Accès ouvert déclaré
2024
preprint
First evidence for direct CP violation in beauty to charmonium decays
R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. Aidala, Ziad Ajaltouni, S. Akar, Kazuyoshi Akiba, P. Albicocco, J. Albrecht, F. Alessio, M. Alexander, Zakariya Aliouche, P. Álvarez Cartelle, Renaud Amalric, S. Amato, J. L. Amey, Yasmine Amhis, Liupan An, L. Anderlini, M. Andersson, A. Andreianov, P. Andreola, Mirco Andreotti, D. Andreou, Alessia Anelli, D. Ao, F. Archilli, Matteo Argenton, S. Arguedas Cuendis, A. Artamonov, M. Artuso, E. Aslanides, Rita Ataíde da Silva, M. Atzeni, Benjamin Audurier, D. Bacher, Irene Bachiller Perea, S. Bachmann, Marie Bachmayer, J. J. Back, P. Baladrón Rodríguez, V. Balagura, Anna Balboni, W. Baldini, Luca Balzani, Haoran Bao, J. Baptista de Souza Leite, Carlos Javier Barbero Pretel, M. Barbetti, I. R. Barbosa, R. J. Barlow, Mikhail Barnyakov, Sergey Barsuk, W. Barter, M. Bartolini, Justin Bartz, J. M. Basels, Saliha Bashir, G. Bassi, B. Batsukh, Piera Battista, A. Bay, A. Beck, M. Becker, F. Bedeschi, I. Bediaga, Noah Albin Behling, S. Belin, V. Bellée, K. Belous, I. Belov, I. Belyaev, Gaya Benane, G. Bencivenni, Eli Ben-Haim, A. Berezhnoy, R. Bernet, Sergi Bernet Andres, A. Bertolin, C. Betancourt, F. Betti, Ia. Bezshyiko, J. Bhom, M. S. Bieker, N. V. Biesuz, P. Billoir, A. Biolchini, M. Birch, F. C. R. Bishop, A. Bitadze, Andrea Bizzeti, T. Blake, F. Blanc, Jonah Evan Blank, S. Blusk, Vladimir Bocharnikov, J. A. Boelhauve, O. Boente García, Thomas Boettcher, A. Bohare, A. S. Boldyrev, C. S. Bolognani, R. Bolzonella, Riccardo Bonacci, N. Bondar, Aleksandar Bordelius, F. Borgato, S. Borghi, M. Borsato, J. T. Borsuk, Sonia Amina Bouchiba, Marcelo Bovill, T. J. V. Bowcock, A. Boyer, C. Bozzi, A. Brea Rodríguez, Nils Breer, Jolanta Brodzicka, A. Brossa Gonzalo, James David Brown, D. Brundu, E. Buchanan, A. Buonaura, Laura Buonincontri, A. T. Burke, C. Burr, J. S. Butter, Jan Buytaert, W. Byczynski, S. Cadeddu, Hong Cai, Alois Caillet, Roberto Calabrese, Saul Calderon Ramirez, Lukas Calefice, S. Cali, M. Calvi, M. Calvo Gomez, P. Camargo Magalhaes, Jose Ivan Cambon Bouzas, P. Campana, D. H. Cámpora Pérez, A. Campoverde, S. Capelli, L. Capriotti, Ronald Gerardo Caravaca-Mora, A. Carbone, Lidia Carcedo Salgado, R. Cardinale, A. Cardini, P. Carniti, Leon David Carus, A. Casais Vidal, R. Caspary, Gianluigi Casse, M. Cattaneo, G. Cavallero, V. Cavallini, S. Celani, D. Červenkov, Sara Cesare, A. J. Chadwick, Ibrahim Chahrour, Matthew Charles, Philippe Charpentier, Evridki Chatzianagnostou, Maximilien Chefdeville, 陈晨, S. Chen, Zewen Chen, Aleksei Chernov, S. Chernyshenko, Xenofon Chiotopoulos, V. Chobanova, Serhii Cholak, M. Chrząszcz, A. Chubykin, V. Chulikov, P. Ciambrone, X. Cid Vidal, G. Ciezarek, P. Cifra, Peter Clarke, Marco Clemencic, H. V. Cliff, Joel Closier, Carlos Eduardo Cocha Toapaxi, V. Coco, Julien Cogan, Eric Cogneras, Lucian Cojocariu, Paula Collins, T. Colombo, M. Colonna, A. Comerma-Montells, L. Congedo, A. Contu, N. Cooke, I. Corredoira, Anthony Correia, G. Corti, Josephine Jane Cottee Meldrum, B. Couturier, D. C. Craik, M. Cruz Torres, R. Currie, Cesar Luiz da Silva, S. Dadabaev, Lingyun Dai, X. Dai, Elena Dall'Occo, J. Dalseno, Carmelo d'Ambrosio, J. Daniel, A. Danilina, P. d’Argent, Alexander Davidson, J. E. Davies, Adam Davis, Oscar de Aguiar Francisco, Camilla de Angelis, Federico de Benedetti, Jan de Boer, K. De Bruyn, S. De Capua, Michel de Cian, Ulisses de Freitas Carneiro da Graca, Erika de Lucia, J. M. De Miranda, L. De Paula, Marilisa de Serio, P. De Simone, F. De Vellis, Jacco de Vries, Francesco Debernardis, Vlad-George Dedu, Sam Michael Dekkers, Luigi del Buono, B. Delaney, H.-P. Dembinski, Jianqiao Deng, V. Denysenko, O. Deschamps, F. Dettori, B. Dey, I. Diachkov, S. Didenko, S. Ding, Lucas Dittmann, Vasyl Dobishuk, A. D. Docheva, C. Dong, A. M. Donohoe, F. Dordei, Alberto dos Reis, Andrew Jay Dowling, Weisong Duan, P. Duda, M. W. Dudek, L. Dufour, V. Duk, P. Durante, M. M. Duras, J. M. Durham, Ozgur Durmus, A. Dziurda, A. Dzyuba, S. Easo, Ellinor Eckstein, U. Egede, A. Egorychev, V. Egorychev, Stephan Eisenhardt, E. Ejopu, L. Eklund, Mohamed Elashri, Jan Hendrik Ellbracht, S. Ely, A. Ene, Jonas Nathanael Eschle, S. Esen, Timothy Evans, Federica Fabiano, L. N. Falcao, Yanting Fan, Bo Fang, L. Fantini, Maria Faria, K. Farmer, D. Fazzini, Lukasz Jerzy Felkowski, Mingjie Feng, M. Féo, Álvaro Fernández Casaní, Miguel Fernandez Gomez, Alex Daniel Fernez, F. Ferrari, F. Ferreira Rodrigues, Martina Ferrillo, Massimiliano Ferro-Luzzi, S. Filippov, Rosa Anna Fini, M. Fiorini, M. Firlej, Kamil Leszek Fischer, Dillon Scott Fitzgerald, C. Fitzpatrick, T. Fiutowski, Frederic Fleuret, Marianna Fontana, Lucas Arthur Foreman, R. Forty, D. Foulds-Holt, V. Franco Lima, Manuel Franco Sevilla, M. Frank, E. Franzoso, G. Frau, C. Frei, J. Fu, Quentin Fuehring, Yuki Fujii, Tommaso Fulghesu, E. Gabriel, G. Galati, M. D. Galati, Abraham Gallas Torreira, D. Galli, M. Gandelman, P. Gandini, Bilal Ahmad Ganie, Han Gao, Tian-Qi Gao, Yuxi Gao, L. M. Garcia Martin, P. Garcia Moreno, J. García Pardiñas, Kunal Garg, L. Garrido, C. Gaspar, Robbert Erik Geertsema, Louis Lenard Gerken, E. Gersabeck, M. Gersabeck, Timothy Gershon, Simon Ghizzo, Zahra Ghorbanimoghaddam, L. Giambastiani, Fotis Ioannis Giasemis, V. Gibson, H. K. Giemza, A. Gilman, M. Giovannetti, A. Gioventù, Lucas George Girardey, P. Gironella Gironell, C. Giugliano, Maciej Artur Giza, E. L. Gkougkousis, F. C. Glaser, C. Göbel, E. Golobardes, D. Golubkov, Andrey Golutvin, S. Gomez Fernandez, Wojciech Gomułka, F. Goncalves Abrantes, Mateusz Goncerz, Guanghua Gong, J. A. Gooding, I. Gorelov, C. Gotti, J. P. Grabowski, Luis Alberto Granado Cardoso, E. Graugés, E. Graverini, L. Grazette, Giacomo Graziani, A. Grecu, Lex Marinus Greeven, Nathan Allen Grieser, Lucia Grillo, S. Gromov, C. Gu, M. 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Jawahery, Vukan Jevtic, Emily Kaiyin Jiang, X. Jiang, Yi Jiang, M. John, Allen Cris John Rubesh Rajan, D. Johnson, Christopher Jones, Thomas Peter Jones, Salil Joshi, Beat Jost, Juan Jose Juan Castella, N. Jurik, Izabela Juszczak, Dimitrios Kaminaris, S. Kandybei, Michael James Kane, Youen Kang, C. Kar, Matthias Karacson, Dmitrii Karpenkov, Anni Kauniskangas, Jacob William Kautz, M. K. Kazanecki, Floris Keizer, Matthew Kenzie, T. Ketel, B. Khanji, A. Kharisova, Sergei Kholodenko, Gaelle Khreich, T. Kirn, Veronica Soelund Kirsebom, Ouail Kitouni, S. Klaver, N. Kleijne, K. Klimaszewski, M. R. Kmiec, Serhii Koliiev, Lars Kolk, Anatoly Konoplyannikov, P. Kopciewicz, P. Koppenburg, M. Korolev, Igor Kostiuk, O. Kot, S. Kotriakhova, Anastasiia Kozachuk, P. Kravchenko, L. Kravchuk, M. Kreps, P. Krokovny, W. Krupa, W. Krzemień, Oleksandr Kshyvanskyi, Sebastian Antoni Kubis, M. Kucharczyk, V. Kudryavtsev, Evgenia Kulikova, A. Kupść, Bogdan Kutsenko, D. Lacarrère, Paloma Laguarta Gonzalez, A. 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Minucci, Tristan Miralles, Biljana Mitreska, D. S. Mitzel, Atanu Modak, R. A. Mohammed, R. D. Moise, Sergei Mokhnenko, Esteban Felipe Molina Cardenas, Titus Mombächer, Matthew David Monk, Stephane Monteil, G. Morello, M. J. Morello, Maurice Pierre Morgenthaler, J. Moroń, Wouter Morren, A. B. Morris, A. G. Morris, R. Mountain, Hongjie Mu, Zeqing Mu, Emir Muhammad, F. Muheim, M. Mulder, K. Müller, F. Muñoz-Rojas, Rebecca Murta, P. Naik, T. Nakada, R. Nandakumar, Irina Nasteva, M. Needham, N. Néri, S. Neubert, Niko Neufeld, P. Neustroev, Janina Nicolini, D. Nicotra, Elisabeth Maria Niel, N. Nikitin, Qile Niu, Pedro Nogarolli, Piet Nogga, C. Normand, J. Novoa Fernandez, Gabriel Matthew Nowak, C. Nunez, Havva Hasret Nur, Agnieszka Oblakowska-Mucha, V. Obraztsov, Τ. Oeser, S. Okamura, A. Okhotnikov, Oleksandr Okhrimenko, R. Oldeman, Federica Oliva, M. Olocco, C. J. G. Onderwater, R. H. O’Neil, Donata Osthues, J. M. Otalora Goicochea, P. Owen, Maria Aranzazu Oyanguren, Ö. 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6Institutions déclarées
2Pays d’affiliation déclarés
Rattachement africain : fr, de.
Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The $C\!P$ asymmetry and branching fraction of the CKM-suppressed decay $B^+\!\to J\mskip -3mu/\mskip -2muψ\,π^+$ are precisely measured relative to the favoured decay $B^+\!\to J\mskip -3mu/\mskip -2muψ\,K^+$, using a sample of proton-proton collision data corresponding to an integrated luminosity of $5.4~\mathrm{fb}^{-1}$ recorded at center-of-mass energy of $13~\mathrm{TeV}$ during 2016--2018. The results of the $C\!P$ asymmetry difference and branching fraction ratio are \begin{align*} Δ\mathcal{A}^{C\!P} &\equiv \mathcal{A}^{C\!P}(B^+ \to J\mskip -3mu/\mskip -2muψ\,π^+) - \mathcal{A}^{C\!P}(B^+ \to J\mskip -3mu/\mskip -2muψ\,K^+) = (1.29 \pm 0.49 \pm 0.08) \times 10^{-2}, \end{align*} \begin{equation*} \mathcal{R}_{π/K} \equiv \frac{\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2muψ\,π^+)}{\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2muψ\,K^+)} = (3.852 \pm 0.022 \pm 0.018) \times 10^{-2}. \end{equation*} where the first uncertainties are statistical and the second systematic. A combination with previous LHCb results based on data collected at $7$ and $8~\mathrm{TeV}$ in 2011 and 2012 yields $Δ\mathcal{A}^{C\!P} = (1.42 \pm 0.43 \pm 0.08) \times 10^{-2}$ and $\mathcal{R}_{π/K} = (3.846 \pm 0.018 \pm 0.018) \times 10^{-2}$. The combined $Δ\mathcal{A}^{C\!P}$ value deviates from zero by 3.2 standard deviations, providing the first evidence for direct $C\!P$ violation in the amplitudes of beauty decays to charmonium final states.
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Les sujets associés
Particle physics theoretical and experimental studiesNeutrino Physics ResearchDark Matter and Cosmic Phenomena