Data di Pubblicazione:
2021
Abstract:
Events where the two leading jets are separated by a pseudorapidity interval devoid of particle activity, known as jet-gap-jet events, are studied in proton-proton collisions at root s = 13 TeV. The signature is expected from hard color-singlet exchange. Each of the highest transverse momentum (p(T)) jets must have p(T)(jet) > 40 GeV and pseudorapidity 1.4 < vertical bar eta(jet)vertical bar < 4.7, with eta(jet1)eta(jet2) < 0, where jet1 and jet2 are the leading and subleading jets in p(T), respectively. The analysis is based on data collected by the CMS and TOTEM experiments during a low luminosity, high-beta* run at the CERN LHC in 2015, with an integrated luminosity of 0.66 pb(-1). Events with a low number of charged particles with p(T) > 0.2 GeV in the interval vertical bar eta vertical bar < 1 between the jets are observed in excess of calculations that assume only color-exchange. The fraction of events produced via color-singlet exchange, f(CSE), is measured as a function of p(T)(jet2), the pseudorapidity difference between the two leading jets, and the azimuthal angular separation between the two leading jets. The fraction f(CSE) has values of 0.4-1.0%. The results are compared with previous measurements and with predictions from perturbative quantum chromodynamics. In addition, the first study of jet-gap-jet events detected in association with an intact proton using a subsample of events with an integrated luminosity of 0.40 pb(-1) is presented. The intact protons are detected with the Roman pot detectors of the TOTEM experiment. The f(CSE) in this sample is 2.91 +/- 0.70(stat)(-1.01)(+1.08)(syst) times larger than that for inclusive dijet production in dijets with similar kinematics.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Sirunyan, Am; Tumasyan, A; Adam, W; Ambrogi, F; Bergauer, T; Dragicevic, M; Ero, J; Del Valle, Ae; Fruhwirth, R; Jeitler, M; Krammer, N; Lechner, L; Liko, D; Madlener, T; Mikulec, I; Pitters, Fm; Rad, N; Schieck, J; Schofbeck, R; Spanring, M; Templ, S; Waltenberger, W; Wulz, Ce; Zarucki, M; Chekhovsky, V; Litomin, A; Makarenko, V; Gonzalez, Js; Darwish, Mr; De Wolf, Ea; Di Croce, D; Janssen, X; Kello, T; Lelek, A; Pieters, M; Sfar, Hr; Van Haevermaet, H; Van Mechelen, P; Van Putte, S; Van Remortel, N; Blekman, F; Bols, Es; Chhibra, Ss; D'Hondt, J; De Clercq, J; Lontkovskyi, D; Lowette, S; Marchesini, I; Moortgat, S; Morton, A; Python, Q; Tavernier, S; Van Doninck, W; Van Mulders, P; Beghin, D; Bilin, B; Clerbaux, B; De Lentdecker, G; Delannoy, H; Dorney, B; Favart, L; Grebenyuk, A; Kalsi, Ak; Makarenko, I; Moureaux, L; Petre, L; Popov, A; Postiau, N; Starling, E; Thomas, L; Vander Velde, C; Vanlaer, P; Vannerom, D; Wezenbeek, L; Cornelis, T; Dobur, D; Gruchala, M; Khvastunov, I; Niedziela, M; Roskas, C; Skovpen, K; Tytgat, M; Verbeke, W; Vermassen, B; Vit, M; Bruno, G; Bury, F; Caputo, C; David, P; Delaere, C; Delcourt, M; Donertas, Is; Giammanco, A; Lemaitre, V; Mondal, K; Prisciandaro, J; Taliercio, A; Teklishyn, M; Vischia, P; Wuyckens, S; Zobec, J; Alves, Ga; Silva, Gc; Hensel, C; Moraes, A; Junior, Wla; Das Chagas, Ebb; Malbouisson, Hb; Carvalho, W; Chinellato, J; Coelho, E; Da Costa, Em; Da Silveira, Gg; Damiao, Dd; De Souza, Sf; Martins, J; Figueiredo, Dm; Jaime, Mm; De Almeida, Mm; Herrera, Cm; Mundim, L; Nogima, H; Teles, Pr; Rosas, Ljs; Santoro, A; Do Amaral, Sms; Sznajder, A; Thiel, M; Manganote, Ejt; De Araujo, Ftd; Pereira, Av; Bernardes, Ca; Calligaris, L; Tomei, Trfp; Gregores, Em; Lemos, Ds; Mercadante, Pg; Novaes, Sf; Padula, Ss; Aleksandrov, A; Hadjiiska, R; Iaydjiev, P; Misheva, M; Rodozov, M; Shopova, M; Sultanov, G; Bonchev, M; Dimitrov, A; Ivanov, T; Litov, L; Pavlov, B; Petkov, P; Petrov, A; Fang, W; Guo, Q; Wang, H; Yuan, L; Ahmad, M; Hu, Z; Wang, Y; Chapon, E; Chen, Gm; Chen, Hs; Chen, M; Leggat, D; Liao, H; Liu, Z; Sharma, R; Spiezia, A; Tao, J; Thomas-wilsker, J; Wang, J; Zhang, H; Zhang, S; Zhao, J; Agapitos, A; Ban, Y; Chen, C; Levin, A; Li, J; Li, Q; Lu, M; Lyu, X; Mao, Y; Qian, Sj; Wang, D; Wang, Q; Xiao, J; You, Z; Gao, X; Xiao, M; Avila, C; Cabrera, A; Florez, C; Fraga, J; Sarkar, A; Delgado, Mas; Jaramillo, J; Guisao, Jm; Ramirez, F; Alvarez, Jdr; Gonzalez, Cas; Arbelaez, Nv; Giljanovic, D; Godinovic, N; Lelas, D; Puljak, I; Sculac, T; Antunovic, Z; Kovac, M; Brigljevic, V; Ferencek, D; Majumder, D; Mesic, B; Roguljic, M; Starodumov, A; Susa, T; Ather, Mw; Attikis, A; Erodotou, E; Ioannou, A; Kole, G; Kolosova, M; Konstantinou, S; Mavromanolakis, G; Mousa, J; Nicolaou, C; Ptochos, F; Razis, Pa; Rykaczewski, H; Saka, H; Tsiakkouri, D; Finger, M; Finger, M; Kveton, A; Tomsa, J; Ayala, E; Jarrin, Ec; Abdelalim, Aa; Abu Zeid, S; Khalil, S; Mahmoud, Ma; Mohammed, Y; Bhowmik, S; De Oliveira, Aca; Dewanjee, Rk; Ehataht, K; Kadastik, M; Raidal, M; Veelken, C; Eerola, P; Kirschenmann, H; Voutilainen, M; Brucken, E; Havukainen, J; Karimaki, V; Kim, Ms; Kinnunen, R; Lampen, T; Lassila-Perini, K; Laurila, S; Lehti, S; Linden, T; Siikonen, H; Tuominen, E; Tuominiemi, J; Luukka, P; Tuuva, T; Besancon, M; Couderc, F; Dejardin, M; Denegri, D; Faure, Jl; Ferri, F; Ganjour, S; Givernaud, A; Gras, P; de Monchenault, Gh; Jarry, P; Lenzi, B; Locci, E; Malcles, J; Rander, J; Rosowsky, A; Sahin, Mo; Savoy-Navarro, A; Titov, M; Yu, Gb; Ahuja, S; Amendola, C; Beaudette, F; Bonanomi, M; Busson, P; Charlot, C; Davignon, O; Diab, B; Falmagne, G; de Cassagnac, Rg; Hakimi, A; Kucher, I; Lobanov, A; Perez, Cm; Nguyen, M; Ochando, C; Paganini, P; Rembser, J; Salerno, R; Sauvan, Jb; Sirois, Y; Zabi, A; Zghiche, A; Agram, Jl; Andrea, J; Bloch, D; Bourgatte, G; Brom, Jm; Chabert, Ec; Collard, C; Fontaine, Jc; Gele, D; Goerlach, U; Grimault, C; Le Bihan, Ac; Van Hove, P; Asilar, E; Beauceron, S; Bernet, C; Boudoul, G; Camen, C;
Link alla scheda completa:
Pubblicato in: