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The jets are the final state manifestation of the hard parton scattering. Since at LHC energies the production of hard processes in proton-proton collisions will be copious and varied, it is important to develop methods to identify them…

High Energy Physics - Experiment · Physics 2009-12-07 Antonio Ortiz , Guy Paic

Transverse spherocity is an event shape observable, which separates the events based on their geometrical shapes. In this work, we use transverse spherocity to study the identified light flavor production in heavy-ion collisions using A…

High Energy Physics - Phenomenology · Physics 2022-06-16 Neelkamal Mallick , Sushanta Tripathy , Raghunath Sahoo

The event-shape and multiplicity dependence of the chemical freeze-out temperature ($T_{\text{ch}}$), freeze-out radius ($R$), and strangeness saturation factor ($\gamma_{s}$) are obtained by studying the particle yields from the PYTHIA8…

High Energy Physics - Phenomenology · Physics 2020-12-11 Rutuparna Rath , Arvind Khuntia , Sushanta Tripathy , Raghunath Sahoo

The UA1 and CDF collaborations have reported the presence of events with a very extended structure of low momentum tracks filling in a uniform way the $\eta-\varphi$ phase space. However, these events have not caused interest with respect…

High Energy Physics - Phenomenology · Physics 2022-05-02 Antonio Ortiz , Guy Paic

The production of heavy quarks (charm and beauty) in high-energy hadronic and nuclear collisions provides an excellent testing ground for the theory of strong interactions and validates models based on quantum chromodynamics (QCD). In this…

High Energy Physics - Phenomenology · Physics 2026-03-25 Aswathy Menon Kavumpadikkal Radhakrishnan , Suraj Prasad , Neelkamal Mallick , Raghunath Sahoo

Transverse Spherocity is an event structure variable which provide an effective way to disentangle the data into hard and soft components of the processes corresponding to events with small and large numbers of multi-parton interactions…

High Energy Physics - Phenomenology · Physics 2023-01-25 Randhir Singh

We present the results for the evolution of transverse momentum spectra for the jetty and underlying parts of events as a function of multiplicity in pp collisions at 13 TeV measured at midrapidity ($\left|\eta\right|<0.8$) using PYTHIA8…

High Energy Physics - Phenomenology · Physics 2020-02-26 Aditya Nath Mishra , Guy Paić

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

We investigate charge balance functions for pion, kaon, and proton pairs in proton-proton (pp) collisions at $\sqrt{s}=13$ TeV using Monte Carlo models, PYTHIA8 and EPOS-LHC, with transverse spherocity to classify event topology and…

High Energy Physics - Experiment · Physics 2026-03-09 Subash Chandra Behera , Arvind Khuntia

Characteristics of multi-particle production in proton-proton collisions at sqrt(s) = 7 TeV are studied as a function of the charged-particle multiplicity, N[ch]. The produced particles are separated into two classes: those belonging to…

High Energy Physics - Experiment · Physics 2013-12-17 CMS Collaboration

In this study, a comprehensive analysis of jets and underlying events as a function of charged particle multiplicity in proton-proton (pp) collisions at a center-of-mass energy of $\sqrt{s} = 7$ TeV is presented. Various Monte Carlo (MC)…

High Energy Physics - Phenomenology · Physics 2024-08-09 Maryam Waqar , Haifa I. Alrebdi , Muhammad Waqas , K. S. Al-mugren , Muhammad Ajaz

We introduce a new class of event shapes to characterize the jet-like structure of an event. Like traditional event shapes, our observables are infrared/collinear safe and involve a sum over all hadrons in an event, but like a jet…

High Energy Physics - Phenomenology · Physics 2015-06-17 Daniele Bertolini , Tucker Chan , Jesse Thaler

The Fragmentation Functions is one of the non-perturbative components of the QCD factorization theorem. They represents the probability of a parton carrying a fraction z of momentum to form into a particular kind of hadron. In this work, we…

High Energy Physics - Phenomenology · Physics 2019-10-09 H. Bello Martínez , R. J. Hernández-Pinto , I. León Monzón

Transverse spherocity is an event shape observable having a very unique capability to separate the events based on their geometrical shapes. Recent results from experiments at the LHC suggest that transverse spherocity is an important event…

High Energy Physics - Phenomenology · Physics 2021-04-05 Neelkamal Mallick , Raghunath Sahoo , Sushanta Tripathy , Antonio Ortiz

This paper reports the first measurement of the transverse momentum ($p_{\mathrm{T}}$) spectra of primary charged pions, kaons, (anti)protons, and unidentified particles as a function of the charged-particle flattenicity in pp collisions at…

High Energy Physics - Experiment · Physics 2025-02-03 ALICE Collaboration

Results on the transverse spherocity dependence of light-flavor particle production ($\pi$, K, p, $\phi$, ${\rm K^{*0}}$, ${\rm K}^{0}_{\rm{S}}$, $\Lambda$, $\Xi$) at midrapidity in high-multiplicity pp collisions at $\sqrt{s} = 13$ TeV…

High Energy Physics - Experiment · Physics 2024-06-10 ALICE Collaboration

One of the event shape observables, the transverse spherocity ($S_0$), has been studied successfully in small collision systems such as proton-proton collisions at the LHC as a tool to separate jetty and isotropic events. It has a unique…

High Energy Physics - Phenomenology · Physics 2021-10-11 Neelkamal Mallick , Raghunath Sahoo , Sushanta Tripathy , Antonio Ortiz

The motivation behind exploring jet quenching-like phenomena in small systems arises from the experimental observation of heavy-ion-like behavior of particle production in high-multiplicity proton-proton ($p+p$) collisions. Quantifying the…

High Energy Physics - Phenomenology · Physics 2023-11-14 Hushnud Hushnud , Omveer Singh , Srikanta Kumar Tripathy , Aditya Nath Mishra , Kalyan Dey

We define a new set of observables to probe the structure of the underlying event in hadron collisions. We use the conventional definition of the `transverse region' in jet events and, for a fixed window in jet $p_\perp$, propose to measure…

High Energy Physics - Phenomenology · Physics 2016-06-01 Tim Martin , Peter Skands , Sinead Farrington

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