Title: | Search for same-sign top-quark pair production at √s=7 TeV and limits on flavour changing neutral currents in the top sector |
Authors: | Chatrchyan, S Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Fruhwirth, R Feld, L Bachtis, M Meneguzzo, AT Dias, FA Argiro, S Linden, T Saini, LK Yilmaz, Y Kozlov, G Duda, M Girgis, S Merkel, P Bhat, PC Bialas, W Norbeck, E Pedrini, D Nguyen, D Potenza, R Naimuddin, M Luukka, P Maenpaa, T Tuominen, E Chasco, M Margoni, M Kirschenmann, H Rahbaran, B Panwalkar, S Harris, P Apresyan, A Eartly, DP Olson, J Tricomi, A Tuominiemi, J Petrakou, E Tuovinen, E Flugge, G Golovtsov, V Ungaro, D Arneodo, M Reucroft, S Wendland, L Amsler, C Chang, S Shiu, JG Beuselinck, R Volobouev, I Liu, C Menendez, JF Messineo, A Patel, R Banzuzi, K Yoon, AS Karjalainen, A Bloch, P Hackstein, C Honc, S Korpela, A Geenen, H Lopez, OG Tuuva, T Mannelli, M Sparrow, A Sillou, D Onel, Y Rossini, M Dimitrov, A Brona, G Rose, K Romeo, F Tzeng, YM Besancon, M Rohringer, H Pfeiffer, A Ranjan, K Orsini, L Kozhuharov, V Choudhury, S Tao, J Dejardin, M Lacaprara, S Zang, J Greder, S Ozpineci, A Denegri, D Klanner, R Zanetti, M Schnetzer, S Fabbro, B Genchev, V Wang, M Kim, JY Lellouch, J Segala, M Faure, JL Barrett, M Oliveros, AFO Gill, K Bocci, A Ferri, F Buchmuller, O Jessop, C Shivpuri, RK Ganjour, S Giffels, M Garrido, RGR Vorobyev, A Chang, P De Jeneret, JD Wagner, P Gentit, FX Miceli, T Rosin, M Biino, C Wayne, M Spagnolo, P Givernaud, A Gras, P Schofbeck, R Boudoul, G Wang, D Guo, S Stiliaris, E Ball, AH Kapusi, A de Monchenault, GH Elvira, VD Felcini, M Cortabitarte, RV Jarry, P Faccioli, P Ahmad, WH Banerjee, S Li, W Prescott, C Aziz, T Lange, J Adiguzel, A Bornheim, A Marage, PE Plager, C Locci, E Malcles, J Bolognesi, S Marionneau, M Colling, D Ragazzi, S Mishra, K Giurgiu, G Meyer, A Sinthuprasith, T Bunn, J Botta, C Kubik, A Millischer, L Rander, J Wimpenny, S Linares, EC Guo, Y Benucci, L Perera, L Kim, B Esen, S Erbacher, R Khalil, S Rosowsky, A Bhattacharya, S Wang, X Pieta, H Shreyber, I Somalwar, S Titov, M Hos, I Cooper, SI Strauss, J Lanev, A Speer, T Saka, H Anderson, M Verrecchia, P Liu, H Baffioni, S Tuve, C Bencze, G Vanelderen, L Kim, DH Beaudette, F Thyssen, F Rudolph, M Kurca, T Gribushin, A Liang, D Fisk, I Moisenz, P Kelly, T Bell, AJ Papacz, P Malgeri, L Bona, M Benhabib, L Safonov, A Bianchini, L Tsang, KV Perez, JAC Paramatti, R Bluj, M Heydhausen, D Nourbakhsh, S Jain, S Broutin, C Palichik, V Khan, A Teischinger, F Winstrom, L Cushman, P Busson, P Charlot, C Chen, Y Dahms, T Cartiglia, N Ivanov, Y Ban, Y Sever, R Cripps, N Freeman, J Geralis, T Taurok, A Della Ricca, G Bhattacharya, S Ozok, F Perelygin, V Vavilov, S Kokkas, P Mura, B Krajczar, K Hunt, A Elliott-Peisert, A Dobrzynski, L Elgammal, S Breuker, H de Cassagnac, RG Barbagli, G Haguenauer, M Mine, P Gataullin, M Timciuc, V Naumann-Emme, S Sen, S Bakirci, MN Wigmans, R Stone, R Brigljevic, V Mironov, C Dutta, S Ochando, C Nuzzo, S Rodenburg, M Martschei, D Squires, M Bedjidian, M Blyweert, S Zakaria, M Odell, N Rekovic, V Wetzel, J Hoehle, F Kargoll, B Cure, B Savina, M Kress, T Berryhill, J Nowak, F Cerci, S Willmott, C Ciulli, V Johnson, M Kuessel, Y Linn, A Antonelli, L Van Mulders, P Yetkin, T Honma, A Nowack, A Limon, P Moser, R Saout, C Borcherding, F Ko, W Bourilkov, D Cutajar, M Perchalla, L Sharma, A Pooth, O Dozen, C Rennefeld, J Papadopoulos, I Liko, D Obertino, MM De Wolf, EA Kailas, S Davies, G Rusack, R Wyslouch, B Civinini, C Manolakos, I Frisch, B Nesvold, E De Roeck, A Sauerland, P Thomas, S Pant, LM Della Negra, M Walzel, G Ma, Y Lincoln, D Bayshev, I Stahl, A D'Alessandro, R Thomas, M Pietsch, N Tornier, D Meijers, F Heintz, U Zoeller, MH Martin, MA Dahmes, B Gomez, JA Behrenhoff, W Yi, K Chang, YH Pastrone, N Mazumdar, K Veelken, C Mans, J Gobbo, B Behrens, U Bergholz, M Dumanoglu, I Joshi, U Pineda, AM Mott, A Giammanco, A McBride, P Shukla, P Camporesi, T Barone, L Laasanen, AT Sasseville, M Kumar, A Bethani, A Damiao, DD Cerizza, G Xu, M Chadwick, M Janssen, X Borras, K Lipton, R Cossutti, F Cakir, A Boumediene, D Da Silva, WLP Barnett, BA Toback, D Boeriu, O Campbell, A Castro, E Newman, HB Tomei, TRFP Sala, S Sander, C Kopecky, A Rebane, L Pelliccioni, M de Fatis, TT Josa, MI Shmatov, S Kumar, V Blumenfeld, B Sharma, S Zabi, A Grandi, C Czellar, S Kangal, EE Khatiwada, R Dammann, D Eskut, E Eckerlin, G Eckstein, D Singovsky, A Ferguson, W Monaco, V Flossdorf, A Focardi, E Flucke, G Abdullin, S Dirkes, G Stephans, GSF Selvaggi, M Schettler, H Schleper, P Tosi, M Gritsan, AV Schlieckau, E Giordano, D Dudero, PR Uzun, D Erzynski, RAOF Nguyen, H Veverka, J Rahmat, R Viviani, C Ovyn, S Schroder, M Mozer, MU Gao, Y Flanagan, W Hauk, J Topaksu, AK Ocalan, K Dell'Orso, R Meschini, M Tonelli, G Santoro, A Zhang, Z Mohanty, GB Schum, T Stadie, H Steinbruck, G Hollingsworth, M Thomsen, J Kim, V Barth, C Bauer, J Fulcher, J Guo, ZJ Baringer, P Paoletti, S Gilmore, J Pellett, D Tosi, S Kodolova, O Chabert, EC Van Haevermaet, H Berger, J Anagnostou, G Mane, P Solano, A Buege, V Reyes-Santos, MA Liang, S Bacchetta, N Yang, F Ziebarth, EB Klima, B Ratti, SP Barnes, VE Andrews, W Souza, MHG Villella, I Gurrola, A Saha, A Sudhakar, K Sikler, F Onengut, G Wickramage, N Smirnov, V De Benedetti, A Remington, R Sguazzoni, G Robles, J Leonardo, N Levchenko, P Malbouisson, H Banerjee, S Dugad, S Do Amaral, SMS Staiano, A Potenza, A Castello, R Kamon, T Kim, GN Mondal, NK Shipkowski, SP Ferrando, A Mazzucato, M Haupt, J O'Dell, V Gu, J Wilkinson, R Ruspa, M Jung, H Arfaei, H Demaria, N Bakhshiansohi, H Salur, S Etesami, SM Foa, L Trayanov, R Innocente, V Fahim, A Askew, A Heo, SG Kasemann, M Yang, Y Charaf, O Hartmann, F Murzin, V Fano, L Hashemi, M Jorda, C Singh, J Heyburn, B Hesari, H Collard, C Katkov, I Kim, JE Zhu, RY Daskalakis, G Hu, G Smith, K Schwarz, T Jafari, A Heracleous, N Oreshkin, V Khakzad, M Tropiano, A Pin, A Mohammadi, A Bitioukov, S Harris, RM Najafabadi, MM Mehdiabadi, SP Van Mechelen, P Castro, A Mattson, M Safarzadeh, B Khotilovich, V Sanchez, MCD Aguilar-Benitez, M Janot, P Song, S Avery, P Van Doninck, W Mulders, M Wan, Z Zeinali, M Abbrescia, M Searle, M Malik, S Rizzi, A Frosali, S Maksimovic, P Ozdemir, K Trocino, D Kong, DJ Kotov, K Choudhary, BC Muller, T Barney, D Tiko, A Clerbaux, B Gregoire, G Barbone, L Katsas, P Calabria, C Conte, E Sanders, DA Futyan, D Biselli, A Colaleo, A Creanza, D Barberis, E Meschi, E De Filippis, N Kyriakis, A Agram, JL Sharp, P Montalvo, R Gilbert, A Brun, H Pagano, D De Palma, M Fiore, L Rappoccio, S Sierra, RV Obraztsov, S Benussi, L Hansel, S Pivarski, J Iaydjiev, P Drouhin, F Kaadze, K Perfilov, M Pozdnyakov, A Ozturk, S Nam, SK Osipenkov, I Berry, D Heinrich, M Bonato, A Bryer, AG Parracho, PGF Hebbeker, T Arisaka, K Snow, GR Iaselli, G Smith, J Lusito, L Maggi, G De Lentdecker, G Akgun, B Schmidt, R Tambe, N Hoffmann, HF Maggi, M Smirnov, I Manna, N Wenger, EA Redaelli, N Waltenberger, W Bianco, S Colafranceschi, S Lee, YJ Fabbri, F Spanier, S Pardos, CD Akchurin, N Piccolo, D Fabbricatore, P Blekman, F Schlein, P Alda Junior, WL Markowitz, P Giassi, A Benelli, G Thomas, L Volodko, A Merino, G Carroll, R Musenich, R Romero, L Summers, D Karim, M Pacifico, N Romanowska-Rybinska, K Cline, D Liu, F Pardo, PL Kleinwort, C Dermenev, A Auzinger, G Cole, JE Alverson, G Choi, S Benaglia, A Giordano, F De Guio, F Di Matteo, L Ferro, C Gennai, S Santocchia, A Vergili, LN Ghezzi, A Malvezzi, S Ferguson, T Bardak, C Belyaev, A Gouskos, L Sill, A Gninenko, S Le Bihan, AC Taylor, L Triantis, FA Kluge, H Singh, AP Niegel, M Martelli, A Massironi, A Cavallo, FR Hidas, P Lethuillier, M Masetti, L Menasce, D Ronga, FJ Grachov, O Guchait, M Grishin, V Ruchti, R Torre, P Vuosalo, C Baur, U Garcia-Abia, P Mousa, J Gleyzer, SV Hong, B Jo, M Mikami, Y Topakli, H Kim, H Kim, JH Matorras, F Venturi, A Cousins, R Kim, TJ Polatoz, A Van Remortel, N Tully, C Golubev, N Tkaczyk, S Knutsson, A Azzolini, V Hall, G Vergili, M Zaganidis, N Lee, KS Moon, DH Jarrin, EC Maurisset, A Karavakis, E Glege, F Van Hove, P Gaddi, A Hatherell, Z Pimia, M Park, SK Hollar, J Hahn, KA Maestre, JA Devroede, O Schmitt, M Pavlov, B Iii, RPK Maki, T Maity, M Piotrzkowski, K Pierro, GA Sim, KS Gouzevitch, M Choi, M Uplegger, L Kang, S Marco, J Green, D Kim, H Gray, R Park, C Kramer, M Koybasi, O Orimoto, T Pompili, A Murray, M Park, IC Montoya, CAC Akin, IV Soares, MS Pandolfi, F Park, S Basegmez, S Henderson, C Mariotti, C Kellogg, RG Ryu, G Oberst, O Pugliese, G Piparo, D Noonan, D Branson, JG Vitulo, P Damgov, J Liao, J Perez, E Vaandering, EW Choi, Y Veres, GI Aliev, T Choi, YK Kirsanov, M Fisher, M Bedoya, CF Swartz, M Goh, J Deisher, A Jindal, P Liu, H Kim, MS Lee, B Cavallo, N Gorski, M Reithler, H Maselli, S Lee, J Fassi, F Lykken, J Prokofyev, O Lee, S Rogan, C Schwick, C Durkin, LS Mila, G Iglesias, LL Vanini, S Goodell, J Seo, H Yu, I Vidal, R Bruno, G Tapper, A Sordini, V Sulimov, V Jeong, C Duris, J Aranyi, A Caebergs, T Polese, G Chen, HS Migliore, E Bisello, D 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Epshteyn, V Nespolo, M Lange, W Kypreos, T Gavrilov, V Everett, A Marco, R Yazgan, E Schael, S Kaftanov, V Sogut, K Kolb, J Zhukova, V Kossov, M Buontempo, S Marlow, D Adler, V Schieferdecker, P Krofcheck, D Tourtchanovitch, L Liu, ZK Das, S Yelton, J Lemaitre, V Roselli, G Surat, UE Merola, M Ille, B Cirino, G Militaru, O Karapostoli, G Segoni, I Krokhotin, A Sellers, P Lychkovskaya, N Popov, V Er, TPF Safronov, G Lohmann, W Caballero, IG Tucker, J Sheldon, P Semenov, S Stolin, V Barfuss, AF Contardo, D Ert, PGF Taroni, S Perries, S Yildirim, E Gurtu, A Schilling, FP Mertzimekis, TJ Kolberg, T Kraan, A Selvaggi, G Graziano, A Branca, A Vlasov, E Zhokin, A Kazana, M Segneri, G Cremaldi, LM Lourenco, C Foudas, C Boos, E Dubinin, M Acosta, MV Appelt, E Ro, SR Valuev, V Stoykova, S Lopez, SG Meng, X Serin, M Mankel, R Ceard, L Gude, A Martins, CD Maroussov, V Sharma, A Siegrist, P Schott, G Rakness, G Simon, M Lyons, L Sphicas, P Andreev, Y Xiao, H Baillon, P De Gruttola, M Spiropulu, M 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Maeshima, K Weinberg, M CMS Collaboration Ballin, J Feindt, M Lu, RS Kress, M Kumar, A Gruschke, J Grunewald, M Costa, S Steggemann, J Vlimant, JR Lath, A Raspereza, A Krpic, D Kinnunen, R Rovere, M Kortelainen, MJ Lampen, T Cooper, W Gupta, P Lassila-Perini, K Kaussen, G Lehti, S |
Keywords: | Hadron-Hadron Scattering |
Issue Date: | 2011 |
Publisher: | Springer-Verlag |
Citation: | Journal of High Energy Physics (8): 005, Aug 2011 |
Abstract: | An inclusive search for same-sign top-quark pair production in pp collisions at √s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb^(−1). This analysis is motivated by recent studies of pp → tt reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z′). Models with such a Z′ also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z′ mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results. |
URI: | http://bura.brunel.ac.uk/handle/2438/6098 http://www.springerlink.com/content/gq574353q5252158/ |
DOI: | http://dx.doi.org/10.1007/JHEP08(2011)005 |
ISSN: | 1126-6708 |
Appears in Collections: | Electronic and Computer Engineering Dept of Electronic and Electrical Engineering Research Papers
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