Jet Shapes of Isolated Photon-Tagged Jets in Pb-Pb and p p Collisions at ? s N N = 5.02 TeV
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
The CMS Collaboration
Erişim Hakkı
Özet
The modification of jet shapes in Pb-Pb collisions, relative to those in pp collisions, is studied for jets associated with an isolated photon. The data were collected with the CMS detector at the LHC at a nucleonnucleon center-of-mass energy of 5.02 TeV. Jet shapes are constructed from charged particles with track transverse momenta (pT ) above 1 GeV=c in annuli around the axes of jets with pjet T > 30 GeV=c associated with an isolated photon with p? T > 60 GeV=c. The jet shape distributions are consistent between peripheral Pb-Pb and pp collisions, but are modified for more central Pb-Pb collisions. In these central Pb- Pb events, a larger fraction of the jet momentum is observed at larger distances from the jet axis compared to pp, reflecting the interaction between the partonic medium created in heavy ion collisions and the traversing partons.
Açıklama
Anahtar Kelimeler
Quark & gluon jets, Relativistic heavy-ion collisions, Hadron colliders
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
Physical Review Letters 122, 152001 (2019)
