Search for the QCD critical point with fluctuations of conserved quantities in relativistic heavy-ion collisions at RHIC: an overview

Luo, X.; Xu, N.

doi:10.1007/s41365-017-0257-0

Cited by 423 publications

(352 citation statements)

References 104 publications

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“…Cumulants of a higher order are proportional to increasing powers of the correlation length ξ, and they are considerably more sensitive probes to the proximity of the CP than the variance [4,13], as has been illustrated in a number of model calculations for net baryon and/or net charge fluctuations [9,[14][15][16]. Experimental studies of such fluctuation measures are in progress [17]. This motivates our study of acceptance effects for the higher-order fluctuation measures.…”

Section: Introductionmentioning

confidence: 94%

Binomial acceptance corrections for particle number distributions in high-energy reactions

et al. 2020

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The binomial acceptance correction procedure is studied for particle number distributions detected in high energy reactions in finite regions of the momentum space. We present acceptance correction formulas for scaled variance, skewness, and kurtosis. Our considerations include various specific types of particles -positively or negatively charged, baryons and antibaryons -as well as conserved charges, namely, the net baryon number and electric charge. A simple model with effects of exact charge conservation, namely the Bessel distribution, is studied in some detail where effects of multiparticle correlations are present. The accuracy of the binomial filter is studied with UrQMD model simulations of inelastic proton-proton reactions. Binomial acceptance correction procedure works well when used inside a small region of phase space as well as for certain efficiency corrections, in particular for constructing net proton fluctuation from net baryon ones. Its performance is less accurate when applied to obtain UrQMD fluctuations in a finite rapidity window from fluctuations in the full 4π space.

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Section: Introductionmentioning

confidence: 94%

Binomial acceptance corrections for particle number distributions in high-energy reactions

et al. 2020

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“…Over the past few years, there have been numerous efforts to explore a quantum chromodynamics (QCD) phase diagram and quark gluon plasma, which are important goals for ultra-relativistic heavy-ion collision experiments [1][2][3][4][5][6][7][8][9]. A QCD phase diagram is characterized by temperature (T ) and the baryon chemical potential (µ B ) [5,10].…”

Section: Introductionmentioning

confidence: 99%

Nuclear system size scan for freeze-out properties in relativistic heavy-ion collisions by using a multiphase transport model

Wang

Zhang

2020

Phys. Rev. C

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A system size scan program was recently proposed for the STAR experiments at the Relativistic Heavy Ion Collider (RHIC). In this study, we employ a multiphase transport (AMPT) model for considering the bulk properties at the freeze-out stage for 10 B + 10 B, 12 C + 12 C, 16 O + 16 O, 20 Ne + 20 Ne, 40 Ca + 40 Ca, 96 Zr + 96 Zr, and 197 Au + 197 Au collisions at RHIC energies √ sNN of 200, 20, and 7.7 GeV. The results for 197 Au + 197 Au collisions are comparable with those of previous experimental STAR data. The transverse momentum pT spectra of charged particles (π ± , K ± , p, andp) at the kinetic freeze-out stage, based on a blast-wave model, are also discussed. In addition, we use a statistical thermal model to extract the parameters at the chemical freeze-out stage, which agree with those from other thermal model calculations. It was found that there is a competitive relationship between the kinetic freeze-out parameter T kin and the radial expansion velocity βT , which also agrees with the STAR or ALICE results. We found that the chemical freezeout strangeness potential µs remains constant in all collision systems and that the fireball radius R is dominated by NPart , which can be well fitted by a function of a NPart b with b ≈ 1/3. In addition, we calculated the nuclear modification factors for different collision systems with respect to the 10 B + 10 B system, and found that they present a gradual suppression within a higher pT range from small to large systems.be studied through the transverse momentum (p T ) spectra of the particles.

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“…These are accessible to lattice QCD calculations [4] and are also the most promising observables in the experimental search for the conjectured critical point [5,6] in the phase diagram of QCD that is currently underway with the beam energy scan (BES) program at the Relativistic Heavy Ion Collider (RHIC) [7]. The results on net electric charge [8,9] and net proton-number [10][11][12] fluctuations obtained from the first BES runs at RHIC have not yet provided conclusive evidence for the existence of a critical point.…”

Section: Introductionmentioning

confidence: 99%

Skewness and kurtosis of net baryon-number distributions at small values of the baryon chemical potential

et al. 2017

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Search for the QCD critical point with fluctuations of conserved quantities in relativistic heavy-ion collisions at RHIC: an overview

Cited by 423 publications

References 104 publications

Binomial acceptance corrections for particle number distributions in high-energy reactions

Binomial acceptance corrections for particle number distributions in high-energy reactions

Nuclear system size scan for freeze-out properties in relativistic heavy-ion collisions by using a multiphase transport model

Skewness and kurtosis of net baryon-number distributions at small values of the baryon chemical potential

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