Determination of the top-quark pole mass and strong coupling constant from the t tbar production cross section in pp collisions at sqrt(s)=7 TeV
Articolo
Data di Pubblicazione:
2014
Abstract:
The inclusive cross section for top-quark pair production measured by the CMS experiment in protonproton collisions at a center-of-mass energy of 7 TeV is compared to the QCD prediction at next-to-next-to-leading order with various parton distribution functions to determine the top-quark pole mass, m(t)(pole), or the strong coupling constant, alpha(S). With the parton distribution function set NNPDF2.3, a pole mass of 176.7(-3.4)(+3.8) GeV is obtained when constraining alpha(S) at the scale of the Z boson mass, m(Z), to the current world average. Alternatively, by constraining m(t)(pole) to the latest average from direct mass measurements, a value of alpha(S)(m(Z)) = 0.1151(-0.0032)(+0.0033) is extracted. This is the first determination of alpha(S) using events from top-quark production.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Chatrchyan, S; Khachatryan, V; Sirunyan, Am; Tumasyan, A; Adam, W; Bergauer, T; Dragicevic, M; Ero, J; Fabjan, C; Friedl, M; Fruhwirth, R; Ghete, Vm; Hartl, C; Hormann, N; Hrubec, J; Jeitler, M; Kiesenhofer, W; Knunz, V; Krammer, M; Kratschmer, I; Liko, D; Mikulec, I; Rabady, D; Rahbaran, B; Rohringer, H; Schofbeck, R; Strauss, J; Taurok, A; Treberer-Treberspurg, W; Waltenberger, W; Wulz, Ce; Mossolov, V; Shumeiko, N; Gonzalez, Js; Alderweireldt, S; Bansal, M; Bansal, S; Beaumont, W; Cornelis, T; De Wolf, Ea; Janssen, X; Knutsson, A; Luyckx, S; Mucibello, L; Ochesanu, S; Roland, B; Rougny, R; Van Haevermaet, H; Van Mechelen, P; Van Remortel, N; Van Spilbeeck, A; Blekman, F; Blyweert, S; D'Hondt, J; Devroede, O; Heracleous, N; Kalogeropoulos, A; Keaveney, J; Kim, Tj; Lowette, S; Maes, M; Olbrechts, A; Python, Q; Strom, D; Tavernier, S; Van Doninck, W; Van Lancker, L; Van Mulders, P; Van Onsem, Gp; Villella, I; Caillol, C; Clerbaux, B; De Lentdecker, G; Favart, L; Gay, Apr; Leonard, A; Marage, Pe; Mohammadi, A; Pernie, L; Reis, T; Seva, T; Thomas, L; Vander Velde, C; Vanlaer, P; Wang, J; Adler, V; Beernaert, K; Benucci, L; Cimmino, A; Costantini, S; Dildick, S; Garcia, G; Klein, B; Lellouch, J; Mccartin, J; Rios, Aao; Ryckbosch, D; Diblen, Ss; Sigamani, M; Strobbe, N; Thyssen, F; Tytgat, M; Walsh, S; Yazgan, E; Zaganidis, N; Basegmez, S; Beluffi, C; Bruno, G; Castello, R; Caudron, A; Ceard, L; Da Silveira, Gg; De Callatay, B; Delaere, C; Du Pree, T; Favart, D; Forthomme, L; Giammanco, A; Hollar, J; Jez, P; Komm, M; Lemaitre, V; Liao, J; Michotte, D; Militaru, O; Nuttens, C; Pagano, D; Pin, A; Piotrzkowski, K; Popov, A; Quertenmont, L; Selvaggi, M; Marono, Mv; Garcia, Jmv; Beliy, N; Caebergs, T; Daubie, E; Hammad, Gh; Alves, Ga; Martins, Mc; Martins, T; Pol, Me; Souza, Mhg; Alda, Wl; Carvalho, W; Chinellato, J; Custodio, A; Da Costa, Em; Damiao, Dd; Martins, Cd; De Souza, Sf; Malbouisson, H; Malek, M; Figueiredo, Dm; Mundim, L; Nogima, H; Da Silva, Wlp; Santaolalla, J; Santoro, A; Sznajder, A; Manganote, Ejt; Pereira, Av; Bernardes, Ca; Dias, Fa; Tomei, Trfp; Gregores, Em; Mercadante, Pg; Novaes, Sf; Padula, Ss; Genchev, V; Iaydjiev, P; Marinov, A; Piperov, S; Rodozov, M; Sultanov, G; Vutova, M; Dimitrov, A; Glushkov, I; Hadjiiska, R; Kozhuharov, V; Litov, L; Pavlov, B; Petkov, P; Bian, Jg; Chen, Gm; Chen, Hs; Chen, M; Du, R; Jiang, Ch; Liang, D; Liang, S; Meng, X; Plestina, R; Tao, J; Wang, X; Wang, Z; Asawatangtrakuldee, C; Ban, Y; Guo, Y; Li, Q; Li, W; Liu, S; Mao, Y; Qian, Sj; Wang, D; Zhang, L; Zou, W; Avila, C; Montoya, Cac; Sierra, Lfc; Florez, C; Gomez, Jp; Moreno, Bg; Sanabria, Jc; Godinovic, N; Lelas, D; Polic, D; Puljak, I; Antunovic, Z; Kovac, M; Brigljevic, V; Kadija, K; Luetic, J; Mekterovic, D; Morovic, S; Tikvica, L; Attikis, A; Mavromanolakis, G; Mousa, J; Nicolaou, C; Ptochos, F; Razis, Pa; Finger, M; Finger, M; Abdelalim, Aa; Assran, Y; Elgammal, S; Kamel, Ae; Mahmoud, Ma; Radi, A; Kadastik, M; Muntel, M; Murumaa, M; Raidal, M; Rebane, L; Tiko, A; Eerola, P; Fedi, G; Voutilainen, M; Harkonen, J; Karimaki, V; Kinnunen, R; Kortelainen, Mj; Lampen, T; Lassila-Perini, K; Lehti, S; Linden, T; Luukka, P; Maenpaa, T; Peltola, T; Tuominen, E; Tuominiemi, J; Tuovinen, E; Wendland, L; Tuuva, T; Besancon, M; Couderc, F; Dejardin, M; Denegri, D; Fabbro, B; Faure, Jl; Ferri, F; Ganjour, S; Givernaud, A; Gras, P; de Monchenault, Gh; Jarry, P; Locci, E; Malcles, J; Nayak, A; Rander, J; Rosowsky, A; Titov, M; Baffioni, S; Beaudette, F; Busson, P; Charlot, C; Daci, N; Dahms, T; Dalchenko, M; Dobrzynski, L; Florent, A; de Cassagnac, Rg; Mine, P; Mironov, C; Naranjo, In; Nguyen, M; Ochando, C; Paganini, P; Sabes, D; Salerno, R; Sauvan, Jb; Sirois, Y; Veelken, C; Yilmaz, Y; Zabi, A; Agram, Jl; Andrea, J; Bloch, D; Bonnin, C; Brom, Jm; Chabert, Ec; Charles, L; Collard, C; Conte, E; Drouhin, F; Fontaine, Jc; Gele, D; Goerlach, U; Goetzmann, C; Gross, L; Juillot, P; Le Bihan, Ac; Van Hove, P; Gadrat, S; Baulieu, G; Beauceron, S; Beau
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