Measurements of Underlying Event observables in pp collisions at √s = 0.9 and 7TeV. The analysis is performed as a function of the highest charged-particle transverse momentum pT,LT in 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 dierent pT thresholds: 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 pT threshold considered. Data are compared to Pythia 6.4, Pythia 8.1 and Phojet. On average, all models considered underestimate the multiplicity and summed pT in the Transverse region by about 10-30%.

Underlying Event measurements in pp collisions at $ \sqrt {s} = 0.9 $ and 7 TeV with the ALICE experiment at the LHC / Betty, Abelev; Arian Abrahantes, Quintana; Dagmar, Adamova; Andrew Marshall, Adare; Madan, Aggarwal; Gianluca Aglieri, Rinella; Andras Gabor, Agocs; Andrea, Agostinelli; Saul Aguilar, Salazar; Zubayer, Ahammed; Nazeer, Ahmad; Arshad, Ahmad; Sang Un, Ahn; Alexander, Akindinov; Dmitry, Aleksandrov; Bruno, Alessandro; Jose Ruben Alfaro, Molina; Andrea, Alici; Anton, Alkin; Erick Jonathan Almaraz, Avina; Torsten, Alt; Valerio, Altini; Sedat, Altinpinar; Igor, Altsybeev; Cristian, Andrei; Anton, Andronic; Venelin, Anguelov; Christopher Daniel, Anson; Tome, Anticic; Federico, Antinori; Pietro, Antonioli; Laurent Bernard, Aphecetche; Harald, Appelshauser; Nicolas, Arbor; Silvia, Arcelli; Andreas, Arend; Nestor, Armesto; Roberta, Arnaldi; Tomas Robert, Aronsson; Ionut Cristian, Arsene; Mesut, Arslandok; Andzhey, Asryan; Andre, Augustinus; Ralf Peter, Averbeck; Terry, Awes; Juha Heikki, Aysto; Mohd Danish, Azmi; Matthias Jakob, Bach; Angela, Badala; Yong Wook, Baek; Raphaelle Marie, Bailhache; Renu, Bala; Rinaldo Baldini, Ferroli; Alberto, Baldisseri; Alain, Baldit; Fernando Baltasar Dos Santos, Pedrosa; Jaroslav, Ban; Rama Chandra, Baral; Roberto, Barbera; Francesco, Barile; Gergely Gabor, Barnafoldi; Lee Stuart, Barnby; Valerie, Barret; Jerzy Gustaw, Bartke; Maurizio, Basile; Nicole, Bastid; Bastian, Bathen; Guillaume, Batigne; Boris, Batyunya; Christoph Heinrich, Baumann; Ian Gardner, Bearden; Hans, Beck; Iouri, Belikov; Francesca, Bellini; Rene, Bellwied; Ernesto Belmont, Moreno; Stefania, Beole; Ionela, Berceanu; Alexandru, Bercuci; Yaroslav, Berdnikov; Daniel, Berenyi; Cyrano, Bergmann; Dario, Berzano; Latchezar, Betev; Anju, Bhasin; Ashok Kumar, Bhati; Nicola, Bianchi; Livio, Bianchi; Chiara, Bianchin; Jaroslav, Bielcik; Jana, Bielcikova; Ante, Bilandzic; F., Blanco; Francesco, Blanco; Dmitry, Blau; Christoph, Blume; Marco, Boccioli; Nicolas, Bock; Alexey, Bogdanov; Hans, Boggild; 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; Bregant, Marco; 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; Camerini, Paolo; 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, Valle; Paul, Constantin; Contin, Giacomo; 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 Azevedo, Moregula; Gabriel, Barros; Annalisa, Caro; Giacinto, Cataldo; Jan, Cuveland; Alessandro, Falco; Daniele, Gruttola; Hugues, Delagrange; Eduardo Castillo, Sanchez; Andrzej, Deloff; Vyacheslav, Demanov; Nora, Marco; Ervin, Denes; Salvatore, Pasquale; Airton, Deppman; Ginevra, D’Erasmo; Raoul Stefan, Rooij; Domenico, Bari; Thomas, Dietel; Carmelo, Giglio; Sergio, Liberto; Antonio, Mauro; Pasquale, 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. K., 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; Fragiacomo, Enrico; 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; Grosso, Raffaele; 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. 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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, 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; 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Jochen, Ulrich; Antonio, Uras; Jozef, Urban; Guido Marie, Urciuoli; Gianluca, Usai; Michal, Vajzer; Martin, Vala; Lizardo Valencia, Palomo; Sara, Vallero; Naomi, Kolk; Pierre Vande, Vyvre; Marco, Leeuwen; Luigi, Vannucci; Aurora Diozcora, Vargas; Raghava, Varma; Maria, Vasileiou; Andrey, Vasiliev; Vladimir, Vechernin; Misha, Veldhoen; Venaruzzo, Massimo; 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, 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; 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[10.1007/JHEP07(2012)116]

Underlying Event measurements in pp collisions at $ \sqrt {s} = 0.9 $ and 7 TeV with the ALICE experiment at the LHC

BREGANT, MARCO;CAMERINI, Paolo;CONTIN, GIACOMO;FRAGIACOMO, ENRICO;GROSSO, Raffaele;LEA, RAMONA;MARGAGLIOTTI, GIACOMO;PIANO, STEFANO;RUI, RINALDO;VENARUZZO, MASSIMO;
2012-01-01

Abstract

Measurements of Underlying Event observables in pp collisions at √s = 0.9 and 7TeV. The analysis is performed as a function of the highest charged-particle transverse momentum pT,LT in 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 dierent pT thresholds: 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 pT threshold considered. Data are compared to Pythia 6.4, Pythia 8.1 and Phojet. On average, all models considered underestimate the multiplicity and summed pT in the Transverse region by about 10-30%.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2582820
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