What to expect when you're expecting: femtoscopy at the LHC

Lisa, M. A.

doi:10.1590/s0103-97332007000600013

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…(see, e.g. [69,70]), supposing that the interferometry radii and the corresponding interferometry volume V int = R out R side R long grow almost linearly with the mean charged particle density dN ch /dη . Despite the fact the scaling hypothesis is often assumed in femtoscopy studies, we believe, that the femtoscopy scales should depend also on geometrical sizes of the colliding ions (see Fig.…”

Section: Femtoscopy Scalesmentioning

confidence: 99%

Femtoscopy scales and particle production in the relativistic heavy ion collisions from Au+Au at 200 AGeV to Xe+Xe at 5.44 ATeV within the integrated hydrokinetic model

Shapoval,

Adzhymambetov,

Sinyukov

2020

Preprint

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The recent results on the main soft observables, including hadron and photon yields and particle number ratios, p T spectra, flow harmonics, as well as the femtoscopy radii, obtained within the integrated hydrokinetic model (iHKM) for high-energy heavy-ion collisions are reviewed and reexamined. The cases of different nuclei colliding at different energies are considered: Au+Au collisions at the top RHIC energy √ s N N = 200 GeV, Pb+Pb collisions at the LHC energies √ s N N = 2.76 TeV and √ s N N = 5.02 TeV, and the LHC Xe+Xe collisions at √ s N N = 5.44 TeV.The effect of the initial conditions and the model parameters, including the utilized equation of state (EoS) for quark-gluon phase, on the simulation results, as well as the role of the final afterburner stage of the matter evolution are discussed. The possible solution of the so-called "photon puzzle" is considered. The attention is also paid to the dependency of the interferometry volume and individual interferometry radii on the initial transverse geometrical size of the system formed in the collision.

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Section: Femtoscopy Scalesmentioning

confidence: 99%

Femtoscopy scales and particle production in the relativistic heavy ion collisions from Au+Au at 200 AGeV to Xe+Xe at 5.44 ATeV within the integrated hydrokinetic model

Shapoval,

Adzhymambetov,

Sinyukov

2020

Preprint

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“…In [25], the freezeout time for central collisions is calculated to be ≈ 12 f m (at T f = 130 f m for RHIC)In [26], the value obtained for the freezeout time is t f = 12 f m/c, however, the temperature distributions can have sizable spreads in the range of ∼ 100−160 M eV . In [27], having the results of [28], it was pointed out that the evolution time to kinetic freezeout -say until T f ≈ 140 M eV is t f ∼ 12 − 14 f m/c in both cases of longitudinal and transverse dynamics; the timescale which is most directly probed by femtoscopy. Nonetheless, from all these scenarios, having a worked out combined scenario from [17] and [25] at our disposal, we take the aforementioned values for the freezeout time and "kinetic" temperature as averaged values for our ansatz: namely < t f >≡ t f = 12 f m and < T f >≡ T f = 120 f m. Such a combined scenario is based on the joint consideartion of these papers.…”

Section: Comparison To the Rhic Datamentioning

confidence: 99%

Sound Waves from Quenched Jets

Khachatryan,

Shuryak

2011

Preprint

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Heavy ion collisions at RHIC/LHC energies are well described by the (nearly ideal) hydrodynamics. Last year this success has been extended to higher angular harmonics, vn, n = 3..9 induced by initial-state perturbations, in analogy to cosmic microwave background fluctuations. Here we use hydrodynamics to study sound propagation emitted by quenched jets. We use the so called "geometric acoustics" to follow the sound propagation , on top of the expanding fireball. The conical waves, known as "Mach cones", turn out to be strongly distorted. We show that large radial flow makes the observed particle spectra to be determined mostlly by the vicinity of their intersection with the fireball's space-like and time-like freezeout surfaces. We further show how the waves modify the freezeout surfaces and spectra. We end up comparing our calculations to the two-particle correlation functions at RHIC, while emphasizing that studies of dijet events observed at LHC should provide much better test of our theory.

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“…It includes the analysis of HBT radii with respect to the reaction plane [30], the physics hidden in the intercept parameter λ of equation ( 3), and a rapidly growing field of non-identical particle correlations. For a recent discussion of extrapolations to the LHC, which goes beyond the generic features mentioned here, we refer to [77].…”

Section: Femtoscopymentioning

confidence: 99%