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Search for Majorana neutrinos in $B^- \to \pi^+\mu^-\mu^-$ decays

A search for heavy Majorana neutrinos produced in the $B^- \to \pi^+\mu^-\mu^-$ decay mode is performed using 3 fb$^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at center-of-mass energies of 7 TeV and 8 TeV at the LHC. Neutrinos with masses in the range 250-5000...

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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, Brook, Nicholas, Brown, Henry, Bursche, Albert, Busetto, Giovanni, Buytaert, Jan, Cadeddu, Sandro, Calabrese, Roberto, Callot, Olivier, Calvi, Marta, Calvo Gomez, Miriam, Camboni, Alessandro, Campana, Pierluigi, Campora Perez, Daniel, Carbone, Angelo, Carboni, Giovanni, Cardinale, Roberta, Cardini, Alessandro, Carranza-Mejia, Hector, Carson, Laurence, Carvalho Akiba, Kazuyoshi, Casse, Gianluigi, Castillo Garcia, Lucia, Cattaneo, Marco, Cauet, Christophe, Cenci, Riccardo, Charles, Matthew, Charpentier, Philippe, Cheung, Shu-Faye, Chiapolini, Nicola, Chrzaszcz, Marcin, Ciba, Krzystof, Cid Vidal, Xabier, Ciezarek, Gregory, Clarke, Peter, Clemencic, Marco, Cliff, Harry, Closier, Joel, Coca, Cornelia, Coco, Victor, Cogan, Julien, Cogneras, Eric, Collins, Paula, Comerma-Montells, Albert, Contu, Andrea, Cook, Andrew, Coombes, Matthew, Coquereau, Samuel, Corti, Gloria, 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 Bonis, Isabelle, 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, Dorosz, Piotr, Dosil Suárez, Alvaro, Dossett, David, Dovbnya, Anatoliy, 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, Falabella, Antonio, Färber, Christian, Farinelli, Chiara, Farry, Stephen, Ferguson, Dianne, Fernandez Albor, Victor, Ferreira Rodrigues, Fernando, Ferro-Luzzi, Massimiliano, Filippov, Sergey, Fiore, Marco, Fiorini, Massimiliano, Fitzpatrick, Conor, Fontana, Marianna, Fontanelli, Flavio, Forty, Roger, Francisco, Oscar, Frank, Markus, Frei, Christoph, Frosini, Maddalena, Furfaro, Emiliano, Gallas Torreira, Abraham, Galli, Domenico, Gandelman, Miriam, Gandini, Paolo, Gao, Yuanning, Garofoli, Justin, Garra Tico, Jordi, Garrido, Lluis, Gaspar, Clara, Gauld, Rhorry, Gersabeck, Evelina, Gersabeck, Marco, Gershon, Timothy, Ghez, Philippe, Gianelle, Alessio, Gibson, Valerie, Giubega, Lavinia-Helena, Gligorov, V.V., Göbel, Carla, Golubkov, Dmitry, Golutvin, 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Fanfan, John, Malcolm, Johnson, Daniel, Jones, Christopher, Joram, Christian, Jost, Beat, Jurik, Nathan, Kaballo, Michael, Kandybei, Sergii, Kanso, Wallaa, Karacson, Matthias, Karbach, Moritz, Kenyon, Ian, Ketel, Tjeerd, Khanji, Basem, Khurewathanakul, Chitsanu, Klaver, Suzanne, Kochebina, Olga, Komarov, Ilya, Koopman, Rose, Koppenburg, Patrick, Korolev, Mikhail, Kozlinskiy, Alexandr, Kravchuk, Leonid, Kreplin, Katharina, Kreps, Michal, Krocker, Georg, Krokovny, Pavel, Kruse, Florian, Kucharczyk, Marcin, Kudryavtsev, Vasily, Kurek, Krzysztof, Kvaratskheliya, Tengiz, La Thi, Viet Nga, Lacarrere, Daniel, Lafferty, George, Lai, Adriano, Lambert, Dean, Lambert, Robert W, Lanciotti, Elisa, Lanfranchi, Gaia, Langenbruch, Christoph, 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, Liles, Myfanwy, Lindner, Rolf, Linn, Christian, Lionetto, Federica, Liu, Bo, Liu, Guoming, Lohn, Stefan, Longstaff, Ian, Lopes, Jose, Lopez-March, Neus, Lowdon, Peter, Lu, Haiting, Lucchesi, Donatella, Luisier, Johan, Luo, Haofei, Luppi, Eleonora, Lupton, Oliver, Machefert, Frederic, Machikhiliyan, Irina V, Maciuc, Florin, Maev, Oleg, Malde, Sneha, Manca, Giulia, Mancinelli, Giampiero, Manzali, Matteo, Maratas, Jan, Marconi, Umberto, Marino, Pietro, Märki, Raphael, Marks, Jörg, Martellotti, Giuseppe, Martens, Aurelien, Martín Sánchez, Alexandra, Martinelli, Maurizio, Martinez Santos, Diego, 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, Molina Rodriguez, Josue, Monteil, Stephane, Moran, Dermot, Morandin, Mauro, Morawski, Piotr, Mordà, Alessandro, Morello, Michael Joseph, 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Rodriguez Perez, Pablo, Roiser, Stefan, Romanovsky, Vladimir, Romero Vidal, Antonio, Rotondo, Marcello, Rouvinet, Julien, Ruf, Thomas, Ruffini, Fabrizio, Ruiz, Hugo, Ruiz Valls, Pablo, Sabatino, Giovanni, Saborido Silva, Juan Jose, Sagidova, Naylya, Sail, Paul, Saitta, Biagio, Salustino Guimaraes, Valdir, Sanmartin Sedes, Brais, Santacesaria, Roberta, Santamarina Rios, Cibran, Santovetti, Emanuele, Sapunov, Matvey, Sarti, Alessio, Satriano, Celestina, Satta, Alessia, Savrie, Mauro, Savrina, Darya, Schiller, Manuel, Schindler, Heinrich, Schlupp, Maximilian, Schmelling, Michael, Schmidt, Burkhard, Schneider, Olivier, Schopper, Andreas, Schune, Marie Helene, Schwemmer, Rainer, Sciascia, Barbara, Sciubba, Adalberto, Seco, Marcos, Semennikov, Alexander, Senderowska, Katarzyna, Sepp, Indrek, Serra, Nicola, Serrano, Justine, Seyfert, Paul, Shapkin, Mikhail, Shapoval, Illya, Shcheglov, Yury, Shears, Tara, Shekhtman, Lev, Shevchenko, Oksana, Shevchenko, Vladimir, Shires, Alexander, Silva Coutinho, Rafael, Simi, Gabriele, Sirendi, Marek, Skidmore, Nicola, Skwarnicki, Tomasz, Smith, Anthony, Smith, Edmund, Smith, Eluned, Smith, Jackson, Smith, Mark, Snoek, Hella, Sokoloff, Michael, Soler, Paul, Soomro, Fatima, Souza, Daniel, Souza De Paula, Bruno, Spaan, Bernhard, Sparkes, Ailsa, Spinella, Franco, Spradlin, Patrick, Stagni, Federico, Stahl, Sascha, Steinkamp, Olaf, Stevenson, Scott, Stoica, Sabin, Stone, Sheldon, Storaci, Barbara, Stracka, Simone, Straticiuc, Mihai, Straumann, Ulrich, Stroili, Roberto, Subbiah, Vijay Kartik, Sun, Liang, Sutcliffe, William, Swientek, Stefan, Syropoulos, Vasileios, Szczekowski, Marek, Szczypka, Paul, Szilard, Daniela, Szumlak, Tomasz, T'Jampens, Stephane, Teklishyn, Maksym, Tellarini, Giulia, Teodorescu, Eliza, Teubert, Frederic, Thomas, Christopher, Thomas, Eric, van Tilburg, Jeroen, Tisserand, Vincent, Tobin, Mark, Tolk, Siim, Tomassetti, Luca, Tonelli, Diego, Topp-Joergensen, Stig, Torr, Nicholas, Tournefier, Edwige, Tourneur, Stephane, Tran, Minh Tâm, Tresch, Marco, Tsaregorodtsev, Andrei, Tsopelas, Panagiotis, Tuning, Niels, Ubeda Garcia, Mario, Ukleja, Artur, Ustyuzhanin, Andrey, Uwer, Ulrich, Vagnoni, Vincenzo, Valenti, Giovanni, Vallier, Alexis, Vazquez Gomez, Ricardo, Vazquez Regueiro, Pablo, Vázquez Sierra, Carlos, Vecchi, Stefania, Velthuis, Jaap, Veltri, Michele, Veneziano, Giovanni, Vesterinen, Mika, Viaud, Benoit, Vieira, Daniel, Vilasis-Cardona, Xavier, Vollhardt, Achim, Volyanskyy, Dmytro, Voong, David, Vorobyev, Alexey, Vorobyev, Vitaly, Voß, Christian, Voss, Helge, de Vries, Jacco, Waldi, Roland, Wallace, Charlotte, Wallace, Ronan, Wandernoth, Sebastian, Wang, Jianchun, Ward, David, Watson, Nigel, Webber, Adam Dane, Websdale, David, Whitehead, Mark, Wicht, Jean, Wiechczynski, Jaroslaw, Wiedner, Dirk, Wiggers, Leo, 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, Yang, Zhenwei, Yuan, Xuhao, Yushchenko, Oleg, Zangoli, Maria, Zavertyaev, Mikhail, Zhang, Feng, Zhang, Liming, Zhang, Wen Chao, Zhang, Yanxi, Zhelezov, Alexey, Zhokhov, Anatoly, Zhong, Liang, Zvyagin, Alexander
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.112.131802
http://cds.cern.ch/record/1644291
Descripción
Sumario:A search for heavy Majorana neutrinos produced in the $B^- \to \pi^+\mu^-\mu^-$ decay mode is performed using 3 fb$^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at center-of-mass energies of 7 TeV and 8 TeV at the LHC. Neutrinos with masses in the range 250-5000 MeV and lifetimes from zero to 1000 ps are probed. In the absence of a signal, upper limits are set on the branching fraction ${\cal{B}}(B^- \to \pi^+\mu^-\mu^-)$ as functions of neutrino mass and lifetime. These limits are on the order of $10^{-9}$ for short neutrino lifetimes of 1 ps or less. Limits are also set on the coupling between the muon and a possible fourth-generation neutrino.