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A simulation study of event-by-event mean transverse momentum fluctuations is presented in pp collisions at \(\sqrt{s} = 13\) TeV using the Monte Carlo models PYTHIA8 and HERWIG7. The study was conducted using charged particles within the transverse momentum range \(0.2\le p_\textrm{T} \le 2.0\) GeV/c and a pseudorapidity window of \(|\eta | \le 0.8\) . The models estimate finite positive value of the fluctuations as a function of charged particle multiplicity. Predictions for the skewness of mean transverse momentum distributions are also presented as a function of particle multiplicity for both the models. Additionally, the fluctuations are studied with transverse spherocity to disentangle the contributions from jets and underlying soft processes.

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Simulation Study of Event-by-Event Fluctuations of Mean Transverse Momentum in pp Collisions at \(\sqrt{s}\) = 13 TeV with PYTHIA8 and HERWIG7

  • 会议论文

  • 发表日期：

    2025年

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  • Subhadeep Roy,
  • Tanu Gahlaut,
  • Sadhana Dash

摘要

A simulation study of event-by-event mean transverse momentum fluctuations is presented in pp collisions at \(\sqrt{s} = 13\) TeV using the Monte Carlo models PYTHIA8 and HERWIG7. The study was conducted using charged particles within the transverse momentum range \(0.2\le p_\textrm{T} \le 2.0\) GeV/c and a pseudorapidity window of \(|\eta | \le 0.8\) . The models estimate finite positive value of the fluctuations as a function of charged particle multiplicity. Predictions for the skewness of mean transverse momentum distributions are also presented as a function of particle multiplicity for both the models. Additionally, the fluctuations are studied with transverse spherocity to disentangle the contributions from jets and underlying soft processes.