Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production
Articolo
Data di Pubblicazione:
2022
Abstract:
Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width-related to its lifetime-is an important parameter. One way to determine this quantity is to measure its off-shell production, where the Higgs boson mass is far away from its nominal value, and relating it to its on-shell production, where the mass is close to the nominal value. Here we report evidence for such off-shell contributions to the production cross-section of two Z bosons with data from the CMS experiment at the CERN Large Hadron Collider. We constrain the total rate of the off-shell Higgs boson contribution beyond the Z boson pair production threshold, relative to its standard model expectation, to the interval [0.0061, 2.0] at the 95% confidence level. The scenario with no off-shell contribution is excluded at a p-value of 0.0003 (3.6 standard deviations). We measure the width of the Higgs boson as Gamma(H) = 3.2(-1.7)(+2.4) MeV, in agreement with the standard model expectation of 4.1 MeV. In addition, we set constraints on anomalous Higgs boson couplings to W and Z boson pairs.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Tumasyan, A; Adam, W; Andrejkovic, Jw; Bergauer, T; Chatterjee, S; Damanakis, K; Dragicevic, M; Del Valle, Ae; Fruhwirth, R; Jeitler, M; Krammer, N; Lechner, L; Liko, D; Mikulec, I; Paulitsch, P; Pitters, Fm; Schieck, J; Schofbeck, R; Schwarz, D; Templ, S; Waltenberger, W; Wulz, Ce; Chekhovsky, V; Litomin, A; Makarenko, V; Darwish, Mr; De Wolf, Ea; Janssen, T; Kello, T; Lelek, A; Sfar, Hr; Van Mechelen, P; Van Putte, S; Van Remortel, N; Bols, Es; D'Hondt, J; De Moor, A; Delcourt, M; El Faham, H; Lowette, S; Moortgat, S; Morton, A; Muller, D; Sahasransu, Ar; Tavernier, S; Van Doninck, W; Vannerom, D; Beghin, D; Bilin, B; Clerbaux, B; De Lentdecker, G; Favart, L; Kalsi, Ak; Lee, K; Mahdavikhorrami, M; Makarenko, I; Paredes, S; Petre, L; Popov, A; Postiau, N; Starling, E; Thomas, L; Vanden Bemden, M; Vander Velde, C; Vanlaer, P; Cornelis, T; Dobur, D; Knolle, J; Lambrecht, L; Mestdach, G; Niedziela, M; Rendon, C; Roskas, C; Samalan, A; Skovpen, K; Tytgat, M; Van den Bossche, N; Vermassen, B; Wezenbeek, L; Benecke, A; Bethani, A; Bruno, G; Bury, F; Caputo, C; David, P; Delaere, C; Donertas, Is; Giammanco, A; Jaffel, K; Jain, S; Lemaitre, V; Mondal, K; Prisciandaro, J; Taliercio, A; Teklishyn, M; Tran, Tt; Vischia, P; Wertz, S; Alves, Ga; Hensel, C; Moraes, A; Teles, Pr; Alda, Wl; Pereira, Mag; Ferreira, Mb; Malbouisson, Hb; Carvalho, W; Chinellato, J; Da Costa, Em; Da Silveira, Gg; Damiao, Dd; Sousa, Vd; De Souza, Sf; Herrera, Cm; Amarilo, Km; Mundim, L; Nogima, H; Santoro, A; Do Amaral, Sms; Sznajder, A; Thiel, M; De Araujo, Ftd; Pereira, Av; Bernardes, Ca; Calligaris, L; Tomei, Trfp; Gregores, Em; Lemos, Ds; Mercadante, Pg; Novaes, Sf; Padula, Ss; Aleksandrov, A; Antchev, G; Hadjiiska, R; Iaydjiev, P; Misheva, M; Rodozov, M; Shopova, M; Sultanov, G; Dimitrov, A; Ivanov, T; Litov, L; Pavlov, B; Petkov, P; Petrov, A; Cheng, T; Javaid, T; Mittal, M; Wang, H; Yuan, L; Ahmad, M; Bauer, G; Dozen, C; Hu, Z; Martins, J; Wang, Y; Yi, K; Chapon, E; Chen, Gm; Chen, Hs; Chen, M; Iemmi, F; Kapoor, A; Leggat, D; Liao, H; Liu, Za; Milosevic, V; Monti, F; Sharma, R; Tao, J; Thomas-Wilsker, J; Wang, J; Zhang, H; Zhao, J; Agapitos, A; An, Y; Ban, Y; Chen, C; Levin, A; Li, Q; Lyu, X; Mao, Y; Qian, Sj; Wang, D; Xiao, J; Yang, H; Lu, M; You, Z; Gao, X; Okawa, H; Zhang, Y; Lin, Z; Xiao, M; Avila, C; Cabrera, A; Florez, C; Fraga, J; Guisao, Jm; Ramirez, F; Alvarez, Jdr; Giljanovic, D; Godinovic, N; Lelas, D; Puljak, I; Antunovic, Z; Kovac, M; Sculac, T; Brigljevic, V; Ferencek, D; Majumder, D; Roguljic, M; Starodumov, A; Susa, T; Attikis, A; Christoforou, K; Kole, G; Kolosova, M; Konstantinou, S; Mousa, J; Nicolaou, C; Ptochos, F; Razis, Pa; Rykaczewski, H; Saka, H; Finger, M; Finger, M; Kveton, A; Ayala, E; Jarrin, Ec; Abdalla, H; Salama, E; Mahmoud, Ma; Mohammed, Y; Bhowmik, S; Dewanjee, Rk; Ehataht, K; Kadastik, M; Nandan, S; Nielsen, C; Pata, J; Raidal, M; Tani, L; Veelken, C; Eerola, P; Kirschenmann, H; Osterberg, K; Voutilainen, M; Bharthuar, S; Brucken, E; Garcia, F; Havukainen, J; Kim, Ms; Kinnunen, R; Lampen, T; Lassila-Perini, K; Lehti, S; Linden, T; Lotti, M; Martikainen, L; Myllymaki, M; Ott, J; Rantanen, Mm; Siikonen, H; Tuominen, E; Tuominiemi, J; Luukka, P; Petrow, H; Tuuva, T; Amendola, C; Besancon, M; Couderc, F; Dejardin, M; Denegri, D; Faure, Jl; Ferri, F; Ganjour, S; Gras, P; De Monchenault, Gh; Jarry, P; Lenzi, B; Malcles, J; Rander, J; Rosowsky, A; Sahin, Mo; Savoy-Navarro, A; Simkina, P; Titov, M; Yu, Gb; Ahuja, S; Beaudette, F; Bonanomi, M; Perraguin, Ab; Busson, P; Cappati, A; Charlot, C; Davignon, O; Diab, B; Falmagne, G; Alves, Bafs; Ghosh, S; De Cassagnac, Rg; Hakimi, A; Kucher, I; Motta, J; Nguyen, M; Ochando, C; Paganini, P; Rembser, J; Salerno, R; Sarkar, U; Sauvan, Jb; Sirois, Y; Tarabini, A; Zabi, A; Zghiche, A; Agram, Jl; Andrea, J; Apparu, D; Bloch, D; Bourgatte, G; Brom, Jm; Chabert, Ec; Collard, C; Darej, D; Fontaine, Jc; Goerlach, U; Grimault, C; Le Bihan, Ac; Nibigira, E; Van Hove, P; Asilar, E; Beauceron, S; Ber
Link alla scheda completa:
Pubblicato in: