, Wicht, Jean, Wiedner, Dirk, Wilkinson, Guy, Williams, Matthew, Williams, Mike, Wilson, Fergus, Wimberley, Jack, Wishahi, Julian, Wislicki, Wojciech, Witek, Mariusz, Wormser, Guy, Wotton, Stephen, Wright, Simon, Wu, Suzhi, Wyllie, Kenneth, Xie, Yuehong, Xing, Zhou, Xu, Zhirui, Yang, Zhenwei, Yuan, Xuhao, Yushchenko, Oleg, Zangoli, Maria, Zavertyaev, Mikhail, Zhang, Liming, Zhang, Wen Chao, Zhang, Yanxi, Zhelezov, Alexey, Zhokhov, Anatoly, Zhong, Liang, Zvyagin, Alexander
Lenguaje:eng
Publicado: 08 0
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.90.052011
http://cds.cern.ch/record/1741901
Descripción
Sumario:A measurement of the decay time dependent $CP$-violating asymmetry in $B_s^0 \to \phi\phi$ decays is presented, along with measurements of the $T$-odd triple-product asymmetries. In this decay channel, the $CP$-violating weak phase arises from the interference between $B_s^0$-$\overline{B}_s^0$ mixing and the loop-induced decay amplitude. Using a sample of proton-proton collision data corresponding to an integrated luminosity of $3.0\, fb^{-1}$ collected with the LHCb detector, a signal yield of approximately 4000 $B_s^0 \to \phi\phi$ decays is obtained. The $CP$-violating phase is measured to be ${\phi_s =-0.17\pm0.15\mathrm{\,(stat)}\pm0.03\mathrm{\,(syst)}}$ rad. The triple-product asymmetries are measured to be ${A_U=-0.003\pm0.017\mathrm{\,(stat)}\pm0.006\mathrm{\,(syst)}}$ and ${A_V=-0.017\pm0.017\mathrm{\,(stat)}\pm0.006\mathrm{\,(syst)}}$. Results are consistent with the hypothesis of $CP$ conservation.