Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

Velasquez, A. Ortiz; Cuautle, E.; Paić, G.

doi:10.1016/j.nuclphysa.2015.05.010

Cited by 53 publications

(61 citation statements)

References 29 publications

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“…region. As reported earlier both in MC [23] and data [24], the ratio is smaller in the jet region than in the UE region. The max T -dependent ratios receive a large amount of particles from hard Bremsstrahlung gluons produced in ISR/FSR radiation.…”

Section: Pos(lhcp2021)234supporting

confidence: 84%

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

Bencédi¹,

Velasquez²,

Jimenez³

2021

Proceedings of the Ninth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2021)

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In this work we present the production of charged particles associated with high-T trigger particles (8 < trig. T < 15 GeV / ) at mid-pseudorapidity in proton-proton collisions at √ = 5.02 TeV simulated with the PYTHIA 8 Monte Carlo model. The study is performed as a function of the relative transverse activity classifier, T , which is the relative charged-particle multiplicity in the transverse region ( /3 < |Δ | < 2 /3) of the di-hadron correlations, and it is sensitive to the Multi-Parton Interactions. The evolution of the yield of associated particles on both the toward and the away regions with 3 ≤ assoc.

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Section: Pos(lhcp2021)234supporting

confidence: 84%

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

Bencédi¹,

Velasquez²,

Jimenez³

2021

Proceedings of the Ninth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2021)

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“…In the current study we considered the p T ranges: 0.5 < p T < 1.0 GeV/c, 0.3 < p T < 1.5 GeV/c and 0.8 < p T < 2.0 GeV/c to fit the model to the p T distributions of charged pions, kaons and (anti)protons, respectively. The specific selection of the p T ranges mentioned above was successfully applied in our previous studies [36] where the parametrizations, obtained from the fits, described within 10 % the strange and multi-strange hadron p T spectra.…”

Section: Blast-wave Model Fitsmentioning

confidence: 99%

Revealing the source of the radial flow patterns in proton–proton collisions using hard probes

Velasquez¹,

Bencédi²,

Bello³

2017

J. Phys. G: Nucl. Part. Phys.

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In this work, we propose a tool to reveal the origin of the collective-like phenomena observed in proton-proton collisions. We exploit the fundamental difference between the underlying mechanisms, color reconnection (CR) and hydrodynamics, which produce radial flow patterns in Pythia 8 and Epos 3, respectively. Specifically, we proceed by examining the strength of the coupling between the soft and hard components which, by construction, is larger in Pythia 8 than in Epos 3. We study the transverse momentum (p T ) distributions of charged pions, kaons and (anti)protons in inelastic pp collisions at √ s = 7 TeV produced at mid-rapidity. Specific selections are made on an event-by-event basis as a function of the charged particle multiplicity and the transverse momentum of the leading jet (p jet T ) reconstructed using the FastJet algorithm at mid-pseudorapidity (|η| < 1). From our studies, quantitative and qualitative differences between Pythia 8 and Epos 3 are found in the p T spectra when (for a given multiplicity class) the leading jet p T is increased. In addition, we show that for low-multiplicity events the presence of jets can produce radial flow-like behavior. Motivated by our findings, we propose to perform a similar analysis using experimental data from RHIC and LHC.

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“…The understanding of the role of MPI in data is ongoing by means of the so-called mini-jet analysis 125,126 and event shapes. 127,128 To study the relative production of strangeness and compare it with results in minimum-bias pp and Pb-Pb collisions, the ratios to charged pions have been measured as a function of the event multiplicity. 122 Figure 18 shows that both the (Ξ − +Ξ + )/(π + + π − ) and (Ω − +Ω + )/(π + + π − ) ratios increase as a function of the event multiplicity.…”

Section: Light Flavor Production As a Function Of Multiplicity In P-pmentioning

confidence: 99%

Heavy-ion physics at the LHC: Review of Run I results

Bala

Bautista

Bielčíková

et al. 2016

Int. J. Mod. Phys. E

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In this work we review what we consider are, some of the most relevant results of heavy-ion physics at the LHC. This paper is not intended to cover all the many important results of the experiments, instead we present a brief overview of the current status on the characterization of the hot and dense QCD medium produced in the heavy-ion collisions. Recent exciting results which are still under debate are discussed too, leading to intriguing questions like whether we have a real or fake QGP formation in small systems.Comment: 29 pages, 23 figures. To be published in the Focus Issue entitled "Topics in Nonperturbative QCD: Newest development in theory and experiment" in the Int. J. Mod. Phys.

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Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

Cited by 53 publications

References 29 publications

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

Revealing the source of the radial flow patterns in proton–proton collisions using hard probes

Heavy-ion physics at the LHC: Review of Run I results

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