Properties of ρ(770)0, K*(892), ϕ(1020), ∑(1385)±, Λ(1520) and Ξ(1530)0 resonances in heavy-ion collisions at a center of mass energy of 
	    


	    SNN=4-11GeV
	    
	   and their reconstruction using the MPD detector at NICA

Abstract The short-lived hadronic resonances are used to study properties of the hot and dense medium produced in relativistic heavy-ion collisions. Due to their short lifetimes, the resonance yields and masses measured in the hadronic channels are sensitive to rescattering and regeneration effects in the hadronic phase. The measurement of resonances is foreseen in the physical program of the MPD experiment at NICA in heavy-ion collisions at S N N = 4 - 11 GeV , in the range of energies where extensive measurements of resonances are not experimentally available. In this contribution, we explore the sensitivity of the ρ(770)0, K*(892), ϕ(1020), ∑(1385)±, Λ(1520) and Ξ(1530)0 resonances measured in the hadronic decay channels to different stages of the heavy-ion collisions at NICA energies and report the feasibility studies for the reconstruction of resonances in the MPD setup

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Highlights from PHENIX at RHIC

EPJ Web of Conferences ◽

10.1051/epjconf/201817101003 ◽

2018 ◽

Vol 171 ◽

pp. 01003

Author(s):

Rachid Nouicer

Keyword(s):

Heavy Quark ◽

Heavy Ion Collisions ◽

Meson Production ◽

Heavy Ion ◽

Relativistic Heavy Ion Collisions ◽

Dense Medium ◽

Heavy Flavor ◽

Theoretical Understanding ◽

Rapidity Region ◽

Ion Collisions

Hadrons conveying strange quarks or heavy quarks are essential probes of the hot and dense medium created in relativistic heavy-ion collisions. With hidden strangeness, ϕ meson production and its transport in the nuclear medium have attracted high interest since its discovery. Heavy quark-antiquark pairs, like charmonium and bottomonium mesons, are mainly produced in initial hard scattering processes of partons. While some of the produced pairs form bound quarkonia, the vast majority hadronize into particles carrying open heavy flavor. In this context, the PHENIX collaboration carries out a comprehensive physics program which studies the ϕ meson production, and heavy flavor production in relativistic heavy-ion collisions at RHIC. In recent years, the PHENIX experiment upgraded the detector in installing silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertex tracker (FVTX) at the forward rapidity region. With these new upgrades, the experiment has collected large data samples, and enhanced the capability of heavy flavor measurements via precision tracking. This paper summarizes the latest PHENIX results concerning ϕ meson, open and closed charm and beauty heavy quark production in relativistic heavy-ion collisions. These results are presented as a function of rapidity, energy and system size, and their interpretation with respect to the current theoretical understanding.

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HANBURY-BROWN–TWISS INTERFEROMETRY WITH IDENTICAL BOSONS IN RELATIVISTIC HEAVY ION COLLISIONS: COMPARISONS WITH HADRONIC SCATTERING MODELS

International Journal of Modern Physics E ◽

10.1142/s0218301306003977 ◽

2006 ◽

Vol 15 (01) ◽

pp. 197-236 ◽

Cited By ~ 23

Author(s):

THOMAS J. HUMANIC

Keyword(s):

Heavy Ion Collisions ◽

Center Of Mass ◽

Heavy Ion ◽

Physical Significance ◽

Experimental Results ◽

Relativistic Heavy Ion Collisions ◽

Identical Boson ◽

Ion Collisions

Identical boson Hanbury-Brown–Twiss interferometry as applied to relativistic heavy-ion collisions is reviewed. Emphasis is placed on the use of hadronic scattering models to interpret the physical significance of experimental results. Interferometric studies with center-of-mass energies from <1 GeV/nucleon up to 5500 GeV/nucleon are considered.

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Heavy flavour production at RHIC and LHC

EPJ Web of Conferences ◽

10.1051/epjconf/201817104001 ◽

2018 ◽

Vol 171 ◽

pp. 04001 ◽

Cited By ~ 1

Author(s):

Gian Michele Innocenti

Keyword(s):

Energy Loss ◽

Quark Matter ◽

Heavy Ion Collisions ◽

Heavy Ion ◽

Experimental Results ◽

Relativistic Heavy Ion Collisions ◽

Dense Medium ◽

Medium Energy ◽

Ion Collisions ◽

Flavour Physics

In this proceedings, I present selected experimental results on heavy-flavour production at RHIC and at the LHC, which were presented at the Strangeness in Quark Matter 2017 conference. I will present a brief introduction to the heavy-flavour physics in heavy ion collisions and I will focus on recents measurements of in-medium energy loss and and collective properties of heavy-flavour particles, which provided important information on the mechanisms of heavy flavour interaction with the hot and dense medium created in ultra-relativistic heavy-ion collisions.

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JET RESULTS AND JET RECONSTRUCTION TECHNIQUES IN p+p AND THEIR PROSPECTS IN HEAVY-ION COLLISIONS IN ATLAS

International Journal of Modern Physics E ◽

10.1142/s0218301311019842 ◽

2011 ◽

Vol 20 (07) ◽

pp. 1545-1550

Author(s):

◽

MARTIN SPOUSTA

Keyword(s):

Cross Sections ◽

Heavy Ion Collisions ◽

Center Of Mass ◽

Heavy Ion ◽

Proton Proton ◽

Center Of Mass Energy ◽

Ion Collisions ◽

Expected Performance ◽

Jet Shapes ◽

Jet Cross Sections

We present the measurement of jet production performed with the ATLAS detector in proton-proton collisions at center-of-mass energy of 7 TeV, using an integrated luminosity of 17 nb−1. We show the inclusive jet cross sections and jet shapes. The expected performance and strategy for the jet reconstruction in heavy ion collisions is also discussed.

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Measurement of the neutral and charged K* (892) mesons in the MPD experiment at NICA

EPJ Web of Conferences ◽

10.1051/epjconf/201922202005 ◽

2019 ◽

Vol 222 ◽

pp. 02005

Author(s):

Dmitry Ivanishchev ◽

Dmitry Kotov ◽

Evgeny Kryshen ◽

Mikhail Malaev ◽

Victor Riabov ◽

...

Keyword(s):

Heavy Ion Collisions ◽

Meson Production ◽

Feasibility Studies ◽

Heavy Ion ◽

Relativistic Heavy Ion Collisions ◽

Experimental Setup ◽

Parton Energy Loss ◽

Ion Collisions ◽

Systematic Uncertainties ◽

Charged Pions

Measurements of K*(892) meson production provide the means to study properties of relativistic heavy-ion collisions. Because of their short lifetimes, the charged and neutral K*(892) mesons provide information about the properties of the late hadronic phase due to the presence of rescattering and regeneration effects that can modify resonance yields. The K*(892) mesons can also be used to study the various mechanisms that shape particle transverse momentum (pT) spectra, including the collective flow, in-medium parton energy loss and recombination. Measurement of neutral K*(892) mesons requires reconstruction of the charged pions and kaons originating from the primary vertex. At the same time, the measurement of charged K*(892) mesons involves reconstruction of the weakly decaying Ks mesons. Simultaneous measurement of the two particles is a way to minimize systematic uncertainties of the corresponding physical studies. We present results of feasibility studies for measurement of the charged and neutral K*(892) mesons in the MPD experimental setup in heavy-ion collisions at NICA energies. Results are obtained using full-scale Monte Carlo simulations of the experimental setup.

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Reconstruction of Photon Conversions in the MPD Experiment

Particles ◽

10.3390/particles4010008 ◽

2021 ◽

Vol 4 (1) ◽

pp. 55-62

Author(s):

Evgeny Kryshen ◽

Dmitry Ivanishchev ◽

Dmitry Kotov ◽

Mikhail Malaev ◽

Victor Riabov ◽

...

Keyword(s):

Heavy Ion Collisions ◽

Feasibility Studies ◽

Heavy Ion ◽

Dense Medium ◽

Thermal Photon ◽

Ion Collisions ◽

Electron Positron ◽

The Future ◽

Photon Conversion ◽

Detector Material

Spectra of thermal photons carry important information on the temperature of the hot and dense medium produced in heavy ion collisions. Photons can be measured via their conversion into electron-positron pairs in the detector material. In this contribution, challenges in the photon reconstruction are discussed and feasibility studies on photon conversion measurements in the future multipurpose detector (MPD) experiment at NICA are presented. The obtained results indicate good prospects for thermal photon measurements.

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RELATIVISTIC HEAVY-ION COLLISIONS: RECENT RESULTS FROM RHIC

International Journal of Modern Physics A ◽

10.1142/s0217751x04019019 ◽

2004 ◽

Vol 19 (07) ◽

pp. 1111-1118

Author(s):

D. HARDTKE

Keyword(s):

Energy Loss ◽

Nuclear Matter ◽

Heavy Ion Collisions ◽

Heavy Ion ◽

High Energy ◽

Jet Quenching ◽

Relativistic Heavy Ion Collisions ◽

Dense Medium ◽

Relativistic Heavy Ion Collider ◽

Ion Collisions

High energy collisions of heavy nuclei at the Relativistic Heavy-Ion Collider permit the study of nuclear matter at extreme densities and temperatures. Selected experimental highlights from the early RHIC program are presented. Measurements of the total multiplicity in heavy-ion collisions show a surprising similarity to measurements in e+e- collisions after nuclear geometry is taken into account. RHIC has sufficient center-of-mass energy to use large transverse momentum particles and jets as a probe of the nuclear medium. Signatures of "jet quenching" due to radiative gluon energy loss of fast partons in a dense medium are observed for the first time at RHIC. In order to account for this energy loss, initial energy densities of 30-100 times normal nuclear matter density are required.

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Transport Model Approach to Λ and Λ¯ Polarization in Heavy-Ion Collisions

Symmetry ◽

10.3390/sym13101852 ◽

2021 ◽

Vol 13 (10) ◽

pp. 1852

Author(s):

Larissa V. Bravina ◽

Kyrill A. Bugaev ◽

Oleksandr Vitiuk ◽

Evgeny E. Zabrodin

Keyword(s):

Nuclear Matter ◽

Heavy Ion Collisions ◽

Transport Model ◽

Center Of Mass ◽

Heavy Ion ◽

Baryon Density ◽

Dense Medium ◽

Interaction Point ◽

Ion Collisions ◽

Dense Nuclear Matter

This paper investigates the symmetry breaking between the polarizations of Λ and Λ¯ hyperons in relativistic collisions of heavy ions at intermediate and low energies. The microscopic transport model UrQMD is employed to study the thermal vorticity of hot and dense nuclear matter formed in non-central Au + Au collisions at center-of-mass energies 7.7≤sNN≤62.4 GeV. The whole volume of an expanding fireball is subdivided into small cubic cells. Then, we trace the final Λ and Λ¯ hyperons back to their last interaction point within a certain cell. Extracting the bulk parameters, such as energy density, net baryon density, and net strangeness of the hot and dense medium in the cell, one can obtain the cell temperature and the chemical potentials at the time of the hyperon emission. To do this, the extracted characteristics have to be fitted to the statistical model (SM) of ideal hadron gas. After that, the vorticity of nuclear matter and polarization of both hyperons are calculated. We found that the polarization of both Λ and Λ¯ increases with decreasing energy of heavy-ion collisions. The stronger polarization of Λ¯ is explained by (i) the slightly different freeze-out conditions of both hyperons and (ii) the different space–time distributions of Λ and Λ¯.

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Exploring Baryon Rich Matter with Heavy-Ion Collisions

Ukrainian Journal of Physics ◽

10.15407/ujpe64.7.583 ◽

2019 ◽

Vol 64 (7) ◽

pp. 583 ◽

Cited By ~ 1

Author(s):

S. Harabasz

Keyword(s):

Center Of Mass ◽

Heavy Ion ◽

State Density ◽

Heavy Nuclei ◽

First Order ◽

Center Of Mass Energy ◽

Ion Collisions ◽

Deconfinement Phase Transition ◽

Ground State Density

Collisions of heavy nuclei at (ultra-)relativistic energies provide a fascinating opportunity to re-create various forms of matter in the laboratory. For a short extent of time (10-22 s), matter under extreme conditions of temperature and density can exist. In dedicated experiments, one explores the microscopic structure of strongly interacting matter and its phase diagram. In heavy-ion reactions at SIS18 collision energies, matter is substantially compressed (2–3 times ground-state density), while moderate temperatures are reached (T < 70 MeV). The conditions closely resemble those that prevail, e.g., in neutron star mergers. Matter under such conditions is currently being studied at the High Acceptance DiElecton Spectrometer (HADES). Important topics of the research program are the mechanisms of strangeness production, the emissivity of matter, and the role of baryonic resonances herein. In this contribution, we will focus on the important experimental results obtained by HADES in Au+Au collisions at 2.4 GeV center-of-mass energy. We will also present perspectives for future experiments with HADES and CBM at SIS100, where higher beam energies and intensities will allow for the studies of the first-order deconfinement phase transition and its critical endpoint.

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