@misc{10481/61695,
year = {2019},
month = {9},
url = {http://hdl.handle.net/10481/61695},
abstract = {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 <pT< 2.5 TeV and pseudorapidity |η|<2.1 from an integrated luminosity of 33 fb−1 of s√=13 TeV proton-proton collisions are reconstructed with the ATLAS detector at the Large Hadron Collider. Charged-particle tracks with pT>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 simulations.},
organization = {We
acknowledge the support of ANPCyT, Argentina; YerPhI,
Armenia; ARC, Australia; BMWFW and FWF, Austria;
ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP,
Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT,
Chile; CAS, MOST and NSFC, China; COLCIENCIAS,
Colombia; MSMT CR, MPO CR and VSC CR, Czech
Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS,
CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF,
and MPG, Germany; GSRT, Greece; RGC, Hong Kong
SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy;
MEXT and JSPS, Japan; CNRST, Morocco; NWO,
Netherlands; RCN, Norway; MNiSW and NCN, Poland;
FCT, Portugal; MNE/IFA, Romania; MES of Russia and
NRC KI, Russian Federation; JINR; MESTD, Serbia;
MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF,
South Africa; MINECO, Spain; SRC and Wallenberg
Foundation, Sweden; SERI, SNSF and Cantons of Bern
and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey;
STFC, United Kingdom; DOE and NSF, United States of
America. In addition, individual groups and members have
received support from BCKDF, CANARIE, CRC and
Compute Canada, Canada; COST, ERC, ERDF, Horizon
2020, and Marie Skłodowska-Curie Actions, European
Union; Investissements d’ Avenir Labex and Idex, ANR,
France; DFG and AvH Foundation, Germany; Herakleitos,
Thales and Aristeia programs cofinanced by EU-ESF and the
Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA
Programme Generalitat de Catalunya, Spain; The Royal
Society and Leverhulme Trust, United Kingdom.},
publisher = {American Physical Society},
title = {Properties of jet fragmentation using charged particles measured with the ATLAS detector in pp collisions at s√=13 TeV},
doi = {10.1103/PhysRevD.100.052011},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Atlas Collaboration},
}