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arXiv · 2007.04947

Forward-backward multiplicity and momentum correlations in $pp$ collisions at LHC energies

Mitali Mondal·Joyati Mondal·Somnath Kar·Argha Deb·Premomoy Ghosh
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Abstract

Charged-particle multiplicity and summed values of the transverse momentum ($p_{\rm T}$) have been utilized for estimating forward-backward (FB) correlation strength for EPOS3 simulated proton-proton ($pp$) events with and without hydrodynamical evolution of particles at center-of-mass energies $\sqrt{s}$ = 0.9, 2.76, and 7 TeV for different pseudorapidity window width ($\delta\eta$) and gap ($\eta_{gap}$) between the FB windows. We have studied the variation of FB correlation strength with $\eta_{gap}$, $\delta\eta$, $\sqrt{s}$, $p_{\rm T}$ cuts and multiplicity classes. Results are compared with the corresponding ALICE and ATLAS data. EPOS3 model qualitatively reproduces the overall variation of correlation strength of the LHC data. However, quantitative agreement is better for $pp$ events, generated using EPOS3 with hydrodynamical evolution of particles, with ATLAS data.

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Mitali Mondal, Joyati Mondal, Somnath Kar, Argha Deb, Premomoy Ghosh. 2020-07-09. Forward-backward multiplicity and momentum correlations in $pp$ collisions at LHC energies. https://doi.org/10.1103/physrevd.102.014033

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