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Color reconnection (CR) mechanism in PYTHIA model has been reported to be essential to describe the flow-like collective effect observed in high multiplicity $p$+$p$ and $p$+Pb collisions. In this work, we test this mechanism towards…

High Energy Physics - Phenomenology · Physics 2019-12-12 Sourav Kundu , Bedangadas Mohanty , Dukhishyam Mallick

The strength of forward-backward (FB) multiplicity correlations is measured by the ALICE detector in proton-proton (pp) collisions at $\sqrt{s}=0.9$, 2.76 and 7 TeV. The measurement is performed in the central pseudorapidity region ($|\eta|…

Nuclear Experiment · Physics 2015-07-30 ALICE Collaboration

Correlations and fluctuations between produced particles in an ultra-relativistic nuclear collision remain one of the successor to understand the basics of the particle production mechanism. More differential tools like Forward-Backward…

High Energy Physics - Phenomenology · Physics 2023-06-28 Joyati Mondal , Hirak Koley , Somnath Kar , Premomoy Ghosh , Argha Deb , Mitali Mondal

Forward-backward multiplicity correlations have been studied in electron-positron, proton-proton and more recently in lead-lead collisions. For the proton-proton case, comparison of experimental results to different models reveals an…

High Energy Physics - Phenomenology · Physics 2019-09-04 Eleazar Cuautle , Edgar Dominguez , Ivonne Maldonado

The transverse momentum ($p_{\rm T}$) spectra of inclusive charged particles and its dependence on charged-particle multiplicity are studied in pp collisions at $\sqrt{s}$ = 7 and 13 TeV using the Monte Carlo event generator PYTHIA Monash.…

High Energy Physics - Phenomenology · Physics 2025-02-04 Pranjal Sarma , Banajit Barman , Buddhadeb Bhattacharjee

We study the dynamics of identified, strange, and multi-strange particle production in Pb--Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV using the recently developed Angantyr model, incorporated within PYTHIA8. We show the interplay…

Nuclear Theory · Physics 2022-03-14 Ravindra Singh , Yoshini Bailung , Ankhi Roy

Forward-backward (FB) multiplicity and momentum correlations of produced particles between symmetrically located pseudorapidity ($\eta$) intervals have been studied using the $p$QCD inspired EPOS3 model with and without hydrodynamical…

High Energy Physics - Phenomenology · Physics 2021-10-22 Joyati Mondal , Somnath Kar , Hirak Koley , Srijita Mukherjee , Argha Deb , Mitali Mondal

Increasingly, with the data collected at the LHC we are confronted with the possible existence of flow in pp collisions. In this work we show that PYTHIA 8 produces flow-like effects in events with multiple hard subcollisions due to color…

High Energy Physics - Phenomenology · Physics 2013-08-08 Antonio Ortiz , Peter Christiansen , Eleazar Cuautle , Ivonne Maldonado , Guy Paic

Underlying events dominate most of the hadronic activity in p$-$p collisions and are spanned from perturbative to non-perturbative QCD, having a sensitivity ranging from the multi-scale to very low-x scale physics. A detailed understanding…

High Energy Physics - Phenomenology · Physics 2022-09-07 Krishna Kumar , Sadhana Dash

A study of two-particle differential number ($B$) and transverse momentum ($P_{2}^\mathrm{CD}$) balance functions in photon-proton ($\gamma p$) and proton-proton (pp) collisions at $\sqrt{s}=$ 5.36 TeV is presented. The analysis focuses on…

Nuclear Experiment · Physics 2026-02-25 Subash Chandra Behera , Dukhishyam Mallick

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…

High Energy Physics - Phenomenology · Physics 2020-07-29 Mitali Mondal , Joyati Mondal , Somnath Kar , Argha Deb , Premomoy Ghosh

Nonstatistical fluctuation in pseudorapidity ($\eta$), azimuthal ($\phi$), and pseudorapidity-azimuthal ($\eta-\phi$) distribution spectra of primary particles of PYTHIA Monash (default) generated $pp$ events at $\sqrt{s}=$ 2.76, 7, and 13…

High Energy Physics - Phenomenology · Physics 2019-03-06 Buddhadeb Bhattacharjee , Pranjal Sarma

We present an updated version of the QCD-based colour reconnection model in PYTHIA8, where we constrain the range in impact parameter for which reconnections are allowed. In this way, we can introduce more realistic colour reconnections in…

High Energy Physics - Phenomenology · Physics 2023-09-20 Leif Lönnblad , Harsh Shah

New predictions regarding the role of color flow in high energy Quantum Chromodynamics (QCD) processes have emerged in the last decade. In particular, the role of color flow is now being explored through many different observables; one such…

High Energy Physics - Experiment · Physics 2018-06-21 Joseph D. Osborn

Recent observations of quark-gluon plasma (QGP) like signatures in high multiplicity proton-proton (pp) collisions, have compelled the heavy-ion physics community to re-examine small collision systems for proper baseline studies.…

High Energy Physics - Phenomenology · Physics 2025-02-11 Aswathy Menon Kavumpadikkal Radhakrishnan , Suraj Prasad , Sushanta Tripathy , Neelkamal Mallick , Raghunath Sahoo

The study and understanding of the details of proton-proton collisions is important since they are the benchmark for the comparison with heavy ion results. In the present work we have studied the $\Delta\eta\Delta\phi$ correlations as a…

High Energy Physics - Phenomenology · Physics 2015-01-29 Edgar Perez , Guy Paic , Antonio Ortiz , Eleazar Cuautle

Forward-backward correlation strength ($b$) as a function of pesudorapidity intervals for experimental data from $p+\bar{p}$ non-singly diffractive collisions are compared to PYTHIA and PHOJET model calculations. The correlations are…

High Energy Physics - Experiment · Physics 2015-06-04 Ajay Kumar Dash , Durga Prasad Mahapatra , Bedangadas Mohanty

The PYTHIA Monte Carlo (PMC) has been applied broadly to simulations of high-energy $p$-$p$ and $p$-$\bar p$ collisions. The PMC is based on several assumptions, such as that most hadrons result from jet production (multiple parton…

High Energy Physics - Phenomenology · Physics 2019-05-22 Thomas A. Trainor

We report on a study of color coherence effects in ppbar collisions at a center of mass energy sqrt(s)=1.8 TeV. The data were collected with the D0 detector during the 1992-1993 run of the Fermilab Tevatron Collider. We observe the presence…

High Energy Physics - Experiment · Physics 2008-11-26 D0 Collaboration , B. Abbott et al

Quarkonia production in hadronic collisions is far from being understood as none of the existing models can correctly describe the wealth of available data. In particular, LHCb and CMS experiments have reported that PYTHIA 8 cannot…

High Energy Physics - Phenomenology · Physics 2025-06-19 Lizardo Valencia Palomo
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