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  1. Outputs

Search for an exotic decay of the Higgs boson into a Z boson and a pseudoscalar particle in proton-proton collisions at s=13TeV

Academic Article
Publication Date:
2024
abstract:
A search for an exotic decay of the Higgs boson to a Z boson and a light pseudoscalar particle (a), decaying to a pair of leptons and a pair of photons, respectively, is presented. The search is based on proton-proton collision data at a center-of-mass energy of s=13TeV, collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 138fb−1. The analysis probes pseudoscalar masses ma between 1 and 30 GeV, leading to two pairs of well-isolated leptons and photons. Upper limits at 95% confidence level are set on the Higgs boson production cross section times its branching fraction to two leptons and two photons. The observed (expected) limits are in the range of 1.1–17.8 (1.7–17.9)fb within the probed ma interval. An excess of data above the expected standard model background with a local (global) significance of 2.6 (1.3) standard deviations is observed for a mass hypothesis of ma=3GeV. Limits on models involving axion-like particles, formulated as an effective field theory, are also reported.
Iris type:
1.1 Articolo in rivista
List of contributors:
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Templ, S.; Waltenberger, W.; Wulz, C. -E.; Darwish, M. R.; Janssen, T.; Van Mechelen, P.; Bols, E. S.; D'Hondt, J.; Dansana, S.; De Moor, A.; Delcourt, M.; El Faham, H.; Lowette, S.; Makarenko, I.; Müller, D.; Sahasransu, A. R.; Tavernier, S.; Tytgat, M.; Van Putte, S.; Vannerom, D.; Clerbaux, B.; De Lentdecker, G.; Favart, L.; Hohov, D.; Jaramillo, J.; Khalilzadeh, A.; Lee, K.; Mahdavikhorrami, M.; Malara, A.; Paredes, S.; Pétré, L.; Postiau, N.; Thomas, L.; Vanden Bemden, M.; Vander Velde, C.; Vanlaer, P.; De Coen, M.; Dobur, D.; Hong, Y.; Knolle, J.; Lambrecht, L.; Mestdach, G.; Rendón, C.; Samalan, A.; Skovpen, K.; Van Den Bossche, N.; Wezenbeek, L.; Benecke, A.; Bruno, G.; Caputo, C.; Delaere, C.; Donertas, I. S.; Giammanco, A.; Jaffel, K.; Jain, Sa.; Lemaitre, V.; Lidrych, J.; Mastrapasqua, P.; Mondal, K.; Tran, T. T.; Wertz, S.; Alves, G. A.; Coelho, E.; Hensel, C.; Menezes De Oliveira, T.; Moraes, A.; Rebello Teles, P.; Soeiro, M.; Aldá Júnior, W. L.; Alves Gallo Pereira, M.; Barroso Ferreira Filho, M.; Brandao Malbouisson, H.; Carvalho, W.; Chinellato, J.; Da Costa, E. M.; Da Silveira, G. G.; De Jesus Damiao, D.; Fonseca De Souza, S.; Martins, J.; Mora Herrera, C.; Mota Amarilo, K.; Mundim, L.; Nogima, H.; Santoro, A.; Silva Do Amaral, S. M.; Sznajder, A.; Thiel, M.; Vilela Pereira, A.; Bernardes, C. A.; Calligaris, L.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Mercadante, P. G.; Novaes, S. F.; Orzari, B.; Padula, Sandra S.; Aleksandrov, A.; Antchev, G.; Hadjiiska, R.; Iaydjiev, P.; Misheva, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Ivanov, T.; Litov, L.; Pavlov, B.; Petkov, P.; Petrov, A.; Shumka, E.; Keshri, S.; Thakur, S.; Cheng, T.; Guo, Q.; Javaid, T.; Mittal, M.; Yuan, L.; Bauer, G.; Hu, Z.; Yi, K.; Chen, G. M.; Chen, H. S.; Chen, M.; Iemmi, F.; Jiang, C. H.; Kapoor, A.; Liao, H.; Liu, Z. -A.; Monti, F.; Sharma, R.; Song, J. N.; Tao, J.; Wang, C.; Wang, J.; Wang, Z.; Zhang, H.; Agapitos, A.; Ban, Y.; Levin, A.; Li, C.; Li, Q.; Lyu, X.; Mao, Y.; Qian, S. J.; Sun, X.; Wang, D.; Yang, H.; Zhou, C.; You, Z.; Lu, N.; Leggat, D.; Okawa, H.; Zhang, Y.; Lin, Z.; Lu, C.; Xiao, M.; Avila, C.; Barbosa Trujillo, D. A.; Cabrera, A.; Florez, C.; Fraga, J.; Reyes Vega, J. A.; Mejia Guisao, J.; Ramirez, F.; Rodriguez, M.; Ruiz Alvarez, J. D.; Giljanovic, D.; Godinovic, N.; Lelas, D.; Sculac, A.; Kovac, M.; Sculac, T.; Bargassa, P.; Brigljevic, V.; Chitroda, B. K.; Ferencek, D.; Mishra, S.; Starodumov, A.; Susa, T.; Attikis, A.; Christoforou, K.; Konstantinou, S.; Mousa, J.; Nicolaou, C.; Ptochos, F.; Razis, P. A.; Rykaczewski, H.; Saka, H.; Stepennov, A.; Finger, M.; Finger, M.; Kveton, A.; Ayala, E.; Carrera Jarrin, E.; Abdalla, H.; Assran, Y.; Abdullah Al-Mashad, M.; Mahmoud, M. A.; Dewanjee, R. K.; Ehataht, K.; Kadastik, M.; Lange, T.; Nandan, S.; Nielsen, C.; Pata, J.; Raidal, M.; Tani, L.; Veelken, C.; Kirschenmann, H.; Osterberg, K.; Voutilainen, M.; Bharthuar, S.; Brücken, E.; Garcia, F.; Havukainen, J.; Kallonen, K. T. S.; Kim, M. S.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Lehti, S.; Lindén, T.; Lotti, M.; Martikainen, L.; Myllymäki, M.; Rantanen, M. m.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Luukka, P.; Petrow, H.; Tuuva, T.; Besancon, M.; Couderc, F.; Dejardin, M.; Denegri, D.; Faure, J. L.; Ferri, F.; Ganjour, S.; Gras, P.; Hamel de Monchenault, G.; Lohezic, V.; Malcles, J.; Rander, J.; Rosowsky, A.; Sahin, M. Ö.; Savoy-Navarro, A.; Simkina, P.; Titov, M.; Baldenegro Barrera, C.; Beaudette, F.; Buchot Perraguin, A.; Busson, P.; Cappati, A.; Charlot, C.; Damas, F.; Davignon, O.; De Wit, A.; Falmagne, G.; Fontana Santos Alves, B. A.; Ghosh, S.; Gilbert, A.; Granier de Cassagnac, R.; Hakim
Authors of the University:
AIMÈ CHIARA
MONTAGNA PAOLO MARIA
PELLICCIONI MARIO
RICCARDI CRISTINA
SALVINI PAOLA
VAI ILARIA
VITULO PAOLO
Handle:
https://iris.unipv.it/handle/11571/1503358
Published in:
PHYSICS LETTERS. SECTION B
Journal
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URL

https://www.sciencedirect.com/science/article/pii/S0370269324001400
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