Search for the production of an excited bottom quark decaying to tW in proton-proton collisions at √s=8 TeV
Articolo
Data di Pubblicazione:
2016
Abstract:
A search is presented for a singly produced excited bottom quark (b*) decaying to a top quark and a W boson in the all-hadronic, lepton+jets, and dilepton final states in proton-proton collisions at √s = 8 TeV recorded by the CMS experiment at the CERN LHC. Data corresponding to an integrated luminosity of 19.7 fb−1 are used. No significant excess of events is observed with respect to standard model expectations. We set limits at 95% confidence on the product of the b* quark production cross section and its branching fraction to tW. The cross section limits are interpreted for scenarios including left-handed,
right-handed, and vector-like couplings of the b* quark and are presented in the two-dimensional coupling plane based on the production and decay coupling constants. The
masses of the left-handed, right-handed, and vector-like b* quark states are excluded at
95% confidence below 1390, 1430, and 1530 GeV, respectively, for benchmark couplings.
This analysis gives the most stringent limits on the mass of the b* quark to date.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
LHC, CMS, Beyond Standard Model
Elenco autori:
Khachatryan, V; Sirunyan, Am; Tumasyan, A; Adam, W; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Ero, J; Flechl, M; Friedl, M; Fruhwirth, R; Ghete, Vm; Hartl, C; Hormann, N; Hrubec, J; Jeitler, M; Knunz, V; Konig, A; Krammer, M; Kratschmer, I; Liko, D; Matsushita, T; Mikulec, I; Rabady, D; Rahbaran, B; Rohringer, H; Schieck, J; Schofbeck, R; Strauss, J; Treberer-Treberspurg, W; Waltenberger, W; Wulz, Ce; Mossolov, V; Shumeiko, N; Gonzalez, Js; Alderweireldt, S; Cornelis, T; De Wolf, Ea; Janssen, X; Knutsson, A; Lauwers, J; Luyckx, S; Ochesanu, S; Rougny, R; Van De Klundert, M; Van Haevermaet, H; Van Mechelen, P; Van Remortel, N; Van Spilbeeck, A; Abu Zeid, S; Blekman, F; D'Hondt, J; Daci, N; De Bruyn, I; Deroover, K; Heracleous, N; Keaveney, J; Lowette, S; Moreels, L; Olbrechts, A; Python, Q; Strom, D; Tavernier, S; Van Doninck, W; Mulders, P; Van Onsem, Gp; Van Parijs, I; Barria, P; Caillol, C; Clerbaux, B; De Lentdecker, G; Delannoy, H; Fasanella, G; Favart, L; Gay, Apr; Grebenyuk, A; Karapostoli, G; Lenzi, T; Leonard, A; Maerschalk, T; Marinov, A; Pernie, L; Randle-Conde, A; Reis, T; Seva, T; Vander Velde, C; Vanlaer, P; Yonamine, R; Zenoni, F; Zhang, F; Beernaert, K; Benucci, L; Cimmino, A; Crucy, S; Dobur, D; Fagot, A; Garcia, G; Gul, M; Mccartin, J; Rios, Aao; Poyraz, D; Ryckbosch, D; Salva, S; Sigamani, M; Strobbe, N; Tytgat, M; Van Driessche, W; Yazgan, E; Zaganidis, N; Basegmez, S; Beluffi, C; Bondu, O; Brochet, S; Bruno, G; Castello, R; Caudron, A; Ceard, L; Da Silveira, Gg; Delaere, C; Favart, D; Forthomme, L; Giammanco, A; Hollar, J; Jafari, A; Jez, P; Komm, M; Lemaitre, V; Mertens, A; Nuttens, C; Perrini, L; Pin, A; Piotrzkowski, K; Popov, A; Quertenmont, L; Selvaggi, M; Marono, Mv; Beliy, N; Hammad, Gh; Aida, Wl; Alves, Ga; Brito, L; Martins, Mc; Hamer, M; Hensel, C; Herrera, Cm; Moraes, A; Pol, Me; Teles, Pr; Das Chagas, Ebb; Carvalho, W; Chinellato, J; Custodio, A; Da Costa, Em; Damiao, Dd; Martins, Cd; De Souza, Sf; Guativa, Lmh; Malbouisson, H; Figueiredo, Dm; Mundim, L; Nogima, H; Da Silva, Wlp; Santoro, A; Sznajder, A; Manganote, Ejt; Pereira, Av; Ahuja, S; Bernardes, Ca; Santos, Ad; Dogra, S; Tomei, Trfp; Gregores, Em; Mercadante, Pc; Moon, Cs; Novaes, Sf; Padula, Ss; Abad, Dr; Vargas, Jcr; Aleksandrov, A; Hadjiiska, R; Iaydjiev, P; Rodozov, M; Stoykova, S; Sultanov, G; Vutova, M; Dimitrov, A; Glushkov, I; Litov, L; Pavlov, B; Petkov, P; Ahmad, M; Bian, Jg; Chen, Gm; Chen, Hs; Chen, M; Cheng, T; Du, R; Jiang, Ch; Romeo, F; Shaheen, Sm; Tao, J; Wang, C; Wang, Z; Zhang, H; Zhu, S; Asawatangtrakuldee, C; Ban, Y; Li, Q; Liu, S; Mao, Y; Qian, Sj; Wang, D; Xu, Z; Zou, W; Avila, C; Cabrera, A; Sierra, Lfc; Florez, C; Gomez, Jp; Moreno, Bg; Sanabria, Jc; Godinovic, N; Lelas, D; Puljak, I; Cipriano, Pmr; Antunovic, Z; Kovac, M; Brigljevic, V; Kadija, K; Luetic, J; Micanovic, S; Sudic, L; Attikis, A; Mavromanolakis, G; Mousa, J; Nicolaou, C; Ptochos, F; Razis, Pa; Rykaczewski, H; Bodlak, M; Finger, M; Finger, M; Awad, A; El-Khateeb, E; Mohamed, A; Salama, E; Calpas, B; Kadastik, M; Murumaa, M; Raidal, M; Tiko, A; Veelken, C; Eerola, P; Pekkanen, J; Voutilainen, M; Harkonen, J; Karimaki, V; Kinnunen, R; Lampen, T; Lassila-Perini, K; Lehti, S; Linden, T; Luukka, P; Maenpaa, T; Peltola, T; Tuominen, E; Tuominiemi, J; Tuovinen, E; Wendland, L; Talvitie, J; Tuuva, T; Besancon, M; Couderc, F; Dejardin, M; Denegri, D; Fabbro, B; Faure, Jl; Favaro, C; Ferri, F; Ganjour, S; Givernaud, A; Gras, P; de Monchenault, Gh; Jarry, P; Locci, E; Machet, M; Malcles, J; Rander, J; Rosowsky, A; Titov, M; Zghiche, A; Antropov, I; Baffioni, S; Beaudette, F; Busson, P; Cadamuro, L; Chapon, E; Charlot, C; Dahms, T; Davignon, O; Filipovic, N; Florent, A; de Cassagnac, Rg; Lisniak, S; Mastrolorenzo, L; Mine, P; Naranjo, In; Nguyen, M; Ochando, C; Ortona, G; Paganini, P; Regnard, S; Salerno, R; Sauvan, Jb; Sirois, Y; Strebler, T; Yilmaz, Y; Zabi, A; Agram, Jl; Andrea, J; Aubin, A; Bloch, D; Brom, Jm; Buttignol, M; Chabe
Link alla scheda completa:
Link al Full Text:
Pubblicato in: