To investigate event-by-event fluctuations of mean transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV with PYTHIA8 and HERWIG7 models

• DOI: 10.48550/arxiv.2502.14322
• Publication Date: 2025-02-20
• Authors: Subhadeep Roy; Tanu Gahlaut; Sadhana Dash
• Keywords: Momentum (technical analysis)

Estimations of event-by-event mean transverse momentum ($\langle p_{\rm T} \rangle$) fluctuations are reported in terms the integral correlator, $\langle \Delta T}\rangle$, and skewness event-wise \rangle$ distribution proton$-$proton (pp) collisions at $\sqrt{s}=13$ TeV with Monte Carlo event generators PYTHIA8 HERWIG7. The final-state charged particles ($p_{\rm T}$) pseudorapidity ($\eta$) ranges $0.15 \leq T}\leq 2.0$ GeV/$c$ $|\eta| 0.8$ were considered for investigation. is observed to follow distinct decreasing trends average particle multiplicity N_{\rm ch} models. Furthermore, both models yield positive finite low-multiplicity events. additionally studied using spherocity estimator ($S_{\rm 0}$) comprehend relative contributions from hard scattering (jets) other soft processes fluctuations. Comparing model predictions would enhance our understanding fluctuation dynamics pp collisions, establishing a crucial baseline studying non-trivial heavy-ion collisions.