Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at sNN−−−√=5.02 TeV with the ATLAS detector
2016 | journal article. A publication with affiliation to the University of Göttingen.
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Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at sNN−−−√=5.02 TeV with the ATLAS detector
Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O. & Aben, R. et al. (2016)
The European Physical Journal C, 76 art. 199. DOI: https://doi.org/10.1140/epjc/s10052-016-4002-3
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Details
- Authors Group
- ATLAS Collaboration
The authors list is uncomplete: - Authors
- Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Abolins, M.; AbouZeid, O. S.; Zwalinski, L.
- Abstract
- The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 μb−1 of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of sNN−−−√=5.02 TeV using the ATLAS detector at the Large Hadron Collider. Charged particles with absolute pseudorapidity less than 2.7 are reconstructed using the ATLAS pixel detector. The https://static-content.springer.com/image/art%3A10.1140%2Fepjc%2Fs10052-016-4002-3/MediaObjects/10052_2016_4002_IEq7_HTML.gif collision centrality is characterised by the total transverse energy measured in the Pb-going direction of the forward calorimeter. The charged-particle pseudorapidity distributions are found to vary strongly with centrality, with an increasing asymmetry between the proton-going and Pb-going directions as the collisions become more central. Three different estimations of the number of nucleons participating in the https://static-content.springer.com/image/art%3A10.1140%2Fepjc%2Fs10052-016-4002-3/MediaObjects/10052_2016_4002_IEq8_HTML.gif collision have been carried out using the Glauber model as well as two Glauber–Gribov inspired extensions to the Glauber model. Charged-particle multiplicities per participant pair are found to vary differently for these three models, highlighting the importance of including colour fluctuations in nucleon–nucleon collisions in the modelling of the initial state of https://static-content.springer.com/image/art%3A10.1140%2Fepjc%2Fs10052-016-4002-3/MediaObjects/10052_2016_4002_IEq9_HTML.gif collisions.
- Issue Date
- 2016
- Journal
- The European Physical Journal C
- Project
- info:eu-repo/grantAgreement/EC/FP7/246806/EU/European Particle physics Latin American NETwork/EPLANET
info:eu-repo/grantAgreement/EC/H2020/643410/EU//OpenAIRE2020 - Organization
- Fakultät für Physik
- ISSN
- 1434-6052
- Language
- English