Search for standard model production of four top quarks in the lepton + jets channel in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV

Autor: Oliver Pooth, Dominick Olivito, Jan Steggemann, J. Sekaric, Julie Malcles, Georg Steinbrück, Suzan Basegmez, Mithat Kaya, Suyong Choi, Etiennette Auffray, Maurizio Biasini, T. Yetkin, Marta Felcini, A. Tropiano, Jeremy Mans, Agni Bethani, Shengquan Tuo, Colin Jessop, J. P. Fernández Ramos, Barbara Clerbaux, Richard Vidal, Zviad Tsamalaidze, Matthias Kasemann, Joachim Erfle, Marcello Maggi, Davide Piccolo, Vincenzo Monaco, Cristina Tuve, Nikolai Skatchkov, Louis Antonelli, B. Lutz, Konstantinos Theofilatos, Sandor Czellar, Manuel Giffels, Pavel Bunin, K. Y. Kao, Michael Albrow, Matthew Snowball, Hamed Bakhshiansohi, Guo-Ming Chen, A. Ershov, Stephan Linn, Marguerite Tonjes, David Mark Raymond, K. Goulianos, Olivier Bondu, Arabella Martelli, Victoria Zhukova, Muhammad Ahmad, Felix Hoehle, Suman Bala Beri, Miroslav Finger, Borislav Pavlov, Csaba Hajdu, Emyr Clement, Christophe Delaere, Vivian O'Dell, Alex Kamenev, Victor Kim, Gian Mario Bilei, Mario Masciovecchio, Stefano Marcellini, Armando Lanaro, Daniel Bloch, Maiko Takahashi, James Letts, B. Tali, Paola Salvini, Vivek Sharma, Adrien Caudron, Marcos Fernandez, Young-Il Choi, Florian Beaudette, Andrew Kubik, Alexander Gude, Ernesto Migliore, P. Lawson, Guido Tonelli, Giuseppe Benedetto Cerati, Artur Kalinowski, R. Ferretti, Lucija Sudic, Hans-Jürgen Simonis, Todd Adams, Zeljko Antunovic, Claudia-Elisabeth Wulz, Christoph Paus, Wolfgang Waltenberger, Piergiulio Lenzi, James D. Olsen, S. Sumowidagdo, Pedro Silva, Wit Busza, Mani Tripathi, Marco Peruzzi, L. Lloret Iglesias, Owen Rosser Long, Warren Clarida, Cesare Calabria, Nicola Amapane, D. Vishnevskiy, Matteo Sani, Andreas Nowack, Vladimir Genchev, Ryan Kelley, Paraskevas Sphicas, G. Bianchi, Hui Li, Salvatore My, Alberto Benvenuti, Vipin Bhatnagar, Danilo Piparo, Maria Agnese Ciocci, Dave Pellett, Marko Kovac, Leonid Tourtchanovitch, Maria Florencia Canelli, Fabrizio Ferro, Thomas Ferbel, Dan Green, Lars Sonnenschein, Marta Ruspa, Regina Demina, Stepan Obraztsov, James Dolen, Marcella Diemoz, Kristen Flowers, Carl Vuosalo, J. Y. Kim, Nikolai Shumeiko, Bora Akgun, Raffaella Radogna, J. S. Lange, Marco-Andrea Buchmann, Frank Hartmann, Clara Jorda, Nicholas Wardle, Freya Blekman, Ilse Krätschmer, David Michael Morse, Vassili Maroussov, Natale Demaria, J. Sammet, Kamuran Dilsiz, Kai-Feng Chen, Eleni Ntomari, Paolo Rumerio, Lorenzo Uplegger, Jan Hoss, William T. Ford, Matthew Walker, Andréia Márcia Santos de Souza David, Luigi Guiducci, Gregory R Snow, L. Winstrom, Jared Turkewitz, Igor Volobouev, Will Flanagan, Luciano Orsini, Luca Pacher, Vasile Mihai Ghete, Ettore Focardi, Jeannine Wagner-Kuhr, John Rander, Claire Shepherd-Themistocleous, Antonis Agapitos, Benoit Roland, Josef Strauss, Daniel Denegri, Giacomo Sguazzoni, Alan Campbell, C. Markou, Christian Autermann, Piotr Zalewski, Vitaly Smirnov, Dragos Velicanu, Qamar Hassan, Nuno Leonardo, T. Poehlsen, Maciej Górski, Anna Kropivnitskaya, P. de Barbaro, Sara Bolognesi, Kenneth Bloom, Harold Nguyen, Thomas Perry, M. De Mattia, Roberto Sacchi, John Michael Marraffino, Natascha Hörmann, Cesar Augusto Bernardes, Aniello Spiezia, Cosmin Dragoiu, Hartmut Stadie, James Zabel, Sebastian Thüer, Vyacheslav Valuev, Ren-Yuan Zhu, Kristian Harder, Alberto Santoro, Lamia Benhabib, Hannsjoerg Artur Weber, Gordon H. Hanson, Geonmo Ryu, Gabriella Pugliese, Pramod Lamichhane, Ajit Mohapatra, Kevin Lannon, G. Della Ricca, Guenakh Mitselmakher, Jordan Damgov, Grigory Safronov, Kirti Ranjan, Pascal Vanlaer, Luciano Barone, Richard Breedon, P. Van Mechelen, Iasonas Topsis-Giotis, Alexander Toropin, L. Perchalla, Claude Amsler, Virgil E Barnes, Marko Ekmedzic, Laurent Favart, Erik Butz, Cristian Pena, Teng Ma, Thomas Reis, Kristin Goebel, Frank Würthwein, Manas Maity, Sara Alderweireldt, Alexi Mestvirishvili, Ulrich Goerlach, Massimo Casarsa, Steve Nahn, Paolo Capiluppi, James Rohlf, Carlos Avila, Sergei Bitioukov, John L Wood, Jan Veverka, Ricardo Eusebi, David Petyt, Dan Knowlton, Tejinder Virdee, Nicolò Tosi, Seth Conrad Zenz, Andrew Godshalk, Xiaohang Quan, M. Vidal Marono, S. De Visscher, Julia Thom, M. Ivova Rikova, Finn Rebassoo, Souvik Das, Volker Blobel, Lucia Silvestris, G. Kukartsev, Subir Sarkar, A. Nürnberg, Emanuele Usai, Andreas Hinzmann, Sarah Kate Boutle, Matt J. Jarvis, Marcin Konecki, Nikoloz Skhirtladze, E. Navarro De Martino, Alexandre Aubin, Azeddine Kasmi, Giuseppe Codispoti, Vladimir Petrov, Thomas N. Williams, Stefan Wayand, Andrey Ostapchuk, Scott Wilbur, John Stupak, Raffaele Gerosa, Alexander Ledovskoy, Vincent J Smith, Simone Paoletti, Rebecca Lane, V. Bunichev, T. J. Pearson, Alessio Ghezzi, M. Luk, Johannes Haller, Robert M Harris, Valentin Knünz, Louis Sgandurra, David Colling, Natalia Lychkovskaya, A. Gurtu, Timo Peltola, Brian Pollack, Ashutosh Bhardwaj, Helmut Vogel, Neeti Parashar, Klaus Rabbertz, Sebastiano Albergo, Igor Lokhtin, Michael Schmitt, Paul Turner, Robert M Brown, Carlo Rovelli, Artur Lobanov, Nathaniel Pastika, Ioannis Evangelou, Fedor Ratnikov, G. Lungu, Jian-Guo Bian, Andrey Pozdnyakov, Matthew Chasco, Luigi Benussi, R. Ciesielski, Gouranga Kole, Suchandra Dutta, Anne-Marie Magnan, Wagner Carvalho, S. C. Kao, Greg Landsberg, Cécile Caillol, Souparno Ghosh, Sw. Banerjee, Kelly Beernaert, M. Vergili, A. Quintario Olmeda, W. Dominik, Thomas Kress, Pavel Sorokin, S. Afanasiev, L. Rebane, Narumon Suwonjandee, Christopher Bruner, Xin Shi, Piero Giubilato, Silvio Donato, R. Wilkinson, Ezio Torassa, Vadim Oreshkin, Harry Cheung, Charles C. Richardson, Arun Kumar, Daniele Spiga, Paul Dauncey, Damir Lelas, Rachel Yohay, Amitabh Lath, Sergio P Ratti, Matti J Kortelainen, Benjamin Michlin, Robert Hirosky, Anita Topkar, Frank Chlebana, Volker Adler, Richard Barbieri, Piotr Traczyk, Dooyeon Gyun, Manjit Kaur, E. Daubie, Fan Yang, Elvire Bouvier, Giuseppe Iaselli, Alberto Potenza, Peter Schleper, Zhen Hu, Keith Ulmer, Zoltan Laszlo Trocsanyi, Stefan Gundacker, Peter Raics, Peicho Petkov, J. Conway, D. Del Re, Sharon Hagopian, Ralf Ulrich, Olga Driga, Juliette Alimena, B. A. Barnett, C. Martinez Rivero, Giorgio Apollinari, Ulf Behrens, Leonard Apanasevich, M. Vander Donckt, Alexey Svyatkovskiy, Francesco Fiori, Zhaoxia Meng, Chiara Mariotti, M. Correa Martins, Achille Petrilli, Chun-Hua Jiang, Tomo Umer, Philippe Busson, Jordan Tucker, Pedrame Bargassa, Vincent Lemaitre, E. A. De Wolf, K. Mishra, Metin Yalvac, Paul Baillon, Artur Apresyan, Alexander Dierlamm, Michal Szleper, Philippe Gras, David Jonathan Hofman, Alexey Vorobyev, Hyangkyu Park, Steffen Röcker, Georgi Sultanov, David Cutts, Kevin Stenson, Giovanni Organtini, Mohammed Mahmoud, Paolo Spagnolo, Andrea Castro, C. Mora Herrera, Achim Stahl, Cecilia Elena Gerber, G. P. Di Giovanni, E. J. Tonelli Manganote, Khristian Kotov, Krzysztof Piotrzkowski, Ekaterina Kuznetsova, Lloyd Stanley Durkin, P. Sharp, Daniel Noonan, Florian Zenoni, Lukas Vanelderen, Ivan-Kresimir Furic, Rishi Patel, Y. D. Oh, Yvonne Kuessel, Marc Besancon, Dinyar Rabady, Vincenzo Chiochia, Bibhuti Parida, Wolfram Dietrich Zeuner, C. Justus, B. Gomez Moreno, Sushil Chauhan, Kajari Mazumdar, C. Kottachchi Kankanamge Don, Nickolas Mccoll, Teruki Kamon, Srecko Morovic, Bruno Casal, Vincenzo Innocente, Shuai Liu, Teimuraz Lomtadze, S. Khalid, Charalambos Nicolaou, Caroline Collard, Niki Saoulidou, Sercan Sen, David Stuart, Alexey Volkov, Joseph Bochenek, Kira Burt, Georgios Anagnostou, Melody A. Swartz, Lindsey Gray, V. I. Martinez Outschoorn, Sergey Rusakov, David Futyan, Pasquale Musella, Malgorzata Kazana, Christian Barth, Daniele Fasanella, Andrea Bocci, Maxwell Chertok, Ulrich Heintz, Jean-Baptiste Sauvan, Gigi Rolandi, Danek Kotlinski, M. Chamizo Llatas, Denis Gelé, Chang-Seong Moon, Livia Soffi, Nikola Godinovic, Altan Cakir, Paolo Meridiani, Tomislav Seva, Aron Soha, M. Mohammadi Najafabadi, Olga Evdokimov, Roberto Chierici, Chia-Ming Kuo, N. Cripps, Michael Mooney, Justin Hugon, Alberto Belloni, Stefano Argiro, Candan Dozen, Alice Mignerey, Mikhail Gavrilenko, Matthew Kenzie, Michael Wayne Arenton, Thomas Peiffer, Stefano Colafranceschi, Christopher Seez, Mauro Emanuele Dinardo, Carmen Albajar, Sven Dildick, Charles Welke, Nhan Viet Tran, Christof Roland, Ada Solano, M. Bontenackels, Ioannis Papadopoulos, M. Franco Sevilla, Daniel Troendle, Panja-Riina Luukka, Roberto Salerno, R. Frühwirth, Gaetano-Marco Dallavalle, Jose F Benitez, Atanu Modak, Helena Bialkowska, Erhan Gülmez, Kaori Maeshima, Aurelijus Rinkevicius, Junghwan Goh, Livio Fanò, Lucie Gauthier, Bastian Kargoll, Peter Elmer, F. M. Stober, A. C. Le Bihan, Maciej Misiura, Hongfang Liu, Anna Teresa Meneguzzo, E. Ron, S. Semenov, Marcus Hohlmann, Alexey Ferapontov, Martin Erdmann, M. Searle, B. De La Cruz, Chayanit Asawatangtrakuldee, Yetkin Yilmaz, Carlos Florez, Yuan-Hann Chang, Geoffrey Smith, Tommaso Dorigo, Alexis Descroix, Sandra Malvezzi, M. Bansal, Muhammad Shoaib, M. Park, Pietro Faccioli, Hamit Mermerkaya, D. H. Kim, Paolo Gunnellini, Batool Safarzadeh, D. Domínguez Vázquez, Juliet Ritchie Patterson, Joao Varela, M. Centis Vignali, Emine Gurpinar, Sabino Meola, Attilio Santocchia, Jeson Jacob, Jennifer Poehlsen, Matteo Marone, Jie Zhang, Paul Kyberd, Charles Maguire, Theodoros Geralis, Andrea Rizzi, M. Chan, Amr Radi, Michal Simon, Y. Zheng, R. N.C. Gray, Lucia Masetti, Catherine Newman-Holmes, Gigi Cappello, Jiawei Fan, Andrew Gilbert, Roberto Covarelli, Olga Kodolova, Ram Krishna Dewanjee, Bora Isildak, Riccardo Travaglini, Sergio Cittolin, Armin Burgmeier, Jared Sturdy, R. Rougny, Michael Sigamani, Christoph Grab, Jean Fay, D. Lopes Pegna, Bhawna Gomber, Igor Dremin, Abideh Jafari, Nathan Mirman, James John Brooke, Marcello Mannelli, Marco Musich, Salvatore Costa, Stefka Stoykova, Indara Suarez, Yong Ban, Leander Litov, Jean-Pierre Merlo, Jennifer A. Smith, M. De Gruttola, R. Volpe, Henning Kirschenmann, Edouard Boos, Mia Tosi, S. Blyweert, W. Kiesenhofer, Giacomo Bruno, Patricia McBride, Dean Hidas, Krzysztof Doroba, Jorge Luis Rodriguez, Andrew Brinkerhoff, Sandra S. Padula, Thomas Weiler, Paolo Vitulo, William J Spalding, Sten Luyckx, Yen-Jie Lee, Doga Gulhan, Louis Lyons, Christopher Clarke, Christophe Ochando, Joram Berger, Jennifer S. Haas, A. Delgado Peris, J. St. John, Francesca Romana Cavallo, Viktor Savrin, Anna Julia Zsigmond, Daryl Hare, Joerg Behr, Thomas Ferguson, Benjamin Snook, Jose Flix, Vladimir Epshteyn, Joshua Thompson, Paul Geffert, Giovanni Petrucciani, Andreas Künsken, Laurent Thomas, Alberto Zucchetta, Jose Lazo-Flores, Dawn Leslie, Prashant Shukla, André Rosowsky, Andrew Ivanov, Ivan Reid, Anastasia Grebenyuk, Meenakshi Narain, Thomas Eichhorn, J. Marrouche, Alessandro Thea, Mikhail Dubinin, Joanne Cole, Isabel Pedraza, Jay Roberts, Eija Tuominen, Luigi Fiore, Lucia Perrini, Stefano Bianco, Cristina Ferro, Yury Ivanov, Andrea Venturi, Roberval Walsh, Burak Bilki, Wei Li, Mitchell Wayne, Karol Bunkowski, G. Hamel de Monchenault, R. Schmidt, Andris Skuja, Sébastien Brochet, Ana Yaiza Rodríguez-Marrero, Ivica Puljak, Piet Verwilligen, T. Hauth, Stefan Spanier, Andre Sznajder, Hermine Katharina Wöhri, Hans Reithler, Stephane Perries, Ben Bylsma, Carsten Heidemann, Costas Foudas, Devdatta Majumder, Vladlen Timciuc, Antony Adair, Fabrizio Gasparini, Po-Hsun Chen, Stefano Mersi, Gianluca Cerminara, Roberto Tenchini, Sunil Somalwar, Michele Selvaggi, Thomas Bergauer, Michael Planer, Gulsen Onengut, Viktor Matveev, Giovanna Selvaggi, G. Nicolas Kaufman, Gagan Bihari Mohanty, Gabor Istvan Veres, Daniela Bortoletto, Alexander Mott, Tomas Hreus, Francesco Santanastasio, S. Ochesanu, Vladimir Mossolov, Stoyan Stoynev, Tongguang Cheng, Riccardo Paramatti, Andrea Giammanco, Yuri Gershtein, Emmanuelle Perez, Mauro Donegà, Igor Bayshev, Alin Titus Serban, Yajun Mao, Mikhail Kirsanov, B. Fabbro, Tapas Sarangi, N. De Filippis, Kyong Sei Lee, Giuseppe Antonio Pierro, Evgueni Vlasov, Alexandre Léonard, Jacobo Konigsberg, Rainer Mankel, E. De La Cruz-Burelo, H. Mendez, Victor Murzin, Clemens Lange, J. E. Ramirez Vargas, Philippe Miné, David Sperka, Gaelle Boudoul, Efstathios Stiliaris, Q. Li, Tutanon Sinthuprasith, Alexis Kalogeropoulos, Mark Olschewski, Katja Klein, Didier Contardo, Sergo Jindariani, Dmitry Hits, Jorma Tuominiemi, Maria Cruz Fouz, Willi Bertl, Enrique Calvo, Cristina Riccardi, Kurtis F Johnson, Joseph Lykken, Lucas Taylor, Marco Cuffiani, P. Van Hove, Mariarosaria D'Alfonso, Mario Galanti, Greg P Heath, Sarah Catherine Eno, G. Bauer, Marissa Rodenburg, G. Broccolo, Eike Schlieckau, Zoltan Szillasi, S. Salva Diblen, Claude Nuttens, T. R. Fernandez Perez Tomei, Wei Xie, K. Petridis, Marco Meschini, Rainer Wallny, Santiago Folgueras, George Alverson, Jacopo Bernardini, Dominique Gigi, Peter Kreuzer, Raffaello D'Alessandro, Slawek Tkaczyk, Roman Kogler, Jay Hauser, A. Vilela Pereira, Andrei Starodumov, Jose M Hernandez, Guillermo Breto, Benjamin Kreis, Minkyoo Choi, D. Benedetti, Hugues Brun, Pieter Everaerts, A. Kumar, Andrei Sobol, A. De Roeck, William Ferguson, E. A. Albayrak, Alexx Perloff, Roman Ryutin, Federica Primavera, Roberto Carlin, Mark Pesaresi, Analu Custódio, Ludivine Ceard, Jessica Leonard, John Bradmiller-Feld, Rino Castaldi, Michael Brodski, Roberto Castello, W. L. Aldá, Igor Katkov, Jason Gilmore, Bryan Dahmes, Benjamin Carlson, Lesya Shchutska, Andrea Massironi, Andrew Beretvas, Otto Hindrichs, Lukas Bäni, M. Maes, T. Tabarelli de Fatis, Frederic Jean Ronga, Ivan Glushkov, H. Gamsizkan, Eric Christian Chabert, Ketino Kaadze, Magnus Hansen, Nathaniel Woods, D. Renker, Katarzyna Romanowska-Rybinska, Sean Flowers, Sandeep Bhowmik, Christian Contreras-Campana, Giorgio Maggi, Federico Nguyen, Lovedeep Kaur Saini, M. A. B. Ali, C.W. Fabjan, Markus Seidel, Joachim Mnich, R. Granier de Cassagnac, Alexey Kalinin, Maxime Gouzevitch, Richard Hall-Wilton, Elizabeth Sexton-Kennedy, Andrew Rose, T. Dorland, Oliver Buchmuller, Andreas Mussgiller, Pushpalatha C Bhat, Daniel Teyssier, Fotios Ptochos, Chris Farrell, Victor Perelygin, Alessandra Fanfani, F. Rezaei Hosseinabadi, Pierre Depasse, Vyacheslav Klyukhin, M. Van De Klundert, Andrey Uzunian, Marco Paganoni, Deok-Soo Kim, Christopher Palmer, Don Lincoln, Hafeez R Hoorani, Chris Lucas, R. Rahmat, Annika Vanhoefer, Alice Bean, Sadia Khalil, C. Fernandez Bedoya, Konstantin Androsov, Balazs Ujvari, Yuri Musienko, Ilina Vasileva Akin, Tai Sakuma, Aaron Levine, Francesco Navarria, J. P. Gomez, Matthias Wolf, Paolo Ronchese, Teresa Rodrigo, Sridhara Dasu, Emilio Meschi, Amithabh Shrinivas, Christoph Schäfer, Vineet Kumar, Dustin Stolp, Kurt Jung, Aytul Adiguzel, Gui Nyun Kim, V. Kozhuharov, Ying Lu, Sanjay Kumar Swain, Riccardo Bellan, Michael Gardner, Joseph Goodell, Andrew Askew, Gurpreet Singh, Marc M Baarmand, J. Alcaraz Maestre, W. Zou, Ivan Amos Cali, Suresh C Tonwar, Daniele Trocino, Silvia Maselli, Daniel John Karmgard, Manfred Jeitler, David Sabes, Ali Fahim, Demetrios Loukas, Jan Kieseler, Mikhail Makouski, Laurent Forthomme, Jordan Nash, Sung Keun Park, Norbert Neumeister, J. M. Vizan Garcia, Bugra Bilin, Yutaro Iiyama, Intae Yu, Stefan Grünendahl, Pierre Piroué, Raman Khurana, V. Re, André Holzner, Andrey Popov, Werner Sun, Joschka Lingemann, Lawrence Sulak, James Alexander, Philip Hebda, Ilya Osipenkov, Denis Favart, M. Pimiä, Sam Harper, Christopher George Tully, A. Kayis Topaksu, Sylvie Braibant-Giacomelli, Ian Macneill, M. Calderon De La Barca Sanchez, Claudio Grandi, M. Olmedo Negrete, Lukasz Kreczko, Andrzej Zuranski, K. Krajczar, L. J. Gutay, David Curry, Karl Gill, Stephen Sanders, Wesley H Smith, Shervin Nourbakhsh, A. De Cosa, Hannes Sakulin, S. Costantini, Fabrizio Palla, Andrew Melo, Amedeo Staiano, Emmanuel Olaiya, Alexander Schmidt, Nadir Daci, Alexandros Attikis, A. York, Anna Elliott-Peisert, Vuko Brigljevic, A. D.R. Vargas Trevino, Marion Murumaa, F. Simonetto, Yueh-Feng Liu, Peter Thomassen, Maxim Perfilov, Mauro Menichelli, Alexander Belyaev, Claudio Campagnari, Donald Belknap, Teppo Mäenpää, Winston Ko, Wolfgang Adam, Bradley Cox, Dennis Klingebiel, Sébastien Gadrat, Mayda Velasco, Filip Thyssen, P. Squillacioti, M. Segala, P. Lobelle Pardo, Andreas Kornmayer, Bruno Wittmer, J. D. Ruiz Alvarez, David Taylor, A. Baden, James Faulkner, Aran Garcia-Bellido, Steve Schnetzer, Klaas Padeken, Gino Bolla, A. Escalante Del Valle, Byung-Sik Hong, Renato Campanini, Andrea Schizzi, Valery Zhukov, Stefano Casasso, S. Fonseca De Souza, P. Martinez Ruiz del Arbol, Kati Lassila-Perini, Renato Potenza, Petra Merkel, Pelin Kurt, Si Xie, Robert Stone, Tilman Rohe, Phillip Russell Dudero, Philipp Eller, Frank Meier, Jing Wang, Sho Maruyama, Lorenzo Foà, Wolfgang Lohmann, Christopher Neu, Lev Uvarov, Rajdeep Mohan Chatterjee, Debarati Roy, W. Haj Ahmad, Franco Ligabue, Rylan Conway, Robert Schöfbeck, Mohsen Khakzad, Philip Baringer, Enrico Robutti, George Stephans, Joonas Talvitie, Roberto Dell'Orso, Yusuf Erdogan, I. Gonzalez Caballero, Laura Dodd, Michael Hildreth, Shuichi Kunori, Paolo Azzurri, Luca Perniè, Roland Horisberger, Yuan Chao, Alexander Spiridonov, Francesca Nessi-Tedaldi, Georgios Mavromanolakis, Michele Arneodo, L. F. Chaparro Sierra, Colin Bernet, Min Suk Kim, Nadia Pastrone, Roy Montalvo, Andrew Levin, A. Hunt, L. Muniz, Carlos Lourenco, Philip Harris, Sergey Troshin, Pietro Vischia, D. Winn, David D'Enterria, Alessandro Degano, Benjamin Henry Hooberman, Marc Dünser, W. To, Filip Moortgat, Konstantinos Kousouris, Guenter Eckerlin, Annik Olbrechts, Armen Tumasyan, Paul Edmund Karchin, Christopher Rogan, Ron Lipton, Joshua Bendavid, Marcos Cerrada, Avishek Chatterjee, Andrea Carlo Marini, Alexander Tapper, L. Wendland, Joao Seixas, Francisco Matorras, Matthias Ulrich Mozer, Massimiliano Chiorboli, Rosamaria Venditti, Stilianos Kesisoglou, A. Morelos Pineda, Paula Eerola, Manoj Sharan, Jessica Brinson, Olga Novgorodova, Alexander Malakhov, Efe Yazgan, A. Polatoz, Günter Flügge, G. Christopher, Rakesh Kumar, Nicolas Zaganidis, Martti Raidal, Duncan Ralph, Yang Yang, Nicanor Colino, Matthew Jones, Alexei Raspereza, O. Gonzalez Lopez, Adrian Perieanu, Robert Clare, Patrizia Azzi, Vyacheslav Krutelyov, Suvadeep Bose, Helio Nogima, D. Matos Figueiredo, Noemi Beni, S. Reucroft, M. Della Negra, Günther Dissertori, Yi Chen, Antonio Rossi, E. Casimiro Linares, Vladimir Andreev, Pete Markowitz, Akram Khan, A. Pérez-Calero Yzquierdo, Teresa Lenz, János Karancsi, Emmanuel Contreras-Campana, Pamela Klabbers, Taimoor Khurshid, A. Meyer, Russell Richard Betts, Jean-Louis Faure, Philipp Millet, Conor Henderson, M. N. Bakirci, John A Coughlan, Domenico Giordano, Brian Francis, Caterina Vernieri, A. Ellithi Kamel, Luca Perrozzi, Manfred Krammer, Kevin Sung, Matthew Fisher, D. Polic, Maria Isabel Josa, Nicolas Chanon, Andrei Gritsan, Philip Symonds, Helena Malbouisson, Alex J. Barker, M. Kress, Camelia Mironov, Aruna Nayak, Alexis Fagot, Michael Plagge, J. Anderson, Gervasio Gomez, Dario Menasce, Kevin Klapoetke, Bożena Boimska, Thomas Hebbeker, Paul Lecoq, M. Dordevic, Florent Lacroix, Konstanty Sumorok, Semiray Girgis, Kerem Cankocak, Alessandro Gaz, A. Lopez Virto, Harrison Prosper, F. Duru, Stephen Robert Wagner, Sanghyeon Song, Evangelos Paradas, Dean Horton, Kevin Burkett, Simranjit Singh Chhibra, Eric Conte, David Barney, Burin Asavapibhop, Aram Avetisyan, Lalit Mohan Pant, J. S. Keller, Salvatore Nuzzo, E. Brownson, Ian Michael Nugent, Albert M. Sirunyan, A. Harel, S. Bilmis, Philippe Bloch, Paolo Checchia, C. De Oliveira Martins, Victor Golovtsov, Sh. Jain, Robert Fischer, Lorenzo Bianchini, Alberto Orso Maria Iorio, Alberto Messineo, Daniel Robert Marlow, Laurent Mirabito, C. Beirão Da Cruz E Silva, Steven Lowette, Pawandeep Jandir, Stephanie Beauceron, Vardan Khachatryan, Martin Bodlak, Mark Raymond Adams, Ulrich Husemann, Archana Sharma, Dae Jung Kong, Valentina Sola, Konstantin Matchev, Jean-Marie Brom, Ilknur Hos, J. N. Butler, Edmund Berry, Fabian Stockli, Sunil Dogra, I. Marfin, Yves Sirois, A. Singovsky, Dezso Horvath, M. Bergholz, Shashikant Dugad, Aaron Dominguez, Abdollah Mohammadi, W. Martin, Paolo Lariccia, Saptaparna Bhattacharya, B. 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Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Journal of High Energy Physics
Popis: A search is presented for standard model (SM) production of four top quarks t t ¯ t t ¯ $$ \left(t\overline{t}t\overline{t}\right) $$ in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb −1 recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM t t ¯ t t ¯ $$ t\overline{t}t\overline{t} $$ production is σ t t ¯ t t ¯ S M ≈ 1 f b $$ {\sigma}_{t\overline{t}t\overline{t}}^{\mathrm{SM}}\approx 1\;\mathrm{f}\mathrm{b} $$ . A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 ± 17 fb is expected.
Databáze: OpenAIRE