PoS - Proceedings of Science
Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - H. Statistical Methods for Physics Analysis in the XXI Century
Bayesian unfolding of charged particle $p_{\mathrm{T}} $ spectra with ALICE at the LHC
M. Krüger* on behalf of the ALICE collaboration
*corresponding author
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Pre-published on: September 12, 2019
Published on: September 26, 2019
The study of the Quark-Gluon Plasma created in ultrarelativistic heavy-ion collisions at the CERN-LHC is complemented by reference measurements in proton-lead (p--Pb) and proton-proton (pp) collisions, where the effects of multiple-parton interactions and hadronization beyond independent string fragmentation can be investigated. In these proceedings, we present a Bayesian unfolding procedure to reconstruct the correlation between transverse momentum ($ p_{\mathrm{T}}$) spectra of charged particles and the corresponding charged-particle multiplicities $N_{\mathrm{ch}}$. The unfolded spectra are presented in single multiplicity ($\Delta N_{\mathrm{ch}}$ = 1) bins and are used to derive moments of the $p_{\mathrm{T}} $ distributions. We illustrate the unfolding procedure of the $ p_{\mathrm{T}} $ spectra with a Monte Carlo simulation for pp collisions at a centre-of-mass energy of $\sqrt{\mathrm{s}}= 5.02$ TeV.
DOI: https://doi.org/10.22323/1.336.0236
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