Exploring postsaddle nuclear dissipation with light-particle multiplicity at high energy

With many applications in high-energy physics, Deep Learning or Deep Neural Network (DNN) has become noticeable and practical in recent years. In this article, a new technique is presented for modeling the charged particles multiplicity distribution [Formula: see text] of Proton-Proton [Formula: see text] collisions using an efficient DNN model. The charged particles multiplicity n, the total center of mass energy [Formula: see text], and the pseudorapidity [Formula: see text] used as input in DNN model and the desired output is [Formula: see text]. DNN was trained to build a function, which studies the relationship between [Formula: see text]. The DNN model showed a high degree of consistency in matching the data distributions. The DNN model is used to predict with [Formula: see text] not included in the training set. The expected [Formula: see text] had effectively merged the experimental data and the values expected indicate a strong agreement with Large Hadron Collider (LHC) for ATLAS measurement at [Formula: see text], 7 and 8 TeV.

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Light-particle multiplicity accompanying projectile breakup at 20 MeV/nucleon

Physical Review C ◽

10.1103/physrevc.37.1301 ◽

1988 ◽

Vol 37 (3) ◽

pp. 1301-1303 ◽

Cited By ~ 1

Author(s):

R. Vandenbosch ◽

R. C. Connolly ◽

S. Gil ◽

D. D. Leach ◽

T. C. Awes ◽

...

Keyword(s):

Light Particle ◽

Particle Multiplicity

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Freeze-Out Parameters in Heavy-Ion Collisions at AGS, SPS, RHIC, and LHC Energies

Advances in High Energy Physics ◽

10.1155/2015/349013 ◽

2015 ◽

Vol 2015 ◽

pp. 1-20 ◽

Cited By ~ 53

Author(s):

Sandeep Chatterjee ◽

Sabita Das ◽

Lokesh Kumar ◽

D. Mishra ◽

Bedangadas Mohanty ◽

...

Keyword(s):

Transverse Momentum ◽

Heavy Ion Collisions ◽

Heavy Ion ◽

High Energy ◽

Particle Multiplicity ◽

Charged Particle Multiplicity ◽

Ion Collisions ◽

Momentum Distributions ◽

Chemical Freeze ◽

Freeze Out

We review the chemical and kinetic freeze-out conditions in high energy heavy-ion collisions for AGS, SPS, RHIC, and LHC energies. Chemical freeze-out parameters are obtained using produced particle yields in central collisions while the corresponding kinetic freeze-out parameters are obtained using transverse momentum distributions of produced particles. For chemical freeze-out, different freeze-out scenarios are discussed such as single and double/flavor dependent freeze-out surfaces. Kinetic freeze-out parameters are obtained by doing hydrodynamic inspired blast wave fit to the transverse momentum distributions. The beam energy and centrality dependence of transverse energy per charged particle multiplicity are studied to address the constant energy per particle freeze-out criteria in heavy-ion collisions.

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An estimate of the thermodynamic pressure in high-energy collisions

International Journal of Modern Physics A ◽

10.1142/s0217751x1550027x ◽

2015 ◽

Vol 30 (07) ◽

pp. 1550027 ◽

Cited By ~ 3

Author(s):

Abdel Nasser Tawfik

Keyword(s):

Energy Density ◽

Chemical Potential ◽

Lattice Energy ◽

Heavy Ion ◽

Gluon Plasma ◽

High Energy ◽

Order Moment ◽

Particle Multiplicity ◽

The Mean ◽

Thermodynamic Pressure

We introduce a novel approach to estimate the thermodynamic pressure from heavy-ion collisions based on recently measured higher-order moments of particle multiplicities by the STAR experiment. We start with fitting the experimental results in the most-central collisions. Then, we integrate them back to lower ones. For example, we find that the first-order moment, the mean multiplicity, is exactly reproduced from the integral of variance, the second-order moment. Therefore, the zeroth-order moment, the thermodynamic pressure, can be estimated from the integral of the mean multiplicity. The possible comparison between such a kind of pressure (deduced from the integral of particle multiplicity) and the lattice pressure and the relating of Bjorken energy density to the lattice energy density are depending on lattice QCD at finite baryon chemical potential and first-principle estimation of the formation time of the quark–gluon plasma (QGP).

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(Anti-)deuteron production in pp collisions at $$\sqrt{s}=13 \ \text {TeV}$$

The European Physical Journal C ◽

10.1140/epjc/s10052-020-8256-4 ◽

2020 ◽

Vol 80 (9) ◽

Cited By ~ 2

Author(s):

S. Acharya ◽

◽

D. Adamová ◽

A. Adler ◽

J. Adolfsson ◽

...

Keyword(s):

Charged Particle ◽

Formation Mechanism ◽

Bound States ◽

High Energy ◽

Light Nuclei ◽

Particle Multiplicity ◽

Charged Particle Multiplicity ◽

Pp Collisions ◽

Alice Experiment ◽

Deuteron Production

AbstractThe study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of $$\text {(anti-)deuterons}$$ (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at $$\sqrt{s}=13$$ s = 13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity ($${\mathrm {d} N_{ch}/\mathrm {d} \eta } \sim 26$$ d N ch / d η ∼ 26 ) as measured in p–Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p–Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM).

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Target mass dependence of mean slow particle multiplicity in high energy hadron-nucleus interaction

Czechoslovak Journal of Physics ◽

10.1007/bf01596171 ◽

1980 ◽

Vol 30 (9) ◽

pp. 992-995

Author(s):

Dipak C. Ghosh

Keyword(s):

High Energy ◽

Particle Multiplicity ◽

Mass Dependence ◽

Nucleus Interaction ◽

Slow Particle ◽

Target Mass ◽

Energy Hadron

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Correlation between heavy flavour production and multiplicity in pp and p-Pb collisions at high energy in the multi-pomeron exchange model

EPJ Web of Conferences ◽

10.1051/epjconf/201817118003 ◽

2018 ◽

Vol 171 ◽

pp. 18003 ◽

Cited By ~ 2

Author(s):

Grigory Feofilov ◽

Vladimir Kovalenko ◽

Andrei Puchkov

Keyword(s):

String Tension ◽

High Energy ◽

Exchange Model ◽

Pomeron Exchange ◽

Strength Parameter ◽

Wide Energy Range ◽

Particle Multiplicity ◽

Charged Particle Multiplicity ◽

Pp Collisions ◽

Wide Energy

The multiplicity dependence of heavy flavour production in pp-collisions at LHC energies is studied in the framework of the multi-pomeron exchange model. The model is introducing the string-string interaction collectivity effects in pp collisions, which modifies multiplicity and transverse momenta, leading to the non-trivial mean pt vs. multiplicity (〈pt〉Nch − Nch). correlation. The string collectivity strength parameter is fixed by experimental data on multiplicity and transverse momentum correlation in a wide energy range (from ISR to LHC). The particles discrimination is implemented according to Schwinger mechanism taking into account the strong decays of hadron resonances. We demonstrate, that the faster-than-linear growth of the open charm production with the event charged particle multiplicity, observed in experimental pp high energy collisions, can be explained by the modification of the string tension due to the increasing overlap and interaction of quark-gluon strings. The model is extended for p-A interactions and the calculations for p-Pb collisions are performed.

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