Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN=5.02 TeV

Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN=5.02 TeV

Detalles Bibliográficos
Parent link:Physical Review C
Vol. 100, iss. 2.— 2019.— [024902, 20 р.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Outros autores: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Babaev A. A. Anton Anatoljevich
Summary:Title screen
The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, ET, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of √sNN=5.02TeV. The huge angular acceptance exploits the fact that the CASTOR calorimeter at −6.6<η<−5.2 is effectively present on both sides of the colliding system because of a switch in the proton-going and lead-going beam directions. This wide acceptance enables the study of correlations between well-separated angular regions and makes the measurement a particularly powerful test of event generators. For minimum bias pPb collisions the maximum value of dET/dη is 22GeV, which implies an ET per participant nucleon pair comparable to that of peripheral PbPb collisions at √sNN=2.76TeV. The increase of dET/dη with centrality is much stronger for the lead-going side than for the proton-going side. The η dependence of dET/dη is sensitive to the η range in which the centrality variable is defined. Several modern generators are compared to these results but none is able to capture all aspects of the η and centrality dependence of the data and the correlations observed between different η regions.
Idioma:inglés
Publicado: 2019
Subjects:
труды учёных ТПУ
электронный ресурс
протон-протонные соударения
пучки
Acceso en liña:https://doi.org/10.1103/PhysRevC.100.024902
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662788

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