Publication Date:
2021
abstract:
Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 173 nb(-1). The differential cross section as a function of the dimuon mass is measured in the range 15-600 GeV, for the first time in proton-nucleus collisions. It is also reported as a function of dimuon rapidity over the mass ranges 15-60 GeV and 60-120 GeV, and ratios for the p-going over the Pb-going beam directions are built. In both mass ranges, the differential cross sections as functions of the dimuon transverse momentum p(T), and of a geometric variable phi* are measured, where phi* highly correlates with p(T), but is determined with higher precision. In the Z mass region, the rapidity dependence of the data indicate a modification of the distribution of partons within a lead nucleus as compared to the proton case. The data are more precise than predictions based upon current models of parton distributions.
Iris type:
1.1 Articolo in rivista
Keywords:
Hadron-Hadron scattering (experiments); Relativistic heavy ion physics
List of contributors:
Sirunyan, Am; Tumasyan, A; Adam, W; Ambrogi, F; Asilar, E; Bergauer, T; Brandstetter, J; Dragicevic, M; Ero, J; Del Valle, Ae; Flechl, M; Fruhwirth, R; Ghete, Vm; Hrubec, J; Jeitler, M; Krammer, N; Kratschmer, I; Liko, D; Madlener, T; Mikulec, I; Rad, N; Rohringer, H; Schieck, J; Schofbeck, R; Spanring, M; Spitzbart, D; Taurok, A; Waltenberger, W; Wittmann, J; Wulz, Ce; Zarucki, M; Chekhovsky, V; Mossolov, V; Gonzalez, Js; De Wolf, Ea; Di Croce, D; Janssen, X; Lauwers, J; Pieters, M; Van De Klundert, M; Janssen, X; Lauwers, J; Pieters, M; Van De Klundert, M; Van Haevermaet, H; Van Mechelen, P; Van Remortel, N; Abu Zeid, S; Blekman, F; D'Hondt, J; De Bruyn, I; De Clercq, J; Deroover, K; Flouris, G; Lontkovskyi, D; Lowette, S; Marchesini, I; Moortgat, S; Moreels, L; Python, Q; Skovpen, K; Tavernier, S; Van Doninck, W; Van Mulders, P; Van Parijs, I; Beghin, D; Bilin, B; Brun, H; Clerbaux, B; De Lentdecker, G; Delannoy, H; Dorney, B; Fasanella, G; Favart, L; Goldouzian, R; Grebenyuk, A; Kalsi, Ak; Lenzi, T; Luetic, J; Postiau, N; Starling, E; Thomas, L; Vander Velde, C; Vanlaer, P; Vannerom, D; Wang, Q; Cornelis, T; Dobur, D; Fagot, A; Gul, M; Khvastunov, I; Poyraz, D; Roskas, C; Trocino, D; Tytgat, M; Verbeke, W; Vermassen, B; Vit, M; Zaganidis, N; Bakhshiansohi, H; Bondu, O; Brochet, S; Bruno, G; Caputo, C; David, P; Delaere, C; Delcourt, M; Francois, B; Giammanco, A; Krintiras, G; Lemaitre, V; Magitteri, A; Mertens, A; Musich, M; Piotrzkowski, K; Saggio, A; Marono, Mv; Wertz, S; Zobec, J; Alves, Fl; Alves, Ga; Martins, Mc; Silva, Gc; Hensel, C; Moraes, A; Pol, Me; Teles, Pr; Das Chagas, Ebb; Carvalho, W; Chinellato, J; Coelho, E; Da Costa, Em; Da Silveira, Gg; Damiao, Dd; Martins, Cd; De Souza, Sf; Malbouisson, H; Figueiredo, Dm; De Almeida, Mm; Herrera, Cm; Mundim, L; Nogima, H; Da Silva, Wlp; Rosas, Ljs; Santoro, A; Sznajder, A; Thiel, M; Manganote, Ejt; De Araujo, Ftd; Pereira, Av; Ahuja, S; Bernardes, Ca; Calligaris, L; Tomei, Trfp; Gregores, Em; Mercadante, Pg; Novaes, Sf; Padula, Ss; Abad, Dr; Aleksandrov, A; Hadjiiska, R; Iaydjiev, P; Marinov, A; Misheva, M; Rodozov, M; Shopova, M; Sultanov, G; Dimitrov, A; Litov, L; Pavlov, B; Petkov, P; Fang, W; Gao, X; Yuan, L; Ahmad, M; Bian, Jg; Chen, Gm; Chen, Hs; Chen, M; Chen, Y; Jiang, Ch; Leggat, D; Liao, H; Liu, Z; Romeo, F; Shaheen, Sm; Spiezia, A; Tao, J; Wang, C; Wang, Z; Yazgan, E; Zhang, H; Zhao, J; Ban, Y; Chen, G; Levin, A; Li, J; Li, L; Li, Q; Mao, Y; Qian, Sj; Wang, D; Xu, Z; Wang, Y; Avila, C; Cabrera, A; Montoya, Cac; Sierra, Lfc; Florez, C; Hernandez, Cfg; Delgado, Mas; Courbon, B; Godinovic, N; Lelas, D; Puljak, I; Sculac, T; Antunovic, Z; Kovac, M; Brigljevic, V; Ferencek, D; Kadija, K; Mesic, B; Starodumov, A; Susa, T; Ather, Mw; Attikis, A; Kolosova, M; Mavromanolakis, G; Mousa, J; Nicolaou, C; Ptochos, F; Razis, Pa; Rykaczewski, H; Finger, M; Finger, M; Ayala, E; Jarrin, Ec; Assran, Y; Elgammal, S; Mohammed, Y; Bhowmik, S; De Oliveira, Aca; Dewanjee, Rk; Ehataht, K; Kadastik, M; Raidal, M; Veelken, C; Eerola, P; Kirschenmann, H; Pekkanen, J; Voutilainen, M; Havukainen, J; Heikkila, Jk; Jarvinen, T; Karimaki, V; Kinnunen, R; Lampen, T; Lassila-Perini, K; Laurila, S; Lehti, S; Linden, T; Luukka, P; Maenpaa, T; Siikonen, H; Tuominen, E; Tuominiemi, J; 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; Leloup, C; Locci, E; Malcles, J; Negro, G; Rander, J; Rosowsky, A; Sahin, Mo; Titov, M; Abdulsalam, A; Amendola, C; Antropov, I; Beaudette, F; Busson, P; Charlot, C; de Cassagnac, Rg; Kucher, I; Lobanov, A; Blanco, Jm; Nguyen, M; Ochando, C; Ortona, G; Paganini, P; Pigard, P; Salerno, R; Sauvan, Jb; Sirois, Y; Leiton, Ags; Zabi, A; Zghiche, A; Agram, Jl; Andrea, J; Bloch, D; Brom, Jm; Chabert, Ec; Cherepanov, V; Collard, C; Conte, E; Fontaine, Jc; Gele, D; Goerlach, U; Jansova, M; Le Bihan, Ac; Tonon, N; Van Hove, P; Gadrat, S; Beauceron, S; Bernet, C; Boudoul, G; Chanon,
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