Measurement of CP Violation in B^{0}→ψ(→ℓ^{+}ℓ^{-})K_{S}^{0}(→π^{+}π^{-}) Decays.
R Aaij, A S W Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, P Adlarson, H Afsharnia, C Agapopoulou, C A Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, R Amalric, S Amato, J L Amey, Y Amhis, L An, L Anderlini, M Andersson, A Andreianov, P Andreola, M Andreotti, D Andreou, D Ao, F Archilli, A Artamonov, M Artuso, E Aslanides, M Atzeni, B Audurier, D Bacher, I Bachiller Perea, S Bachmann, M Bachmayer, J J Back, A Bailly-Reyre, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista de Souza Leite, M Barbetti, I R Barbosa, R J Barlow, S Barsuk, W Barter, M Bartolini, F Baryshnikov, J M Basels, G Bassi, B Batsukh, A Battig, A Bay, A Beck, M Becker, F Bedeschi, I B 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 C Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, J Bex, Ia Bezshyiko, J Bhom, L Bian, M S Bieker, N V Biesuz, P Billoir, A Biolchini, M Birch, F C R Bishop, A Bitadze, A Bizzeti, M P Blago, T Blake, F Blanc, J E Blank, S Blusk, D Bobulska, V Bocharnikov, J A Boelhauve, O Boente Garcia, T Boettcher, A Bohare, A Boldyrev, C S Bolognani, R Bolzonella, N Bondar, F Borgato, S Borghi, M Borsato, J T Borsuk, S A Bouchiba, T J V Bowcock, A Boyer, C Bozzi, M J Bradley, S Braun, A Brea Rodriguez, N Breer, J Brodzicka, A Brossa Gonzalo, J Brown, D Brundu, A Buonaura, L Buonincontri, A T Burke, C Burr, A Bursche, A Butkevich, J S Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, S Cali, M Calvi, M Calvo Gomez, J Cambon Bouzas, P Campana, D H Campora Perez, A F Campoverde Quezada, S Capelli, L Capriotti, A Carbone, L Carcedo Salgado, 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 J Chadwick, I Chahrour, M G Chapman, M Charles, Ph Charpentier, C A 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 F Cicala, X Cid Vidal, G Ciezarek, P Cifra, P E L Clarke, M Clemencic, H V Cliff, J Closier, J L Cobbledick, C Cocha Toapaxi, V Coco, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, A Comerma-Montells, L Congedo, A Contu, N Cooke, I Corredoira, A Correia, G Corti, J J Cottee Meldrum, B Couturier, D C Craik, M Cruz Torres, R Currie, C L Da Silva, S Dadabaev, L Dai, X Dai, E Dall'Occo, J Dalseno, C D'Ambrosio, J Daniel, A Danilina, P d'Argent, A Davidson, J E 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 M De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, F De Vellis, J A de Vries, C T Dean, F Debernardis, D Decamp, V Dedu, L Del Buono, B Delaney, H-P Dembinski, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, I Diachkov, S Didenko, S Ding, V Dobishuk, A D Docheva, A Dolmatov, C Dong, A M Donohoe, F Dordei, A C Dos Reis, L Douglas, A G Downes, W Duan, P Duda, M W Dudek, L Dufour, V Duk, P Durante, M M Duras, J M Durham, D Dutta, A Dziurda, A Dzyuba, S Easo, E Eckstein, U Egede, A Egorychev, 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 N Falcao, Y Fan, B Fang, L Fantini, M Faria, K Farmer, S Farry, D Fazzini, L Felkowski, M Feng, M Feo, M Fernandez Gomez, A D Fernez, F Ferrari, L Ferreira Lopes, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, R A Fini, M Fiorini, M Firlej, K M Fischer, D S Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, L F Foreman, R Forty, D Foulds-Holt, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, D A Friday, L Frontini, J Fu, Q Fuehring, Y Fujii, T Fulghesu, E Gabriel, G Galati, M D Galati, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, H Gao, R Gao, Y Gao, Y Gao, M Garau, L M Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, F A Garcia Rosales, L Garrido, C Gaspar, R E Geertsema, L L Gerken, E Gersabeck, M Gersabeck, T Gershon, L Giambastiani, F I Giasemis, V Gibson, H K Giemza, A L Gilman, M Giovannetti, A Gioventù, P Gironella Gironell, C Giugliano, M A Giza, K Gizdov, E L Gkougkousis, F C Glaser, V V Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, J A Gooding, I V Gorelov, C Gotti, J P Grabowski, L A Granado Cardoso, E Graugés, E Graverini, L Grazette, G Graziani, A T Grecu, L M Greeven, N A Grieser, L Grillo, S Gromov, C Gu, M Guarise, M Guittiere, V Guliaeva, P A Günther, A-K Guseinov, E Gushchin, Y Guz, T Gys, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, J Haimberger, S C Haines, M Hajheidari, T Halewood-Leagas, M M Halvorsen, P M Hamilton, J Hammerich, Q Han, X Han, S Hansmann-Menzemer, L Hao, N Harnew, T Harrison, M Hartmann, C Hasse, M Hatch, J He, K Heijhoff, F Hemmer, C Henderson, R D L Henderson, A M Hennequin, K Hennessy, L Henry, J Herd, J Heuel, A Hicheur, D Hill, M Hilton, S E Hollitt, J Horswill, R Hou, Y Hou, N Howarth, J Hu, J Hu, W Hu, X Hu, W Huang, X Huang, W Hulsbergen, R J 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 J Jaimes Elles, S Jakobsen, E Jans, B K Jashal, A Jawahery, V Jevtic, E Jiang, X Jiang, Y Jiang, Y J Jiang, M John, D Johnson, C R Jones, T P Jones, S Joshi, B Jost, N Jurik, I Juszczak, D Kaminaris, S Kandybei, Y Kang, M Karacson, D Karpenkov, M Karpov, A M Kauniskangas, J W Kautz, F Keizer, D M Keller, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, G Khreich, T Kirn, V S Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, M R 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, M Kreps, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, J Kubat, S Kubis, W Kucewicz, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, B K Kutsenko, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, C Landesa Gomez, J J Lane, R Lane, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, C Lazzeroni, R Le Gac, S H Lee, R Lefèvre, A Leflat, S Legotin, O Leroy, T Lesiak, B Leverington, A Li, H Li, K Li, L Li, P Li, P-R Li, S Li, T Li, T Li, Y Li, Z Li, Z Lian, X Liang, C Lin, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, K Liu, Q Liu, S Liu, Y Liu, Y Liu, A Lobo Salvia, A Loi, J Lomba Castro, T Long, I Longstaff, J H Lopes, A Lopez Huertas, S López Soliño, G H Lovell, Y Lu, C Lucarelli, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, K Lynch, X-R Lyu, R Ma, S Maccolini, F Machefert, F Maciuc, I Mackay, V Macko, L R Madhan Mohan, M M Madurai, A Maevskiy, D Magdalinski, D Maisuzenko, M W Majewski, J J Malczewski, S Malde, B Malecki, A Malinin, T Maltsev, G Manca, G Mancinelli, C Mancuso, R Manera Escalero, D Manuzzi, C A Manzari, D Marangotto, J F Marchand, U Marconi, S Mariani, C Marin Benito, J Marks, A M Marshall, P J 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 R Mattioli, A Mauri, E Maurice, J Mauricio, M Mazurek, M McCann, L Mcconnell, T H McGrath, N T McHugh, A McNab, R McNulty, B Meadows, G Meier, D Melnychuk, M Merk, A Merli, L Meyer Garcia, D Miao, H Miao, M Mikhasenko, D A Milanes, M Milovanovic, M-N Minard, A Minotti, E Minucci, T Miralles, S E Mitchell, B Mitreska, D S Mitzel, A Modak, A Mödden, R A Mohammed, R D Moise, S Mokhnenko, T Mombächer, M Monk, I A Monroy, S Monteil, A Morcillo Gomez, G 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A measurement of time-dependent CP violation in the decays of B^{0} and B[over ¯]^{0} mesons to the final states J/ψ(→μ^{+}μ^{-})K_{S}^{0}, ψ(2S)(→μ^{+}μ^{-})K_{S}^{0} and J/ψ(→e^{+}e^{-})K_{S}^{0} with K_{S}^{0}→π^{+}π^{-} is presented. The data correspond to an integrated luminosity of 6 fb^{-1} collected at a center-of-mass energy of sqrt[s]=13 TeV with the LHCb detector. The CP-violation parameters are measured to be S_{ψK_{S}^{0}}=0.717±0.013(stat)±0.008(syst) and C_{ψK_{S}^{0}}=0.008±0.012(stat)±0.003(syst). This measurement of S_{ψK_{S}^{0}} represents the most precise single measurement of the CKM angle β to date and is more precise than the current world average. In addition, measurements of the CP-violation parameters of the individual channels are reported and a combination with the LHCb Run 1 measurements is performed.
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