| 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, Christoph Blume, 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, Davide Pagano, Salvatore Aiola, 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, Danilo Silva de Albuquerque, Francesca Bellini, Vladimir Kovalenko, Antonio Ortiz, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, Arild Velure, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Jan Čepila, 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, Panos Kostarakis, Nikola Poljak, Ayben Karasu Uysal, Gabriele Gaetano Fronzé, 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, Yury Melikyan, Luciano Ramello, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Michael Winn, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Michele Floris, Sergey Gorbunov, Arturo Fernández Téllez, Marco Van Leeuwen, Livio BIANCHI, 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, 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, Kadri Ozdemir, 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: |
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| Zdroj: |
Physical Review C. 94 |
| ISSN: |
2469-9993
2469-9985 |
| Popis: |
We report the transverse energy ($E_{\mathrm T}$) measured with ALICE at midrapidity in Pb-Pb collisions at ${\sqrt{s_{\mathrm {NN}}}}$ = 2.76 TeV as a function of centrality. The transverse energy was measured using identified single particle tracks. The measurement was cross checked using the electromagnetic calorimeters and the transverse momentum distributions of identified particles previously reported by ALICE. The results are compared to theoretical models as well as to results from other experiments. The mean $E_{\mathrm T}$ per unit pseudorapidity ($\eta$), $\langle $d$E_{\mathrm T}/$d$\eta \rangle$, in 0-5% central collisions is 1737 $\pm$ 6(stat.) $\pm$ 97(sys.) GeV. We find a similar centrality dependence of the shape of $\langle $d$E_{\mathrm T}/$d$\eta \rangle$ as a function of the number of participating nucleons to that seen at lower energies. The growth in $\langle $d$E_{\mathrm T}/$d$\eta \rangle$ at the LHC ${\sqrt{s_{\mathrm {NN}}}}$ exceeds extrapolations of low energy data. We observe a nearly linear scaling of $\langle $d$E_{\mathrm T}/$d$\eta \rangle$ with the number of quark participants. With the canonical assumption of a 1 fm/$c$ formation time, we estimate that the energy density in 0-5% central Pb-Pb collisions at ${\sqrt{s_{\mathrm {NN}}}}$ = 2.76 TeV is 12.3 $\pm$ 1.0 GeV/fm$^3$\xspace and that the energy density at the most central 80 fm$^2$ of the collision is at least 21.5 $\pm$ 1.7 GeV/fm$^3$. This is roughly 2.3 times that observed in 0-5% central Au-Au collisions at ${\sqrt{s_{\mathrm {NN}}}}$ = 200 GeV. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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