Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector

Measurements of the centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead (p +Pb) collisions and the jet cross-section in √s= 2.76 TeV proton–proton collisions are presented. These quantities are measured in datasets corresponding to an in...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
Física
Medición
proton-proton collisions
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79990
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79990
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
proton-proton collisions
ATLAS detector
spellingShingle Ciencias Exactas
Física
Medición
proton-proton collisions
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
topic_facet Ciencias Exactas
Física
Medición
proton-proton collisions
ATLAS detector
description Measurements of the centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead (p +Pb) collisions and the jet cross-section in √s= 2.76 TeV proton–proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb<sup>−1</sup> and 4.0 pb<sup>−1</sup>, respectively, recorded with the ATLAS detector at the Large Hadron Collider in 2013. The p+Pb collision centrality was characterised using the total transverse energy measured in the pseudorapidity interval −4.9 < η < −3.2 in the direction of the lead beam. Results are presented for the double-differential per-collision yields as a function of jet rapidity and transverse momentum (p<sub>T</sub>) for minimum-bias and centrality-selected p+Pb collisions, and are compared to the jet rate from the geometric expectation. The total jet yield in minimum-bias events is slightly enhanced above the expectation in a p<sub>T</sub>-dependent manner but is consistent with the expectation within uncertainties. The ratios of jet spectra from different centrality selections show a strong modification of jet production at all p<sub>T</sub> at forward rapidities and for large p<sub>T</sub> at mid-rapidity, which manifests as a suppression of the jet yield in central events and an enhancement in peripheral events. These effects imply that the factorisation between hard and soft processes is violated at an unexpected level in proton–nucleus collisions. Furthermore, the modifications at forward rapidities are found to be a function of the total jet energy only, implying that the violations may have a simple dependence on the hard parton–parton kinematics.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
title_short Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
title_full Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
title_fullStr Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
title_full_unstemmed Centrality and rapidity dependence of inclusive jet production in √s<sub>NN</sub>=5.02 TeV proton–lead collisions with the ATLAS detector
title_sort centrality and rapidity dependence of inclusive jet production in √s<sub>nn</sub>=5.02 tev proton–lead collisions with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/79990
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