Title: | Measurement of top quark–antiquark pair production in association with a W or Z boson in pp collisions at √s = 8 TeV |
Authors: | The, CMSC Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Cerrada, M Bose, S Claes, DR Dominguez, A Gonzalez Suarez, R Keller, J Knowlton, D Kravchenko, I Lazo-Flores, J Malik, S Krätschmer, I Chamizo Llatas, M Asawatangtrakuldee, C Meier, F Snow, GR Dolen, J Godshalk, A Iashvili, I Jain, S Kharchilava, A Kumar, A Rappoccio, S Colino, N Alverson, G Ban, Y Barberis, E Baumgartel, D Chasco, M Haley, J Massironi, A Nash, D Orimoto, T Trocino, D De La Cruz, B Wood, D Zhang, J Guo, Y Anastassov, A Hahn, KA Kubik, A Lusito, L Mucia, N Odell, N Pollack, B Delgado Peris, A Pozdnyakov, A Schmitt, M Stoynev, S Li, Q Sung, K Velasco, M Won, S Brinkerhoff, A Chan, KM Drozdetskiy, A Domínguez Vázquez, D Hildreth, M Jessop, C Karmgard, DJ Kellams, N Li, W Lannon, K Luo, W Lynch, S Marinelli, N Pearson, T Escalante Del Valle, A Planer, M Ruchti, R Valls, N Wayne, M Wolf, M Liu, S Woodard, A Antonelli, L Brinson, J Bylsma, B Fernandez Bedoya, C Durkin, LS Flowers, S Hill, C Hughes, R Kotov, K Ling, TY Mao, Y Puigh, D Rodenburg, M Smith, G Fernández Ramos, JP Winer, BL Wolfe, H Wulsin, HW Driga, O Elmer, P Hebda, P Hunt, A Qian, SJ Koay, SA Lujan, P Flix, J Marlow, D Medvedeva, T Mooney, M Olsen, J Piroué, P Quan, X Saka, H Stickland, D Wang, D Tully, C Zaganidis, N du Pree, T Werner, JS Zenz, SC Zuranski, A Brownson, E Mendez, H Ramirez Vargas, JE Alagoz, E Barnes, VE Benedetti, D Zhang, L Fouz, MC Bolla, G Bortoletto, D De Mattia, M Hu, Z Jha, MK Jones, M Jung, K Kress, M Leonardo, N Lopes Pegna, D Garcia-Abia, P Liko, D Zou, W Maroussov, V Merkel, P Miller, DH Neumeister, N Radburn-Smith, BC Shi, X Shipsey, I Silvers, D Gonzalez Lopez, O Svyatkovskiy, A Wang, F Avila, C Xie, W Xu, L Yoo, HD Zablocki, J Zheng, Y Parashar, N Stupak, J Goy Lopez, S Adair, A Akgun, B Ecklund, KM Chaparro Sierra, LF Geurts, FJM Li, W Michlin, B Padley, BP Redjimi, R Roberts, J Hernandez, JM Zabel, J Betchart, B Bodek, A Covarelli, R Florez, C de Barbaro, P Demina, R Eshaq, Y Ferbel, T Garcia-Bellido, A Josa, MI Goldenzweig, P Han, J Harel, A Khukhunaishvili, A Petrillo, G Gomez, JP Vishnevskiy, D Ciesielski, R Demortier, L Goulianos, K Merino, G Lungu, G Mesropian, C Arora, S Barker, A Chou, JP Contreras-Campana, C Gomez Moreno, B Contreras-Campana, E Duggan, D Ferencek, D Navarro De Martino, E Gershtein, Y Gray, R Halkiadakis, E Hidas, D Lath, A Panwalkar, S Park, M Sanabria, JC Patel, R Salur, S Pérez-Calero Yzquierdo, A Schnetzer, S Somalwar, S Stone, R Thomas, S Thomassen, P Walker, M Rose, K Spanier, S Godinovic, N York, A Shmatov, S Puerta Pelayo, J Bouhali, O Eusebi, R Flanagan, W Gilmore, J Kamon, T Khotilovich, V Krutelyov, V Montalvo, R Osipenkov, I Lelas, D Ghete, VM Pakhotin, Y Perloff, A Roe, J Rose, A Safonov, A Sakuma, T Suarez, I Tatarinov, A Akchurin, N Cowden, C Favart, D Polic, D Damgov, J Dragoiu, C Dudero, PR Faulkner, J Kovitanggoon, K Kunori, S Lee, SW Libeiro, T Volobouev, I Quintario Olmeda, A Appelt, E Mikulec, I Puljak, I Delannoy, AG Greene, S Gurrola, A Johns, W Maguire, C Mao, Y Melo, A Redondo, I Sharma, M Sheldon, P Snook, B Antunovic, Z Tuo, S Velkovska, J Arenton, MW Boutle, S Cox, B Francis, B Romero, L Goodell, J Hirosky, R Ledovskoy, A Li, H Kovac, M Lin, C Neu, C Wood, J Clarke, C Harr, R Soares, MS Karchin, PE Kottachchi Kankanamge Don, C Lamichhane, P Sturdy, J Belknap, DA Brigljevic, V Carlsmith, D Cepeda, M Dasu, S Dodd, L Albajar, C Duric, S Friis, E Hall-Wilton, R Herndon, M Hervé, A Klabbers, P Kadija, K Lanaro, A Lazaridis, C Levine, A de Trocóniz, JF Loveless, R Mohapatra, A Ojalvo, I Perry, T Pierro, GA Polese, G Ross, I Luetic, J Sarangi, T Savin, A Missiroli, M Smith, WH Vuosalo, C Woods, N Collaboration, ATCMS Mekterovic, D Sudic, L Attikis, A Mavromanolakis, G Rabady, D Mousa, J Shulha, S Moran, D Nicolaou, C Ptochos, F Razis, PA Bodlak, M Finger, M Finger, M Assran, Y Ellithi Kamel, A Mahmoud, MA Rahbaran, B Brun, H Radi, A Kadastik, M Murumaa, M Raidal, M Tiko, A Eerola, P Fedi, G Voutilainen, M Härkönen, J Karimäki, V Cuevas, J Rohringer, H Kinnunen, R Kortelainen, MJ Lampén, T Lassila-Perini, K Lehti, S Lindén, T Luukka, P Mäenpää, T Peltola, T Forthomme, L Tuominen, E Schöfbeck, R Tuominiemi, J Tuovinen, E Wendland, L Tuuva, T Besancon, M Couderc, F Dejardin, M Denegri, D Fernandez Menendez, J Fabbro, B Faure, JL Strauss, J Favaro, C Ferri, F Ganjour, S Givernaud, A Gras, P Hamel de Monchenault, G Jarry, P Folgueras, S Locci, E Malcles, J Rander, J Taurok, A Rosowsky, A Titov, M Baffioni, S Beaudette, F Busson, P Charlot, C Gonzalez Caballero, I Dahms, T Dalchenko, M Dobrzynski, L Filipovic, N Treberer-Treberspurg, W Florent, A Granier de Cassagnac, R Mastrolorenzo, L Miné, P Mironov, C Lloret Iglesias, L Naranjo, IN Nguyen, M Ochando, C Paganini, P Regnard, S Waltenberger, W Salerno, R Sauvan, JB Sirois, Y Veelken, C Brochero Cifuentes, JA Yilmaz, Y Zabi, A Agram, J-L Andrea, J Aubin, A Bloch, D Wulz, C-E Brom, J-M Chabert, EC Collard, C Cabrillo, IJ Conte, E Fontaine, J-C Gelé, D Goerlach, U Goetzmann, C Le Bihan, A-C Van Hove, P Mossolov, V Gadrat, S Beauceron, S Skatchkov, N Calderon, A Beaupere, N Boudoul, G Bouvier, E Brochet, S Carrillo Montoya, CA Chasserat, J Chierici, R Contardo, D Shumeiko, N Depasse, P Duarte Campderros, J El Mamouni, H Fan, J Fay, J Gascon, S Gouzevitch, M Ille, B Kurca, T Lethuillier, M Mirabito, L Suarez Gonzalez, J Fernandez, M Perries, S Ruiz Alvarez, JD Sabes, D Sgandurra, L Sordini, V Vander Donckt, M Verdier, P Viret, S Xiao, H Tsamalaidze, Z Gomez, G Alderweireldt, S Autermann, C Beranek, S Bontenackels, M Edelhoff, M Feld, L Hindrichs, O Klein, K Ostapchuk, A Perieanu, A Giammanco, A Raupach, F Bansal, M Sammet, J Schael, S Weber, H Wittmer, B Zhukov, V Ata, M Dietz-Laursonn, E Duchardt, D Graziano, A Erdmann, M Fischer, R Bansal, S Güth, A Hebbeker, T Heidemann, C Hoepfner, K Klingebiel, D Knutzen, S Kreuzer, P Lopez Virto, A Merschmeyer, M Meyer, A Millet, P Cornelis, T Olschewski, M Padeken, K Papacz, P Reithler, H Schmitz, SA Sonnenschein, L Marco, J Teyssier, D Thüer, S Weber, M Cherepanov, V De Wolf, EA Erdogan, Y Flügge, G Geenen, H Geisler, M Haj Ahmad, W Marco, R Heister, A Hoehle, F Kargoll, B Kress, T Kuessel, Y Janssen, X Lingemann, J Nowack, A Nugent, IM Perchalla, L Martinez Rivero, C Pooth, O Stahl, A Asin, I Bartosik, N Behr, J Behrenhoff, W Knutsson, A Behrens, U Bell, AJ Bergholz, M Smirnov, V Matorras, F Bethani, A Borras, K Burgmeier, A Cakir, A Calligaris, L Campbell, A Choudhury, S Luyckx, S Costanza, F Diez Pardos, C Munoz Sanchez, FJ Dooling, S Dorland, T Eckerlin, G Eckstein, D Eichhorn, T Flucke, G Garcia, JG Geiser, A Ochesanu, S Gunnellini, P Piedra Gomez, J Hauk, J Hellwig, G Hempel, M Horton, D Jung, H Kalogeropoulos, A Kasemann, M Katsas, P Kieseler, J Roland, B Rodrigo, T Kleinwort, C Krücker, D Lange, W Leonard, J Lipka, K Lobanov, A Lohmann, W Lutz, B Mankel, R Marfin, I Rodríguez-Marrero, AY Rougny, R Melzer-Pellmann, I-A Meyer, AB Mnich, J Mussgiller, A Naumann-Emme, S Nayak, A Novgorodova, O Nowak, F Ntomari, E Hollar, J Perrey, H Van De Klundert, M Pitzl, D Placakyte, R Raspereza, A Ribeiro Cipriano, PM Ron, E Sahin, MÖ Salfeld-Nebgen, J Saxena, P Ruiz-Jimeno, A Schmidt, R Schoerner-Sadenius, T Van Haevermaet, H Schröder, M Seitz, C Spannagel, S Vargas Trevino, ADR Walsh, R Wissing, C Aldaya Martin, M Scodellaro, L Blobel, V Centis Vignali, M Draeger, A Van Mechelen, P Erfle, J Garutti, E Goebel, K Görner, M Haller, J Hoffmann, M Vila, I Höing, RS Kirschenmann, H Klanner, R Kogler, R Van Remortel, N Lange, J Lapsien, T Lenz, T Marchesini, I Ott, J Vilar Cortabitarte, R Peiffer, T Pietsch, N Poehlsen, J Poehlsen, T Rathjens, D Van Spilbeeck, A Sander, C Schettler, H Schleper, P Schlieckau, E Tikhonenko, E Abbaneo, D Schmidt, A Seidel, M Sola, V Stadie, H Steinbrück, G Troendle, D Blekman, F Usai, E Vanelderen, L Barth, C Auffray, E Baus, C Berger, J Böser, C Butz, E Chwalek, T De Boer, W Descroix, A Blyweert, S Dierlamm, A Feindt, M Auzinger, G Frensch, F Giffels, M Hartmann, F Hauth, T Husemann, U Katkov, I Kornmayer, A Kuznetsova, E D Hondt, J Lobelle Pardo, P Bachtis, M Mozer, MU Müller, T Nürnberg, A Quast, G Rabbertz, K Ratnikov, F Röcker, S Simonis, HJ Stober, FM Daci, N Baillon, P Ulrich, R Wagner-Kuhr, J Wayand, S Weiler, T Wolf, R Anagnostou, G Daskalakis, G Geralis, T Giakoumopoulou, VA Kyriakis, A Ball, AH Heracleous, N Loukas, D Markou, A Markou, C Psallidas, A Topsis-Giotis, I Panagiotou, A Saoulidou, N Stiliaris, E Aslanoglou, X Jez, P Evangelou, I Keaveney, J Flouris, G Foudas, C Kokkas, P Manthos, N Papadopoulos, I Paradas, E Bencze, G Hajdu, C Barney, D Hidas, P Horvath, D Lowette, S Sikler, F Veszpremi, V Vesztergombi, G Zsigmond, AJ Beni, N Czellar, S Karancsi, J Benaglia, A Molnar, J Palinkas, J Szillasi, Z Maes, M Raics, P Trocsanyi, ZL Ujvari, B Swain, SK Beri, SB Bhatnagar, V Bendavid, J Dhingra, N Gupta, R 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I Calabria, C Chhibra, SS Colaleo, A Creanza, D De Filippis, N De Palma, M Fiore, L Iaselli, G Bondu, O Maggi, G Maggi, M Caillol, C My, S Nuzzo, S Pompili, A Pugliese, G Radogna, R Selvaggi, G Silvestris, L Botta, C Singh, G Venditti, R Verwilligen, P Clerbaux, B Zito, G Abbiendi, G Benvenuti, AC Bonacorsi, D Braibant-Giacomelli, S Brigliadori, L Golovtsov, V Breuker, H Campanini, R Capiluppi, P Castro, A Cavallo, FR De Lentdecker, G Codispoti, G Cuffiani, M Dallavalle, GM Fabbri, F Fanfani, A Camporesi, T Fasanella, D Giacomelli, P Grandi, C Guiducci, L Marcellini, S Dobur, D Masetti, G Montanari, A Navarria, FL Perrotta, A Cerminara, G Primavera, F Rossi, AM Rovelli, T Siroli, GP Tosi, N Travaglini, R Favart, L Albergo, S Cappello, G Chiorboli, M Colafranceschi, S Costa, S Giordano, F Potenza, R Tricomi, A Tuve, C Barbagli, G Ciulli, V Gay, APR Civinini, C D Alessandro, R D Alfonso, M Focardi, E Gallo, E Gonzi, S Gori, V Lenzi, P Meschini, M Paoletti, S Sguazzoni, G Grebenyuk, A Tropiano, A d Enterria, D Benussi, L Bianco, S Fabbri, F Piccolo, D Ferro, F Lo Vetere, M Robutti, E Tosi, S Dinardo, ME Léonard, A Dabrowski, A Fiorendi, S Gennai, S Gerosa, R Ghezzi, A Govoni, P Lucchini, MT Malvezzi, S Manzoni, RA Martelli, A Marzocchi, B David, A Mohammadi, A Menasce, D Moroni, L Paganoni, M Pedrini, D Ragazzi, S Redaelli, N Tabarelli de Fatis, T Buontempo, S Cavallo, N Lemaitre, V Di Guida, S Perniè, L Fabozzi, F Iorio, AOM Lista, L Meola, S Merola, M Paolucci, P Azzi, P Bacchetta, N De Guio, F Bisello, D Branca, A Reis, T Carlin, R Checchia, P Dall Osso, M Dorigo, T Dosselli, U Fanzago, F Galanti, M Ivanov, Y De Roeck, A Gasparini, F Giubilato, U Gozzelino, A Seva, T Kanishchev, K Lacaprara, S Margoni, M Meneguzzo, AT Montecassiano, F Pazzini, J De Visscher, S Pozzobon, N Ronchese, P Simonetto, F Torassa, E Thomas, L Tosi, M Zotto, P Zucchetta, A Zumerle, G Gabusi, M Dobson, M Ratti, SP Riccardi, C Salvini, P Vitulo, P Biasini, M Vander Velde, C Bilei, GM Ciangottini, D Fanò, L Lariccia, P Dordevic, M Mantovani, G Menichelli, M Romeo, F Saha, A Santocchia, A Spiezia, A Vanlaer, P Androsov, K Azzurri, P Bagliesi, G Dupont-Sagorin, N Bernardini, J Boccali, T Broccolo, G Castaldi, R Ciocci, MA Dell Orso, R Donato, S Wang, J Fiori, F Foà, L Elliott-Peisert, A Giassi, A Grippo, MT Ligabue, F Lomtadze, T Martini, L Messineo, A Moon, CS Palla, F Adler, V Rizzi, A Eugster, J Savoy-Navarro, A Serban, AT Spagnolo, P Squillacioti, P Tenchini, R Tonelli, G Venturi, A Verdini, PG Vernieri, C Beernaert, K Franzoni, G Barone, L Cavallari, F D imperio, G Del Re, D Diemoz, M Grassi, M Jorda, C Longo, E Margaroli, F Meridiani, P Funk, W Benucci, L Micheli, F Nourbakhsh, S Organtini, G Paramatti, R Rahatlou, S Rovelli, C Santanastasio, F Soffi, L Traczyk, P Nuttens, C Amapane, N Cimmino, A Arcidiacono, R Argiro, S Arneodo, M Bellan, R Biino, C Cartiglia, N Casasso, S Costa, M Kim, V Gigi, D Degano, A Demaria, N Costantini, S Finco, L Mariotti, C Maselli, S Migliore, E Monaco, V Musich, M Obertino, MM Gill, K Ortona, G Pacher, L Pastrone, N Crucy, S Pelliccioni, M Pinna Angioni, GL Potenza, A Romero, A Ruspa, M Sacchi, R Giordano, D Solano, A Staiano, A Tamponi, U Belforte, S Dildick, S Candelise, V Casarsa, M Cossutti, F Della Ricca, G Gobbo, B Girone, M La Licata, C Marone, M Montanino, D Schizzi, A Umer, T Fagot, A Zanetti, A Kim, TJ Chang, S Kropivnitskaya, A Glege, F Nam, SK Kim, DH Kim, GN Kim, MS Kim, MS Kong, DJ Garcia, G Lee, S Oh, YD Park, H Guida, R Sakharov, A Son, DC Kim, JY Song, S Choi, S Gyun, D Hong, B Mccartin, J Jo, M Kim, H Gundacker, S Kim, Y Lee, B Lee, KS Park, SK Roh, Y Choi, M Kim, JH Park, IC Ocampo Rios, AA Park, S Guthoff, M Ryu, G Ryu, MS Choi, Y Choi, YK Goh, J Kim, D Kwon, E Lee, J Seo, H Ryckbosch, D Guida, R Yu, I Juodagalvis, A Komaragiri, JR Md Ali, MAB Castilla-Valdez, H De La Cruz-Burelo, E Heredia-de La Cruz, I Lopez-Fernandez, R Sanchez-Hernandez, A Carrillo Moreno, S Hammer, J Salva Diblen, S Vazquez Valencia, F Pedraza, I Salazar Ibarguen, HA Casimiro Linares, E Morelos Pineda, A Krofcheck, D Butler, PH Reucroft, S Ahmad, A Levchenko, P Pagano, D Ahmad, M Sigamani, M Hassan, Q Hoorani, HR Khalid, S Khan, WA Khurshid, T Shah, MA Shoaib, M Bialkowska, H Hansen, M Bluj, M Boimska, B Strobbe, N Frueboes, T Górski, M Kazana, M Nawrocki, K Romanowska-Rybinska, K Szleper, M Zalewski, P Harris, P Brona, G Bunkowski, K Cwiok, M Thyssen, F Dominik, W Doroba, K Kalinowski, A Konecki, M Krolikowski, J Misiura, M Hegeman, J Olszewski, M Wolszczak, W Bargassa, P Beirão Da Cruz E Silva, C Tytgat, M Faccioli, P Ferreira Parracho, PG Gallinaro, M Nguyen, F Rodrigues Antunes, J Innocente, V Seixas, J Varela, J Vischia, P Golutvin, I Karjavin, V Yazgan, E Konoplyanikov, V Korenkov, V Kozlov, G Lanev, A Janot, P Malakhov, A Matveev, V Mitsyn, VV Moisenz, P Palichik, V Perelygin, V Kousouris, K Krajczar, K Lecoq, P Lourenço, C Basegmez, S Magini, N Perrini, L Malgeri, L Mannelli, M Marrouche, J Masetti, L Meijers, F Mersi, S Meschi, E Moortgat, F Murzin, V Morovic, S Mulders, M Hartl, C Pin, A Musella, P Orsini, L Pape, L Perez, E Perrozzi, L Petrilli, A Oreshkin, V Petrucciani, G Pfeiffer, A Pierini, M Pimiä, M Piotrzkowski, K Piparo, D Plagge, M Racz, A Rolandi, G Rovere, M Smirnov, I Sakulin, H Schäfer, C Schwick, C Sharma, A Siegrist, P Popov, A Silva, P Simon, M Sphicas, P Spiga, D Sulimov, V Steggemann, J Stieger, B Stoye, M Treille, D Tsirou, A Veres, GI Quertenmont, L Vlimant, JR Wardle, N Wöhri, HK Uvarov, L Wollny, H Zeuner, WD Bertl, W Deiters, K Erdmann, W Horisberger, R Ingram, Q Selvaggi, M Kaestli, HC Kotlinski, D Vavilov, S Langenegger, U Renker, D Rohe, T Bachmair, F Bäni, L Bianchini, L Bortignon, P Buchmann, MA Vidal Marono, M Casal, B Vorobyev, A Chanon, N Deisher, A Dissertori, G Dittmar, M Donegà, M Dünser, M Eller, P Grab, C Hits, D Vizan Garcia, JM Vorobyev, A Lustermann, W Mangano, B Marini, AC Martinez Ruiz del Arbol, P Meister, D Mohr, N Nägeli, C 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Keywords: | measurement of the cross section for the production of top quark;Proton-proton collisions |
Issue Date: | 2014 |
Publisher: | Springer New York LLC |
Citation: | European Physical Journal C, 74:9, 2014 |
Abstract: | A measurement of the cross section for the production of top quark–antiquark pairs (tt¯) in association with a vector boson V (W or Z) in proton-proton collisions at √s = 8 TeV is presented. The results are based on a dataset corresponding to an integrated luminosity of 19.5 fb-1 recorded with the CMS detector at the LHC. The measurement is performed in three leptonic (e and μ) channels: a same-sign dilepton analysis targeting tt¯W events, and trilepton and four-lepton analyses designed for (Formula presented.) events. In the same-sign dilepton channel, the (Formula presented.) cross section is measured as (Formula presented.), corresponding to a significance of 1.6 standard deviations over the background-only hypothesis. Combining the trilepton and four-lepton channels, a direct measurement of the (Formula presented.) cross section, (Formula presented.), is obtained with a significance of 3.1 standard deviations. The measured cross sections are compatible with standard model predictions within their experimental uncertainties. The inclusive (Formula presented.) process is observed with a significance of 3.7 standard deviations from the combination of all three leptonic channels. |
URI: | http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-014-3060-7 http://bura.brunel.ac.uk/handle/2438/10211 |
DOI: | http://dx.doi.org/10.1140/epjc/s10052-014-3060-7 |
ISSN: | 1434-6052 |
Appears in Collections: | Mathematical Physics
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