Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5 < pT,assoc < pT,trig < 4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and pT bins, and the widths show no significant evolution with event multiplicity or pT. These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge.
Long-range angular correlations on the near and away side in p–Pb collisions at √sNN = 5.02 TeV / Betty, Abelev; Jaroslav, Adam; Dagmar, Adamova; Andrew Marshall Adare, ; Madan, Aggarwal; Gianluca Aglieri Rinella, ; Michelangelo, Agnello; Andras Gabor Agocs, ; Andrea, Agostinelli; Zubayer, Ahammed; Nazeer, Ahmad; Arshad, Ahmad; Sul Ah Ahn, ; Sang Un Ahn, ; Muhammad, Ajaz; Alexander, Akindinov; Dmitry, Aleksandrov; Bruno, Alessandro; Andrea, Alici; Anton, Alkin; Erick Jonathan Almaraz Avina, ; Johan, Alme; Torsten, Alt; Valerio, Altini; Sedat, Altinpinar; Igor, Altsybeev; Cristian, Andrei; Anton, Andronic; Venelin, Anguelov; Jonas, Anielski; 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; 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; Sumit, Basu; Bastian, Bathen; Guillaume, Batigne; Boris, Batyunya; Christoph Heinrich Baumann, ; Ian Gardner Bearden, ; Hans, Beck; Nirbhay Kumar Behera, ; Iouri, Belikov; Francesca, Bellini; Rene, Bellwied; Ernesto Belmont Moreno, ; Gyula, Bencedi; Stefania, Beole; Ionela, Berceanu; Alexandru, Bercuci; Yaroslav, Berdnikov; Daniel, Berenyi; Anais Annick Erica Bergognon, ; Dario, Berzano; Latchezar, Betev; Anju, Bhasin; Ashok Kumar Bhati, ; Jihyun, Bhom; Livio, Bianchi; Nicola, Bianchi; Jaroslav, Bielcik; Jana, Bielcikova; Ante, Bilandzic; Sandro, Bjelogrlic; Francesco, Blanco; Blanco, F.; Dmitry, Blau; Christoph, Blume; Marco, Boccioli; Stefan, Boettger; Alexey, Bogdanov; Hans, Boggild; Mikhail, Bogolyubsky; Laszlo, Boldizsar; Marek, Bombara; Julian, Book; Herve, Borel; Alexander, Borissov; Francesco, Bossu; Michiel, Botje; Elena, Botta; Ermes, Braidot; Peter Braun Munzinger, ; Bregant, Marco; Timo Gunther Breitner, ; Theo Alexander Broker, ; Tyler Allen Browning, ; Michal, Broz; Rene, Brun; Elena, Bruna; Giuseppe Eugenio Bruno, ; Dmitry, Budnikov; Henner, Buesching; Stefania, Bufalino; Predrag, Buncic; Oliver, Busch; Edith Zinhle Buthelezi, ; Diego Caballero Orduna, ; Davide, Caffarri; Cai, Xu; Helen Louise Caines, ; Ernesto Calvo Villar, ; Camerini, Paolo; Veronica Canoa Roman, ; Giovanni Cara Romeo, ; Wisla, Carena; Francesco, Carena; Nelson Carlin Filho, ; Federico, Carminati; Amaya Ofelia Casanova Diaz, ; Javier Ernesto Castillo Castellanos, ; Juan Francisco Castillo Hernandez, ; Ester Anna Rita Casula, ; Vasile, Catanescu; Costanza, Cavicchioli; Cesar Ceballos Sanchez, ; Jan, Cepila; Piergiaio, Cerello; Beomsu, Chang; Sylvain, Chapeland; Jean Luc Fernand Charvet, ; Sukalyan, Chattopadhyay; Subhasis, Chattopadhyay; Isha, Chawla; Michael Gerard Cherney, ; Cvetan, Cheshkov; Brigitte, Cheynis; Vasco Miguel Chibante Barroso, ; David, Chinellato; Peter, Chochula; Marek, Chojnacki; Subikash, Choudhury; Panagiotis, Christakoglou; Christian Holm Christensen, ; Peter, Christiansen; Tatsuya, Chujo; Suh Urk Chung, ; Corrado, Cicalo; Luisa, Cifarelli; Federico, Cindolo; Jean Willy Andre Cleymans, ; Fabrizio, Coccetti; Fabio, Colamaria; Domenico, Colella; Alberto, Collu; Gustavo Conesa Balbastre, ; Zaida Conesa del Valle, ; Megan Elizabeth Connors, ; 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, ; Rigoberto Cruz Albino, ; Eleazar, Cuautle; Leticia, Cunqueiro; Andrea, Dainese; Hans Hjersing Dalsgaard, ; Andrea, Danu; Indranil, Das; Debasish, Das; Supriya, Das; Kushal, Das; Ajay Kumar Dash, ; Sadhana, Dash; Sudipan, De; Gabriel de Barros, ; Annalisa De Caro, ; Giacinto de Cataldo, ; Jan de Cuveland, ; Alessandro De Falco, ; Daniele De Gruttola, ; Hugues, Delagrange; Andrzej, Deloff; Nora De Marco, ; Ervin, Denes; Salvatore De Pasquale, ; Airton, Deppman; Ginevra, Dʼerasmo; Raoul Stefan de Rooij, ; Miguel Angel Diaz Corchero, ; 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, ; Benjamin, Donigus; Olja, Dordic; Olga, Driga; Anand Kumar Dubey, ; Andrea, Dubla; Laurent, Ducroux; Pascal, Dupieux; Dutta Majumdar, A. K.; Domenico, Elia; David Philip Emschermann, ; Heiko, Engel; Barbara, Erazmus; 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, ; Dominik, Fehlker; Linus, Feldkamp; Daniel, Felea; Alessandro, Feliciello; Bo Fenton Olsen, ; Grigory, Feofilov; Arturo Fernandez Tellez, ; Alessandro, Ferretti; Andrea, Festanti; Jan, Figiel; Marcel, Figueredo; Sergey, Filchagin; Dmitry, Finogeev; Fiorella, Fionda; Enrichetta Maria Fiore, ; Emmanuel, Floratos; Michele, Floris; Siegfried Valentin Foertsch, ; Panagiota, Foka; Sergey, Fokin; Fragiacomo, Enrico; Andrea, Francescon; 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; Mihaela, Gheata; Andrei Geae 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; 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; Barbara, Guerzoni; Maxime Rene Joseph Guilbaud, ; Kristjan Herlache Gulbrandsen, ; Hrant, Gulkanyan; Taku, Gunji; Anik, Gupta; Ramni, Gupta; Rudiger, Haake; 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; Austin, Harton; Despoina, Hatzifotiadou; Shinichi, Hayashi; Arsen, Hayrapetyan; Stefan Thomas Heckel, ; Markus Ansgar Heide, ; Haavard, Helstrup; Andrei Ionut Herghelegiu, ; Gerardo Antonio Herrera Corral, ; Norbert, Herrmann; Benjamin Andreas Hess, ; Kristin Fanebust Hetland, ; Bernard, Hicks; Boris, Hippolyte; Yasuto, Hori; Peter Zahariev Hristov, ; Ivana, Hrivnacova; Meidana, Huang; Thomas, Humanic; Dae Sung Hwang, ; Raphaelle, Ichou; Radiy, Ilkaev; Iryna, Ilkiv; Motoi, Inaba; Elisa, Incani; Pier Giaio Innocenti, ; Gian Michele Innocenti, ; Mikhail, Ippolitov; Muhammad, Irfan; Cristian Geae Ivan, ; Vladimir, Ivanov; Andrey, Ivanov; Marian, Ivanov; Oleksii, Ivanytskyi; Adam Wlodzimierz Jacholkowski, ; Peter, Jacobs; Haeng Jin Jang, ; Malgorzata Anna Janik, ; Rudolf, Janik; Sandun, Jayarathna; Satyajit, Jena; Deeptanshu Manu Jha, ; Raul Tonatiuh Jimenez Bustamante, ; Peter Graham Jones, ; Hyung Taik Jung, ; Anton, Jusko; Alexei, Kaidalov; Sebastian, Kalcher; Peter, Kalinak; Tuomo Esa Aukusti Kalliokoski, ; Alexander Philipp Kalweit, ; Ju Hwan Kang, ; Vladimir, Kaplin; Ayben Karasu Uysal, ; Oleg, Karavichev; Tatiana, Karavicheva; Evgeny, Karpechev; Andrey, Kazantsev; Udo Wolfgang Kebschull, ; Ralf, Keidel; Palash, Khan; Shuaib Ahmad Khan, ; Mohisin Mohammed Khan, ; Kamal Hussain Khan, ; Alexei, Khanzadeev; Yury, Kharlov; Bjarte, Kileng; Beomkyu, Kim; Jin Sook Kim, ; Jonghyun, Kim; Dong Jo Kim, ; Do Won Kim, ; Taesoo, Kim; Se Yong Kim, ; Mimae, Kim; Minwoo, 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, ; Anders Garritt Knospe, ; Markus, Kohler; Thorsten, Kollegger; Anatoly, Kolojvari; Mikhail, Kompaniets; Valery, Kondratiev; Natalia, Kondratyeva; Artem, Konevskih; Vladimir, Kovalenko; Marek, Kowalski; Serge, Kox; Greeshma Koyithatta Meethaleveedu, ; Jiri, Kral; Ivan, Kralik; Frederick, Kramer; Adela, Kravcakova; Tobias, Krawutschke; Michal, Krelina; Matthias, Kretz; Marian, Krivda; Filip, Krizek; Miroslav, Krus; Evgeny, Kryshen; Mikolaj, Krzewicki; Yury, Kucheriaev; Thanushan, Kugathasan; Christian Claude Kuhn, ; Paul, Kuijer; Igor, Kulakov; Jitendra, Kumar; Podist, Kurashvili; Kurepin, A.; Kurepin, A. 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Long-range angular correlations on the near and away side in p–Pb collisions at √sNN = 5.02 TeV
BREGANT, MARCO;CAMERINI, Paolo;CONTIN, GIACOMO;FRAGIACOMO, ENRICO;LEA, RAMONA;MARGAGLIOTTI, GIACOMO;PIANO, STEFANO;RUI, RINALDO;VENARUZZO, MASSIMO;Valentina Zaccolo;
2013-01-01
Abstract
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5 < pT,assoc < pT,trig < 4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and pT bins, and the widths show no significant evolution with event multiplicity or pT. These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge.Pubblicazioni consigliate
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