Measurement of the charged-particle multiplicity inside jets from root s=8 TeV pp collisions with the ATLAS detector
Yükleniyor...
Dosyalar
Tarih
2016-06-13
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The number of charged particles inside jets is a widely used discriminant for identifying the quark or gluon nature of the initiating parton and is sensitive to both the perturbative and non-perturbative components of fragmentation. This paper presents a measurement of the average number of charged particles with p(T) > 500 MeV inside high-momentum jets in dijet events using 20.3 fb(-1) of data recorded with the ATLAS detector in pp collisions at root s = 8 TeV collisions at the LHC. The jets considered have transverse momenta from 50 GeV up to and beyond 1.5 TeV. The reconstructed charged-particle track multiplicity distribution is unfolded to remove distortions from detector effects and the resulting charged-particle multiplicity is compared to several models. Furthermore, quark and gluon jet fractions are used to extract the average charged-particle multiplicity for quark and gluon jets separately.
Açıklama
Anahtar Kelimeler
QUARK JETS, GLUON JETS, FRAGMENTATION PROPERTIES, PARTON DISTRIBUTIONS, ENERGY-DEPENDENCE, E+E-ANNIHILATION, EVENTS
Kaynak
European Physical Journal C
WoS Q Değeri
Q1
