Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at root s=2.76 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10318569" target="_blank" >RIV/00216208:11320/15:10318569 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP09(2015)137" target="_blank" >http://dx.doi.org/10.1007/JHEP09(2015)137</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP09(2015)137" target="_blank" >10.1007/JHEP09(2015)137</a>

Result language
angličtina
Original language name
Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at root s=2.76 TeV
Original language description
A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (vertical bar eta(jet) | < 2) and with transverse momentum 1 <= p(T)(jet) <100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76TeV with the CMS experiment at the LHC. The UE activity is measured as a function of p(T)(jet) T in terms of the average multiplicity and scalar sum of transverse momenta (p(T)) of charged particles, with vertical bar eta vertical bar < 2 and p(T) > 0.5 GeV, in the azimuthal region transverse to the highest p(T) jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. The measurements are compared to previous results at 0.9 and 7TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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