Measurement of the underlying event using the Drell-Yan process in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$ - INSPIRE

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Measurement of the underlying event using the Drell-Yan process in proton-proton collisions at $\sqrt{s} = 13~\mathrm{TeV}$

CMS

Collaboration

2016

19 pages

Report number:

CMS-PAS-FSQ-16-008

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

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Abstract:

This article presents a measurement of the underlying event activity, in proton-proton collisions at a centre-of-mass energy of

13~\mathrm{TeV}

, performed using inclusive Z-boson events (

\mathrm{qq} \rightarrow \mu^+\mu^-

) collected by the CMS experiment at the Large Hadron Collider. The analyzed data corresponds to an integrated luminosity of

2.1~\mathrm{fb}^{-1}

. The Underlying event activity is quantified in terms of charged particle multiplicity and their scalar

p_{\rm T}

sum in different topological regions defined with respect to the azimuthal direction of the two muons coming from the decay of the Z-boson. The distributions are unfolded to stable charged-particle level and are compared with prediction from various models at a centre-of-mass energy of

13~\mathrm{TeV}

, as well as with measurements at a centre-of-mass energy of

1.96~\mathrm{TeV}

and

7~\mathrm{TeV}

by the CDF and CMS experiments.

Note:

Preliminary results

Data
p p: scattering
p p: colliding beams
charged particle: multiplicity
charged particle: stability
charged particle: transverse momentum
Z0: leptonic decay
underlying event
CMS
Drell-Yan process

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