Underlying event measurements in pp collisions at √s = 0:9 and 7 TeV with the ALICE experiment at the LHC

B. Abelev, A. Abrahantes Quintana, D. Adamová, A. M. Adare, M. M. Aggarwal, Gianluca Aglieri Rinella, A. G. Agocs, A. Agostinelli, S. Aguilar Salazar, Z. Ahammed, N. Ahmad, A. Ahmad, S. U. Ahn, A. Akindinov, D. Aleksandrov, B. Alessandro, Jose Ruben Alfaro Molina, A. Alici, A. Alkin, E. Almaráz AviñaT. Alt, V. Altini, S. Altinpinar, I. Altsybeev, C. Andrei, A. Andronic, V. Anguelov, C. Anson, Tome Antičić, F. Antinori, P. Antonioli, L. Aphecetche, H. Appelshäuser, N. Arbor, S. Arcelli, A. Arend, N. Armesto, R. Arnaldi, T. Aronsson, I. C. Arsene, M. Arslandok, A. Asryan, A. Augustinus, R. Averbeck, T. C. Awes, J. Äystö, Mohd Danish Azmi, M. Bach, A. Badalà, Y. W. Baek, R. Bailhache, R. Bala, Rinaldo Baldini Ferroli, A. Baldisseri, A. Baldit, F. Baltasar Dos Santos Pedrosa, J. Bán, R. C. Baral, R. Barbera, F. Barile, G. G. Barnaföldi, L. S. Barnby, V. Barret, J. Bartke, M. Basile, N. Bastid, B. Bathen, G. Batigne, B. Batyunya, C. Baumann, I. G. Bearden, H. Beck, I. Belikov, F. Bellini, R. Bellwied, E. Belmont-Moreno, S. Beole, I. Berceanu, A. Bercuci, Y. Berdnikov, D. Berenyi, C. Bergmann, D. Berzano, L. Betev, A. Bhasin, A. K. Bhati, N. Bianchi, L. Bianchi, C. Bianchin, J. Bielčík, J. Bielčíková, A. Bilandzic, F. Blanco, F. Blanco, Dmitry Blau, C. Blume, M. Boccioli, N. Bock, A. Bogdanov, H. Bøggild, Mikhail Bogolyubsky, Laszlo Boldizsar, Marek Bombara, Julian Book, Herve Borel, Alexander Borissov, Claudio Bortolin, Suvendu Nath Bose, Francesco Bossu, Michiel Botje, Stefan Bottger, Bruno Alexandre Boyer, Peter Braun-Munzinger, Marco Bregant, Timo Gunther Breitner, Michal Broz, Rene Brun, Elena Bruna, Giuseppe Eugenio Bruno, Dmitry Budnikov, Henner Buesching, Stefania Bufalino, Kyrylo Bugaiev, Oliver Busch, Edith Zinhle Buthelezi, Davide Caffarri, Xu Cai, Helen Louise Caines, Ernesto Calvo Villar, Paolo Camerini, Veronica Canoa Roman, Giovanni Cara Romeo, Francesco Carena, Wisla Carena, Nelson Carlin Filho, Federico Carminati, Camilo Andres Carrillo Montoya, Amaya Ofelia Casanova Diaz, Michele Caselle, Javier Ernesto Castillo Castellanos, Juan Francisco Castillo Hernandez, Ester Anna Rita Casula, Vasile Catanescu, Costanza Cavicchioli, Jan Cepila, Piergiorgio Cerello, Beomsu Chang, Sylvain Chapeland, Jean Luc Fernand Charvet, Sukalyan Chattopadhyay, Subhasis Chattopadhyay, Michael Gerard Cherney, Cvetan Cheshkov, Brigitte Cheynis, Emilio Chiavassa, Vasco Miguel Chibante Barroso, David Chinellato, Peter Chochula, Marek Chojnacki, Panagiotis Christakoglou, Christian Holm Christensen, Peter Christiansen, Tatsuya Chujo, Suh Urk Chung, Corrado Cicalo, Luisa Cifarelli, Federico Cindolo, Jean Willy Andre Cleymans, Fabrizio Coccetti, Jean Pierre Michel Coffin, Fabio Colamaria, Domenico Colella, Gustavo Conesa Balbastre, Zaida Conesa Del Valle, Paul Constantin, Giacomo Contin, Jesus Guillermo Contreras, Thomas Michael Cormier, Yasser Corrales Morales, Pietro Cortese, Ismael Cortes Maldonado, Mauro Rogerio Cosentino, Filippo Costa, Manuel Enrique Cotallo, Elisabetta Crescio, Philippe Crochet, Emilia Cruz Alaniz, Eleazar Cuautle, Leticia Cunqueiro, Andrea Dainese, Hans Hjersing Dalsgaard, Andrea Danu, Indranil Das, Kushal Das, Debasish Das, Ajay Kumar Dash, Sadhana Dash, Sudipan De, Andrea De Azevedo Moregula, Gabriel De Barros, Annalisa De Caro, Giacinto De Cataldo, Jan De Cuveland, Alessandro De Falco, Daniele De Gruttola, Hugues Delagrange, Eduardo Del Castillo Sanchez, Andrzej Deloff, Vyacheslav Demanov, Nora De Marco, Ervin Denes, Salvatore De Pasquale, Airton Deppman, Ginevra D'Erasmo, Raoul Stefan De Rooij, Domenico Di Bari, Thomas Dietel, Carmelo Di Giglio, Sergio Di Liberto, Antonio Di Mauro, Pasquale Di Nezza, Roberto Divia, Oeystein Djuvsland, Alexandru Florin Dobrin, Tadeusz Antoni Dobrowolski, Isabel Dominguez, Benjamin Donigus, Olja Dordic, Olga Driga, Anand Kumar Dubey, Laurent Ducroux, Pascal Dupieux, Mihir Ranjan Dutta Majumdar, A. 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Dutta Majumdar, Domenico Elia, David Philip Emschermann, Heiko Engel, Hege Austrheim Erdal, Bruno Espagnon, Magali Danielle Estienne, Shinichi Esumi, David Evans, Gyulnara Eyyubova, Daniela Fabris, Julien Faivre, Davide Falchieri, Alessandra Fantoni, Markus Fasel, Roger Worsley Fearick, Anatoly Fedunov, Dominik Fehlker, Linus Feldkamp, Daniel Felea, Grigory Feofilov, Arturo Fernandez Tellez, Alessandro Ferretti, Roberta Ferretti, Jan Figiel, Marcel Figueredo, Sergey Filchagin, Rosa Anna Fini, Dmitry Finogeev, Fiorella Fionda, Enrichetta Maria Fiore, Michele Floris, Siegfried Valentin Foertsch, Panagiota Foka, Sergey Fokin, Enrico Fragiacomo, Michail Fragkiadakis, Ulrich Michael Frankenfeld, Ulrich Fuchs, Christophe Furget, Mario Fusco Girard, Jens Joergen Gaardhoje, Martino Gagliardi, Alberto Gago, Mauro Gallio, Dhevan Raja Gangadharan, Paraskevi Ganoti, Jose Garabatos, Edmundo Garcia-Solis, Irakli Garishvili, Jochen Gerhard, Marie Germain, Claudio Geuna, Andrei George Gheata, Mihaela Gheata, Bruno Ghidini, Premomoy Ghosh, Paola Gianotti, Martin Robert Girard, Paolo Giubellino, Ewa Gladysz-Dziadus, Peter Glassel, Ramon Gomez, Elena Gonzalez Ferreiro, Laura Helena Gonzalez-Trueba, Pedro Gonzalez-Zamora, Sergey Gorbunov, Ankita Goswami, Sven Gotovac, Varlen Grabski, Lukasz Kamil Graczykowski, Robert Grajcarek, Alessandro Grelli, Costin Grigoras, Alina Gabriela Grigoras, Vladislav Grigoriev, Ara Grigoryan, Smbat Grigoryan, Boris Grinyov, Nevio Grion, Philippe Gros, Jan Fiete Grosse-Oetringhaus, Jean Yves Grossiord, Raffaele Grosso, Fedor Guber, Rachid Guernane, Cesar Guerra Gutierrez, Barbara Guerzoni, Maxime Rene Joseph Guilbaud, Kristjan Herlache Gulbrandsen, Taku Gunji, Anik Gupta, Ramni Gupta, Hans Gutbrod, Oystein Senneset Haaland, Cynthia Marie Hadjidakis, Maria Haiduc, Hideki Hamagaki, Gergoe Hamar, Byounghee Han, Luke David Hanratty, Alexander Hansen, Zuzana Harmanova, John William Harris, Matthias Hartig, Dumitru Hasegan, Despoina Hatzifotiadou, Arsen Hayrapetyan, Stefan Thomas Heckel, Markus Ansgar Heide, Haavard Helstrup, Andrei Ionut Herghelegiu, Gerardo Antonio Herrera Corral, Norbert Herrmann, Kristin Fanebust Hetland, Bernard Hicks, Per Thomas Hille, Boris Hippolyte, Takuma Horaguchi, Yasuto Hori, Peter Zahariev Hristov, Ivana Hrivnacova, Meidana Huang, Sebastian Bernd Huber, Thomas Humanic, Dae Sung Hwang, Raphaelle Ichou, Radiy Ilkaev, Iryna Ilkiv, Motoi Inaba, Elisa Incani, Pier Giorgio Innocenti, Gian Michele Innocenti, Mikhail Ippolitov, Muhammad Irfan, Cristian George Ivan, Marian Ivanov, Vladimir Ivanov, Andrey Ivanov, Oleksii Ivanytskyi, Adam Wlodzimierz Jacholkowski, Peter Jacobs, Lucia Jancurova, Haeng Jin Jang, Swensy Gwladys Jangal, Rudolf Janik, Malgorzata Anna Janik, Sandun Jayarathna, Satyajit Jena, Raul Tonatiuh Jimenez Bustamante, Lennart Jirden, Peter Graham Jones, Won Woong Jung, Hyung Taik Jung, Anton Jusko, Alexei Kaidalov, Vanik Kakoyan, Sebastian Kalcher, Peter Kalinak, Matus Kalisky, Tuomo Esa Aukusti Kalliokoski, Alexander Philipp Kalweit, Kalliopi Kanaki, Ju Hwan Kang, Vladimir Kaplin, Ayben Karasu Uysal, Oleg Karavichev, Tatiana Karavicheva, Evgeny Karpechev, Andrey Kazantsev, Udo Wolfgang Kebschull, Ralf Keidel, Palash Khan, Mohisin Mohammed Khan, Shuaib Ahmad Khan, Alexei Khanzadeev, Yury Kharlov, Bjarte Kileng, Jonghyun Kim, Dong Jo Kim, Do Won Kim, Jin Sook Kim, Minwoo Kim, Seon Hee Kim, Se Yong Kim, Beomkyu Kim, Taesoo Kim, Stefan Kirsch, Ivan Kisel, Sergey Kiselev, Adam Ryszard Kisiel, Jennifer Lynn Klay, Jochen Klein, Christian Klein-Bosing, Michael Kliemant, Alexander Kluge, Michael Linus Knichel, Kathrin Koch, Markus Kohler, Anatoly Kolojvari, Valery Kondratiev, Natalia Kondratyeva, Artem Konevskih, Andrey Korneev, Chamath Kottachchi Kankanamge Don, Ravjeet Kour, Marek Kowalski, Serge Kox, Greeshma Koyithatta Meethaleveedu, Jiri Kral, Ivan Kralik, Frederick Kramer, Ingrid Christine Kraus, Tobias Krawutschke, Matthias Kretz, Marian Krivda, Filip Krizek, Miroslav Krus, Evgeny Kryshen, Mikolaj Krzewicki, Yury Kucheriaev, Christian Claude Kuhn, Paul Kuijer, Podist Kurashvili, A. B. Kurepin, A. Kurepin, Alexey Kuryakin, Svetlana Kushpil, Vasily Kushpil, Henning Kvaerno, Min Jung Kweon, Youngil Kwon, Pedro Ladron De Guevara, Igor Lakomov, Rune Langoy, Camilo Ernesto Lara, Antoine Xavier Lardeux, Paola La Rocca, Cristina Lazzeroni, Ramona Lea, Yves Le Bornec, Sung Chul Lee, Ki Sang Lee, Frederic Lefevre, Joerg Walter Lehnert, Lars Leistam, Matthieu Laurent Lenhardt, Vito Lenti, Hermes Leon, Ildefonso Leon Monzon, Hermes Leon Vargas, Peter Levai, Xiaomei Li, Jorgen Lien, Roman Lietava, Svein Lindal, Volker Lindenstruth, Christian Lippmann, Michael Annan Lisa, Lijiao Liu, Per Ivar Loenne, Vera Loggins, Vitaly Loginov, Stefan Bernhard Lohn, Daniel Lohner, Constantinos Loizides, Kai Krister Loo, Xavier Bernard Lopez, Ernesto Lopez Torres, Gunnar Lovhoiden, Xianguo Lu, Philipp Luettig, Marcello Lunardon, Jiebin Luo, Grazia Luparello, Lionel Luquin, Cinzia Luzzi, Rongrong Ma, Ke Ma, Dilan Minthaka Madagodahettige-Don, Alla Maevskaya, Magnus Mager, Durga Prasad Mahapatra, Antonin Maire, Mikhail Malaev, Ivonne Alicia Maldonado Cervantes, Ludmila Malinina, Dmitry Mal'kevich, Peter Malzacher, Alexander Mamonov, Loic Henri Antoine Manceau, Lalit Kumar Mangotra, Vladislav Manko, Franck Manso, Vito Manzari, Yaxian Mao, Massimiliano Marchisone, Jiri Mares, Giacomo Vito Margagliotti, Anselmo Margotti, Ana Maria Marin, Christina Markert, Irakli Martashvili, Paolo Martinengo, Mario Ivan Martinez, Arnulfo Martinez Davalos, Gines Martinez Garcia, Yevgen Martynov, Alexis Jean Michel Mas, Silvia Masciocchi, Massimo Masera, Alberto Masoni, Laure Marie Massacrier, Mario Mastromarco, Annalisa Mastroserio, Zoe Louise Matthews, Adam Tomasz Matyja, Daniel Mayani, Christoph Mayer, Joel Mazer, Alessandra Maria Mazzoni, Franco Meddi, Arturo Alejandro Menchaca-Rocha, Jorge Mercado Perez, Michal Meres, Yasuo Miake, Alain Michalon, Jumpei Midori, Leonardo Milano, Jovan Milosevic, Andre Mischke, Aditya Nath Mishra, Dariusz Miskowiec, Ciprian Mihai Mitu, Jocelyn Mlynarz, Ajit Kumar Mohanty, Bedangadas Mohanty, Levente Molnar, Luis Manuel Montano Zetina, Marco Monteno, Esther Montes, Taebong Moon, Maurizio Morando, Denise Aparecida Moreira De Godoy, Sandra Moretto, Andreas Morsch, Valeria Muccifora, Eugen Mudnic, Sanjib Muhuri, Hans Muller, Marcelo Munhoz, Luciano Musa, Alfredo Musso, Basanta Kumar Nandi, Rosario Nania, Eugenio Nappi, Christine Nattrass, Nikolay Naumov, Sparsh Navin, Tapan Kumar Nayak, Sergey Nazarenko, Gleb Nazarov, Alexander Nedosekin, Maria Nicassio, Borge Svane Nielsen, Takafumi Niida, Sergey Nikolaev, Vedran Nikolic, Vladimir Nikulin, Sergey Nikulin, Bjorn Steven Nilsen, Mads Stormo Nilsson, Francesco Noferini, Petr Nomokonov, Gerardus Nooren, Norbert Novitzky, Alexandre Nyanin, Anitha Nyatha, Casper Nygaard, Joakim Ingemar Nystrand, Hideyuki Obayashi, Alexander Ochirov, Helmut Oskar Oeschler, Sun Kun Oh, Saehanseul Oh, Janusz Oleniacz, Chiara Oppedisano, Antonio Ortiz Velasquez, Giacomo Ortona, Anders Nils Erik Oskarsson, Piotr Krystian Ostrowski, Ingvar Otterlund, Jacek Tomasz Otwinowski, Ken Oyama, Kyoichiro Ozawa, Yvonne Chiara Pachmayer, Milos Pachr, Fatima Padilla, Paola Pagano, Guy Paic, Florian Painke, Carlos Pajares, S. Pal, Susanta Kumar Pal, Arvinder Singh Palaha, Armando Palmeri, Vardanush Papikyan, Giuseppe Pappalardo, Woo Jin Park, Annika Passfeld, Blahoslav Pastircak, Dmitri Ivanovich Patalakha, Vincenzo Paticchio, Alexei Pavlinov, Tomasz Jan Pawlak, Thomas Peitzmann, Marianela Perales, Elienos Pereira De Oliveira Filho, Dmitri Peresunko, Carlos Eugenio Perez Lara, Edgar Perez Lezama, Diego Perini, Davide Perrino, Wiktor Stanislaw Peryt, Alessandro Pesci, Vladimir Peskov, Yury Pestov, Vojtech Petracek, Michal Petran, Mariana Petris, Plamen Rumenov Petrov, Mihai Petrovici, Catia Petta, Stefano Piano, Anna Piccotti, Miroslav Pikna, Philippe Pillot, Ombretta Pinazza, Lawrence Pinsky, Nora Pitz, Francois Piuz, Danthasinghe Piyarathna, Mateusz Andrzej Ploskon, Jan Marian Pluta, Timur Pocheptsov, Sona Pochybova, Pedro Luis Manuel Podesta Lerma, Martin Poghosyan, Karel Polak, Boris Polichtchouk, Amalia Pop, Sarah Porteboeuf-Houssais, Vladimir Pospisil, Baba Potukuchi, Sidharth Kumar Prasad, Roberto 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Christos Tagridis, Jun Takahashi, Daniel Jesus Tapia Takaki, Arturo Tauro, Guillermo Tejeda Munoz, Adriana Telesca, Cristina Terrevoli, Jochen Mathias Thader, Jim Thomas, Deepa Thomas, Raphael Noel Tieulent, Anthony Timmins, David Tlusty, Alberica Toia, Hisayuki Torii, Luca Toscano, Flavio Tosello, Tomasz Traczyk, David Christopher Truesdale, Wladyslaw Henryk Trzaska, Tomoya Tsuji, Alexandr Tumkin, Rosario Turrisi, Trine Spedstad Tveter, Jason Glyndwr Ulery, Kjetil Ullaland, Jochen Ulrich, Antonio Uras, Jozef Urban, Guido Marie Urciuoli, Gianluca Usai, Michal Vajzer, Martin Vala, Lizardo Valencia Palomo, Sara Vallero, Naomi Van Der Kolk, Pierre Van De Vyvre, Marco Van Leeuwen, Luigi Vannucci, Aurora Diozcora Vargas, Raghava Varma, Maria Vasileiou, Andrey Vasiliev, Vladimir Vechernin, Misha Veldhoen, Massimo Venaruzzo, Ermanno Vercellin, Sergio Vergara, Don Constantin Vernekohl, Renaud Vernet, Marta Verweij, Linda Vickovic, Giuseppe Viesti, Oleg Vikhlyantsev, Zabulon Vilakazi, Orlando Villalobos Baillie, Leonid Vinogradov, Yury Vinogradov, Alexander Vinogradov, Tiziano Virgili, Yogendra Viyogi, Alexander Vodopianov, Sergey Voloshin, Kirill Voloshin, Giacomo Volpe, Barthelemy Von Haller, Danilo Vranic, Gaute Vrebekk, Janka Vrlakova, Bogdan Vulpescu, Alexey Vyushin, Boris Wagner, Vladimir Wagner, Renzhuo Wan, Yifei Wang, Mengliang Wang, Dong Wang, Yaping Wang, Kengo Watanabe, Johannes Wessels, Uwe Westerhoff, Jens Wiechula, Jon Wikne, Martin Rudolf Wilde, Grzegorz Andrzej Wilk, Alexander Wilk, Crispin Williams, Bernd Stefan Windelband, Leonidas Xaplanteris Karampatsos, Hongyan Yang, Shiming Yang, Satoshi Yano, Stanislav Yasnopolsky, Jungyu Yi, Zhongbao Yin, Hiroki Yokoyama, In Kwon Yoo, Jongik Yoon, Weilin Yu, Xianbao Yuan, Igor Yushmanov, Cenek Zach, Chiara Zampolli, Sergey Zaporozhets, Andrey Zarochentsev, Petr Zavada, Nikolai Zaviyalov, Hanna Paulina Zbroszczyk, Pierre Zelnicek, Sorin Ion Zgura, Mikhail Zhalov, Xiaoming Zhang, Fengchu Zhou, You Zhou, Daicui Zhou, Xiangrong Zhu, Antonino Zichichi, Alice Zimmermann, Gennady Zinovjev, Yannick Denis Zoccarato, Mykhaylo Zynovyev

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42 Citas (Scopus)

Resumen

We present measurements of Underlying Event observables in pp collisions at √s = 0.9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum pT,LTin the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different pTthresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p Tthreshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed pTin the Transverse region by about 10-30%. Open Access, Copyright CERN, for the benefit of the ALICE collaboration.
Idioma originalEspañol
PublicaciónJournal of High Energy Physics
Volumen2012
EstadoPublicada - 1 jul. 2012

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