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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:31 |
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Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Global event observables in forward physics at LHCb. Predictions of Monte Carlo event generators for proton-proton collisions at sqrt{s} = 7 TeV.
Authors:
Alexandru ENE (1,2), Alexandru JIPA (2)
*
Affiliation:
1) Department of Elementary Particle Physics, "Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH)
2) Doctoral School of Physics, Faculty of Physics of the University of Bucharest
E-mail
alexandru.catalin.ene@cern.ch
Keywords:
event generators, phenomenological models, QCD.
Abstract:
As perturbative QCD calculations can not be applied to partonic interactions which take place at low momentum transfer squared scales, known as “soft” processes, we rely on phenomenological models and effective theories for the description of such processes. A large part of particle production from “soft” processes takes place in the forward rapidity region and so, it may prove useful to test predictions of event generators in this region. In this work we present a comparative study of PYTHIA, EPOS, QGSJET and SIBYLL generators for proton-proton collisions at sqrt{s}=7 TeV in the forward region. The global event observables considered are the charged energy flow, charged-particle distributions, charged-hadron production ratios and V^0 ratios. The generated results are compared to the forward physics measurements from LHCb and TOTEM. In the majority of cases, the observed differences between the predictions and the measurements seem to be explained by the extrapolation from the central rapidity region, in which the generators were tuned.
Acknowledgement:
This work has been financially supported through the following
projects: Proiect IDEI, contract number 56/07.10.2011 and the IFA
project România-CERN, contract number 7/16.03.2016 (LHCb-Ro).
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