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Online data compression in the ALICE O$^2$ facility
Richter, Matthias Rudolph, Aamodt, Kenneth, Arsene, Ionut Christian, Bravina, Larissa, Dordic, Olja, Eyyubova, Gyulnara, Hille, Per Thomas, Kolevatov, Rodion, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Nyiri, Agnes, Skaali, Toralf Bernhard, Tveter, Trine Spedstad
Richter M, Aamodt K, Arsene IC, Bravina L, Dordic O, Eyyubova G, Hille PT, Kolevatov R, Kværnø H, Lindal S, Løvhøiden G, Milosevic J, Nilsson MS, Nyiri A, Skaali TB, Tveter TS, Tywoniuk K, Wikne JC, Zabrodin E, Alme J, Bablok SR, Djuvsland Ø, Fehlker D, Haaland ØS, Huang M, Kanaki K, Klovning A, Larsen DT, Liu L, Nystrand J, Øvrebekk G, Pommeresche B, Skjerdal K, Ullaland K, Wagner B, Helstrup H, Hetland KF, Kileng B, Røed K, Pocheptsov TA, Altinpinar S, Røhrich D, Adamová D, Aggarwal MM, Aglieri Rinella G, Ahammed Z, Ahn SU, Akindinov A, Aleksandrov D, Alessandro B, ALICE C. Online data compression in the ALICE O2 facility. Journal of Physics, Conference Series. 2017;898:032049
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Title: Online data compression in the ALICE O$^2$ facility
Author: Richter, Matthias Rudolph; Aamodt, Kenneth; Arsene, Ionut Christian; Bravina, Larissa; Dordic, Olja; Eyyubova, Gyulnara; Hille, Per Thomas; Kolevatov, Rodion; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Nyiri, Agnes; Skaali, Toralf Bernhard; Tveter, Trine Spedstad
Date: 2017
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
Description: The ALICE Collaboration and the ALICE O2 project have carried out detailed studies for a new online computing facility planned to be deployed for Run 3 of the Large Hadron Collider (LHC) at CERN. Some of the main aspects of the data handling concept are partial reconstruction of raw data organized in so called time frames, and based on that information reduction of the data rate without significant loss in the physics information. A production solution for data compression has been in operation for the ALICE Time Projection Chamber (TPC) in the ALICE High Level Trigger online system since 2011. The solution is based on reconstruction of space points from raw data. These so called clusters are the input for reconstruction of particle trajectories. Clusters are stored instead of raw data after a transformation of required parameters into an optimized format and subsequent lossless data compression techniques. With this approach, a reduction of 4.4 has been achieved on average. For Run 3,...
Is part of: Richter M, Aamodt K, Arsene IC, Bravina L, Dordic O, Eyyubova G, Hille PT, Kolevatov R, Kværnø H, Lindal S, Løvhøiden G, Milosevic J, Nilsson MS, Nyiri A, Skaali TB, Tveter TS, Tywoniuk K, Wikne JC, Zabrodin E, Alme J, Bablok SR, Djuvsland Ø, Fehlker D, Haaland ØS, Huang M, Kanaki K, Klovning A, Larsen DT, Liu L, Nystrand J, Øvrebekk G, Pommeresche B, Skjerdal K, Ullaland K, Wagner B, Helstrup H, Hetland KF, Kileng B, Røed K, Pocheptsov TA, Altinpinar S, Røhrich D, Adamová D, Aggarwal MM, Aglieri Rinella G, Ahammed Z, Ahn SU, Akindinov A, Aleksandrov D, Alessandro B, ALICE C. Online data compression in the ALICE O2 facility. Journal of Physics, Conference Series. 2017;898:032049

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Online data compression in the ALICE O2 facility
Richter, Matthias Rudolph, Aamodt, Kenneth, Arsene, Ionut Christian, Bravina, Larissa, Dordic, Olja, Eyyubova, Gyulnara, Hille, Per Thomas, Kolevatov, Rodion, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Nyiri, Agnes, Skaali, Toralf Bernhard, Tveter, Trine Spedstad
Journal of physics. Conference series, 2017 [Peer Reviewed Journal]

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Charge separation relative to the reaction plane in Pb-Pb collisions at root s(NN)=2.76 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Liu, Lijiao, Nystrand, Joakim, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Szostak, Artur Krzysztof, Ullaland, Kjetil, Wagner, Boris, Yang, Shiming, Øvrebekk, Gaute, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Pocheptsov, Timur Anatolievich, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Akindinov, Alexander, Aleksandrov, Dimitry, Alice, Collaboration
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Title: Charge separation relative to the reaction plane in Pb-Pb collisions at root s(NN)=2.76 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Liu, Lijiao; Nystrand, Joakim; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Szostak, Artur Krzysztof; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Øvrebekk, Gaute; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Pocheptsov, Timur Anatolievich; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Akindinov, Alexander; Aleksandrov, Dimitry; Alice, Collaboration
Date: 2013
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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Centrality dependence of charged particle production at large transverse momentum in Pb-Pb collisions at root s(NN)=2.76 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Liu, Lijiao, Nystrand, Joakim, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Szostak, Artur Krzysztof, Ullaland, Kjetil, Øvrebekk, Gaute, Wagner, Boris, Yang, Shiming, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Alice, Collaboration, Akindinov, Alexander, Aleksandrov, Dimitry, Alessandro, Bruno
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Title: Centrality dependence of charged particle production at large transverse momentum in Pb-Pb collisions at root s(NN)=2.76 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Liu, Lijiao; Nystrand, Joakim; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Szostak, Artur Krzysztof; Ullaland, Kjetil; Øvrebekk, Gaute; Wagner, Boris; Yang, Shiming; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Alice, Collaboration; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno
Date: 2013
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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Measurement of the inclusive differential jet cross section in pp collisions at root s=2.76 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Lønne, Per - Ivar, Nystrand, Joakim, Rehman, Attiq Ur, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Szostak, Artur Krzysztof, Ullaland, Kjetil, Wagner, Boris, Yang, Shiming, Dordic, Olja, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Akindinov, Alexander, Aleksandrov, Dimitry, Alessandro, Bruno, Alfaro, Molina, Alice, Collaboration
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Title: Measurement of the inclusive differential jet cross section in pp collisions at root s=2.76 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per - Ivar; Nystrand, Joakim; Rehman, Attiq Ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Szostak, Artur Krzysztof; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Dordic, Olja; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno; Alfaro, Molina; Alice, Collaboration
Date: 2013
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Lønne, Per - Ivar, Nystrand, Joakim, Rehman, Attiq Ur, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Ullaland, Kjetil, Wagner, Boris, Yang, Shiming, Bätzing, Paul Christoph, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Ajaz, Muhammad, Akindinov, Alexander, Aleksandrov, Dimitry, Alessandro, Bruno, Alice, Collaboration
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Title: Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per - Ivar; Nystrand, Joakim; Rehman, Attiq Ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Ajaz, Muhammad; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno; Alice, Collaboration
Date: 2013
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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J/psi Suppression at Forward Rapidity in Pb-Pb Collisions at root s(NN)=2.76 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Kanaki, Kalliopi, Langøy, Rune, Lien, Jørgen, Liu, Lijiao, Lønne, Per - Ivar, Nystrand, Joakim, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Szostak, Artur Krzysztof, Ullaland, Kjetil, Øvrebekk, Gaute, Wagner, Boris, Yang, Shiming, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Pocheptsov, Timur Anatolievich, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un
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Title: J/psi Suppression at Forward Rapidity in Pb-Pb Collisions at root s(NN)=2.76 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Kanaki, Kalliopi; Langøy, Rune; Lien, Jørgen; Liu, Lijiao; Lønne, Per - Ivar; Nystrand, Joakim; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Szostak, Artur Krzysztof; Ullaland, Kjetil; Øvrebekk, Gaute; Wagner, Boris; Yang, Shiming; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Pocheptsov, Timur Anatolievich; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un
Date: 2012
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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Transverse sphericity of primary charged particles in minimum bias proton-proton collisions at root s=0.9, 2.76 and 7 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Kanaki, Kalliopi, Langøy, Rune, Lien, Jørgen, Liu, Lijiao, Lønne, Per - Ivar, Nystrand, Joakim, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Szostak, Artur Krzysztof, Ullaland, Kjetil, Øvrebekk, Gaute, Wagner, Boris, Yang, Shiming, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias Rudolph, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abelev, Betty, Abrahantes Quintana, Arian, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un
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Title: Transverse sphericity of primary charged particles in minimum bias proton-proton collisions at root s=0.9, 2.76 and 7 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Kanaki, Kalliopi; Langøy, Rune; Lien, Jørgen; Liu, Lijiao; Lønne, Per - Ivar; Nystrand, Joakim; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Szostak, Artur Krzysztof; Ullaland, Kjetil; Øvrebekk, Gaute; Wagner, Boris; Yang, Shiming; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias Rudolph; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Abrahantes Quintana, Arian; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un
Date: 2012
Subject: Vdp::Matematikk Og Naturvitenskap: 400::Fysikk: 430::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Mathematics And Natural Scienses: 400::Physics: 430::Nuclear And Elementary Particle Physics: 431
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Mid-rapidity anti-baryon to baryon ratios in pp collisions at root s=0.9, 2.76 and 7 TeV measured by ALICE
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Lønne, Per - Ivar, Nystrand, Joakim, Rehman, Attiq Ur, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Ullaland, Kjetil, Wagner, Boris, Yang, Shiming, Bätzing, Paul Christoph, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Abbas, Eham Gamal, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Aguilar Salazar, Saul, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Akindinov, Alexander, Aleksandrov, Dimitry, Alessandro, Bruno, Alice, Collaboration
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Title: Mid-rapidity anti-baryon to baryon ratios in pp collisions at root s=0.9, 2.76 and 7 TeV measured by ALICE
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per - Ivar; Nystrand, Joakim; Rehman, Attiq Ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Abbas, Eham Gamal; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno; Alice, Collaboration
Date: 2013
Subject: Transverse Momentum ; Systematic Uncertainty ; Time Projection Chamber ; Primary Vertex ; Elastic Cross Section ; Vdp::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Nuclear And Elementary Particle Physics: 431
Description: The ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for p − /p , Λ − − /Λ , Ξ − − + /Ξ − and Ω − − + /Ω − in pp collisions at s √ =0.9, 2.76 and 7 TeV , measured with the ALICE detector at the LHC, are reported. Within the experimental uncertainties and ranges covered by our measurement, these ratios are independent of rapidity, transverse momentum and multiplicity for all measured energies. The results are compared to expectations from event generators, such as PYTHIA and HIJING/B, that are used to model the particle production in pp collisions. The energy dependence of p − /p , Λ − − /Λ , Ξ − − + /Ξ − and Ω − − + /Ω − , reaching values compatible with unity for s √ =7 TeV , complement the earlier p − /p measurement of ALICE. These dependencies can be described by exchanges with the Regge-trajectory intercept of α J ≈0.5 , which are suppressed with increasing rapidity interval Δy. Any significant contribution of an exchange not suppressed at large Δy (reached at LHC energies) is disfavoured.
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J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV
Alme, Johan, Erdal, Hege Austrheim, Helstrup, Håvard, Hetland, Kristin Fanebust, Kileng, Bjarte, Altinpinar, Sedat, Djuvsland, Øystein, Fehlker, Dominik, Haaland, Øystein Senneset, Huang, Meidana, Langøy, Rune, Lien, Jørgen, Lønne, Per - Ivar, Nystrand, Joakim, Rehman, Attiq Ur, Røed, Ketil, Røhrich, Dieter, Skjerdal, Kyrre, Ullaland, Kjetil, Wagner, Boris, Yang, Shiming, Bätzing, Paul Christoph, Dordic, Olja, Eyyubova, Gyulnara, Kværnø, Henning, Lindal, Svein, Løvhøiden, Gunnar, Milosevic, Jovan, Nilsson, Mads Stormo, Qvigstad, Henrik, Richter, Matthias, Skaali, Toralf Bernhard, Tveter, Trine Spedstad, Wikne, Jon Christopher, Abbas, Eham Gamal, Abelev, Betty, Adam, Jaroslav, Adamová, Dagmar, Adare, Andrew Marshall, Aggarwal, Madan M., Aglieri Rinella, Gianluca, Agocs, Andreas Gabor, Agostinelli, Andrea, Ahammed, Zubayer, Ahmad, Nazeer, Ahmad Masoodi, Arshar, Ahn, Sang Un, Ajaz, Muhammad, Aleksandrov, Dimitry, Alessandro, Bruno, Alice, Collaboration
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Title: J/psi Elliptic Flow in Pb-Pb Collisions at root s(NN)=2.76 TeV
Author: Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per - Ivar; Nystrand, Joakim; Rehman, Attiq Ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abbas, Eham Gamal; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Ajaz, Muhammad; Aleksandrov, Dimitry; Alessandro, Bruno; Alice, Collaboration
Date: 2013
Subject: Vdp::Kjerne- Og Elementærpartikkelfysikk: 431 ; Vdp::Nuclear And Elementary Particle Physics: 431
Description: This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
We report on the first measurement of inclusive J/ψ elliptic flow v2 in heavy-ion collisions at the LHC. The measurement is performed with the ALICE detector in Pb-Pb collisions at √sNN = 2.76 TeV in the rapidity range 2.5 < y < 4.0. The dependence of the J/ψ v2 on the collision centrality and on the J/ψ transverse momentum is studied in the range 0≤pT
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Online data compression in the ALICE O2 facility