First Measurement of Time-Dependent CP Violation in the Flavor-Changing Neutral-Current Decay B0 → KS0μ+μ-
R Aaij, A. Abdelmotteleb, C. Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, P Adlarson, H. Afsharnia, C Agapopoulou, C. Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F. Alessio, M P Alexander, A. Alfonso Albero, Z. Aliouche, P. Alvarez Cartelle, R Amalric, S Amato, J. Amey, Y. Amhis, L An, L Anderlini, M Andersson, A. Andreianov, M Andreotti, D. Andreou, D Ao, F Archilli, A Artamonov, M Artuso, E Aslanides, M Atzeni, B Audurier, I. Bachiller Perea, S Bachmann, M Bachmayer, J. Back, A. Bailly-reyre, P. Baladron Rodriguez, V Balagura, W Baldini, J. Baptista de Souza Leite, M Barbetti, R. Barlow, S Barsuk, W Barter, M. Bartolini, F. Baryshnikov, J. Basels, G. Bassi, B Batsukh, A. Battig, A Bay, A Beck, M Becker, F Bedeschi, I. Bediaga, A. Beiter, S Belin, V. Bellee, K Belous, I Belov, I Belyaev, G Benane, G Bencivenni, E Ben-Haim, A Berezhnoy, R. Bernet, S. Bernet Andres, D. Berninghoff, H. Bernstein, C. Bertella, A Bertolin, C. Betancourt, F Betti, I. Bezshyiko, S. Bhasin, J Bhom, L. Bian, M. Bieker, N. Biesuz, P. Billoir, A Biolchini, M Birch, F. Bishop, A Bitadze, A Bizzeti, M. Blago, T Blake, F Blanc, J. Blank, S Blusk, D. Bobulska, J. Boelhauve, O. Boente Garcia, T Boettcher, A Boldyrev, C. Bolognani, R Bolzonella, N Bondar, F Borgato, S Borghi, M Borsato, J. Borsuk, S. Bouchiba, T. Bowcock, A Boyer, C Bozzi, M. Bradley, S. Braun, A. Brea Rodriguez, J Brodzicka, A. Brossa Gonzalo, J Brown, D Brundu, A. Buonaura, L. Buonincontri, A. Burke, C Burr, A. Bursche, A. Butkevich, J. Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, S. Cali, M Calvi, M. Calvo Gomez, P Campana, D. Campora Perez, A. Campoverde Quezada, S Capelli, L Capriotti, A Carbone, R Cardinale, A Cardini, P Carniti, L Carus, A. Casais Vidal, R Caspary, G Casse, M Cattaneo, G Cavallero, V Cavallini, S Celani, J. Cerasoli, D. Cervenkov, A. Chadwick, I Chahrour, M. Chapman, M Charles, P. Charpentier, C. Chavez Barajas, M Chefdeville, C. Chen, S. Chen, A Chernov, S Chernyshenko, V Chobanova, S. Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, M. Cicala, X. Cid Vidal, G Ciezarek, P Cifra, G. Ciullo, P. Clarke, M Clemencic, H. Cliff, J Closier, J. Cobbledick, V Coco, J Cogan, E Cogneras, L Cojocariu, P. Collins, T Colombo, L Congedo, A Contu, N Cooke, I Corredoira, G Corti, B Couturier, D. Craik, M. Cruz Torres, R Currie, C. Da Silva, S Dadabaev, L Dai, X Dai, E Dall’Occo, J Dalseno, C D’Ambrosio, J Daniel, A. Danilina, P. d'Argent, J. Davies, A. Davis, O. De Aguiar Francisco, J de Boer, K De Bruyn, S De Capua, M De Cian, U. De Freitas Carneiro Da Graca, E De Lucia, J. De Miranda, L De Paula, M De Serio, D. De Simone, P De Simone, F De Vellis, J. de Vries, C. Dean, F Debernardis, D Decamp, V. Dedu, L Del Buono, B Delaney, H. Dembinski, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, I Diachkov, S Didenko, L. Dieste Maronas, S Ding, V Dobishuk, A. Dolmatov, C Dong, A. Donohoe, F Dordei, A. dos Reis, L. Douglas, A. Downes, P Duda, M. Dudek, L Dufour, V Duk, P Durante, M. Duras, J. Durham, D. Dutta, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, C. Eirea Orro, S Eisenhardt, E Ejopu, S. Ek-In, L Eklund, M Elashri, J Ellbracht, S Ely, A Ene, E. Epple, S. Escher, J Eschle, S Esen, T Evans, F Fabiano, L. Falcao, Y Fan, B Fang, L Fantini, M Faria, S. Farry, D Fazzini, L Felkowski, M Feo, M. Fernandez Gomez, A. Fernez, F Ferrari, L. Ferreira Lopes, F. Ferreira Rodrigues, S. Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, R. Fini, M Fiorini, M Firlej, K. Fischer, D. Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F. Fontanelli, R. Forty, D Foulds-Holt, V. Franco Lima, M. Franco Sevilla, M Frank, E Franzoso, G. Frau, C Frei, D. Friday, L. Frontini, J. Fu, Q. Fuehring, T Fulghesu, E. Gabriel, G Galati, M. Galati, A. Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, Y. Gao, M. Garau, L. Garcia Martin, P. Garcia Moreno, J. García Pardiñas, B. Garcia Plana, F. Garcia Rosales, L Garrido, C Gaspar, R. Geertsema, D. Gerick, L. Gerken, E Gersabeck, M Gersabeck, T Gershon, L. Giambastiani, V Gibson, H. Giemza, A. Gilman, M Giovannetti, A Gioventù, P. Gironella Gironell, C. Giugliano, M. Giza, K. Gizdov, E. Gkougkousis, V. Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A. Gomes, S. Gomez Fernandez, F. Goncalves Abrantes, M Goncerz, G Gong, I. Gorelov, C Gotti, J. Grabowski, T. Grammatico, L. Granado Cardoso, E Graugés, E Graverini, G Graziani, A. Grecu, L. Greeven, N. Grieser, L Grillo, S Gromov, B. Gruberg Cazon, C Gu, M. Guarise, M. Guittiere, P. Günther, E Gushchin, A. Guth, Y Guz, T Gys, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, J. Haimberger, S. Haines, T. Halewood-leagas, M. Halvorsen, P. Hamilton, J Hammerich, Q Han, X Han, E. Hansen, S Hansmann-Menzemer, L Hao, N Harnew, T. Harrison, C. Hasse, M. Hatch, J He, K. Heijhoff, F Hemmer, C Henderson, R Henderson, A. Hennequin, K Hennessy, L Henry, J Herd, J Heuel, A Hicheur, D W Hill, M. Hilton, S. Hollitt, J Horswill, R Hou, Y Hou, J. Hu, W Hu, X Hu, W. Huang, X. Huang, W Hulsbergen, R. Hunter, M Hushchyn, D Hutchcroft, P. Ibis, M Idzik, D Ilin, P Ilten, A. Inglessi, A Iniukhin, A Ishteev, K Ivshin, R. Jacobsson, H Jage, S. Jaimes Elles, S Jakobsen, E Jans, B. Jashal, A Jawahery, V Jevtic, E Jiang, X Jiang, Y Jiang, M John, D. Johnson, C. Jones, T. Jones, B Jost, N Jurik, I Juszczak, S Kandybei, Y Kang, M Karacson, D. Karpenkov, M. Karpov, J. Kautz, F Keizer, D I Keller, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, G Khreich, T Kirn, V. Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, M. Kmiec, S Koliiev, L Kolk, A. Kondybayeva, A Konoplyannikov, P Kopciewicz, R. Kopecna, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, A Kozachuk, P Kravchenko, L Kravchuk, R. Krawczyk, M Kreps, S. Kretzschmar, P Krokovny, W Krupa, W Krzemien, J. Kubat, S Kubis, W. Kucewicz, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, D Lacarrere, G. Lafferty, A Lai, A Lampis, D Lancierini, C. Landesa Gomez, J. Lane, R. Lane, C Langenbruch, J Langer, O. Lantwin, T Latham, F Lazzari, M. Lazzaroni, R Le Gac, S. Lee, R Lefèvre, A Leflat, S Legotin, P. Lenisa, O Leroy, T Lesiak, B Leverington, A Li, H. Li, K Li, P. Li, S. Li, T. Li, Y. Li, Z. Li, X Liang, C Lin, T Lin, R Lindner, V. Lisovskyi, R Litvinov, G. Liu, H. Liu, Q. Liu, S. Liu, A. Lobo Salvia, A Loi, R. Lollini, J. Lomba Castro, I. Longstaff, J A M Lopes, A. Lopez Huertas, S. López Soliño, G. Lovell, Y. Lu, C. Lucarelli, D Lucchesi, S. Luchuk, M. Lucio Martinez, V. Lukashenko, Y. Luo, A Lupato, E Luppi, A. Lusiani, K Lynch, X. Lyu, R. Ma, S Maccolini, F Machefert, F Maciuc, I Mackay, V. Macko, L. Madhan Mohan, A. Maevskiy, D Maisuzenko, M. Majewski, J. Malczewski, S Malde, B. Malecki, A Malinin, T Maltsev, G Manca, G Mancinelli, C Mancuso, R. Manera Escalero, D Manuzzi, C. Manzari, D Marangotto, J. Marchand, U Marconi, S Mariani, C. Marin Benito, J Marks, A. Marshall, P. Marshall, G Martelli, G Martellotti, L Martinazzoli, M Martinelli, D. Martinez Santos, F. Martinez Vidal, A Massafferri, M. Materok, R Matev, A Mathad, V Matiunin, C Matteuzzi, K. Mattioli, A Mauri, E Maurice, J Mauricio, M Mazurek, M McCann, L. Mcconnell, T. McGrath, N. McHugh, A McNab, R McNulty, J. Mead, B Meadows, G Meier, D Melnychuk, S. Meloni, M Merk, A Merli, L. Meyer Garcia, D Miao, M Mikhasenko, D. Milanes, E. Millard, M. Milovanovic, M. Minard, A Minotti, T Miralles, S. Mitchell, B Mitreska, D. Mitzel, A. Mödden, R. Mohammed, R. Moise, S. Mokhnenko, T Mombächer, M Monk, I. Monroy, S Monteil, G Morello, M. Morello, M. Morgenthaler, J Moron, A. Morris, R Mountain, H Mu, E Muhammad, F Muheim, M Mulder, K. Müller, C. Murphy, D. Murray, R Murta, P. Muzzetto, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, P Neustroev, R. Newcombe, J Nicolini, D Nicotra, E. Niel, S. Nieswand, N Nikitin, N. Nolte, C Normand, J. Novoa Fernandez, G Nowak, C Nunez, A Oblakowska-Mucha, V Obraztsov, T Oeser, S. Okamura, R Oldeman, F Oliva, C. Onderwater, R. O'Neil, J. Otalora Goicochea, T. Ovsiannikova, P Owen, A Oyanguren, O Ozcelik, K. Padeken, B Pagare, P. Pais, T Pajero, A Palano, M Palutan, Y Pan, G Panshin, L Paolucci, A Papanestis, M Pappagallo, L. Pappalardo, C Pappenheimer, W. Parker, C Parkes, B. Passalacqua, G Passaleva, A Pastore, M Patel, C Patrignani, C. Pawley, A Pellegrino, M. Pepe Altarelli, S Perazzini, D Pereima, A. Pereiro Castro, P Perret, K Petridis, A Petrolini, A. Petrov, S. Petrucci, M. Petruzzo, H. Pham, A. Philippov, R. Piandani, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, M. Pili, D Pinci, F Pisani, M Pizzichemi, V. Placinta, J. Plews, M. Plo Casasus, F Polci, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, S Ponce, D Popov, S Poslavskii, K Prasanth, L. Promberger, C Prouve, V Pugatch, V. Puill, G Punzi, H Qi, W Qian, N Qin, S Qu, R Quagliani, N. Raab, B. Rachwal, J. Rademacker, R. Rajagopalan, M. Rama, M. Ramos Pernas, M. Rangel, F Ratnikov, G Raven, M. Rebollo De Miguel, F Redi, J Reich, F Reiss, C. Remon Alepuz, Z Ren, P. Resmi, R Ribatti, A. Ricci, S Ricciardi, K Richardson, M Richardson-Slipper, K Rinnert, P Robbe, G. Robertson, A. Rodrigues, E Rodrigues, E. Rodriguez Fernandez, J. Rodriguez Lopez, E. Rodriguez Rodriguez, D. Rolf, A. Rollings, P Roloff, V Romanovskiy, M. Romero Lamas, A. Romero Vidal, J. Roth, M Rotondo, M. Rudolph, T. Ruf, R. Ruiz Fernandez, J. Ruiz Vidal, A. Ryzhikov, J. Ryzka, J. Saborido Silva, N Sagidova, N Sahoo, B Saitta, M Salomoni, C. Sanchez Gras, I Sanderswood, R Santacesaria, C. Santamarina Rios, M Santimaria, E Santovetti, D Saranin, G Sarpis, M Sarpis, A. Sarti, C Satriano, A Satta, M Saur, D Savrina, H Sazak, L. Scantlebury Smead, A Scarabotto, S Schael, S Scherl, M Schiller, H Schindler, M Schmelling, B Schmidt, S Schmitt, O Schneider, A Schopper, M. Schubiger, S. Schulte, M. Schune, R. Schwemmer, B Sciascia, A Sciuccati, S Sellam, A Semennikov, M. Senghi Soares, A Sergi, N Serra, L Sestini, A Seuthe, Y Shang, D. Shangase, M Shapkin, I Shchemerov, L Shchutska, T Shears, L Shekhtman, Z Shen, S Sheng, V Shevchenko, B Shi, E. Shields, Y Shimizu, E Shmanin, R Shorkin, J. Shupperd, B. Siddi, R. Silva Coutinho, G Simi, S Simone, M. Singla, N Skidmore, R. Skuza, T Skwarnicki, M. Slater, J. Smallwood, J. Smeaton, E. Smith, K Smith, M R Smith, A. Snoch, L. Soares Lavra, M. Sokoloff, F. Soler, A Solomin, A Solovev, I. Solovyev, R Song, F. Souza De Almeida, B. Souza De Paula, B. Spaan, E. Spadaro Norella, E Spedicato, E. Spiridenkov, P Spradlin, V. Sriskaran, F Stagni, M Stahl, S Stahl, S Stanislaus, E. Stein, O Steinkamp, O. Stenyakin, H. Stevens, S. Stone, D Strekalina, Y Su, F Suljik, J Sun, L Sun, Y W Sun, P. Svihra, P. Swallow, K Swientek, A Szabelski, T Szumlak, M. Szymanski, Y Tan, S. Taneja, M. Tat, A Terentev, F. Teubert, E Thomas, D. Thompson, K. Thomson, H Tilquin, V Tisserand, S T’Jampens, M Tobin, L Tomassetti, G Tonani, X Tong, D. Torres Machado, D. Tou, S. Trilov, C Trippl, G Tuci, N Tuning, A Ukleja, D. Unverzagt, A Usachov, A Ustyuzhanin, U. Uwer, A. Vagner, V Vagnoni, A. Valassi, G Valenti, N. Valls Canudas, M. Van Dijk, H Van Hecke, E van Herwijnen, C. Van Hulse, M van Veghel, R. Vazquez Gomez, P. Vazquez Regueiro, C. Vázquez Sierra, S Vecchi, J. Velthuis, M Veltri, A Venkateswaran, M. Veronesi, M Vesterinen, D. Vieira, M. Vieites Diaz, X Vilasis-Cardona, E. Vilella Figueras, A Villa, P Vincent, F. Volle, D. vom Bruch, A. Vorobyev, V. Vorobyev, N Voropaev, K Vos, C Vrahas, J Walsh, E. Walton, G Wan, C Wang, G. Wang, J. Wang, M. Wang, R Wang, X. Wang, Y. Wang, Z. Wang, J. Ward, N. Watson, D Websdale, Y Wei, B. Westhenry, D. White, M Whitehead, A. Wiederhold, D Wiedner, G Wilkinson, M. Wilkinson, I. Williams, M Williams, R Williams, F. Wilson, W Wislicki, M Witek, L Witola, C. Wong, G Wormser, S A Wotton, H Wu, J Wu, K Wyllie, Z Xiang, Y. Xie, A Xu, J. Xu, L Xu, M Xu, Qi Xu, Z Xu, D. Yang, S. Yang, X Yang, Y Yang, Z Yang, L. Yeomans, V Yeroshenko, H Yeung, H Yin, J Yu, X Yuan, E Zaffaroni, M Zavertyaev, M Zdybal, M Zeng, C. Zhang, D. Zhang, L. Zhang, S. Zhang, Y. Zhang, Y Zhao, A. Zharkova, A Zhelezov, Y Zheng, T Zhou, X Zhou, Y. Zhou, V Zhovkovska, X Zhu, Z. Zhu, V Zhukov, Q Zou, S. Zucchelli, D Zuliani, G Zunica
Le résumé fourni par la source
A flavor-tagged time-dependent analysis of B0→KS0μ+μ− decays is performed across the full dimuon mass range excluding the J/ψ and ψ(2S) resonance regions. The analysis uses proton-proton collision data collected by the LHCb experiment in 2011–2018 at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The CP violation parameters are determined to be C=−0.13±0.32±0.04 , S=+0.82±0.29±0.05 , where the first uncertainties are statistical and the second are systematic. The results are consistent with the standard model prediction. This is the first experimental study of time-dependent CP violation in b →sl+l− processes.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.