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Measurements of particle production in proton-nucleus collisions provide a reference to disentangle final state effects, i.e. signatures of the formation of a deconfined hot medium, from initial state effects, already present in cold…

Nuclear Experiment · Physics 2015-06-19 Alberica Toia

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 of identified particle production as a function of event multiplicity is a key tool for understanding the similarities and differences among different colliding systems. Now for the first time, we can investigate how particle…

Nuclear Experiment · Physics 2021-09-28 Jacazio Nicolò

We investigate the multiplicity dependence of the transverse momentum $p_T$ spectra of hadrons produced in high-energy collisions. We propose that the partonic distribution be parameterized by its non-extensive entropy and the parton…

High Energy Physics - Phenomenology · Physics 2024-07-10 L. S. Moriggi , G. S. Ramos , M. V. T. Machado

The pp collisions have been studied for a long time, however, there are still some effects which are not completely understood, such as the long range angular correlations and the flow patterns in high multiplicity events, which were…

High Energy Physics - Phenomenology · Physics 2015-06-24 Eleazar Cuautle , Antonio Ortiz , Guy Paic

Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. These correlations are examined as a function of rapidity and…

Nuclear Experiment · Physics 2025-11-14 ALICE Collaboration

The pseudorapidity densities of charged particles and inclusive photons produced in high energy nuclear collisions are essential observables to characterise the global properties of the collisions, such as the achieved energy density, and…

Nuclear Experiment · Physics 2022-11-15 Abhi Modak

Measurements of the sphericity of primary charged particles in minimum bias proton--proton collisions at $\sqrt{s}=0.9$, 2.76 and 7 TeV with the ALICE detector at the LHC are presented. The observable is linearized to be collinear safe and…

High Energy Physics - Experiment · Physics 2017-04-18 ALICE Collaboration

The increase of hard probe production as a function of the charged particle multiplicity in proton-proton and proton-lead collisions is considered to be an interesting observable for the study of multiple parton interactions. In the present…

Nuclear Experiment · Physics 2018-08-06 Anisa Khatun

This letter reports measurements which characterize the underlying event associated with hard scatterings at mid-pseudorapidity ($|\eta|<0.8$) in pp, p$-$Pb and Pb$-$Pb collisions at centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm…

Nuclear Experiment · Physics 2023-10-02 ALICE Collaboration

Nuclear matter under extreme conditions can be investigated in ultra-relativistic heavy-ion collisions. The measurement of transverse momentum distributions and yields of identified particles is a fundamental step in understanding…

Nuclear Experiment · Physics 2016-11-23 Maria Vasileiou

The study of the sphericity of primary charged particles in minimum bias proton-proton collisions at 0.9, 2.76 and 7 TeV with the ALICE detector at the LHC is presented. The mean sphericity as a function of multiplicity is reported for…

High Energy Physics - Experiment · Physics 2019-08-13 Antonio Ortiz

The production of charged pions, kaons and (anti)protons has been measured at mid-rapidity ($-0.5 < y < 0$) in p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV using the ALICE detector at the LHC. Exploiting particle identification…

Nuclear Experiment · Physics 2016-08-03 ALICE Collaboration

We investigate properties of jets in proton-proton collisions using two-particle angular correlations. By choosing an analysis approach based on two-particle angular correlations, also the properties of low-energetic jets can be accessed.…

High Energy Physics - Experiment · Physics 2019-08-13 Eva Sicking

An analysis of the high-multiplicity triggered pp data at $\sqrt{s}$ = 13 TeV, obtained with the ALICE detector, is carried out to study the event-by-event fluctuations of mean transverse momentum ($\langle p_{\rm T}\rangle$) using a…

High Energy Physics - Experiment · Physics 2024-10-10 Bushra Ali

The production of charged multi-strange particles is studied with the ALICE experiment at the CERN LHC. Measurements of the central rapidity yields of $\Xi^-$ and $\Omega^-$ baryons, as well as their antiparticles, are presented as a…

High Energy Physics - Experiment · Physics 2019-08-13 D. D. Chinellato

Event-shape observables measured using charged particles in inclusive $Z$-boson events are presented, using the electron and muon decay modes of the $Z$ bosons. The measurements are based on an integrated luminosity of $1.1 {\rm fb}^{-1}$…

High Energy Physics - Experiment · Physics 2016-08-10 ATLAS Collaboration

The striking resemblance of high multiplicity proton-proton (pp) collisions at the LHC to heavy ion collisions challenges our conventional wisdom on the formation of the Quark-Gluon Plasma (QGP). A consistent explanation of the collectivity…

High Energy Physics - Phenomenology · Physics 2021-08-30 Liang Zheng , Guang-Hui Zhang , Yun-Fan Liu , Zi-Wei Lin , Qi-Ye Shou , Zhong-Bao Yin

An overview of recent ALICE results aimed to understand collective phenomena in Pb-Pb collisions at the LHC is presented. These include the centrality dependence of the transverse momentum ($p_{\rm T}$) distributions of charged pions,…

High Energy Physics - Experiment · Physics 2017-10-16 Omar Vázquez

One of the main goals in the study of hadronic interactions at LHC energies is the attempt to characterize the mechanisms involved in particle production in different regimes. The charged-particle multiplicity is one of the most interesting…

High Energy Physics - Experiment · Physics 2024-04-08 Alek Hutson