| Autor: |
Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Boris Teyssier, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Stefania Beole', Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, Francesco Prino |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Physical Review C. 99 |
| ISSN: |
2469-9993
2469-9985 |
| Popis: |
The production yield of the Λ(1520) baryon resonance is measured at midrapidity in Pb-Pb collisions at sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). The measurement is performed in the Λ(1520)→pK− (and charge conjugate) hadronic decay channel as a function of the transverse momentum (pT) and collision centrality. The ratio of the pT-integrated production of Λ(1520) baryons relative to Λ baryons in central collisions is suppressed by about a factor of 2 with respect to peripheral collisions. This is the first observation of the suppression of a baryonic resonance at the LHC and the first 3σ evidence of Λ(1520) suppression within a single collision system. The measured Λ(1520)/Λ ratio in central collisions is smaller than the value predicted by the statistical hadronization model calculations. The shape of the measured pT distribution and the centrality dependence of the suppression are reproduced by the EPOS3 Monte Carlo event generator. The measurement adds further support to the formation of a dense hadronic phase in the final stages of the evolution of the fireball created in heavy-ion collisions, lasting long enough to cause a significant reduction in the observable yield of short-lived resonances. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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