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Measurement of $CP$ asymmetry in $D^0\rightarrow K^-K^+$ decays

A measurement of the time-integrated CP asymmetry in the Cabibbo-suppressed decay D0→K−K+ is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1 , collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The flavour of the charm meson at producti...

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Autores principales: Aaij, Roel, Adeva, Bernardo, Adinolfi, Marco, Ajaltouni, Ziad, Akar, Simon, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Ali, Suvayu, Alkhazov, Georgy, Alvarez Cartelle, Paula, Alves Jr, Antonio Augusto, Amato, Sandra, Amerio, Silvia, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Andreassi, Guido, Andreotti, Mirco, Andrews, Jason, Appleby, Robert, Archilli, Flavio, d'Argent, Philippe, Arnau Romeu, Joan, Artamonov, Alexander, Artuso, Marina, Aslanides, Elie, Auriemma, Giulio, Baalouch, Marouen, Babuschkin, Igor, Bachmann, Sebastian, Back, John, Badalov, Alexey, Baesso, Clarissa, Baker, Sophie, Baldini, Wander, Barlow, Roger, Barschel, Colin, Barsuk, Sergey, Barter, William, Baszczyk, Mateusz, Batozskaya, Varvara, Batsukh, Baasansuren, Battista, Vincenzo, Bay, Aurelio, Beaucourt, Leo, Beddow, John, Bedeschi, Franco, Bediaga, Ignacio, Bel, Lennaert, Bellee, Violaine, Belloli, Nicoletta, Belous, Konstantin, Belyaev, Ivan, Ben-Haim, Eli, Bencivenni, Giovanni, Benson, Sean, Benton, Jack, Berezhnoy, Alexander, Bernet, Roland, Bertolin, Alessandro, Betti, Federico, Bettler, Marc-Olivier, van Beuzekom, Martinus, Bezshyiko, Iaroslava, Bifani, Simone, Billoir, Pierre, Bird, Thomas, Birnkraut, Alex, Bitadze, Alexander, Bizzeti, Andrea, Blake, Thomas, Blanc, Frederic, Blouw, Johan, Blusk, Steven, Bocci, Valerio, Boettcher, Thomas, Bondar, Alexander, Bondar, Nikolay, Bonivento, Walter, Borgheresi, Alessio, Borghi, Silvia, Borisyak, Maxim, Borsato, Martino, Bossu, Francesco, Boubdir, Meriem, Bowcock, Themistocles, Bowen, Espen Eie, Bozzi, Concezio, Braun, Svende, Britsch, Markward, Britton, Thomas, Brodzicka, Jolanta, Buchanan, Emma, Burr, Christopher, Bursche, Albert, Buytaert, Jan, Cadeddu, Sandro, Calabrese, Roberto, Calvi, Marta, Calvo Gomez, Miriam, Camboni, Alessandro, Campana, Pierluigi, Campora Perez, Daniel, Campora Perez, Daniel Hugo, Capriotti, Lorenzo, Carbone, Angelo, Carboni, Giovanni, Cardinale, Roberta, Cardini, Alessandro, Carniti, Paolo, Carson, Laurence, Carvalho Akiba, Kazuyoshi, Casse, Gianluigi, Cassina, Lorenzo, Castillo Garcia, Lucia, Cattaneo, Marco, Cauet, Christophe, Cavallero, Giovanni, Cenci, Riccardo, Charles, Matthew, Charpentier, Philippe, Chatzikonstantinidis, Georgios, Chefdeville, Maximilien, Chen, Shanzhen, Cheung, Shu-Faye, Chobanova, Veronika, Chrzaszcz, Marcin, Cid Vidal, Xabier, Ciezarek, Gregory, Clarke, Peter, Clemencic, Marco, Cliff, Harry, Closier, Joel, Coco, Victor, Cogan, Julien, Cogneras, Eric, Cogoni, Violetta, Cojocariu, Lucian, Collazuol, Gianmaria, Collins, Paula, Comerma-Montells, Albert, Contu, Andrea, Cook, Andrew, Coquereau, Samuel, Corti, Gloria, Corvo, Marco, Costa Sobral, Cayo Mar, Couturier, Benjamin, Cowan, Greig, Craik, Daniel Charles, Crocombe, Andrew, Cruz Torres, Melissa Maria, Cunliffe, Samuel, Currie, Robert, D'Ambrosio, Carmelo, Da Cunha Marinho, Franciole, Dall'Occo, Elena, Dalseno, Jeremy, David, Pieter, Davis, Adam, De Aguiar Francisco, Oscar, De Bruyn, Kristof, De Capua, Stefano, De Cian, Michel, De Miranda, Jussara, De Paula, Leandro, De Serio, Marilisa, De Simone, Patrizia, Dean, Cameron Thomas, Decamp, Daniel, Deckenhoff, Mirko, Del Buono, Luigi, Demmer, Moritz, Derkach, Denis, Deschamps, Olivier, Dettori, Francesco, Dey, Biplab, Di Canto, Angelo, Dijkstra, Hans, Dordei, Francesca, Dorigo, Mirco, Dosil Suárez, Alvaro, Dovbnya, Anatoliy, Dreimanis, Karlis, Dufour, Laurent, Dujany, Giulio, Dungs, Kevin, Durante, Paolo, Dzhelyadin, Rustem, Dziurda, Agnieszka, Dzyuba, Alexey, Déléage, Nicolas, Easo, Sajan, Ebert, Marcus, Egede, Ulrik, Egorychev, Victor, Eidelman, Semen, Eisenhardt, Stephan, Eitschberger, Ulrich, Ekelhof, Robert, Eklund, Lars, Elsasser, Christian, Ely, Scott, Esen, Sevda, Evans, Hannah Mary, Evans, Timothy, Falabella, Antonio, Farley, Nathanael, Farry, Stephen, Fay, Robert, Fazzini, Davide, Ferguson, Dianne, Fernandez Albor, Victor, Fernandez Prieto, Antonio, Ferrari, Fabio, Ferreira Rodrigues, Fernando, Ferro-Luzzi, Massimiliano, Filippov, Sergey, Fini, Rosa Anna, Fiore, Marco, Fiorini, Massimiliano, Firlej, Miroslaw, Fitzpatrick, Conor, Fiutowski, Tomasz, Fleuret, Frederic, Fohl, Klaus, Fontana, Marianna, Fontanelli, Flavio, Forshaw, Dean Charles, Forty, Roger, Franco Lima, Vinicius, Frank, Markus, Frei, Christoph, Fu, Jinlin, Furfaro, Emiliano, Färber, Christian, Gallas Torreira, Abraham, Galli, Domenico, Gallorini, Stefano, Gambetta, Silvia, Gandelman, Miriam, Gandini, Paolo, Gao, Yuanning, Garcia Martin, Luis Miguel, García Pardiñas, Julián, Garra Tico, Jordi, Garrido, Lluis, Garsed, Philip John, Gascon, David, Gaspar, Clara, Gavardi, Laura, Gazzoni, Giulio, Gerick, David, Gersabeck, Evelina, Gersabeck, Marco, Gershon, Timothy, Ghez, Philippe, Gianì, Sebastiana, Gibson, Valerie, Girard, Olivier Göran, Giubega, Lavinia-Helena, Gizdov, Konstantin, Gligorov, V.V., Golubkov, Dmitry, Golutvin, Andrey, Gomes, Alvaro, Gorelov, Igor Vladimirovich, Gotti, Claudio, Grabalosa Gándara, Marc, Graciani Diaz, Ricardo, Granado Cardoso, Luis Alberto, Graugés, Eugeni, Graverini, Elena, Graziani, Giacomo, Grecu, Alexandru, Griffith, Peter, Grillo, Lucia, Gruberg Cazon, Barak Raimond, Grünberg, Oliver, Gushchin, Evgeny, Guz, Yury, Gys, Thierry, Göbel, Carla, Hadavizadeh, Thomas, Hadjivasiliou, Christos, Haefeli, Guido, Haen, Christophe, Haines, Susan, Hall, Samuel, Hamilton, Brian, Han, Xiaoxue, Hansmann-Menzemer, Stephanie, Harnew, Neville, Harnew, Samuel, Harrison, Jonathan, Hatch, Mark, He, Jibo, Head, Timothy, Heister, Arno, Hennessy, Karol, Henrard, Pierre, Henry, Louis, Hernando Morata, Jose Angel, van Herwijnen, Eric, Heß, Miriam, Hicheur, Adlène, Hill, Donal, Hombach, Christoph, Hopchev, P H, Hulsbergen, Wouter, Humair, Thibaud, Hushchyn, Mikhail, Hussain, Nazim, Hutchcroft, David, Idzik, Marek, Ilten, Philip, Jacobsson, Richard, Jaeger, Andreas, Jalocha, Pawel, Jans, Eddy, Jawahery, Abolhassan, Jiang, Feng, John, Malcolm, Johnson, Daniel, Jones, Christopher, Joram, Christian, Jost, Beat, Jurik, Nathan, Kandybei, Sergii, Kanso, Walaa, Karacson, Matthias, Kariuki, James Mwangi, Karodia, Sarah, Kecke, Matthieu, Kelsey, Matthew, Kenyon, Ian, Kenzie, Matthew, Ketel, Tjeerd, Khairullin, Egor, Khanji, Basem, Khurewathanakul, Chitsanu, Kirn, Thomas, Klaver, Suzanne, Klimaszewski, Konrad, Koliiev, Serhii, Kolpin, Michael, Komarov, Ilya, Koopman, Rose, Koppenburg, Patrick, Kozachuk, Anastasiia, Kozeiha, Mohamad, Kravchuk, Leonid, Kreplin, Katharina, Kreps, Michal, Krokovny, Pavel, Kruse, Florian, Krzemien, Wojciech, Kucewicz, Wojciech, Kucharczyk, Marcin, Kudryavtsev, Vasily, Kuonen, Axel Kevin, Kurek, Krzysztof, Kvaratskheliya, Tengiz, Lacarrere, Daniel, Lafferty, George, Lai, Adriano, Lambert, Dean, Lanfranchi, Gaia, Langenbruch, Christoph, Latham, Thomas, Lazzeroni, Cristina, Le Gac, Renaud, van Leerdam, Jeroen, Lees, Jean-Pierre, Leflat, Alexander, Lefrançois, Jacques, Lefèvre, Regis, Lemaitre, Florian, Lemos Cid, Edgar, Leroy, Olivier, Lesiak, Tadeusz, Leverington, Blake, Li, Yiming, Likhomanenko, Tatiana, Lindner, Rolf, Linn, Christian, Lionetto, Federica, Liu, Bo, Liu, Xuesong, Loh, David, Longstaff, Iain, Lopes, Jose, Lucchesi, Donatella, Lucio Martinez, Miriam, Luo, Haofei, Lupato, Anna, Luppi, Eleonora, Lupton, Oliver, Lusiani, Alberto, Lyu, Xiao-Rui, Machefert, Frederic, Maciuc, Florin, Maev, Oleg, Maguire, Kevin, Malde, Sneha, Malinin, Alexander, Maltsev, Timofei, Manca, Giulia, Mancinelli, Giampiero, Manning, Peter Michael, Maratas, Jan, Marchand, Jean François, Marconi, Umberto, Marin Benito, Carla, Marino, Pietro, Marks, Jörg, Martellotti, Giuseppe, Martin, Morgan, Martinelli, Maurizio, Martinez Santos, Diego, Martinez Vidal, Fernando, Martins Tostes, Danielle, Massacrier, Laure Marie, Massafferri, André, Matev, Rosen, Mathad, Abhijit, Mathe, Zoltan, Matteuzzi, Clara, Mauri, Andrea, Maurin, Brice, Mazurov, Alexander, McCann, Michael, McCarthy, James, McNab, Andrew, McNulty, Ronan, Meadows, Brian, Meier, Frank, Meissner, Marco, Melnychuk, Dmytro, Merk, Marcel, Merli, Andrea, Michielin, Emanuele, Milanes, Diego Alejandro, Minard, Marie-Noelle, Mitzel, Dominik Stefan, Mogini, Andrea, Molina Rodriguez, Josue, Monroy, Ignacio Alberto, Monteil, Stephane, Morandin, Mauro, Morawski, Piotr, Mordà, Alessandro, Morello, Michael Joseph, Moron, Jakub, Morris, Adam Benjamin, Mountain, Raymond, Muheim, Franz, Mulder, Mick, Mussini, Manuel, Müller, Dominik, Müller, Janine, Müller, Katharina, Müller, Vanessa, Naik, Paras, Nakada, Tatsuya, Nandakumar, Raja, Nandi, Anita, Nasteva, Irina, Needham, Matthew, Neri, Nicola, Neubert, Sebastian, Neufeld, Niko, Neuner, Max, Nguyen, Anh Duc, Nguyen-Mau, Chung, Nieswand, Simon, Niet, Ramon, Nikitin, Nikolay, Nikodem, Thomas, Novoselov, Alexey, O'Hanlon, Daniel Patrick, Oblakowska-Mucha, Agnieszka, Obraztsov, Vladimir, Ogilvy, Stephen, Oldeman, Rudolf, Onderwater, Gerco, Otalora Goicochea, Juan Martin, Otto, Adam, Owen, Patrick, Oyanguren, Maria Aranzazu, Pais, Preema Rennee, Palano, Antimo, Palombo, Fernando, Palutan, Matteo, Panman, Jacob, Papanestis, Antonios, Pappagallo, Marco, Pappalardo, Luciano, Parker, William, Parkes, Christopher, Passaleva, Giovanni, Pastore, Alessandra, Patel, Girish, Patel, Mitesh, Patrignani, Claudia, Pearce, Alex, Pellegrino, Antonio, Penso, Gianni, Pepe Altarelli, Monica, Perazzini, Stefano, Perret, Pascal, Pescatore, Luca, Petridis, Konstantinos, Petrolini, Alessandro, Petrov, Aleksandr, Petruzzo, Marco, Picatoste Olloqui, Eduardo, Pietrzyk, Boleslaw, Pikies, Malgorzata, Pinci, Davide, Pistone, Alessandro, Piucci, Alessio, Playfer, Stephen, Plo Casasus, Maximo, Poikela, Tuomas, Polci, Francesco, Poluektov, Anton, Polyakov, Ivan, Polycarpo, Erica, Pomery, Gabriela Johanna, Popov, Alexander, Popov, Dmitry, Popovici, Bogdan, Poslavskii, Stanislav, Potterat, Cédric, Price, Eugenia, Price, Joseph David, Prisciandaro, Jessica, Pritchard, Adrian, Prouve, Claire, Pugatch, Valery, Puig Navarro, Albert, Punzi, Giovanni, Qian, Wenbin, Quagliani, Renato, Rachwal, Bartolomiej, Rademacker, Jonas, Rama, Matteo, Ramos Pernas, Miguel, Rangel, Murilo, Raniuk, Iurii, Raven, Gerhard, Redi, Federico, Reichert, Stefanie, dos Reis, Alberto, Remon Alepuz, Clara, Renaudin, Victor, Ricciardi, Stefania, Richards, Sophie, Rihl, Mariana, Rinnert, Kurt, Rives Molina, Vicente, Robbe, Patrick, Rodrigues, Ana Barbara, Rodrigues, Eduardo, Rodriguez Lopez, Jairo Alexis, Rodriguez Perez, Pablo, Rogozhnikov, Alexey, Roiser, Stefan, Rollings, Alexandra Paige, Romanovskiy, Vladimir, Romero Vidal, Antonio, Ronayne, John William, Rotondo, Marcello, Rudolph, Matthew Scott, Ruf, Thomas, Ruiz Valls, Pablo, Saborido Silva, Juan Jose, Sadykhov, Elnur, Sagidova, Naylya, Saitta, Biagio, Salustino Guimaraes, Valdir, Sanchez Mayordomo, Carlos, Sanmartin Sedes, Brais, Santacesaria, Roberta, Santamarina Rios, Cibran, Santimaria, Marco, Santovetti, Emanuele, Sarti, Alessio, Satriano, Celestina, Satta, Alessia, Saunders, Daniel Martin, Savrina, Darya, Schael, Stefan, Schellenberg, Margarete, Schiller, Manuel, Schindler, Heinrich, Schlupp, Maximilian, Schmelling, Michael, Schmelzer, Timon, Schmidt, Burkhard, Schneider, Olivier, Schopper, Andreas, Schubert, Konstantin, Schubiger, Maxime, Schune, Marie Helene, Schwemmer, Rainer, Sciascia, Barbara, Sciubba, Adalberto, Semennikov, Alexander, Sergi, Antonino, Serra, Nicola, Serrano, Justine, Sestini, Lorenzo, Seyfert, Paul, Shapkin, Mikhail, Shapoval, Illya, Shcheglov, Yury, Shears, Tara, Shekhtman, Lev, Shevchenko, Vladimir, Shires, Alexander, Siddi, Benedetto Gianluca, Silva Coutinho, Rafael, Silva de Oliveira, Luiz Gustavo, Simi, Gabriele, Simone, Saverio, Sirendi, Marek, Skidmore, Nicola, Skwarnicki, Tomasz, Smith, Eluned, Smith, Iwan Thomas, Smith, Jackson, Smith, Mark, Snoek, Hella, Sokoloff, Michael, Soler, Paul, Souza De Paula, Bruno, Spaan, Bernhard, Spradlin, Patrick, Sridharan, Srikanth, Stagni, Federico, Stahl, Marian, Stahl, Sascha, Stefko, Pavol, Stefkova, Slavorima, Steinkamp, Olaf, Stemmle, Simon, Stenyakin, Oleg, Stevenson, Scott, Stoica, Sabin, Stone, Sheldon, Storaci, Barbara, Stracka, Simone, Straticiuc, Mihai, Straumann, Ulrich, Sun, Liang, Sutcliffe, William, Swientek, Krzysztof, Syropoulos, Vasileios, Szczekowski, Marek, Szumlak, Tomasz, T'Jampens, Stephane, Tayduganov, Andrey, Tekampe, Tobias, Tellarini, Giulia, Teubert, Frederic, Thomas, Eric, van Tilburg, Jeroen, Tilley, Matthew James, Tisserand, Vincent, Tobin, Mark, Tolk, Siim, Tomassetti, Luca, Tonelli, Diego, Topp-Joergensen, Stig, Toriello, Francis, Tournefier, Edwige, Tourneur, Stephane, Trabelsi, Karim, Traill, Murdo, Tran, Minh Tâm, Tresch, Marco, Trisovic, Ana, Tsaregorodtsev, Andrei, Tsopelas, Panagiotis, Tully, Alison, Tuning, Niels, Ukleja, Artur, Ustyuzhanin, Andrey, Uwer, Ulrich, Vacca, Claudia, Vagnoni, Vincenzo, Valassi, Andrea, Valat, Sebastien, Valenti, Giovanni, Vallier, Alexis, Vazquez Gomez, Ricardo, Vazquez Regueiro, Pablo, Vecchi, Stefania, van Veghel, Maarten, Velthuis, Jaap, Veltri, Michele, Veneziano, Giovanni, Venkateswaran, Aravindhan, Vernet, Maxime, Vesterinen, Mika, Viaud, Benoit, Vieira, Daniel, Vieites Diaz, Maria, Vilasis-Cardona, Xavier, Volkov, Vladimir, Vollhardt, Achim, Voneki, Balazs, Vorobyev, Alexey, Vorobyev, Vitaly, Voß, Christian, de Vries, Jacco, Vázquez Sierra, Carlos, Waldi, Roland, Wallace, Charlotte, Wallace, Ronan, Walsh, John, Wang, Jianchun, Ward, David, Wark, Heather Mckenzie, Watson, Nigel, Websdale, David, Weiden, Andreas, Whitehead, Mark, Wicht, Jean, Wilkinson, Guy, Wilkinson, Michael, Williams, Mark Richard James, Williams, Matthew, Williams, Mike, Williams, Timothy, Wilson, Fergus, Wimberley, Jack, Wishahi, Julian, Wislicki, Wojciech, Witek, Mariusz, Wormser, Guy, Wotton, Stephen, Wraight, Kenneth, Wright, Simon, Wyllie, Kenneth, Xie, Yuehong, Xing, Zhou, Xu, Zhirui, Yang, Zhenwei, Yin, Hang, Yu, Jiesheng, Yuan, Xuhao, Yushchenko, Oleg, Zarebski, Kristian Alexander, Zavertyaev, Mikhail, Zhang, Liming, Zhang, Yanxi, Zhang, Yu, Zhelezov, Alexey, Zheng, Yangheng, Zhokhov, Anatoly, Zhu, Xianglei, Zhukov, Valery, Zucchelli, Stefano
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2017.01.061
http://cds.cern.ch/record/2228778
Descripción
Sumario:A measurement of the time-integrated CP asymmetry in the Cabibbo-suppressed decay D0→K−K+ is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1 , collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The flavour of the charm meson at production is determined from the charge of the pion in D⁎+→D0π+ and D⁎−→D‾0π− decays. The time-integrated CP asymmetry ACP(K−K+) is obtained assuming negligible CP violation in charm mixing and in Cabibbo-favoured D0→K−π+ , D+→K−π+π+ and D+→K‾0π+ decays used as calibration channels. It is found to be ACP(K−K+)=(0.14±0.15 (stat)±0.10 (syst))%. A combination of this result with previous LHCb measurements yields ACP(K−K+)=(0.04±0.12 (stat)±0.10 (syst))%,ACP(π−π+)=(0.07±0.14 (stat)±0.11 (syst))%. These are the most precise measurements from a single experiment. The result for ACP(K−K+) is the most precise determination of a time-integrated CP asymmetry in the charm sector to date, and neither measurement shows evidence of CP asymmetry.