Temat: freeze-out - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Understanding of the freeze-out in ultra-relativistic heavy-ion collisions
Autorzy:: Tomašik, B.
Powiązania:: https://bibliotekanauki.pl/articles/147414.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: continuous freeze-out
escape probability
Opis:: I discuss the quantities and effects important for the freeze-out and outline a formalism for the description of continuous decoupling of particles from the fireball. Then, I present a calculation of the scattering rates of pions at various temperatures and argue that it is important to take continuous particle decoupling into account when modelling the collision dynamics.
Źródło:: Nukleonika; 2004, 49,suppl.2; 11-13
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Azimuthally-sensitive interferometry and the source lifetime at RHIC
Autorzy:: Lisa, M.
Powiązania:: https://bibliotekanauki.pl/articles/147422.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: interferometry
HBT
heavy-ion collisions
freeze-out
Opis:: Pion interferometry (HBT) measurements relative to the reaction plane provide an estimate of the transverse source anisotropy at freeze-out, which probes the system dynamics and evolution duration. Measurements by the STAR Collaboration indicate that the source is extended increasingly out-of-plane with increasing impact parameter, suggesting a short evolution duration roughly consistent with estimates based on azimuthally-integrated HBT measurements.
Źródło:: Nukleonika; 2004, 49,suppl.2; 71-76
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Resonance production in heavy ion collisions
Autorzy:: Markert, Ch.
Powiązania:: https://bibliotekanauki.pl/articles/146392.pdf
Data publikacji:: 2004
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: resonance
strangeness
baryon
freeze-out
lifetime
fireball
Opis:: Resonances and their decay products may interact strongly with the hadrons in the fireball medium from the time of chemical freeze-out until the system breaks up at kinetic freeze-out. In order to try to further our understanding of the evolution and expansion of this hot and dense medium we compare resonance particle yields and spectra from elementary p+p and heavy ion collisions.
Źródło:: Nukleonika; 2004, 49,suppl.2; 119-123
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Freeze-out process with in-medium nucleon mass
Autorzy:: Zschocke, S.
Csernai, L.
Molnar, E.
Manninen, J.
Nyiri, A.
Powiązania:: https://bibliotekanauki.pl/articles/148362.pdf
Data publikacji:: 2006
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: freeze-out
nucleon mass shift
chiral condensate
heavy-ion collision
Opis:: We investigate the kinetic freeze-out scenario of a nucleon gas through a finite layer. The in-medium mass modification of nucleons and its impact on the freeze-out process is studied. A considerable modification of the thermodynamical parameters temperature, flow-velocity, energy density and particle density has been found in comparison with evaluations which use a constant vacuum nucleon mass.
Źródło:: Nukleonika; 2006, 51,suppl.3; 43-46
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: A statistical model analysis of yields and fluctuations in 200 GeV Au-Au collisions
Autorzy:: Torrieri, G.
Jeon, S.
Rafelski, J.
Powiązania:: https://bibliotekanauki.pl/articles/148435.pdf
Data publikacji:: 2006
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: fluctuations
freeze-out is small
heavy-ion collisions
statistical models
Opis:: We show that the simultaneous measurement of yields and fluctuations is capable of falsifying and constraining the statistical hadronization model. We show how such a measurement can test for chemical non-equilibrium, and distinguish between a high temperature chemically equilibrated freeze-out from a supercooled freeze-out with an oversaturated phase space. We perform a fit, and show that both yields and fluctuations measured at RHIC 200 GeV can be accounted for within the second scenario, with both the light and strange quark phase space saturated significantly above detailed balance. We point to the simultaneous fit of the K/đ fluctuation and the K*/K ratio as evidence that the effect of hadronic re-interactions after freeze-out is small.
Źródło:: Nukleonika; 2006, 51,suppl.3; 99-103
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Freeze-out and anisotropic flow in microscopic models
Autorzy:: Bravina, L.
Tywoniuk, K.
Zabrodin, E.
Burau, G.
Bleibel, J.
Fuchs, Ch.
Faessler, A.
Powiązania:: https://bibliotekanauki.pl/articles/148598.pdf
Data publikacji:: 2006
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: ultrarelativistic heavy-ion collisions
elliptic flow
freeze-out of particles
Monte-Carlo quark-gluon string model
Opis:: It appears that in microscopic calculations hadrons are continuously emitted from the whole reaction volume. Different species decouple at different times. At RHIC energies significant fractions of both mesons and baryons are emitted from the surface region within the first two fm/c. The hadrons contribute differently to the formation and evolution of the anisotropic flow, which can be decomposed into three components: (i) flow created by hadrons emitted from the surface at the onset of the collision; (ii) flow produced by jets; (iii) hydrodynamic flow. Due to these features, e.g., the elliptic flows of mesons and baryons have different transverse momentum dependences. Comparison with experimental data reveals that centrality, rapidity, and transverse momentum dependences of the anisotropic flow are reproduced, at least qualitatively, by the microscopic models.
Źródło:: Nukleonika; 2006, 51,suppl.3; 3-6
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja