Study of charm mixing and CP violation with D0 → K±π∓π±π∓ decays

A bstract A study of charm mixing and CP violation in D 0 → K ± π ∓ π ± π ∓ decays is performed using data collected by the LHCb experiment in proton-proton collisions from 2015 to 2018, corresponding to an integrated luminosity of 6 fb − 1 . The ratio of promptly produced D 0 → K + π − π + π − to D 0 → K − π + π − π + decay rates is measured as a function of D 0 decay time, both inclusive over phase space and in bins of phase space. Taking external inputs for the $$ {D}^0-{\overline{D}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>D</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mo>−</mml:mo> <mml:msup> <mml:mover> <mml:mi>D</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> mixing parameters x and y allows constraints to be obtained on the hadronic parameters of the charm decay. When combined with previous measurements from charm-threshold experiments and at LHCb, improved knowledge is obtained for these parameters, which is valuable for studies of the angle γ of the Unitarity Triangle. An alternative analysis is also performed, in which external inputs are taken for the hadronic parameters, and the mixing parameters are determined, including ∆ x and ∆ y , which are nonzero in the presence of CP violation. It is found that $$ x=\left(0.{85}_{-0.24}^{+0.15}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>x</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>85</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.24</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.15</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> , $$ y=\left(0.{21}_{-0.27}^{+0.29}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>y</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>21</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.27</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.29</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> , ∆ x = (−0 . 02 ± 0 . 04) % and $$ \Delta y=\left(0.0{2}_{-0.03}^{+0.04}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Δ</mml:mi> <mml:mi>y</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.0</mml:mn> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.03</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.04</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> . These results are consistent with previous measurements and the hypothesis of CP conservation.

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Journal
Journal of High Energy Physics
Published
2025-12-19
DOI
https://doi.org/10.1007/jhep12(2025)153
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Particle physics theoretical and experimental studies
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article
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article

Study of charm mixing and CP violation with D0 → K±π∓π±π∓ decays

O. Leroy, S. Schulte, H. L., Volodymyr Svintozelskyi et al.
Journal of High Energy Physics
Particle physics theoretical and experimental studies
article

Study of charm mixing and CP violation with D0 → K±π∓π±π∓ decays

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Modak, Stefania Vecchi, Minghai Zeng, Ksenia Solovieva, G M, Imanol Corredoira, K. Swientek, L. Henry, C. Kar, J. Marks, Stéphane T’Jampens, T. Szumlak, A. Kupść, Q. Han, T. Harrison, R. Lane, Alexander Rogovskiy, Lucas Martel, J. Heuel, L. Fantini, F. Maciuc, A. Satta, M. Merk, Simon Ghizzo, Francesco Zenesini, Aleksandar Bordelius, T. Pajero, A. Biolchini, G. Benane, Sneha Malde, Alessandro Bertolin, Evridki Chatzianagnostou, Debaryaan Sahoo, Wojciech Krupa, A. Seuthe, C Frei, L. Kravchuk, Jihyun Bhom, B. Mitreska, M Santimaria, F. Hemmer, N. Howarth, Z. Jia, M. Rama, P. Checchia, Z. Máthé, H. Yin, M. Gandelman, B. Saitta, A. Merli, Kazu Akiba, A. Davis, R. Forty, E. Buchanan, X. Lyu, L. Widhalm, Mindaugas Sarpis, G. Coombs, T. Ketel, B. Quintana, A. Pearce, S. H. Lee, D. Popov, B. Khanji, Z. Mathe, N. Kleijne, I. Belov, H. Tilquin, L Anderlini, R. Murta, Francesca Dordei, S. Neubert, R. Bolzonella, L. Carus, E Jans, Olivier Leroy, Marco Gersabeck, David Bacher, N. Tuning, Edward J. Wood, Rebecca Lane, C. D’Ambrosio, A. Upadhyay, Mark Waterlaat, Quentin Führing, Mrityunjoy Singha, T. Rong, M. Whitehead, I. Gorbunov, P.H. Owen, J Moron, Pasquale Andreola, Michel de Cian, Ivan Belyaev, K. Petridis, C. Satriano, G. Raven, S. Schmitt, C. Lazzeroni, Henry James Linton, Axel Iohner, Leandra Moeser, S. De Capua, M. Colonna, Christian Andres Coronel, Saba Faghih, Zaratsyan Areg, Sara Cesare, Irene Celestino, Alex Patrick Doheny, Samuel James Haken, Andreea-Irina Hedes, Oleg Kravcov, Alberto Bellavista, Tobias Krischan Knospe, George William Scriven, Daniele Provenzano, Francesco Paciolla, Elia Bottalico, Thomas Kirn, Edoardo Mariani, Thomas Oeser, Gabriel Ricart, Chenxi Gu, Gaelle Khreich, Renaud Amalric, ZHOU Weida, P. Ilten, S. Stanislaus, U. Marconi, V. Egorychev, B. Vivacqua, A. Villa, H. Stevens, C. Santamarina Rios, H. Sazak, V. Romanovskiy, Z. Yang, A. Egorychev, U. De Freitas Carneiro Da Graca, R. Silva Coutinho, T. Q. Gao, F. Martinez Vidal, T. Ketel, I. Kyryllin, R. Racz, A. Malinin, E. Santovetti, V. Bocharnikov, S. Dadabaev, I. Diachkov, J. Peng, F. Debernardis, A. Contu, X.-R. Lyu, S. Andres Estrada, D. Pereima, T. Fulghesu, S. Gromov, L. H. Uecker, M. Pereira Martinez, M. De Serio, Z. Xu, J. Mazorra de Cos, D. Passaro, A. Wang, A. Papanestis, G. Tonani, I. B. Bediaga, G. Frau, A. Brossa Gonzalo, Y. Gao, P. Collins, M. Pizzichemi, B. Wang, Y. T. Tang, X. Zhu, H. Pham, R. Lindner, A. Szabelski, K. Rinnert, M. Birch, J. E. Blank, J. Zhang, Z. Zhang, A. M. Marshall, C. Burr, T. T. Todorov, R. Ribatti, R. Gao, J. H. Rademacker, A. Zhelezov, J. A. Authier, S. Collaviti, S. Ricciardi, C. Barbero Pretel, D. H. Campora Perez, L. Felkowski, A. Padee, R. Manera Escalero, O. Ozcelik, J. Connaughton, Y. Hou, C. Wild, B. Mack, R. Ataíde Da Silva, A. Boldyrev, W. Byczynski, R. B. Bonacci, C. Langenbruch, F. Archilli, L. Piccolo, A. Petrolini, M. Stahl, T. Colombo, V. Zhovkovska, P. De Simone, Z. Chen, G. Graziani, J. L. Fu, N. Cooke, T. H. McGrath, C. Abellan Beteta, A. Correia, G. Robertson, G. Schwering, V. Matiunin, Y. Cai, A. Chernov, C. S. Bolognani, T. H. Harris, A. M. Donohoe, S. Hashmi, F. Betti, X. W. Wang, M. Ramírez García, Y. J. Jiang, W. B. Qian, J. A. Teijeiro Jimenez, G. Hijano Mendizabal, F. Fabiano, M. Firlej, J. F. Marchand, V. Obraztsov, A. F. Campoverde Quezada, E. Golobardes, Z. Wu, J. C. Smallwood, J. Baptista de Souza Leite, Q. Li, M. Salomoni, G. Sarpis, R. Mountain, D. Y. Tou, R. Le Gac, A. Okhotnikov, J. Novoa Fernandez, A. Rodriguez Alvarez, F. C. R. Bishop, E. Spadaro Norella, Y. Kang, C. Pappenheimer, M. J. Morello, S. Easo, F. C. Glaser, K. O. Padeken, M. Karacson, L. De Paula, M. Mulder, I. Kostiuk, A. C. dos Reis, F. Fleuret, C. Li, F. Ferrari, S. Legotin, F. Reiss, V. Kudryavtsev, N. Skidmore, F. M. Meng, E. D. Lesser, J. A. Gooding, J. Herd, S. Barsuk, N. A. Grieser, J. Wu, L. A. Foreman, A. L. Lightbody, Y. Wu, H. K. Giemza, P. Carniti, N. K. Watson, A. Mathad, M. K. Wilkinson, M. Vieites Diaz, P. E. L. Clarke, K. Müller, F. Ronchetti, L. Guerry, A. Venkateswaran, M. Pappagallo, J. J. Saavedra-Arias, L. Kravchuk, J. Buytaert, S. L. Zhang, A. G. Morris, J. Bartz, J. A. Boelhauve, B. Schmidt, W. Hu, T. Ackernley, V. Franco Lima, D. Melnychuk, M. P. Morgenthaler, J. F. Hu, A. Oyanguren, A. Semennikov, E. Maurice, T. Lesiak, N. Schmidt, Z. Shen, F. Alessio, L. Soares Lavra, Z. Xiang, X. Pan, C. Vrahas, O. Schneider, M. Whitehead, A. Kharisova, D. vom Bruch, G. Panshin, K. Vos, E. Govorkova, P. Gandini, M. Ferrillo, M. Korolev, J. L. Amey, P. Billoir, J. Sun, J. A. Rodriguez Lopez, C. R. Jones, K. R. Mattioli, J. S. Ordonez Soto, K. Li, R. H. O’Neil, C. Marin Benito, M. Ribalda Galvez, T. Nanut, A. Solovev, C. Agapopoulou, M. Rotondo, A. T. Grecu, F. Lazzari, M. Cruz Torres, C. Wang, J. J. Malczewski, Q. Shi, H. Miao, Y. Zhao, M. Feng, R. I. Rabadan Trejo, A. Berezhnoy, Y. Yang, A. Ustyuzhanin, N. Valls Canudas, X. Zhou, T. J. V. Bowcock, G. M. Liu, J. Brown, F. De Vellis, S. E. R. Sacha Emile R., E. Polycarpo, L. A. Granado Cardoso, J. J. Velthuis, G. Passaleva, Y. Wei, S. Didenko, J. Juan Castella, A. Bizzeti, Y. Xie, F. L. Souza De Almeida, N. V. Biesuz, Q. L. Niu, A. Lobo Salvia, T. Nakada, T. Tork, L. Balzani, S. Simone, I. Nasteva, I. V. Gorelov, R. Song, T. Li, V. V. Gligorov, Z. M. Mu, N. Jurik, C. Lopez Iribarnegaray, J. J. Lane, A. D. Docheva, E. Kowalczyk, M. S. Rangel, X. Wu, A. Dzyuba, E. Lemos Cid, M. M. Duras, D. J. Unverzagt, G. Gong, G. Wormser, R. S. Sharma, A. Cardini, J. S. Yu, C. Cocha Toapaxi, O. D. Durmus, O. Deschamps, L. Sun, J. A. Ward, H. J. Wang, B. Meadows, X. S. Jiang, R. A. Ruiz Fernandez, X. Yin, A. Beck, G. Valenti, A. Loi, A. M. Hennequin, J. Chen, S. Cadeddu, E. Rodriguez Fernandez, A. Pellegrino, M. D. Tat, P. K. Resmi, B. Pietrzyk, G. Lanfranchi, M. Andreotti, S. Ponce, S. Arguedas Cuendis, M. Artuso, T. Senger, K. Smith, Y. S. Song, S. Gambetta, M. Kane, W. Morren, K. Swientek, X. Han, T. Boettcher, V. Ramos De Oliveira, P. Nogga, F. Pisani, N. W. Wang, C. Pan, A. Iniukhin, Q. Lu, N. Sahoo, E. van Herwijnen, S. De Capua, R. J. Hunter, H. Cai, C. Vázquez Sierra, L. Carcedo Salgado, J. S. Butter, E. Gersabeck, D. C. Craik, Y. J. Su, P. Kopciewicz, S. J. Jaimes Elles, S. Belin, V. S. Kirsebom, N. S. Sommerfeld, C. B. Van Hulse, M. Barbetti, P. Laguarta Gonzalez, D. A. Friday, M. Wang, M. Senghi Soares, C. Fitzpatrick, H. Yeung, J. Zhuo, M. Vesterinen, A. R. Thomson-Strong, V. Duk, C. L. Da Silva, P. B. Battista, L. Tomassetti, O. De Aguiar Francisco, A. Morcillo Gomez, A. L. Gilman, M. Hushchyn, R. McNulty, A. Lupato, X. Yang, S. Stahl, F. Teubert, P.-R. Li, J. J. Saborido Silva, H. Jage, E. Vilella Figueras, X. Liang, M. Bachmayer, W. Liu, J. Mauricio, Y. Shang, P. Robbe, D. Osthues, E. Minucci, N. Polukhina, B. Jost, Q. Liang, Y. Z. Zhang, I. Sanderswood, C. Gotti, A. Martorell i Granollers, J. García Pardiñas, M. Charles, H. Chang, P. Garcia Moreno, J. Walsh, E. Thomas, A. Pastore, P. Menendez Valdes Perez, A. Kozachuk, P. Baladron Rodriguez, R. Zhang, M. Barnyakov, P. Vidrier Villalba, M. Mikhasenko, P. Naik, D. Ilin, J. D. Brandenburg, F. Oliva, C. Y. Yu, E. Franzoso, Ia. Bezshyiko, M. Xu, F. L. Liu, M. Saur, N. Neufeld, A. Rogachev, M. Fontana, M. Rebollo De Miguel, J. Deng, D. S. Mitzel, M. Borsato, C. Parkes, B. Ganie, M. Stefaniak, E. Kulikova, V. Chulikov, K. Hennessy, J. Cogan, A.-K. Guseinov, P. Kravchenko, E. J. Walton, K. Farmer, M. Adinolfi, O. Boente Garcia, C. Hadjivasiliou, G. Cavallero, L. Pica, C. Landesa Gomez, Q. Q. Qian, A. Boyer, L. Del Buono, E. Whiter, H. Schindler, F. Borgato, G. Simi, F. Machefert, S. Schmitt, F. De Benedetti, D. Strekalina, P. Vincent, B. Couturier, D. Decamp, J. J. Back, J. G. Speer, D. Marangotto, G. Cordova, J. Li, A. Romero Vidal, M. Smith, M. Chrzaszcz, G. Martellotti, P. Herrero Gascon, C. Zeng, E. Zaffaroni, S. A. Bouchiba, S. Kholodenko, Y. Yuan, A. Minotti, K. Yang, S. Calderon Ramirez, E. Jimenez Moya, E. De Lucia, L. R. Madhan Mohan, D. L. Rolf, T. Zhou, I. Shchemerov, S. Perazzini, E. Ejopu, V. Vagnoni, I. Juszczak, M. Monk, P. Roloff, M. Elashri, A. Mauri, L. Shekhtman, X. Hu, M. Burgos Marcos, E. Luppi, S. Pezzulo, S. Bachmann, P. Mayencourt, M. Kreps, Y. Guz, A. Massafferri, R. Nandakumar, X. Dai, I. Gonçales Vaz, M. Guarise, M. van Veghel, J. Ruiz Vidal, A. Fernandez Casani, P. A. Günther, K. Habermann, R. A. Fini, W. S. Shi, S. Kotriakhova, G. Ciezarek, V. Valcarce Cadenas, X. J. Peng, D. Golubkov, S. Eisenhardt, G. Pietrzyk, P. Campana, A. Dziurda, A. John Rubesh Rajan, M. Richardson-Slipper, M. Fiorini, V. M. Placinta, A. S. W. Abdelmotteleb, M. Clemencic, F. Stagni, H. Gao, S. Bashir, S. Mariani, G. Wilkinson, B. Urbach, F. Ferreira Rodrigues, D. Kaminaris, D. Maisuzenko, F. I. Giasemis, F. Keizer, A. Li, A. Lopez Huertas, B. Kutsenko, F. Ratnikov, V. Denysenko, S. Filippov, M. Ramos Pernas, M. A. Wiegertjes, J. Horswill, A. Ishteev, M. Plo Casasus, A. Gallas Torreira, Y. Shimizu, E. Buchanan, M. Martinelli, E. Gushchin, R. Vazquez Gomez, B. Leverington, T. Evans, M. Li, N. Qin, S. Schael, X. Yuan, M. Faria, H. Li, V. Pugatch, N. Sagidova, L. Shchutska, C. X. Lin, K. Belous, Y. H. Wang, M. Hartmann, V. Coco, H. Lee, A. Oblakowska-Mucha, N. Neri, S. Hansmann-Menzemer, S. Qu, K. L. Fischer, W. Sutcliffe, P. Di Nezza, R. Bernet, F. F. Wilson, Y. L. Liu, J. Brodzicka, M. D. Galati, Y. Amhis, M. D. Sokoloff, E. Nekrasova, D. Savrina, P. Albicocco, L. M. Greeven, D. Torres Machado, V. Shevchenko, M. Feo, C. Haen, B. Dey, J. He, J. Ellbracht, D. Zhang, M. Poli Lener, K. Wyllie, Z. Ajaltouni, R. Williams, S. Chen, F. C. Volle, G. Loachamin Ordonez, Z. Ren, V. Cavallini, W. Duan, A. Moro, K. Liu, D. C. Houston, G. Morello, P. Ciambrone, D. K. Klekots, P. Camargo Magalhaes, T. Gys, J. Cottee Meldrum, K. Klimaszewski, D. Zuliani, I. R. Barbosa, H.-P. Dembinski, A. Ene, S. Amato, P. Adlarson, V. Chobanova, L. Dai, P. Perret, E. Dall’Occo, M. R. J. Williams, A. Hicheur, G. Bencivenni, D. Lacarrere, M. J. Peters, T. X. Xing, L. Witola, J. W. Kautz, R. Aaij, V. Jevtic, C. Zhang, D. Manuzzi, P. R. Li, L. Malentacca, A. J. Chadwick, C. Normand, M. Palutan, O. Okhrimenko, S. A. Wotton, H. V. Cliff, M. Shapkin, S. Borghi, D. Mendoza Granada, T. Gershon, G. Meier, M. H. Schune, M. Lehuraux, M. Pepe Altarelli, S. Bernet Andres, L. Toscano, A. Terentev, M. Fernandez Gomez, L. Arnone, Y. Luo, A. Lampis, M. Ferro-Luzzi, K. G. Garg, C. J. G. Onderwater, J. A. Zamora Saa, J. D. Shupperd, F. J. P. Soler, G. Punzi, G. Wang, Q. Zou, V. Zhukov, R. Quagliani, A. Brea Rodriguez, Z. Williams, A. Carbone, M. S. Bieker, A. Pereiro Castro, F. Goncalves Abrantes, K. Prasanth, H. Bao, M. Franco Sevilla, M. A. Giza, F. Suljik, S. Z. Zheng, D. M. Shangase, F. C. L. Lopes, K. M. Sowa, T. Lin, J. Langer, S. Monteil, J. Wendel, J. M. De Miranda, M. Chefdeville, N. Nikitin, G. Tuci, L. Girardey, L. Kolk, I. Mackay, P. Neustroev, F. Muheim, K. Ivshin, J. P. Pfaller, J. H. Lopes, I. Polyakov, C. Henderson, R. Hou, L. N. Falcao, O. Kot, G. Casse, Z. Wang, M. Witek, I. Bachiller Perea, N. A. Behling, S. Neubert, J. A. de Vries, M. Giovannetti, W. Barter, L. Meyer Garcia, M. Frank, D. Fazzini, P. Spradlin, C. A. Aidala, J. Hammerich, B. Batsukh, B. Sevilla Sanjuan, T. Long, E. Curras Rivera, M. K. Kazanecki, M. Zdybal, X. Tong, J. R. Pybus, E. Ben-Haim, M. Becker, L. Cojocariu, A. Artamonov, N. Schulte, H. Wu, O. Bezshyyko, R. Fantechi, D. S. Fitzgerald, P. Durante, B. D. C. Westhenry, E. N. Stein, B. Passalacqua, J. M. Otalora Goicochea, V. Guliaeva, Z. Lian, W. Wislicki, R. D. L. Henderson, G. Wan, S. Jakobsen, S. Liu, D. J. D. Thompson, M. Tobin, S. Gomez Fernandez, C. Betancourt, S. Poslavskii, C. Lucarelli, E. Aslanides, M. McCann, M. Atzeni, L. Eklund, W. Hulsbergen, N. T. McHugh, S. Kandybei, L. L. Pappalardo, L. Santoro, J. Wang, X. Chiotopoulos, B. Souza De Paula, L. Z. Zhu, M. W. Slater, H. Pereira Da Costa, J. Nicolini, N. Voropaev, E. Rodrigues, M. Goncerz, R. Calabrese, E. Cogneras, B. A. Shi, R. N. Pilato, A. Konoplyannikov, S. Koliiev, A. R. Wiederhold, R. Caspary, M. Mazurek, J. P. Grabowski, S. Williams, T. Miralles, L. Li, W. Gomulka, F. Muñoz-Rojas, P. Krokovny, N. Bondar, J. Eschle, Z. Ghorbanimoghaddam, N. Breer, D. Websdale, F. Polci, E. Muhammad, L. M. Mackey, R. Currie, I. Segal, S. Sellam, R. D. Moise, A. Fomin, S. R. Roy, X. Z. Zheng, X. Vilasis-Cardona, B. Audurier, F. Abudinén, R. Wang, E. Olivart Pino, S. López Soliño, Z. Liang, A. Bay, D. Johnson, M. Needham, O. Kshyvanskyi, A. T. Burke, J. I. Cambon Bouzas, D. Lucchesi, M. J. Madurai, J. Closier, M. Cherif, A. A. Adefisoye, S. Esen, E. F. Molina Cardenas, R. J. Barlow, L. M. Garcia Martin, X. Cid Vidal, A. D. Dowling, C. White, M. Andersson, H. N. Nur, O. Steinkamp, C. J. Pawley, D. A. Milanes, J. Velilla Serna, Y. Li, S. Kubis, Y. Ding, P. Alvarez Cartelle, R. Litvinov, D. Galli, A. Leflat, D. Vico Benet, C. Göbel, E. Jiang, M. Patel, E. Rodriguez Rodriguez, S. Xian, O. Lantwin, S. Panebianco, S. Chernyshenko, T. Skwarnicki, A. Jawahery, T. Shears, G. Martelli, A. Golutvin, S. Joshi, L. Grillo, D. Saranin, J. E. Davies, J. M. Durham, N. Jindal, L. Zhang, C. Nunez, F. M. Manganella, J. Kvapil, B. Fang, M. John, A. D. Fernez, S. Celani, M. S. Rudolph, Y. Zhou, Y. Zhu, A. Solomin, J. T. Borsuk, H. Van Hecke, S. Sheng, L. L. Gerken, D. Pinci, V. Sriskaran, D. Martinez Santos, T. Blake, D. Miao, A. Palano, W. Krzemien, E. M. Niel, C. Gaspar, B. Khanji, M. R. Kmiec, B. K. Jashal, E. Eckstein, P. Koppenburg, E. Graugés, A. Chubykin, A. Usachov, P. Vazquez Regueiro, M. Kucharczyk, P. Gardner, C. Bozzi, P. M. Hamilton, D. Martinez Gomez, L. Dufour, L. An, A. Sergi, T. Maltsev, V. Gibson, T. Wolf, Y. H. Zheng
article en

Abstract

A bstract A study of charm mixing and CP violation in D 0 → K ± π ∓ π ± π ∓ decays is performed using data collected by the LHCb experiment in proton-proton collisions from 2015 to 2018, corresponding to an integrated luminosity of 6 fb − 1 . The ratio of promptly produced D 0 → K + π − π + π − to D 0 → K − π + π − π + decay rates is measured as a function of D 0 decay time, both inclusive over phase space and in bins of phase space. Taking external inputs for the $$ {D}^0-{\overline{D}}^0 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>D</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mo>−</mml:mo> <mml:msup> <mml:mover> <mml:mi>D</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mn>0</mml:mn> </mml:msup> </mml:math> mixing parameters x and y allows constraints to be obtained on the hadronic parameters of the charm decay. When combined with previous measurements from charm-threshold experiments and at LHCb, improved knowledge is obtained for these parameters, which is valuable for studies of the angle γ of the Unitarity Triangle. An alternative analysis is also performed, in which external inputs are taken for the hadronic parameters, and the mixing parameters are determined, including ∆ x and ∆ y , which are nonzero in the presence of CP violation. It is found that $$ x=\left(0.{85}_{-0.24}^{+0.15}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>x</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>85</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.24</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.15</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> , $$ y=\left(0.{21}_{-0.27}^{+0.29}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>y</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> <mml:msubsup> <mml:mn>21</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.27</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.29</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> , ∆ x = (−0 . 02 ± 0 . 04) % and $$ \Delta y=\left(0.0{2}_{-0.03}^{+0.04}\right)\% $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Δ</mml:mi> <mml:mi>y</mml:mi> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>0.0</mml:mn> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.03</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.04</mml:mn> </mml:mrow> </mml:msubsup> </mml:mrow> </mml:mfenced> <mml:mo>%</mml:mo> </mml:math> . These results are consistent with previous measurements and the hypothesis of CP conservation.

Journal of High Energy PhysicsVol. 2025(12)
University College Dublin (IE), University of Siena (IT), Eötvös Loránd University (HU), University of Pisa (IT), Universidade da Coruña (ES), University of Bergamo (IT), University of Rome Tor Vergata (IT), Universidade Federal do Rio de Janeiro (BR), University of Modena and Reggio Emilia (IT), Uppsala University (SE), Jagiellonian University (PL), Rutherford Appleton Laboratory (GB), Centre National de la Recherche Scientifique (FR), Los Alamos National Laboratory (US), University of Bonn (DE), University of Padua (IT), Universidad Andrés Bello (CL), École Polytechnique (FR), University of Liverpool (GB), Scuola Normale Superiore (IT), Federal Center for Technological Education Celso Suckow da Fonseca (BR), Universitat de València (ES), University of Freiburg (DE), Hunan University (CN), National Autonomous University of Honduras (HN), University of Groningen (NL), University of Cagliari (IT), Vilnius University (LT), Universidade Estadual de Campinas (UNICAMP) (BR), South China Normal University (CN), University of Milan (IT), Taras Shevchenko National University of Kyiv (UA), Universidad de Alcalá (ES), University of Urbino (IT), Université Clermont Auvergne (FR), Universidade de Santiago de Compostela (ES), TU Dortmund University (DE), University of Ferrara (IT), Peking University (CN), University of Zurich (CH), University of Basilicata (IT), University of Victoria (CA), Aix-Marseille Université (FR), Heidelberg University (DE), University of Cambridge (GB), Cracow University of Technology (PL), Pontifícia Universidade Católica do Rio de Janeiro (BR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), University of Perugia (IT), Université Paris-Saclay (FR), University of Michigan (US), Kharkiv Institute of Physics and Technology (UA), Australian Regenerative Medicine Institute (AU), CEA Paris-Saclay - Etablissement de Saclay (FR), Machine Intelligence Research Institute (US), University of Manchester (GB), Maastricht University (NL), University of Bristol (GB), Universidad Nacional de Colombia (CO), Wuhan University (CN), University of Warwick (GB), Sorbonne Université (FR), University of Oxford (GB), Central China Normal University (CN), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), National Institute for Subatomic Physics (NL), Instituto de Física Corpuscular (ES), Laboratoire de Physique de Clermont Auvergne (FR), Laboratoire de Physique Nucléaire et de Hautes Énergies (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata (IT), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Centro Brasileiro de Pesquisas Físicas (BR), Istituto Nazionale di Fisica Nucleare, Sezione di Genova (IT), CEA Paris-Saclay (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT), Institut National de Physique Nucléaire et de Physique des Particules (FR), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Universidad de Ingeniería y Tecnología (PE), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Laboratoire Leprince-Ringuet (FR), Max Planck Institute for Nuclear Physics (DE), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), LIP6 (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Lamarr Institute for Machine Learning and Artificial Intelligence, Consejo Nacional de Rectores, Imperial College London (GB), École Polytechnique Fédérale de Lausanne (CH), The Ohio State University (US), University of Bari Aldo Moro (IT), Universitat Ramon Llull (ES), Monash University (AU), University of Cincinnati (US), Massachusetts Institute of Technology (US), University of Milano-Bicocca (IT), University of Maryland, College Park (US), European Organization for Nuclear Research (CH), AGH University of Krakow (PL), Université Savoie Mont Blanc (FR), Syracuse University (US), Universitat de Barcelona (ES), Henan Normal University (CN), Lanzhou University (CN), University of Glasgow (GB), University of Birmingham (GB), University of Genoa (IT), RWTH Aachen University (DE), Ruhr University Bochum (DE), University of Bologna (IT), University College of Applied Science (PS), University of Edinburgh (GB), Tsinghua University (CN)
National Science Foundation, U.S. Department of Energy, CERN, UK Research and Innovation, Ministerul Cercetării, Inovării şi Digitalizării, Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei', Leverhulme Trust, European Commission, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Generalitat Valenciana, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Max-Planck-Gesellschaft, Ministerstwo Edukacji i Nauki, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, National Academy of Sciences of Ukraine, Centre National de la Recherche Scientifique, Financiadora de Estudos e Projetos, Région Auvergne-Rhône-Alpes, CAS Center for Excellence in Particle Physics, Australian Research Data Commons, Science and Technology Facilities Council, Deutsches Elektronen-Synchrotron, Agencia Estatal de Investigación, Institute of High Energy Physics, Fundamental Research Funds for the Central Universities, Institut National de Physique Nucléaire et de Physique des Particules, Nuclear Physics, H2020 Marie Skłodowska-Curie Actions
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Particle physics theoretical and experimental studies
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