Measurement of the pp→ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at √s = 8 TeV
Articolo
Data di Pubblicazione:
2015
Abstract:
A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton–proton collisions at √s = 8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6 fb−1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ → lll'l', where l = e,μ and l' = e,μ, τ . The measured total cross section σ(pp → ZZ) = 7.7 ± 0.5 (stat)+0.5−0.4 (syst) ± 0.4 (theo) ±0.2 (lumi) pb, for both Z bosons produced in the mass range 60 < m_Z < 120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous
ZZZ and ZZγ couplings at the 95% confidence level: −0.004 < (f_4)^Z < 0.004, −0.004 < (f_5)^Z < 0.004, −0.005 < (f_4)^γ < 0.005, and −0.005 < (f_5)^γ < 0.005.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
CMS; Electroweak; Physics; Nuclear and High Energy Physics
Elenco autori:
Khachatryan, V (Khachatryan, V.)[ 1 ] ; Sirunyan, AM (Sirunyan, A. M.)[ 1 ] ; Tumasyan, A (Tumasyan, A.)[ 1 ] ; Adam, W (Adam, W.)[ 2 ] ; Bergauer, T (Bergauer, T.)[ 2 ] ; Dragicevic, M (Dragicevic, M.)[ 2 ] ; Ero, J (Eroe, J.)[ 2 ] ; Fabjan, C (Fabjan, C.)[ 2,186 ] ; Friedl, M (Friedl, M.)[ 2 ] ; Fruhwirth, R (Fruehwirth, R.)[ 2,186 ] ; Ghete, VM (Ghete, V. M.)[ 2 ] ; Hartl, C (Hartl, C.)[ 2 ] ; Hormann, N (Hoermann, N.)[ 2 ] ; Hrubec, J (Hrubec, J.)[ 2 ] ; Jeitler, M (Jeitler, M.)[ 2,186 ] ; Kiesenhofer, W (Kiesenhofer, W.)[ 2 ] ; Knunz, V (Knuenz, V.)[ 2 ] ; Krammer, M (Krammer, M.)[ 2,186 ] ; Kratschmer, I (Kraetschmer, I.)[ 2 ] ; Liko, D (Liko, D.)[ 2 ] ; Mikulec, I (Mikulec, I.)[ 2 ] ; Rabady, D (Rabady, D.)[ 2,187 ] ; Rahbaran, B (Rahbaran, B.)[ 2 ] ; Rohringer, H (Rohringer, H.)[ 2 ] ; Schofbeck, R (Schoefbeck, R.)[ 2 ] ; Strauss, J (Strauss, J.)[ 2 ] ; Taurok, A (Taurok, A.)[ 2 ] ; Treberer-Treberspurg, W (Treberer-Treberspurg, W.)[ 2 ] ; Waltenberger, W (Waltenberger, W.)[ 2 ] ; Wulz, CE (Wulz, C. -E.)[ 2,186 ] ; Mossolov, V (Mossolov, V.)[ 3 ] ; Shumeiko, N (Shumeiko, N.)[ 3 ] ; Gonzalez, JS (Gonzalez, J. Suarez)[ 3 ] ; Alderweireldt, S (Alderweireldt, S.)[ 4 ] ; Bansal, M (Bansal, M.)[ 4 ] ; Bansal, S (Bansal, S.)[ 4 ] ; Cornelis, T (Cornelis, T.)[ 4 ] ; De Wolf, EA (De Wolf, E. A.)[ 4 ] ; Janssen, X (Janssen, X.)[ 4 ] ; Knutsson, A (Knutsson, A.)[ 4 ] ; Luyckx, S (Luyckx, S.)[ 4 ] ; Ochesanu, S (Ochesanu, S.)[ 4 ] ; Roland, B (Roland, B.)[ 4 ] ; Rougny, R (Rougny, R.)[ 4 ] ; De Klundert, MV (De Klundert, M. Van)[ 4 ] ; Van Haevermaet, H (Van Haevermaet, H.)[ 4 ] ; Van Mechelen, P (Van Mechelen, P.)[ 4 ] ; Van Remortel, N (Van Remortel, N.)[ 4 ] ; Van Spilbeeck, A (Van Spilbeeck, A.)[ 4 ] ; Blekman, F (Blekman, F.)[ 5 ] ; Blyweert, S (Blyweert, S.)[ 5 ] ; D'Hondt, J (D'Hondt, J.)[ 5 ] ; Daci, N (Daci, N.)[ 5 ] ; Heracleous, N (Heracleous, N.)[ 5 ] ; Kalogeropoulos, A (Kalogeropoulos, A.)[ 5 ] ; Keaveney, J (Keaveney, J.)[ 5 ] ; Kim, TJ (Kim, T. J.)[ 5 ] ; Lowette, S (Lowette, S.)[ 5 ] ; Maes, M (Maes, M.)[ 5 ] ; Olbrechts, A (Olbrechts, A.)[ 5 ] ; Python, Q (Python, Q.)[ 5 ] ; Strom, D (Strom, D.)[ 5 ] ; Tavernier, S (Tavernier, S.)[ 5 ] ; Van Doninck, W (Van Doninck, W.)[ 5 ] ; Van Mulders, P (Van Mulders, P.)[ 5 ] ; Van Onsem, GP (Van Onsem, G. P.)[ 5 ] ; Villella, I (Villella, I.)[ 5 ] ; Caillol, C (Caillol, C.)[ 6 ] ; Clerbaux, B (Clerbaux, B.)[ 6 ] ; De Lentdecker, G (De Lentdecker, G.)[ 6 ] ; Dobur, D (Dobur, D.)[ 6 ] ; Favart, L (Favart, L.)[ 6 ] ; Gay, APR (Gay, A. P. R.)[ 6 ] ; Grebenyuk, A (Grebenyuk, A.)[ 6 ] ; Leonard, A (Leonard, A.)[ 6 ] ; Mohammadi, A (Mohammadi, A.)[ 6 ] ; Pernie, L (Pernie, L.)[ 6,187 ] ; Reis, T (Reis, T.)[ 6 ] ; Seva, T (Seva, T.)[ 6 ] ; Thomas, L (Thomas, L.)[ 6 ] ; Velde, CV (Velde, C. Vander)[ 6 ] ; Vanlaer, P (Vanlaer, P.)[ 6 ] ; Wang, J (Wang, J.)[ 6 ] ; Adler, V (Adler, V.)[ 7 ] ; Beernaert, K (Beernaert, K.)[ 7 ] ; Benucci, L (Benucci, L.)[ 7 ] ; Cimmino, A (Cimmino, A.)[ 7 ] ; Costantini, S (Costantini, S.)[ 7 ] ; Crucy, S (Crucy, S.)[ 7 ] ; Dildick, S (Dildick, S.)[ 7 ] ; Fagot, A (Fagot, A.)[ 7 ] ; Garcia, G (Garcia, G.)[ 7 ] ; Klein, B (Klein, B.)[ 7 ] ; Mccartin, J (Mccartin, J.)[ 7 ] ; Rios, AAO (Rios, A. A. Ocampo)[ 7 ] ; Ryckbosch, D (Ryckbosch, D.)[ 7 ] ; Diblen, SS (Diblen, S. Salva)[ 7 ] ; Sigamani, M (Sigamani, M.)[ 7 ] ; Strobbe, N (Strobbe, N.)[ 7 ] ; Thyssen, F (Thyssen, F.)[ 7 ] ; Tytgat, M (Tytgat, M.)[ 7 ] ; Yazgan, E (Yazgan, E.)[ 7 ] ; Zaganidis, N (Zaganidis, N.)[ 7 ] ; Basegmez, S (Basegmez, S.)[ 8 ] ; Beluffi, C (Beluffi, C.)[ 8,188 ] ; Bruno, G (Bruno, G.)[ 8 ] ; Castello, R (Castello, R.)[ 8 ] ; Caudron, A (Caudron, A.)[ 8 ] ; Ceard, L (Ceard, L.)[ 8 ] ; Da Silveira, GG (Da Silveira, G. G.)[ 8 ] ; Delaere, C (Delaere, C.)[ 8 ] ; du Pree, T (du Pree, T.)[ 8 ] ; Favart, D (Favart, D.)[ 8 ] ; Forthomme, L (Forthomme, L.)[ 8 ] ; Giammanco, A (Giammanco, A.)[ 8,189 ] ; Hollar, J (Hollar, J.)[ 8 ] ; Jez, P (Jez, P.)[ 8 ] ; Komm, M (Komm, M.)[ 8 ] ; Lemai
Link alla scheda completa:
Link al Full Text:
Pubblicato in: