Hadronization as valon confinement in the course of nuclear-matter cooling

Royzen, I. I.; Chernavskaya, O. D.

doi:10.1134/1.1540672

Cited by 1 publication

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This follows directly from the fact that the experimental value [52] of the ratio N " p aN p decreases along with the impact parameter and reaches its minimum for the central interactions. A simple (and, of course, crude) estimate of the possible effect is evident [50]; it can explain suppression of the antiproton yield approximately by a factor of two due to the " pp-annihilation in the narrow temperature interval T d 5 T 5 T f . This correction was subsequently taken into account.…”

Section: 3mentioning

confidence: 99%

“…M Ã refers to the model suggested and developed in Refs [40 ± 42]. M 1 and M 2 are two versions of our model [50] with h j 1 i 0X5 and 0X7 4 j 2 4 1 (see the text). All the values of D 2 were calculated by the authors in accordance with the cited experimental data (averages over the results obtained by different RHIC collaborations are used).…”

Section: 3mentioning

confidence: 99%

“…chemical equilibrium admixture of `big' particles Ð pions and kaons Ð is taken into account. Fortunately, this hadronic fraction is proven [50] to not exceed 25% and, therefore, this three-component QpK-state can still be considered a gas, 28 although it becomes somewhat more questionable whether this gas is of a quasi-ideal nature. Furthermore, because the temperatures T d and T f follow very shortly one after the other, free scattering starts very quickly after hadronization and, thus, the problem of the baryon ± antibaryon annihilation becomes less acute, although it must be taken into account in considering the AGS/BNL data (but no corrections of the order of magnitude are then expected, see below).…”

Section: 3mentioning

confidence: 99%

“…At the same time, the scenario allowing for an intermediate phase requires concrete definition, and we now present a schematic example of how this approach `works', being applied to the description of the experimental data on production of various hadronic species in the existing accelerator experiments (see Ref. [50] for more details). We have already noted that although the three-component valon ± pion ± kaon medium formed as a result of chiral symmetry breaking is certainly gaseous, it is not a priori guaranteed that this gas is close to the ideal gas in its properties.…”

Section: 3mentioning

confidence: 99%

See 3 more Smart Citations

Color deconfinement and subhadronic matter: phase states and the role of constituent quarks

Royzen¹,

Feinberg²,

Chernavskaya³

2004

Phys.-Usp.

View full text Add to dashboard Cite

Contents 1. Introduction 2. Retrospect, heuristic considerations, and QCD 3. The phase plane: the current outlook 4. Theoretical models 4.1 Lattice calculations; 4.2 Bag model; 4.3 Interim results: what do the theoretical models teach us? 5. Man-made subhadronic matter? 5.1 A general view of the process; 5.2 The direct phase transition scenario, QGP -> H: pro and contra; 5.3 The scenario with two phase transitions, QGP -> QπK -> H: advantages and problems; 5.4 Dilepton (e + e~-pairs) production Concluding remarks ReferencesAbstract. Major aspects of the subhadronic state of nuclear matter populated with deconfined color particles are reviewed. At high and even at rather low nuclear collision energies, this is expected to be a short-term quark-gluon plasma (QGP), but, seemingly, not only this. Emphasis is put on the self-consistency requirement that must be imposed on any phenomenological description of the evolution of a hot and dense nuclear medium as it expands (cools down) to the point where the final scattering of secondary particles starts. The view is argued and analyzed that massive constituent quarks should then play a major role at a certain cooling stage. A hypothesis is discussed regarding the existence of an intermediate stage (a valon plasma), allowing a consistent explanation of data on the mid-rapidity yields of various kinds of hadrons and direct dileptons (e + e -pairs) in high-energy heavy-ion collisions.

show abstract

Section: 3mentioning

confidence: 99%

Section: 3mentioning

confidence: 99%