Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector

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 wi...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
Medición
ATLAS detector
pseudorapidity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79342
https://arxiv.org/abs/1508.00848
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79342
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Medición
ATLAS detector
pseudorapidity
spellingShingle Ciencias Exactas
Física
Medición
ATLAS detector
pseudorapidity
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Medición
ATLAS detector
pseudorapidity
description 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 p+Pb 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 p+Pb 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 p+Pb collisions.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
title_short Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
title_full Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
title_fullStr Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
title_full_unstemmed Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<SUB>NN</SUB></i> = 5.02 TeV with the ATLAS detector
title_sort measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at √<i>s<sub>nn</sub></i> = 5.02 tev with the atlas detector
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/79342
https://arxiv.org/abs/1508.00848
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