31 July 2018 to 6 August 2018
Maynooth University
Europe/Dublin timezone

Bayesian unfolding of charged particle $p_{\mathrm{T}} $ spectra with ALICE at the LHC

1 Aug 2018, 14:20
20m
Hall C (Arts Bldg.)

Hall C

Arts Bldg.

Talk H. Statistical Methods for Physics Analysis in the XXI Century Statistical Methods for Physics Analysis in the XXI Century

Speaker

Mario Kruger (Johann-Wolfgang-Goethe Univ. (DE))

Description

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 this talk, 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 MC simulations for pp collisions and compare the resulting $\langle p_{\mathrm{T}}\rangle $ of different systems (pp, p--Pb, Pb--Pb) and collision energies.

Primary author

Mario Kruger (Johann-Wolfgang-Goethe Univ. (DE))

Presentation Materials