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Measurement of the branching fraction of the decay $B_s^0\to K_S^0 K_S^0$

A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 fb$^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be$$ \mathcal{B}(B_s^...

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Autores principales: Aaij, Roel, Abellán Beteta, Carlos, Ackernley, Thomas, Adeva, Bernardo, Adinolfi, Marco, Afsharnia, Hossein, Aidala, Christine Angela, Aiola, Salvatore, Ajaltouni, Ziad, Akar, Simon, Albicocco, Pietro, Albrecht, Johannes, Alessio, Federico, Alexander, Michael, Alfonso Albero, Alejandro, Alkhazov, Georgy, Alvarez Cartelle, Paula, Alves Jr, Antonio Augusto, Amato, Sandra, Amhis, Yasmine, An, Liupan, Anderlini, Lucio, Andreassi, Guido, Andreotti, Mirco, Archilli, Flavio, Arnau Romeu, Joan, Artamonov, Alexander, Artuso, Marina, Arzymatov, Kenenbek, Aslanides, Elie, Atzeni, Michele, Audurier, Benjamin, Bachmann, Sebastian, Back, John, Baker, Sophie, Balagura, Vladislav, Baldini, Wander, Baranov, Alexander, Barlow, Roger, Barsuk, Sergey, Barter, William, Bartolini, Matteo, Baryshnikov, Fedor, Bassi, Giovanni, Batozskaya, Varvara, Batsukh, Baasansuren, Battig, Alexander, Battista, Vincenzo, Bay, Aurelio, Becker, Maik, Bedeschi, Franco, Bediaga, Ignacio, Beiter, Andrew, Bel, Lennaert, Belavin, Vladislav, Belin, Samuel, Beliy, Nikita, Bellee, Violaine, Belous, Konstantin, Belyaev, Ivan, Bencivenni, Giovanni, Ben-Haim, Eli, Benson, Sean, Beranek, Sarah, Berezhnoy, Alexander, Bernet, Roland, Berninghoff, Daniel, Bernstein, Harris Conan, Bertholet, Emilie, Bertolin, Alessandro, Betancourt, Christopher, Betti, Federico, Bettler, Marc-Olivier, Bezshyiko, Iaroslava, Bhasin, Srishti, Bhom, Jihyun, Bieker, Martin Stefan, Bifani, Simone, Billoir, Pierre, Bizzeti, Andrea, Bjørn, Mikkel, Blago, Michele Piero, Blake, Thomas, Blanc, Frederic, Blusk, Steven, Bobulska, Dana, Bocci, Valerio, Boente Garcia, Oscar, Boettcher, Thomas, Boldyrev, Alexey, Bondar, Alexander, Bondar, Nikolay, Borghi, Silvia, Borisyak, Maxim, Borsato, Martino, Borsuk, Jozef Tomasz, Bowcock, Themistocles, Bozzi, Concezio, Braun, Svende, Brea Rodriguez, Alexandre, Brodski, Michael, Brodzicka, Jolanta, Brossa Gonzalo, Arnau, Brundu, Davide, Buchanan, Emma, Büchler-Germann, Angela, Buonaura, Annarita, Burr, Christopher, Bursche, Albert, Butter, Jordy Sebastiaan, Buytaert, Jan, Byczynski, Wiktor, Cadeddu, Sandro, Cai, Hao, Calabrese, Roberto, Cali, Stefano, Calladine, Ryan, Calvi, Marta, Calvo Gomez, Miriam, Camboni, Alessandro, Campana, Pierluigi, Campora Perez, Daniel Hugo, Capriotti, Lorenzo, Carbone, Angelo, Carboni, Giovanni, Cardinale, Roberta, Cardini, Alessandro, Carniti, Paolo, Carvalho Akiba, Kazuyoshi, Casais Vidal, Adrian, Casse, Gianluigi, Cattaneo, Marco, Cavallero, Giovanni, Cenci, Riccardo, Cerasoli, Jacopo, Chapman, Matthew George, Charles, Matthew, Charpentier, Philippe, Chatzikonstantinidis, Georgios, Chefdeville, Maximilien, Chekalina, Viktoriia, Chen, Chen, Chen, Shanzhen, Chernov, Aleksei, Chitic, Stefan-Gabriel, Chobanova, Veronika, Chrzaszcz, Marcin, Chubykin, Alexsei, Ciambrone, Paolo, Cicala, Maria Flavia, Cid Vidal, Xabier, Ciezarek, Gregory, Cindolo, Federico, Clarke, Peter, Clemencic, Marco, Cliff, Harry, Closier, Joel, Cobbledick, John Leslie, Coco, Victor, Coelho, Joao A B, Cogan, Julien, Cogneras, Eric, Cojocariu, Lucian, Collins, Paula, Colombo, Tommaso, Comerma-Montells, Albert, Contu, Andrea, Cooke, Naomi, Coombs, George, Coquereau, Samuel, Corti, Gloria, Costa Sobral, Cayo Mar, Couturier, Benjamin, Craik, Daniel Charles, Crkovská, Jana, Crocombe, Andrew, Cruz Torres, Melissa Maria, Currie, Robert, Da Silva, Cesar Luiz, Dall'Occo, Elena, Dalseno, Jeremy, D'Ambrosio, Carmelo, Danilina, Anna, d'Argent, Philippe, 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, de Vries, Jacco, Dean, Cameron Thomas, Dean, William, Decamp, Daniel, Del Buono, Luigi, Delaney, Blaise, Dembinski, Hans Peter, Demmer, Moritz, Dendek, Adam, Denysenko, Vadym, Derkach, Denis, Deschamps, Olivier, Desse, Fabrice, Dettori, Francesco, Dey, Biplab, Di Canto, Angelo, Di Nezza, Pasquale, Didenko, Sergey, Dijkstra, Hans, Dordei, 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Hilbrand Steffen, Kunde, Gerd Joachim, Kuonen, Axel Kevin, Kvaratskheliya, Tengiz, Lacarrere, Daniel, Lafferty, George, Lai, Adriano, Lancierini, Davide, Lane, John Jake, Lanfranchi, Gaia, Langenbruch, Christoph, Latham, Thomas, Lazzari, Federico, Lazzeroni, Cristina, Le Gac, Renaud, Lefèvre, Regis, Leflat, Alexander, Lemaitre, Florian, Leroy, Olivier, Lesiak, Tadeusz, Leverington, Blake, Li, Hengne, Li, Xuan, Li, Yiming, Li, Zhuoming, Liang, Xixin, Lindner, Rolf, Lionetto, Federica, Lisovskyi, Vitalii, Liu, Guoming, Liu, Xuesong, Loh, David, Loi, Angelo, Lomba Castro, Julian, Longstaff, Iain, Lopes, Jose, Loustau, Guillermo, Lovell, George Holger, Lu, Yu, Lucchesi, Donatella, Lucio Martinez, Miriam, Luo, Yiheng, Lupato, Anna, Luppi, Eleonora, Lupton, Oliver, Lusiani, Alberto, Lyu, Xiao-Rui, Maccolini, Serena, Machefert, Frederic, Maciuc, Florin, Macko, Vladimir, Mackowiak, Patrick, Maddrell-Mander, Samuel, Madhan Mohan, Lakshan Ram, Maev, Oleg, Maevskiy, Artem, Maguire, Kevin, 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Otalora Goicochea, Juan Martin, Ovsiannikova, Tatiana, Owen, Patrick, Oyanguren, Maria Aranzazu, Pais, Preema Rennee, Pajero, Tommaso, Palano, Antimo, Palutan, Matteo, Panshin, Gennady, Papanestis, Antonios, Pappagallo, Marco, Pappalardo, Luciano, Parker, William, Parkes, Christopher, Passaleva, Giovanni, Pastore, Alessandra, Patel, Mitesh, Patrignani, Claudia, Pearce, Alex, Pellegrino, Antonio, Pepe Altarelli, Monica, Perazzini, Stefano, Pereima, Dmitrii, Perret, Pascal, Pescatore, Luca, Petridis, Konstantinos, Petrolini, Alessandro, Petrov, Aleksandr, Petrucci, Stefano, Petruzzo, Marco, Pietrzyk, Boleslaw, Pietrzyk, Guillaume, Pikies, Malgorzata, Pili, Martina, Pinci, Davide, Pinzino, Jacopo, Pisani, Flavio, Piucci, Alessio, Placinta, Vlad-Mihai, Playfer, Stephen, Plews, Jonathan, Plo Casasus, Maximo, Polci, Francesco, Poli Lener, Marco, Poliakova, Mariia, Poluektov, Anton, Polukhina, Natalia, Polyakov, Ivan, Polycarpo, Erica, Pomery, Gabriela Johanna, Ponce, Sebastien, Popov, 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Diego, Tou, Da Yu, Tournefier, Edwige, Traill, Murdo, Tran, Minh Tâm, Trisovic, Ana, Tsaregorodtsev, Andrei, Tuci, Giulia, Tully, Alison, Tuning, Niels, Ukleja, Artur, Usachov, Andrii, Ustyuzhanin, Andrey, Uwer, Ulrich, Vagner, Alexander, Vagnoni, Vincenzo, Valassi, Andrea, Valenti, Giovanni, van Beuzekom, Martinus, Van Hecke, Hubert, van Herwijnen, Eric, Van Hulse, Charlotte Barbara, van Tilburg, Jeroen, van Veghel, Maarten, Vazquez Gomez, Ricardo, Vazquez Regueiro, Pablo, Vázquez Sierra, Carlos, Vecchi, Stefania, Velthuis, Jaap, Veltri, Michele, Venkateswaran, Aravindhan, Vernet, Maxime, Veronesi, Michele, Vesterinen, Mika, Viana Barbosa, Joao Vitor, Vieira, Daniel, Vieites Diaz, Maria, Viemann, Harald, Vilasis-Cardona, Xavier, Vitkovskiy, Arseniy, Vollhardt, Achim, Vom Bruch, Dorothea, Vorobyev, Alexey, Vorobyev, Vitaly, Voropaev, Nikolai, Waldi, Roland, Walsh, John, Wang, Jianqiao, Wang, Jike, Wang, Jianchun, Wang, Mengzhen, Wang, Yilong, Wang, Zhenzi, Ward, David, Wark, Heather Mckenzie, Watson, Nigel, Websdale, David, Weiden, Andreas, Weisser, Constantin, Westhenry, Benedict Donald C, White, Dylan James, Whitehead, Mark, Wiedner, Dirk, Wilkinson, Guy, Wilkinson, Michael, Williams, Ifan, Williams, Mike, Williams, Mark Richard James, Williams, Timothy, Wilson, Fergus, Winn, Michael Andreas, Wislicki, Wojciech, Witek, Mariusz, Wormser, Guy, Wotton, Stephen, Wu, Hangyi, Wyllie, Kenneth, Xiang, Zhiyu, Xiao, Dong, Xie, Yuehong, Xing, Hongxi, Xu, Ao, Xu, Li, Xu, Menglin, Xu, Qingnian, Xu, Zhirui, Xu, Zehua, Yang, Zhenwei, Yang, Zishuo, Yao, Yuezhe, Yeomans, Lauren Emma, Yin, Hang, Yu, Jiesheng, Yuan, Xuhao, Yushchenko, Oleg, Zarebski, Kristian Alexander, Zavertyaev, Mikhail, Zdybal, Milosz, Zeng, Ming, Zhang, Dongliang, Zhang, Liming, Zhang, Shunan, Zhang, Wen Chao, Zhang, Yanxi, Zhelezov, Alexey, Zheng, Yangheng, Zhou, Xiaokang, Zhou, Yixiong, Zhu, Xianglei, Zhukov, Valery, Zonneveld, Jennifer Brigitta, Zucchelli, Stefano
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.102.012011
http://cds.cern.ch/record/2710473
Descripción
Sumario:A measurement of the branching fraction of the decay $B_s^0 \to K_S^0 K_S^0$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 fb$^{-1}$ collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be$$ \mathcal{B}(B_s^0 \to K_S^0 K_S^0) = [8.3 \pm 1.6 (\rm{stat}) \pm 0.9 (\rm{syst}) \pm 0.8 (\rm{norm}) \pm 0.3 (f_s/f_d)] \times 10^{-6}, $$ where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the $B^0 \to \phi K_S^0$ branching fraction and the ratio of hadronization fractions $f_s/f_d$. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay $B^0 \to K_S^0 K_S^0$ is performed relative to that of the $B_s^0 \to K_S^0 K_S^0$ channel, and is found to be $$\frac{\mathcal{B}(B^0 \to K_S^0 K_S^0)}{\mathcal{B}(B_s^0 \to K_S^0 K_S^0)} = [7.5 \pm 3.1 (\rm{stat}) \pm 0.5 (\rm{syst}) \pm 0.3 (f_s/f_d)] \times 10^{-2}.$$