Observation of Orbitally Excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> States

The observation of a wide peaking structure in the B_{c}^{+}γ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb^{-1}. The statistical significance over the background-only hypothesis exceeds seven standard deviations. The width of the observed structure is larger than the expectation from a single-peak hypothesis, and is well described by an effective minimal model consisting of two narrow peaks located at 6704.8±5.5±2.8±0.3 MeV/c^{2} and 6752.4±9.5±3.1±0.3 MeV/c^{2}. The uncertainty terms are statistical, systematic, and associated to the knowledge of the B_{c}^{+} mass, respectively. The measured peak locations are in line with theoretical predictions for lowest excited P-wave B_{c}^{+} states, marking the first observation of orbitally excited beauty-charm mesons and providing important insights into the internal dynamics of hadrons containing two heavy quarks.

Authors

Institutions

Publication Details

Journal
Physical Review Letters
Published
2025-10-03
DOI
https://doi.org/10.1103/fc8j-tb8k
Citations
1
Primary Topic
Quantum Chromodynamics and Particle Interactions
Type
article
Field-Weighted Citation Impact
1.87

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Observation of Orbitally Excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> States

L. De Paula, A. Seuthe, I. Corredoira, M. M. Duras et al.
1 citations
Physical Review Letters
Quantum Chromodynamics and Particle Interactions
1.87
article

Observation of Orbitally Excited <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>B</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> States

L. De Paula, A. Seuthe, I. Corredoira, M. M. Duras, D. Martínez Santos, R. Fantechi, A. Lobo Salvia, M. Martinelli, S. Sheng, J. de Boer, H.-P. Dembinski, J. Yu, O. Leroy, S. Jakobsen, J. Heuel, B. Saitta, H. Tilquin, A. Kupść, Marie Bachmayer, W. Barter, F. Ferrari, M. Karacson, A. Padee, A. Bertolin, K. Richardson, G. Punzi, H. V. Cliff, G. Sarpis, S. Borghi, F. Muheim, M. Guarise, P. Ilten, N. Jurik, G. Tonani, Y. Wei, Ö. Özçelik, Vukan Jevtic, K. Yang, A. Beck, D. Marangotto, V. Matiunin, J. E. Blank, E. Jiang, D. Bacher, M. Stefaniak, A. Grecu, T. Li, C. Prouvé, T. Ketel, W. Baldini, E. Jans, J. Hammerich, P. Kravchenko, K. Fischer, H. Schindler, M. Fontana, M. Monk, A. Okhotnikov, B. Passalacqua, A. Ishteev, J. Novoa Fernandez, X. Zhu, M. Pló Casasús, R. Matev, D. Saranin, A. Schopper, P. Garcia Moreno, V. Placinta, S. Ely, G. Mancinelli, F. Blanc, Rita Sadek, G. Lanfranchi, F. Pisani, D. S. Mitzel, L. Li, N. Polukhina, Ilya Segal, M. Charles, R. Williams, F. Ferreira Rodrigues, L. Kolk, Z. Xu, R. Quagliani, S. Cali, S. Easo, H. Sazak, J. Baptista de Souza Leite, A. Konoplyannikov, L. Toscano, A. Mauri, S. Poslavskii, B. Couturier, Dorothea Vom Bruch, B. Dey, X. Vilasís-Cardona, K. Liu, S. J. Jaimes Elles, A.-K. Guseinov, D. Nicotra, P. Collins, A. Berezhnoy, Z. Chen, C. Zhang, W. Byczynski, Louis Henry, P. Baladrón Rodríguez, H. Pereira Da Costa, A. D. Dowling, V. Shevchenko, M. Zdybał, Zakariya Aliouche, R. Manera Escalero, J. J. Back, T. Miralles, Q. Li, D. Ilin, N. Valls Canudas, E. Kulikova, José Javier Saavedra-Arias, Miguel Ruiz Diaz, D. Miao, W. Krupa, F. Borgato, S. Barsuk, M. Schiller, Y. Zhao, L. Soares Lavra, U. Egede, S. Monteil, Q. Niu, J. T. Borsuk, P. Billoir, A. Obłąkowska-Mucha, Riccardo Nunzio Pilato, M. Merk, M. Pappagallo, M. Pizzichemi, A. Gioventù, N. Qin, I. R. Barbosa, L. Martinazzoli, Y. L. Liu, G. Meier, A. Biolchini, E. Rodriguez Fernandez, A. Rogovskiy, Eva Kowalczyk, G. Benane, J. M. Otalora Goicochea, Z. Ghorbanimoghaddam, L. Congedo, Xutao Zheng, C. Betancourt, Ibrahim Chahrour, G. Martellotti, L. Garrido, A. Merli, T. Rong, M. Chefdeville, R. J. Hunter, E. Ben-Haim, W. Krzemień, A. Lampis, E. Golobardes, N. Kleijne, A. Usachov, T. Q. Gao, Tianyu Xing, J. Reich, S. Bachmann, J. W. Kautz, Anne Álvarez, F. Polci, G. Gong, C. Y. Yu, E. Vilella Figueras, M. Becker, B. Sciascia, M. Poli Lener, O. Kot, J. D. Brandenburg, J. M. De Miranda, A. Leflat, I. Gorelov, S. Legotin, G. Manca, W. Morren, B. Fang, Lauren Grace Mackey, E. Rodrigues, R. McNulty, Justin Bartz, O. Boente García, P. Carniti, J. Dalseno, C. Fitzpatrick, N. Harnew, C. Landesa Gomez, F. M. Meng, S. Celani, X. Dai, R. Forty, D. Sundfeld, A. Zhelezov, H. Mu, P. Spradlin, T. Gershon, J. Wu, X. W. Wang, R. Song, G. Haefeli, F. L. Liu, A. Chubykin, P. Durante, M. Féo, Frédéric Hemmer, R. D. Moise, M. Kreps, N. Breer, A. Artamonov, D. L. Rolf, S. Malde, R. Ribatti, S. Cesare, X. Wu, V. Kudryavtsev, G. Corti, V. Yeroshenko, Mikhail Barnyakov, Arsenii Gavrikov, J. Bhom, E. Minucci, M. Richardson-Slipper, G. Khreich, C. Dong, M. Ferrillo, Marion Lehuraux, E. Spadaro Norella, A. Bizzeti, P. Roloff, B. Mitreska, K. Świentek, X. Hu, T. Fiutowski, Gianluca Zunica, Y. Li, C. L. Da Silva, S. Belin, Z. Ren, R. Mountain, K. R. Mattioli, A. Brea Rodríguez, K. Belous, R. I. Rabadán Trejo, S. Perazzini, A. Boyer, T. H. McGrath, G. A. Vasquez, R. Aaij, M. Artuso, D. Brundu, K. Klimaszewski, C. S. Bolognani, T. Fulghesu, V. Balagura, J. M. Durham, P. A. Günther, O. Schneider, E. Spedicato, R. Ataíde Da Silva, Y. Amhis, Federico de Benedetti, A. Palano, O. Bezshyyko, J. He, A. Massafferri, S. López Soliño, S. Scherl, G. Cavallero, M. Whitehead, R. H. O’Neil, Y. Zhang, A. Gilman, D. M. Shangase, E. Graugés, M. Witek, A. Solovev, D. A. Friday, D. Y. Tou, T. Blake, I. Polyakov, C. Li, M. Vieites Diaz, M. D. Galati, L. A. Granado Cardoso, M. Olocco, A. Chernov, Francesco Sborzacchi, F. C. Glaser, M. John, M. Calvi, Nicholas Jindal, E. Zaffaroni, Domenico Riccardi, E. Luppi, Alberto Perro, M. Waterlaat, Bridget Mack, M. Mulder, B. K. Jashal, C. Agapopoulou, A. J. Chadwick, Thomas Christian Senger, I. Juszczak, X. Yuan, S. Liu, J. L. Amey, O. Kitouni, M. Smith, V. V. Gligorov, J. Horswill, K. Vos, D. J. Unverzagt, E. Dall’Occo, M. Stahl, S. A. Wotton, Z. Xu, J. E. Davies, G. M., B. D. C. Westhenry, Lorenzo Piccolo, R. Le Gac, F. Bedeschi, M. Tat, Yu. Guz, Allen Cris John Rubesh Rajan, V. Guliaeva, L. R. Madhan Mohan, T. Tork, B. Leverington, Τ. Oeser, J. F. Hu, S. Stanislaus, L. Meyer Garcia, W. Liu, L. Pica, A Balboni, L. Dufour, I. Mackay, A. Mathad, Álvaro Fernández Casaní, X. Peng, A. Dzyuba, V. Tisserand, Y. Wang, Roman Shorkin, C. R. Jones, Y. Gao, E. Gersabeck, L. Giambastiani, H. Stevens, K. Hennessy, N. T. McHugh, R. Caravaca-Mora, T. Mombächer, M. Atzeni, A. Lai, Manuel Gálvez, C. J. G. Onderwater, R. Oldeman, J. J. Velthuis, Y. R. Hou, L. An, A. Campoverde, M. Slater, M. S. Rangel, S. Arguedas Cuendis, G. Martelli, Kunal Garg, Sergio Andres Estrada, P. Camargo Magalhaes, F. Gonçalves Abrantes, N. Neufeld, D. Zhang, Sam Michael Dekkers, A. Contu, N. Sagidova, M. Fernández Gómez, A. Scarabotto, A. Lopez Huertas, J. A. Ward, M. Calvo Gomez, E. Santovetti, Izaac Sanderswood, A. S. W. Abdelmotteleb, I. Belov, F. Martínez-Vidal, B. Meadows, C. Kar, Rashi Sharma, Juliette Authier, M. Faria, M. Gersabeck, F. Redi, K. Li, A. Venkateswaran, H. Jage, R. Van Laak, F. L. Souza De Almeida, Viktor Mytrochenko, A. Perrevoort, L. Felkowski, H. Pham, M. Korolev, Alexander Korchin, C. Patrignani, V. Cavallini, Paloma Laguarta Gonzalez, M. Winn, M. Hartmann, Xiaofan Pan, D. Wiedner, I. Shchemerov, R. Gao, M. Firlej, A. M. Marshall, R. A. Mohammed, V. Sriskaran, G. Tuci, K. Smith, N. Schulte, Mohamed Elashri, G. Pietrzyk, P. Naik, E. Graverini, Isadora Gonçales Vaz, J. Mazorra de Cos, M. Ramírez García, В.А. Кушнир, R. A. Fini, A. Gallas Torreira, Felicia Carolin Volle, C. Matteuzzi, A. Bitadze, A. Sciuccati, V. Duk, C. Gotti, T. Lesiak, F. Dordei, A. Solomin, C. Trippl, F. De Vellis, Z. Williams, D. Golubkov, N. A. Grieser, V. Chobanova, G. Wormser, Y. Liu, M. De Serio, J. Buytaert, Z. Shen, B. Audurier, A. Minotti, L. Paolucci, S. Capelli, E. Smith, Thomas Long, N. Cooke, A. Dziurda, P. Ciambrone, O. De Aguiar Francisco, A. Petrolini, A. Terentev, R. Amalric, S. Simone, S. Kholodenko, P. Albicocco, A. M. Donohoe, E. van Herwijnen, S. Bernet Andres, L. Z. Zhu, Klaas Padeken, M. Chrząszcz, B. Souza De Paula, Alex Daniel Fernez, C. Henderson, D. Fazzini, A. Egorychev, Zeqing Mu, M. Fiorini, P. M. Hamilton, T. Kirn, B. Batsukh, Alessia Anelli, J. A. Rodriguez Lopez, P. K. Resmi, Y. Shimizu, T. Lin, D. Parmar, D. Pereima, C. J. Pawley, J. Li, R. Santacesaria, A. Cardini, T. J. V. Bowcock, S. Kubis, F. Archilli, M. Needham, D. Pinci, M. Adinolfi, A. Pereiro Castro, M. Vesterinen, E. N. Stein, M. Kucharczyk, L. Santoro, A. Bay, P. Duda, P. d’Argent, J. P. Grabowski, A. Saputi, P. De Simone, L. Sun, L. Martel, T. Boettcher, L. Carcedo Salgado, G. Galati, Esteban Currás Rivera, Y. Gao, J. H. Lopes, X. Tong, J. García Pardiñas, Chucheng Pan, S. Vecchi, N. V. Biesuz, L. Grillo, J. Daniel, Alexander Davidson, M. Borsato, Jike Wang, D. H. Cámpora Pérez, D. Torres Machado, N. Skidmore, Paula Herrero Gascon, P. Koppenburg, J. F. Marchand, R. A. Ruiz Fernandez, S. Klaver, B. Adeva, M. J. Williams, X. Zhou, S. De Capua, L. Shchutska, Vladimir Bocharnikov, S. Neubert, M. R. Kmiec, A. Lupato, M. Sarpis, M. De Cian, I. Bediaga, U. Marconi, Saliha Bashir, F. Lazzari, S. Cadeddu, L. Shekhtman, H. Bao, J. A. Gooding, C. Aidala, M. Kane, S. Gromov, Alex Fomin, F. C. R. Bishop, M. Rebollo De Miguel, S. Mariani, Graham Hallett, I. Kostiuk, J. J. Lane, C. Frei, K. De Bruyn, R. Bolzonella, L. Golinka-Bezshyyko, J. Nicolini, J. Deng, M. Saur, Vasyl Dobishuk, E. Aslanides, C. Vrahas, J. Marks, T. Poeschl, T. Gys, B. Pagare, Qingfeng Liang, C. Gaspar, E. J. Walton, S. Joshi, Q. Zou, E. Muhammad, X. Han, F. Debernardis, V. Zhukov, J. Cottee Meldrum, D. Maisuzenko, C. Zeng, Igor Kyryllin, E. Polycarpo, W. Sutcliffe, Kate Lynch, Lorenzo Malentacca, F. Suljik, Ho Sang Lee, N. Sahoo, R. Bernet, C. D’Ambrosio, A. Golutvin, Lucas Dittmann, M. P. Morgenthaler, M. Mazurek, H. Gao, D. Foulds-Holt, G. Liu, P. Krokovny, M. Birch, A. Semennikov, C. U. Perez, M. McCann, F. Fleuret, A. B. Morris, P. Adlarson, P. Campana, S. Kandybei, V. Franco Lima, Elia Bottalico, Louis Lenard Gerken, S. Blusk, M. van Veghel, S. T’Jampens, Jonas Nathanael Eschle, A. R. Wiederhold, A. Wang, V. Obraztsov, R. D. L. Henderson, M. Barbetti, S. Esen, A. Poluektov, M. A. Giza, R. Zhang, Y. Li, A. T. Burke, S. Chernyshenko, F. Oliva, Daniel Magdalinski, T. Li, N. Nikitin, S. Panebianco, E. Maurice, I. Diachkov, T. Ackernley, J. Moroń, G. Wan, R. Caspary, M. Ferro-Luzzi, J. Herd, X. Yang, C. Hadjivasiliou, Y. Tan, V. Zhovkovska, Elisabeth Maria Niel, T. Pajero, G. Casse, S. Qu, Y. Zhou, G. Nowak, L. M. Greeven, L. N. Falcao, G. Passaleva, C. Santamarina Ríos, M. Wang, J. A. Boelhauve, R. Nandakumar, S. Schael, M. W. Dudek, H. K. Giemza, M. Hushchyn, M. Schmelling, M. Andreotti, K. Rinnert, R. Wang, K. Farmer, F. Keizer, P. Gandini, J. J. Malczewski, К. Ившин, G. Morello, M. Goncerz, K. Habermann, H. Van Hecke, F. Betti, J. S. Butter, A. C. dos Reis, H. Miao, A. Jawahery, Shah Rukh Qasim, F. Abudinén, G. Darze, Peilian Li, T. Skwarnicki, F. Teubert, M. Franco Sevilla, D. C. Craik, S. A. Bouchiba, Nikolai Voropaev, M. Rama, D. Lancierini, D. S. Fitzgerald, V. Pugatch, T. Hadavizadeh, L. Fantini, M. Wilkinson, J. Ruiz Vidal, D. Lucchesi, G. Wang, E. Shmanin, H. Cai, O. Lantwin, V. Coco, E. Lemos Cid, Ester Pino, S. Ding, B. Wang, J. Albrecht, J. S. Ordonez Soto, L. Witola, A. Comerma-Montells, L. Cojocariu, F. Dettori, Z. Xiang, Rebecca Murta, R. Calabrese, S. Akar, L. Anderlini, J. Ellbracht, J. J. Saborido Silva, J. D. Shupperd, N. Serra, L. F. Foreman, A. Paul, A. Li, Victoria Valcarce Cadenas, M. S. Bieker, L. Capriotti, P. Cifra, J. Wendel, D. Kaminaris, M. Patel, J. Wang, A. Bohare, J. I. Cambon Bouzas, C. Cocha Toapaxi, A. D. Docheva, Pasquale Andreola, F. I. Giasemis, L. Grazette, Anni Kauniskangas, Bogdan Kutsenko, M. J. Madurai, F. Muñoz-Rojas, Piet Nogga, H. N. Nur, Daniele Passaro, J. Patoc, Gabriel Ricart, Gabriele Romolini, J. Bex, Francesca Swystun, J. A. Teijeiro Jimenez, Matteo Argenton, Pierre Paul Louis Mayencourt, Francesco Terzuoli, L. H. Uecker, Guillermo Hijano Mendizabal, Jacob Pfaller, Ozgur Durmus, J. Wagner, A. A. Adefisoye, Simone Libralon, M. Verdoglia, Bilal Ahmad Ganie, Oleksandr Kshyvanskyi, Pedro Nogarolli, Andrej Sarnatskiy, Eleanor Whiter, Lea Marie Sophie Dreyfus, Xenofon Chiotopoulos, Juan Jose Juan Castella, Luca Balzani, Piera Battista, Donata Osthues, Noah Albin Behling, P. R. Li, Yuhao Wang, Ming Zeng, Jianyu Zhang, M. Xu, N. Tuning, L. M. Garcia Martin, L. Xu, M. Cattaneo, R. Lefèvre, M. Shapkin, S. Li, M. S. Rudolph, R. Vazquez Gomez, Z. Xu, P. Di Nezza, F. Ratnikov, P. Vázquez Regueiro, D. Johnson, Y. Yang, Z. Zhang, W. Vetens, A. Carbone, A. McNab, J. Peng, Z. Wu, D. Mendoza Granada, Xiaoyue Yin, Yintong Song, Shu Xian, Ph. Charpentier, H. Yeung, Federico Ronchetti, L. Hao, A. Rogachev, M. Giovannetti, B. A. Shi, Y. Wu, Z. Lian, L. Kravchuk, A. Loi, T. Colombo, W. Hu, D. A. Milanes, A. Xu, M. Salomoni, Shulei Zhang, D. Zuliani, Atanu Modak, S. Kotriakhova, J. Mauricio, Angel Morcillo Gomez, C. White, E. Rodríguez Rodríguez, D. J. D. Thompson, Y. X. Song, M. Williams, R. Marchevski, C. Burr, R. Silva Coutinho, D. Melnychuk, A. Correia, D. Galli, M. Lucio Martínez, B. Delaney, S. Filippov, D. Strekalina, E. Franzoso, S. R. Roy, S. Ricciardi, G. Robertson, H. Li, A. Villa, C. Normand, X. Jiang, Q. Shi, Victoria Ramos de Oliveira, Karol Mateusz Sowa, W. Duan, V. S. Kirsebom, Camilla de Angelis, Y. Kang, Y. J. Jiang, Y. J. Su, P. Kopciewicz, C. X. Lin, M. Feng, V. Chulikov, J. Zhuo, M. Ramos Pernas, Y. Yuan, L. Buonincontri, A. Ene, J. Brown, J. Sun, Y. Zheng, H. Schmitz, T. H. Harris, T. Zhou, C. Lucarelli, Chanka Jayaweera, Katya Govorkova, S. Didenko, V. Romanovskiy, Z. Ajaltouni, Chen Chen, W. S. Shi, Evgeniia Nekrasova, L. Xu, E. Ejopu, C. Marín Benito, Roman Litvinov, G. Frau, A. Romero Vidal, Lucas George Girardey, Yuman Cai, O. Okhrimenko, N. Néri, N. K. Watson, F. F. Wilson, C. Bozzi, T. Latham, M. Rotondo, O. Steinkamp, M. S. Soares, M. Veltri, A. G. Morris, S. E. Clark, P. Vincent, C. Wang, Marcelo Bovill, J. G. Speer, N. W. Wang, L. L. Pappalardo, J. A. de Vries, L. Tomassetti, V. Vagnoni, C. Parkes, X. R. Lyu, T. Szumlak, L. Eklund, K. Carvalho Akiba, Z. Yang, J. Van Eldik, R. Cardinale, L. Sestini, S. Chen, Y. Li, M. Andersson, Z. Wang, J. Wang, Shunan Zhang, L. Zhang, Q. Han, D. Ao, T. Shears, P. Gardner, A. Szabelski, E. Spiridenkov, Pol Vidrier Villalba, Simon Ghizzo, L. Guerry, Francesco Zenesini, Aleksandar Bordelius, Michal Krzysztof Kazanecki, A. Kozachuk, O. Deschamps, C. Pappenheimer, A. M. Hennequin, Carlos Abellán Beteta, Thomas Peter Jones, S. Gomez Fernandez, M. Santimaria, G. Panshin, S. Maccolini, Evridki Chatzianagnostou, R. Lindner, A. Casais Vidal, V. Egorychev, R. J. Barlow, A. Sergi, A. Ukleja, S. Eisenhardt, Q. Lu, M. Idzik, H. Wu, C. B. Van Hulse, E. Eckstein, Jou-An Chen, G. Simi, A. Ustyuzhanin, D. Hutchcroft, P. Álvarez Cartelle, S. Collaviti, X. Cid Vidal, Y. Xie, T. Evans, A. Hicheur, B. Jost, K. Müller, R. Currie, M. Clemencic, S. Amato, P. Robbe, L. Del Buono, S. Hansmann-Menzemer, Yuanchang Zhu, G. Ciezarek, D. Décamp, G. Bencivenni, D. Websdale, F. Maciuc, E. Thomas, J. Cogan, F. Fabiano, U. Uwer, M. Palutan, A. Malinin, V. Gibson, T. Nakada, S. Stahl, E. Buchanan, F. Machefert, C. Langenbruch, V. Zhukov, D. Popov, S. Williams, H. Yin, J. H. Rademacker, W. Hulsbergen, M. Gandelman, J. Sun, S. Koliiev, E. D. Lesser, K. Prasanth, G. Schwering, C. Gu, D. Savrina, M. Frank, Daniele Manuzzi, D. Lacarrère, L. Carus, B. Khanji, Zirui Wang, C. Göbel, J. Closier, X. Wang, G. Valenti, Y. Ding, A. Semennikov, R. Cheaib, P. Perret, D. Liu, A. Papanestis, J. Langer, P. Neustroev, A. Pastore, Iaroslava Bezshyiko, F. Stagni, T. Nanut, Y. Shang, F. Reiss, M. Pepe Altarelli, A. Pellegrino, M. D. Sokoloff, Y. Luo, A. Kharisova, W. B. Qian, C. Nunez, A. Brossa Gonzalo, G. Wilkinson, Z. Jiao, M. Williams, V. Denysenko, T. Todorov, R. Schwemmer, S. Dadabaev, E. Gushchin, J. Walsh, I. Bachiller, P. Owen, M. Tobin, K. Wyllie, S. Gambetta, G. Graziani, David J. Houston, S. Ponce, M. Cherif, S. Z. Zheng, Sabin Hashmi, F. Alessio, C. Haen, Thomas Wolf, B. Pietrzyk, Hao Chang, S. E. R. Sacha Emile R., A. S. Boldyrev, Guillermo Ordóñez, B. Schmidt, Ruiwen Hou, A. Upadhyay, Y. Liu, Ned Francis Howarth, Qucheng Qian, Daniel Guillermo Martinez Gomez, David Vico Benet, Esteban Felipe Molina Cardenas, Quentin Führing, Mrityunjoy Singha, Yingao Tang, B. Pietrzyk, Y. Jiang, Alois Caillet, A. Iniukhin, M.J. Peters, R. Henderson, A. Washbrook, S. Schmitt, Edoardo Mariani, Jonas Malte Roensch, J. Brodzicka, C. Mancuso, A. Oyanguren, T. Maltsev, L. Dai, I. Belyaev, W. Wiślicki, K. Choi, K. Petridis, M. J. Morello, J. Fu, D. Sahoo, I. Nasteva, U. De Freitas Carneiro Da Graca, C. Satriano, M. Cruz Torres, E. Cogneras, M. Kenzie, C. Vázquez Sierra, G. Raven, E. De Lucia, C. Lazzeroni, Benjamin Urbach, Riccardo Bonacci, Wojciech Gomułka, Henry James Linton, Federico Manganella, Alexia Martorell Granollers, Niclas Sommerfeld, C. Barbero Pretel, L. Moeser, M. Li, X. Liang, L. Calefice, A. Satta, Y. Z. Zhang, Y. Song, N. Bondar, M. Colonna, C. Li, Beatriz Vivacqua, Christian Andres Coronel, Saba Faghih, Zaratsyan Areg, Borja Sevilla Sanjuan, D. J. D. Thompson, Yuxuan Tang, Max Wiegertjes, James Connaughton, Alex Patrick Doheny, Cristina Lopez Iribarnegaray, Marta Cobo Marcos, Daniele Provenzano, Francesco Paciolla, Yinghao Wang
article en
1 citations

Abstract

The observation of a wide peaking structure in the B_{c}^{+}γ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb^{-1}. The statistical significance over the background-only hypothesis exceeds seven standard deviations. The width of the observed structure is larger than the expectation from a single-peak hypothesis, and is well described by an effective minimal model consisting of two narrow peaks located at 6704.8±5.5±2.8±0.3 MeV/c^{2} and 6752.4±9.5±3.1±0.3 MeV/c^{2}. The uncertainty terms are statistical, systematic, and associated to the knowledge of the B_{c}^{+} mass, respectively. The measured peak locations are in line with theoretical predictions for lowest excited P-wave B_{c}^{+} states, marking the first observation of orbitally excited beauty-charm mesons and providing important insights into the internal dynamics of hadrons containing two heavy quarks.

Physical Review LettersVol. 135(23)
University College Dublin (IE), Eötvös Loránd University (HU), Universidade da Coruña (ES), Universidade Federal do Rio de Janeiro (BR), 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), École Polytechnique (FR), University of Liverpool (GB), Universitat de València (ES), University of Freiburg (DE), Hunan University (CN), University of Groningen (NL), Vilnius University (LT), South China Normal University (CN), Taras Shevchenko National University of Kyiv (UA), Université Clermont Auvergne (FR), Universidade de Santiago de Compostela (ES), TU Dortmund University (DE), Peking University (CN), University of Zurich (CH), 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), Université Paris-Saclay (FR), University of Michigan (US), Kharkiv Institute of Physics and Technology (UA), Australian Regenerative Medicine Institute (AU), 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), National Centre for Nuclear Research (PL), Instituto de Física Corpuscular (ES), 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), Los Alamos National Security (United States) (US), 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), Institute of High Energy Physics (CN), Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Institute for Nuclear Research (UA), 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), 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), Consejo Nacional de Rectores, Laboratoire Médiations (FR), State Key Laboratory of Nuclear Physics and Technology, Imperial College London (GB), École Polytechnique Fédérale de Lausanne (CH), The Ohio State University (US), Universitat Ramon Llull (ES), Monash University (AU), University of Cincinnati (US), Massachusetts Institute of Technology (US), 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), RWTH Aachen University (DE), Ruhr University Bochum (DE), 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, Bundesministerium für Bildung und Forschung, 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
Openalex Percentile: Top 10%
Quantum Chromodynamics and Particle Interactions
1.87
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.