Measurement Of İnclusive Very Forward Jet Cross Sections İn Proton-Lead Collisions At Snn????Snn = 5.02 Tev
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
The CMS Collaboration
Erişim Hakkı
Özet
Measurements of di erential cross sections for inclusive very forward jet production in proton-lead collisions as a function of jet energy are presented. The data were collected with the CMS experiment at the LHC in the laboratory pseudorapidity range --6:6 < < --5:2. Asymmetric beam energies of 4TeV for protons and 1.58TeV per nucleon for Pb nuclei were used, corresponding to a center-of-mass energy per nucleon pair of p sNN = 5:02TeV. Collisions with either the proton (p+Pb) or the ion (Pb+p) traveling towards the negative hemisphere are studied. The jet cross sections are unfolded to stable-particle level cross sections with pT & 3 GeV, and compared to predictions from various Monte Carlo event generators. In addition, the cross section ratio of p+Pb and Pb+p data is presented. The results are discussed in terms of the saturation of gluon densities at low fractional parton momenta. None of the models under consideration describes all the data over the full jet-energy range and for all beam con gurations. Discrepancies between the di erential cross sections in data and model predictions of more than two orders of magnitude are observed.
Açıklama
Anahtar Kelimeler
Forward physics, Hadron-Hadron scattering (experiments), Heavy-ion collision, Jets
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
J. High Energ. Phys. 2019, 43 (2019)
