TY - JOUR
T1 - Properties of jet fragmentation using charged particles measured with the ATLAS detector in pp collisions at root s=13 TeV
AU - Aaboud, M.
AU - Aad, G.
AU - Abbott, B.
AU - Abdinov, O.
AU - Abeloos, B
AU - Abhayasinghe, DK
AU - Abidi, S.H.
AU - AbouZeid, Ossama Sherif Alexander
AU - Abraham, NL
AU - Abramowicz, H.
AU - de Almeida Dias, Flavia
AU - Dam, Mogens
AU - Ignazzi, Rosanna
AU - Besjes, Geert-Jan
AU - Bajic, Milena
AU - Stark, Simon Holm
AU - Alonso Diaz, Alejandro
AU - Camplani, Alessandra
AU - Hansen, Peter Henrik
AU - Monk, James William
AU - hqz214, hqz214
AU - Hansen, Jørn Dines
AU - Hansen, Jørgen Beck
AU - Galster, Gorm Aske Gram Krohn
AU - Xella, Stefania
AU - Petersen, Troels Christian
AU - Wiglesworth, Graig
AU - ATLAS
PY - 2019/9/19
Y1 - 2019/9/19
N2 - This paper presents a measurement of quantities related to the formation of jets from high-energy quarks and gluons (fragmentation). Jets with transverse momentum 100 GeV 500 MeV and |η|<2.5 are used to probe the detailed structure of the jet. The fragmentation properties of the more forward and the more central of the two leading jets from each event are studied. The data are unfolded to correct for detector resolution and acceptance effects. Comparisons with parton shower Monte Carlo generators indicate that existing models provide a reasonable description of the data across a wide range of phase space, but there are also significant differences. Furthermore, the data are interpreted in the context of quark- and gluon-initiated jets by exploiting the rapidity dependence of the jet flavor fraction. A first measurement of the charged-particle multiplicity using model-independent jet labels (topic modeling) provides a promising alternative to traditional quark and gluon extractions using input from simulation. The simulations provide a reasonable description of the quark-like data across the jet pT range presented in -this measurement, but the gluon-like data have systematically fewer charged particles than the simulation.
AB - This paper presents a measurement of quantities related to the formation of jets from high-energy quarks and gluons (fragmentation). Jets with transverse momentum 100 GeV 500 MeV and |η|<2.5 are used to probe the detailed structure of the jet. The fragmentation properties of the more forward and the more central of the two leading jets from each event are studied. The data are unfolded to correct for detector resolution and acceptance effects. Comparisons with parton shower Monte Carlo generators indicate that existing models provide a reasonable description of the data across a wide range of phase space, but there are also significant differences. Furthermore, the data are interpreted in the context of quark- and gluon-initiated jets by exploiting the rapidity dependence of the jet flavor fraction. A first measurement of the charged-particle multiplicity using model-independent jet labels (topic modeling) provides a promising alternative to traditional quark and gluon extractions using input from simulation. The simulations provide a reasonable description of the quark-like data across the jet pT range presented in -this measurement, but the gluon-like data have systematically fewer charged particles than the simulation.
U2 - 10.1103/PhysRevD.100.052011
DO - 10.1103/PhysRevD.100.052011
M3 - Journal article
SN - 2470-0010
VL - 100
JO - Physical Review D
JF - Physical Review D
IS - 5
M1 - 052011
ER -