Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10642
Title: Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at ?s=7 TeV
Authors: Karapınar, Güler
CMS Collaboration
Publisher: Springer Verlag
Abstract: Characteristics of multi-particle production in proton-proton collisions at root s = 7 TeV are studied as a function of the charged-particle multiplicity, N (ch). The produced particles are separated into two classes: those belonging to jets and those belonging to the underlying event. Charged particles are measured with pseudorapidity |eta|< 2.4 and transverse momentum p (T)> 0.25 GeV/c. Jets are reconstructed from charged-particles only and required to have p (T)> 5 GeV/c. The distributions of jet p (T), average p (T) of charged particles belonging to the underlying event or to jets, jet rates, and jet shapes are presented as functions of N (ch) and compared to the predictions of the pythia and herwig event generators. Predictions without multi-parton interactions fail completely to describe the N (ch)-dependence observed in the data. For increasing N (ch), pythia systematically predicts higher jet rates and harder p (T) spectra than seen in the data, whereas herwig shows the opposite trends. At the highest multiplicity, the data-model agreement is worse for most observables, indicating the need for further tuning and/or new model ingredients.
URI: https://doi.org/10.1140/epjc/s10052-013-2674-5
https://hdl.handle.net/11147/10642
ISSN: 1434-6044
1434-6052
Appears in Collections:Rectorate / Rektörlük
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Show full item record



CORE Recommender

SCOPUSTM   
Citations

28
checked on Mar 22, 2024

WEB OF SCIENCETM
Citations

28
checked on Mar 27, 2024

Page view(s)

116
checked on Mar 25, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.