Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions atsNN=2.76TeV

Autor: Christian Klein-Boesing, Podist Kurashvili, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Toru Sugitate, Paolo Bartalini, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Martin Schulc, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Muhammad Umair Naru, Jihyun Bhom, Caio Alves Garcia Prado, Yaroslav Berdnikov, Lee Barnby, Alexandre Suaide, Amalia Pop, Alexey Kurepin, Pasquale Di Nezza, Dr. Biswarup Paul, Jesus Roberto Millan-Almaraz, Ali OKATAN, Salvatore De Pasquale, Sara Vallero, Boris Teyssier, Prabhat Ranjan Pujahari, Elena Rocco, Ketil Røed, Nikolay Zaviyalov, Jovan Milosevic, Sumit Basu, Mirko Planinic, Jiri A. Mares, Paola Gianotti, Ashim Roy, Janusz Oleniacz, Professor David Evans, Salvatore Aiola, Marco Antonio Tangaro, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Ramona Lea, Lilit Karayan, Renu Bala, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Vito Manzari, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Krzysztof Redlich, Thomas Peitzmann, Kristjan Gulbrandsen, Christine Nattrass, Elena Botta, Ranjit Nayak, Francesca Bellini, Vladimir Kovalenko, Antonio Ortiz, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, Arild Velure, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Andrea Festanti, Raphael Tieulent, Federico Ronchetti, David Silvermyr, Victor Riabov, Kai Schweda, Christian Christensen, Jan Figiel, Adrian Sevcenco, Paolo Giubellino, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Jens Erik Brücken, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Sang Un Ahn, Elena G. Ferreiro, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Ion-Sorin ZGURA, Wladyslaw Henryk Trzaska, Eleuterio Spiriti, Raimond Snellings, Markus Keil, Guillaume Batigne, Nirbhay Kumar Behera, Andrea Alici, Mikael Mieskolainen, Satyajit Jena, Carlos Eugenio Perez Lara, Michal Sumbera, Chinorat Kobdaj, Luciano Ramello, Arturo Fernandez Tellez, Marielle Chartier, Sergey Fokin, Roy Lemmon, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Michael Winn, Grzegorz Stefanek, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Arturo Fernández Téllez, Marco Van Leeuwen, Giacomo Margagliotti, Dmitry Blau, Somnath Kar, Javier Castillo Castellanos, Anju Bhasin, Fiorella Maria Celeste Fionda, Petr Závada, Hector Bello Martinez, Anton Alkin, Roberto Preghenella, Elisa Meninno, Friederike Bock, Adam Kisiel, Grigory Feofilov, You Zhou, Stefano Bagnasco, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Tomas Vanat, Peter Christiansen, Gines Martinez Garcia, Oleg Grachov, Peter Hristov, Stefano Piano, Ivonne Alicia Maldonado Cervantes, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Peter Papcun, Barbara Guerzoni, Paolo Camerini, A. J. Rubio-Montero, Cristina Terrevoli, Lidia Goerlich, Alessandro Grelli, Massimo Masera, Alberto Martín Gago Medina, Giacomo Volpe, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Charalampos Kouzinopoulos, Sabyasachi Siddhanta, Sean Murray, Uzma Tabassam, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Piotr Gasik, Adela Kravcakova, Francesco Riggi, Marcello Lunardon, Marta Verweij, Francesco Prino
Rok vydání: 2016
Předmět:
Zdroj: Physical Review C. 93
ISSN: 2469-9993
2469-9985
Popis: We report on measurements of a charge-dependent flow using a novel three-particle correlator with ALICE in Pb-Pb collisions at the CERN Large Hadron Collider (LHC), and discuss the implications for observation of local parity violation and the chiral magnetic wave (CMW) in heavy-ion collisions. Charge-dependent flow is reported for different collision centralities as a function of the event charge asymmetry. While our results are in qualitative agreement with expectations based on the CMW, the nonzero signal observed in higher harmonics correlations indicates a possible significant background contribution. We also present results on a differential correlator, where the flow of positive and negative charges is reported as a function of the mean charge of the particles and their pseudorapidity separation. We argue that this differential correlator is better suited to distinguish the differences in positive and negative charges expected due to the CMW and the background effects, such as local charge conservation coupled with strong radial and anisotropic flow.
Databáze: OpenAIRE