Centrality And Pseudorapidity Dependence Of The Transverse Energy Density İn pPb Collisions At ?Snn = 5.02 Tev
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
The CMS Collaboration
Erişim Hakkı
Özet
The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, ET, over 13.2 units of pseudorapidity, ?, for pPb collisions at a center-of-mass energy per nucleon pair of ?s NN = 5.02 TeV. The huge angular acceptance exploits the fact that the CASTOR calorimeter at ?6.6 < ? < ?5.2 is effectively present on both sides of the colliding system because of a switch in the protongoing 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/d? is 22 GeV, which implies an ET per participant nucleon pair comparable to that of peripheral PbPb collisions at ? s NN = 2.76 TeV. The increase of dET/d? with centrality is much stronger for the lead-going side than for the proton-going side. The ? dependence of dET/d? is sensitive to the ? 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 ? and centrality dependence of the data and the correlations observed between different ? regions.
Açıklama
Anahtar Kelimeler
Nucleon induced nuclear reactions, Particle correlations & fluctuations, Relativistic heavy-ion collisions, Hadron colliders
Kaynak
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
Physical Review C 100, 024902 (2019)
