| Autor: |
Carlo Battilana, Viacheslav Bunichev, Mikko Voutilainen, Stefaan Tavernier, Daniel Claes, Miguel Vidal Marono, Gabriella Pugliese, Altan Cakir, Mate Csanad, Kenneth Bloom, Pietro Govoni, Gervasio Gomez, Arie Bodek, Edmilson Manganote, Chang-Seong Moon, Ahmed Ali Abdelalim, Guenakh Mitselmakher, Lesya Shchutska, Colin Bernet, Devdatta Majumder, Kun Shi, Caglar Zorbilmez, Lorenzo Viliani, İSA DUMANOGLU, Giuseppe Latino, Krzysztof Doroba, Erhan Gülmez, Yıldıray Kömürcü, Giovanni Abbiendi, Fabrizio Palla, Kevin Pedro, Valentina Sola, Matthias Schröder, Cristina Riccardi, Johan Borg, Natalia Lychkovskaya, Manas Maity, Sami Lehti, Badder Marzocchi, Fred Stober, Jan Krolikowski, Begona De la Cruz, Jan Steggemann, Samet Lezki, Stefano Belforte, Nazar Bartosik, Raghav Kunnawalkam Elayavalli, Márton Bartók, Daniele Fasanella, Erika Garutti, Suat Ozkorucuklu, Ijaz Ahmed, Shalini Thakur, Ramandeep Kumar, Nadia Pastrone, Muhammad Ahmad, Konstantin Androsov, Toni Sculac, Francesco Santanastasio, Stathes Paganis, Arun Kumar, Aysel Kayis Topaksu, Artur Kalinowski, Luisa Fernanda Chaparro Sierra, Giuseppe Della Ricca, Eduard De La Cruz Burelo, Lucia Silvestris, Christian Scharf, Joern Schwandt, Christopher Tully, Luigi Calligaris, Shimaa AbuZeid, Diego Ciangottini, Francisco Javier Cuevas Maestro, Sunil Bansal, Alexander Belyaev, James Buchanan, Roman Kogler, Andrea Giammanco, Marco Toliman Lucchini, Guenther Dissertori, Wei Shi, Daniele Spiga, Claudia-Elisabeth Wulz, Francesca Cavallari, Paolo Maria Montagna, José María Hernández Calama, Efe Yazgan, Nils Faltermann, Yuri Gershtein, Tomas Lindén, Halil Saka, Florencia Canelli, Simone Pigazzini, Armando Bermudez Martinez, Nicolò Trevisani, Giacomo Fedi, Elisabetta Gallo, Tapio Lampén, Dermot Moran, Gustavo Gil Da Silveira, Leonid Levchuk, Claudio Grandi, Ashim Roy, Alessandro Di Mattia, Marco Zanetti, Diego Figueiredo, Sertac Ozturk, Volodymyr Myronenko, John Conway, Michał Szleper, Viesturs Veckalns, Paolo Giacomelli, Jay R. Dittmann, Yalcin Guler, Marcin Konecki, Franco Ligabue, Alexander Grohsjean, Silvano Tosi, Martina Malberti, Merve Ince Lezki, Nicolò Tosi, James Wetzel, Jochen Schieck, Leonardo Cristella, Ernesto Migliore, Peicho Petkov, Silvia Goy Lopez, Nikolaos Manthos, Białkowska Helena, Lisa Benato, Salvatore Buontempo, Émilien Chapon, Stéphane PERRIES, JUAN ALCARAZ MAESTRE, Antonio Vilela Pereira, Thong Q. Nguyen, Maria Clemencia Mora Herrera, Ilaria Vai, Gilvan Alves, Cristina Fernández Bedoya, Raffaello D'Alessandro, Nabin Poudyal, Andre Sznajder, André Rosowsky, Sergei Shmatov, Kenyi Hurtado Anampa, Michael Wang, Peter Hobson, Francesco Fallavollita, Rebeca Gonzalez Suarez, Jose Ruiz, Mario Pelliccioni, Alexei Safonov, WILLIAM FORD, Junghwan Goh, German Ruben Martinez, Ewerton Belchior, Rocky Garg, Stephen Mrenna, Panja Luukka, Caterina Vernieri, Rogelio Reyes-Almanza, Fonseca de Souza Sandro, Mohd Adli MD Ali, Karl Ehatäht, Frank Geurts, Isabel Josa Mutuberria, David D'Enterria, Sergey Polikarpov, Sandeep Sharma, Francesco Fienga, Jay Lawhorn, Arabella Martelli, Robert Cousins, Iban Cabrillo, Ezio Torassa, Eric CONTE, Santeri Laurila, Jorma Tuominiemi, Andrey Popov, Stefano Ragazzi, Jehad Mousa, Martin Grunewald, Paolo Spagnolo, Robert Klanner, Isidro González Caballero, Crisostomo Sciacca, Seon-Hee Seo, Oscar Gonzalez Lopez, Hengne Li, Francisco Yumiceva, Robert Bainbridge, Elizabeth Starling, Andrea Rizzi, Javier Alberto Murillo Quijada, Florent Lacroix, Todd Adams, Francesco Fiori, Ioannis Papadopoulos, Greg Landsberg, Sara Fiorendi, Arsen Khvedelidze, Jennifer Ngadiuba, Tamas Almos Vami, Ivan Heredia de la Cruz, Andrea Venturi, Cameron Bravo, Paolo Vitulo, Pablo Martinez Ruiz del Arbol, Mohsen Khakzad, Ulascan Sarica, Reddy Pratap Gandrajula, Luca Malgeri, Andrew Brinkerhoff, Peter Elmer, Igor Lokhtin, Andrea Gozzelino, Anton Stepennov, Arnd Meyer, Adel Terkulov, Tatyana Dimova, Seth Zenz, Giuliana Galati, Alberto Ruiz Jimeno, Michele Gallinaro, Daniele Pedrini, Johannes Lange, Peter Wittich, Maria Cruz Fouz Iglesias, Patrizia Barria, Korbinian Schweiger, Gaetano Marco Dallavalle, Pietro Faccioli, Michail Bachtis, Jaana Heikkilä, Arne Christoph Reimers, Catherine Mackay, Hallie Trauger, Michele Arneodo, José Flix Molina, Alexander Tapper, Maciej Gorski, George Alverson, Lev Dudko, Raffaella Radogna, Juan Pablo Fernández Ramos, Yacine Haddad, Felice Pantaleo, Paolo Meridiani, Ignacio Redondo, Edgar Carrera Jarrin, Marco Monteno, Gautier Hamel de Monchenault, Salvatore Rappoccio, Roberta Arcidiacono, Bora Akgun, Thomas Reis, Anna Colaleo, Marco CUFFIANI, Mateo Ramírez García, David Vannerom, Diego Alejandro Sanz-Becerra, Varun Sharma, Gabriella Pásztor, Joel Goldstein, Paolo Azzurri, Piotr Zalewski, Elsayed Salama, Sergio Lo Meo, Cristina TUVE', Carlos Arturo Ávila Bernal, Benedikt Vormwald, Davide Zuolo, Ram Krishna Sharma, Javier Mauricio Duarte, Petr Mandrik, Andreas Hinzmann, Brent Yates, Nikkie Deelen, Matthias Kasemann, Manfred Paulini, Kevin Lannon, Mithat Kaya, David Krofcheck, Michael Tytgat, Claudia Cecchi, Nuno Leonardo, Jesus Marco de Lucas, Maxim Titov, Krzysztof Piotrzkowski, Rainer Wallny, Ayman Ahmad Al-bataineh, Pietro Vischia, Thea Aarrestad, Irene Bachiller, Pieter David, Maria Isabel Pedraza Morales, Tae Jeong Kim, Shabnam Jabeen, Guido Emilio Tonelli, Davide Di Croce, J.F. Benitez, Luiz Mundim, Jason Lee, Jorgen D'Hondt, Maria Cepeda, Salvatore My, Siew Yan Hoh, Silvio Donato, Deborah Pinna, Mehmet Oglakci, Soureek Mitra, Sergio Novaes, Antonio Delgado Peris, Jeffrey Roskes, Hannu Siikonen, André David Tinoco Mendes, Anirban Saha, Edy Ayala, Shubhanshu Chauhan, Simone Gennai, Luca Brianza, Freya Blekman, Sercan Sen, Umberto Dosselli, Raffaele Gerosa, Geoffrey Hall, Eija Tuominen, Vincenzo Monaco, Marco Paganoni, Marta Felcini, Andrei Gritsan, Bugra Bilin, Marko Dragicevic, Cristóvão Da Cruz e Silva, Mikhail Danilov, Martin Erdmann, Antonio Perez-Calero Yzquierdo, Nadezda Chernyavskaya, Viola Sordini, Mykhailo Dalchenko, Michal Bluj, Joona Juhani Havukainen, Francesco Luigi Navarria, Ibrahim Soner Zorbakir, Roberto Covarelli, KEREM CANKOÇAK, Christophorus Grab, Mojtaba Mohammadi Najafabadi, Henning Flaecher, Rui Xiao, Vyacheslav Klyukhin, FERHAT OZOK, Natalia Korneeva, Jordi Duarte-Campderrós, Ilse Krätschmer, Alberto Sanchez-Hernandez, Luca Scodellaro, Marino Missiroli, Fotios Ptochos, Helen Heath, Zuhal Seyma Demiroglu, Henning Kirschenmann, Camilo Carrillo Montoya, Alberto Zucchetta, Ralf Ulrich, Guillelmo Gomez-Ceballos, Kadri Ozdemir, Patrizia Azzi, Vladimir Gavrilov, Konstantinos Theofilatos, Andrea Davide Benaglia, Vito Palladino, Jesus Puerta Pelayo, Prafulla Kumar Behera, Sudarshan Paramesvaran, Aaron Dominguez, Harrison Bertrand Prosper, Livio Fano', Mariana Shopova, Lisa Borgonovi, Mauro Donega, Federico De Guio, Aashaq Shah, Oliver Gutsche, Ali Celik, Claudio Caputo, Nicola Amapane, Mauro Emanuele Dinardo, EMINE GÜRPINAR GÜLER, PAO-TI CHANG, Amedeo Staiano, Marta Verweij, Sudhir Malik, Clemens Lange, Alexander Barnyakov, Raul Iraq Rabadan Trejo, Bożena Boimska, Giacomo Sguazzoni |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters. 121 |
| ISSN: |
1079-7114
0031-9007 |
| Popis: |
The first evidence of events consistent with the production of a single top quark in association with a photon is reported. The analysis is based on proton-proton collisions at root s = 13 TeV and recorded by the CMS experiment in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). Events are selected by requiring the presence of a muon (mu), a photon (gamma), an imbalance in transverse momentum from an undetected neutrino (nu), and at least two jets (j) of which exactly one is identified as associated with the hadronization of a b quark. A multivariate discriminant based on topological and kinematic event properties is employed to separate signal from background processes. An excess above the backgroundonly hypothesis is observed, with a significance of 4.4 standard deviations. A fiducial cross section is measured for isolated photons with transverse momentum greater than 25 GeV in the central region of the detector. The measured product of the cross section and branching fraction is sigma(pp -> t gamma j) B (t -> mu nu b) = 115 +/- 17 (stat) +/- 30(syst) fb, which is consistent with the standard model prediction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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