Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC

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dc.contributor.authorAbelev, B
dc.contributor.authorAdam, J
dc.contributor.authorAdamová, D
dc.contributor.authorAggarwal, M M
dc.contributor.authorRinella, G Aglieri
dc.contributor.authorAgnello, M
dc.contributor.authorAgostinelli, A
dc.contributor.authorAgrawal, N
dc.contributor.authorAhammed, Z
dc.contributor.authorAhmad, N
dc.contributor.authorAhmed, I
dc.contributor.authorAhn, S U
dc.contributor.authorAhn, S A
dc.contributor.authorAimo, I
dc.contributor.authorAiola, S
dc.contributor.authorAjaz, M
dc.contributor.authorAkindinov, A
dc.contributor.authorAlam, S N
dc.contributor.authorAleksandrov, D
dc.contributor.authorAlessandro, B
dc.contributor.authorAlexandre, D
dc.contributor.authorAlici, A
dc.contributor.authorAlkin, A
dc.contributor.authorAlme, J
dc.contributor.authorAlt, T
dc.contributor.authorAltinpinar, S
dc.contributor.authorAltsybeev, I
dc.contributor.authorAlves Garcia Prado, C
dc.contributor.authorAndrei, C
dc.contributor.authorAndronic, A
dc.contributor.authorAnguelov, V
dc.contributor.authorAnielski, J
dc.date.accessioned2021-10-08T07:20:43Z
dc.date.available2021-10-08T07:20:43Z
dc.date.issued2014
dc.description.abstractEvent-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at √s = 0.9, 2.76 and 7 TeV, and Pb–Pb collisions at √sNN = 2.76 TeV are studied as a function of the chargedparticle multiplicity using the ALICE detector at the LHC. Dynamical fluctuations indicative of correlated particle emission are observed in all systems. The results in pp collisions show little dependence on collision energy. The Monte Carlo event generators PYTHIA and PHOJET are in qualitative agreement with the data. Peripheral Pb–Pb data exhibit a similar multiplicity dependence as that observed in pp. In central Pb–Pb, the results deviate from this trend, featuring a significant reduction of the fluctuation strength. The results in Pb– Pb are in qualitative agreement with previous measurements in Au–Au at lower collision energies and with expectations from models that incorporate collective phenomena.
dc.identifier.apacitationAbelev, B., Adam, J., Adamová, D., Aggarwal, M. M., Rinella, G. A., Agnello, M., ... Anielski, J. (2014). Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC. <i>The European Physical Journal C - Particles and Fields</i>, 74(10), 1 - 15. http://hdl.handle.net/11427/34988en_ZA
dc.identifier.chicagocitationAbelev, B, J Adam, D Adamová, M M Aggarwal, G Aglieri Rinella, M Agnello, A Agostinelli, et al "Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC." <i>The European Physical Journal C - Particles and Fields</i> 74, 10. (2014): 1 - 15. http://hdl.handle.net/11427/34988en_ZA
dc.identifier.citationAbelev, B., Adam, J., Adamová, D., Aggarwal, M.M., Rinella, G.A., Agnello, M., Agostinelli, A. & Agrawal, N. et al. 2014. Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC. <i>The European Physical Journal C - Particles and Fields.</i> 74(10):1 - 15. http://hdl.handle.net/11427/34988en_ZA
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.ris TY - Journal Article AU - Abelev, B AU - Adam, J AU - Adamová, D AU - Aggarwal, M M AU - Rinella, G Aglieri AU - Agnello, M AU - Agostinelli, A AU - Agrawal, N AU - Ahammed, Z AU - Ahmad, N AU - Ahmed, I AU - Ahn, S U AU - Ahn, S A AU - Aimo, I AU - Aiola, S AU - Ajaz, M AU - Akindinov, A AU - Alam, S N AU - Aleksandrov, D AU - Alessandro, B AU - Alexandre, D AU - Alici, A AU - Alkin, A AU - Alme, J AU - Alt, T AU - Altinpinar, S AU - Altsybeev, I AU - Alves Garcia Prado, C AU - Andrei, C AU - Andronic, A AU - Anguelov, V AU - Anielski, J AB - Event-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at √s = 0.9, 2.76 and 7 TeV, and Pb–Pb collisions at √sNN = 2.76 TeV are studied as a function of the chargedparticle multiplicity using the ALICE detector at the LHC. Dynamical fluctuations indicative of correlated particle emission are observed in all systems. The results in pp collisions show little dependence on collision energy. The Monte Carlo event generators PYTHIA and PHOJET are in qualitative agreement with the data. Peripheral Pb–Pb data exhibit a similar multiplicity dependence as that observed in pp. In central Pb–Pb, the results deviate from this trend, featuring a significant reduction of the fluctuation strength. The results in Pb– Pb are in qualitative agreement with previous measurements in Au–Au at lower collision energies and with expectations from models that incorporate collective phenomena. DA - 2014 DB - OpenUCT DP - University of Cape Town IS - 10 J1 - The European Physical Journal C - Particles and Fields LK - https://open.uct.ac.za PY - 2014 SM - 1434-6044 SM - 1434-6052 T1 - Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC TI - Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC UR - http://hdl.handle.net/11427/34988 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34988
dc.identifier.vancouvercitationAbelev B, Adam J, Adamová D, Aggarwal MM, Rinella GA, Agnello M, et al. Event-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC. The European Physical Journal C - Particles and Fields. 2014;74(10):1 - 15. http://hdl.handle.net/11427/34988.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyFaculty of Science
dc.sourceThe European Physical Journal C - Particles and Fields
dc.source.journalissue10
dc.source.journalvolume74
dc.source.pagination1 - 15
dc.source.urihttps://dx.doi.org/10.1140/epjc/s10052-014-3077-y
dc.subject.other:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]
dc.subject.other:Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]
dc.subject.otherVDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431
dc.subject.otherVDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431
dc.subject.otherJournal article
dc.titleEvent-by-event mean pT fluctuations in pp and Pb–Pb collisions at the LHC
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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