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In this work, the relative Underlying Event (UE) transverse multiplicity activity classifier ($R_{\rm {T}}$) is used to study the strange and multi-strange hadron production in proton-proton collisions. Our study with $R_{\rm {T}}$ would…

高能物理 - 唯象学 · 物理学 2020-10-12 Prabhakar Palni , Arvind Khuntia , Paolo Bartalini

In this work we present the production of charged particles associated with high-$p_{\rm T}$ trigger particles ($8<p_{\rm T}^{\rm trig.}<15$ GeV /$c$) at mid-pseudorapidity in proton-proton collisions at $\sqrt{s}=5.02$\,TeV simulated with…

高能物理 - 唯象学 · 物理学 2021-10-08 Gyula Bencédi , Antonio Ortiz , Antonio Paz

In this work, we systematically investigate the jet associated identified hadron productions of pions, kaons, and protons based on the event topological separation method in proton proton (pp) collisions at $\sqrt{s}=13$ TeV employing the…

高能物理 - 唯象学 · 物理学 2025-12-08 Yuhao Peng , Yan Wu , Xinye Peng , Zhongbao Yin , Liang Zheng

Results for high multiplicity pp and p-Pb collisions at the LHC have revealed that these small collision systems exhibit features of collectivity. To understand the origin of these unexpected phenomena, the relative transverse activity…

高能物理 - 实验 · 物理学 2021-03-15 Sushanta Tripathy

This paper presents the production of charged particles associated with high-$p_{\rm T}$ trigger particles ($8<p_{\rm T}^{\rm trig.}<15$ GeV/$c$) in proton-proton collisions at $\sqrt{s}=5.02$ TeV simulated with PYTHIA 8.244. The study is…

高能物理 - 唯象学 · 物理学 2020-12-10 Gyula Bencédi , Antonio Ortiz , Sushanta Tripathy

In relativistic heavy-ion collisions, the formation of a deconfined and thermalized state of partons, known as quark-gluon plasma (QGP), leads to enhanced production of strange hadrons in contrast to proton-proton (pp) collisions, which are…

高能物理 - 唯象学 · 物理学 2025-04-08 Suraj Prasad , Bhagyarathi Sahoo , Sushanta Tripathy , Neelkamal Mallick , Raghunath Sahoo

Multi-Parton Interactions (MPI) in pp collisions have attracted the attention of the heavy-ion community since they can help to elucidate the origin of collective-like effects discovered in small collision systems at the LHC. In this work,…

高能物理 - 唯象学 · 物理学 2020-10-28 Antonio Ortiz , Antonio Paz , Jose D. Romo , Sushanta Tripathy , Erik A. Zepeda , Irais Bautista

Event classifiers based either on the charged-particle multiplicity or on event topologies, such as spherocity and underlying event, became very useful tools to study collective-like behaviors in small collision systems. However,…

高能物理 - 实验 · 物理学 2023-12-19 Gyula Bencédi

Understanding the origin of collectivity-like signatures in small collision systems is a central open question in high-energy nuclear physics, and two-particle correlation functions offer unique sensitivity to the underlying-event (UE)…

高能物理 - 唯象学 · 物理学 2026-05-29 Subhadeep Roy , Sadhana Dash

Event classifiers based either on the charged-particle multiplicity or the event shape have been extensively used in proton-proton (pp) collisions by the ALICE collaboration at the LHC. The use of these tools became very instrumental since…

高能物理 - 唯象学 · 物理学 2023-04-26 Antonio Ortiz , Arvind Khuntia , Omar Vázquez-Rueda , Sushanta Tripathy , Gyula Bencedi , Suraj Prasad , Feng Fan

Recent measurements in high-multiplicity pp and p-A collisions have revealed that these small collision systems exhibit collective-like behaviour, formerly thought to be achievable only in heavy-ion collisions. To understand the origins of…

高能物理 - 实验 · 物理学 2020-11-03 Sushanta Tripathy

Recent results for high multiplicity pp and p-Pb collisions have revealed that they exhibit heavy-ion-like behaviors. To understand the origin(s) of these unexpected phenomena, event shape observables such as transverse spherocity ($S_{\rm…

高能物理 - 实验 · 物理学 2020-12-29 Sushanta Tripathy

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.…

The production of $\pi^\pm$, ${\rm K}^\pm$, and $(\overline{\rm p})$p is measured in pp collisions at $\sqrt{s}=13$ TeV in different topological regions. Particle transverse momentum ($p_{\rm T}$) spectra are measured in the ``toward'',…

核实验 · 物理学 2023-07-31 ALICE Collaboration

The LHC data have unveiled unexpected features in proton-proton (pp) collisions, namely, collective-like behavior and strangeness enhancement. Originally, these new effects were discovered only in high-multiplicity pp collisions. However,…

高能物理 - 唯象学 · 物理学 2026-03-03 Jesús Eduardo Muñoz Méndez , Antonio Ortiz

The ALICE collaboration recently reported the mean transverse momentum as a function of charged-particle multiplicity for different pp-collisions classes defined based on the "jettiness" of the event. The event "jettiness" is quantified…

高能物理 - 唯象学 · 物理学 2024-01-15 Antonio Ortiz , Lizardo Valencia Palomo , Victor Manuel Minjares Neriz

This study presents a comprehensive analysis of particle production in proton-proton ($pp$) collisions at $\sqrt{s}$ = 7 TeV using Pythia~8 event generator. We investigate the transverse momentum $p_T$ spectra of light charged hadrons…

高能物理 - 唯象学 · 物理学 2024-04-09 Rabia Bashir , Ramoona Shahzadi , M. U. Ashraf

The similarity between small- and large-collision systems is explored using the charged-particle multiplicity in the transverse region, $N^{\rm T}_{\rm ch}$, which is sensitive to the underlying event. Measurements of charged-particle…

核实验 · 物理学 2023-03-13 Antonio Ortiz

A new observable, $S_{T}$, is introduced in terms of the sum of the transverse momentum of charged particles ($\sum_{i} p_{T_{i}}$ ) produced in proton proton (p$-$p) collisions at LHC energies to probe the underlying events (UE). The UE…

高能物理 - 唯象学 · 物理学 2024-03-05 Rahul Verma , Vishu Saini , Basanta Nandi , Sadhana Dash

Measurements of charged-particle production in pp, p$-$Pb, and Pb$-$Pb collisions in the toward, away, and transverse regions with the ALICE detector are discussed. These regions are defined event-by-event relative to the azimuthal…

核实验 · 物理学 2024-01-31 ALICE Collaboration
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