Terms: Quark Gluon Plasma (157000), quark gluon matter (449), quark gluon phase (262), bulk QCD (188), soft QCD (292), hard QCD (1480),
Terms: big bang nucleosynthesis (70300),
Terms: quark gluon liquid (113), quark matter (105000), gluon liquid (160),
Physicists create a 'perfect' way to study the Big Bang
Terms: quark-quark (78600), gluon-gluon (1520), quark-quark scattering (384), gluon distribution (9800), hard diffractive (630), hard diffraction (994), prompt gluons (25),
Terms: quark (6700000), quarks (1770000), gluon (1380000), gluons (305000),
Terms: quark hadron transition (328), quark hadron threshold (0), quark hadron (6880), color deconfined (77), charmonium suppression (348), enhances strangeness (12),
Terms: quark masses (77100), new state of matter (45700), early evolution of the universe (734), ordinary nuclear matter (239),
New State of Matter created at CERN
A New State of Matter - Science
Terms: Relativistic Heavy Ion Collider (104000), Large Hadron Collider (238000),
Terms: energy density (1150000), hadronization (50300), bose einstein interferometry (139), little bang (55000), GeV/fm3 (152), thermal plasma radiation (27), little big bang (585),
Boolean: microseconds AND "big bang" (2740), "energy density" AND quarks AND gluons (1730), (suppress OR suppresses) AND (charmonia OR charmonium) (173), primordial AND (quark OR gluon OR quarks OR gluons) (83700),
In spite of its many facets the resulting picture is simple: the two colliding nuclei deposit energy into the reaction zone which materializes in the form of quarks and gluons which strongly interact with each other. This early, very dense state (energy density about 3{4 GeV/fm3, mean particle momenta corresponding to T ª 240 MeV) suppresses the formation of charmonia, enhances strangeness and begins to drive the expansion of the fireball. Subsequently, the "plasma" cools down and becomes more dilute. At an energy density of 1 GeV/fm3 (T ª 170 MeV) the quarks and gluons hadronize and the final hadron abundances are fixed. At an energy density of order 50 MeV/fm3 (T =100{120 MeV) the hadrons stop interacting, and the fireball freezes out. At this point it expands with more than half the light velocity.
This does not happen only in a few "special" collision events, but essentially in every lead-lead collision: characteristic observables, like the average transverse momentum of produced particles or the kaon/pion ratio, show only the statistically expected uctuations in a thermalized ensemble, around average values which are the same in all collisions (NA49). Since the kaon/pion ratio is essentially fixed at the point of hadronization, this indicates the absence of long-range correlations like those expected in a fully-developed thermodynamic phase transition. A better theoretical understanding of the phase-transition dynamics might emerge from these observations. The short-range character suggests similarities with the transition found in high-Tc superconductivity.
Terms: parton densities (7100), parton density (1810), gluon densities (450), gluon density (2440), quark density (619), quark densities (490),
Terms: constituent quark (19400), primoridal sea (14), hadron jets (881), gluon momentum (287), gluon shadowing (387),
Terms: quarkonia (15800), quarkonia dissociation (25), quarkonia states (71), quarkonia rates (4), transition radiation detector (1580),
Terms: pentaquarks (14100), di-quarks (67), tri-quarks (1), triquark (133), tri-quark (87),
Wikipedia, the free encyclopedia - List of particles
Terms: strong nuclear (185000), quantum chromodynamics (331000), quantum chromo dynamics (1070), quantum chromodynamic phase transition (2), quantum chromodynamics phase transition (25), QCD phase transition (2160), QCD phase (10700), free quarks (2310),
Relativistic Heavy Ion Collider
Terms: polarization fluctuations (549), density fluctuations (144000), quantum cosmology (136000), inflationary paradigm (396), phase transitions in the early universe (1270),
Terms: dark matter (2210000), dark energy (715000), vacuum energy (155000), quantum fuzziness (173), neutrinos (1140000),
National Academies - Board on Physics and Astronomy - BPA Particle Physics Committee -
Terms: supernova (4670000), super nova (428000), supernovae (1180000), supernova dynamics (200), supernova science (517), neutrino physics (127000), neutrino cross sections (891), nucleosynthesis (351000), neutrino constraints (107), core collapse supernovae (13400), collapse supernovae (13900), supernova neutrinos (1900), terascale (224000), nuclear equation of state (2020), nuclear eos (204),
Effects of MSW and RSFP on neutrino constraints and supernova dynamics
How does supernova dynamics depend on the nuclear EOS?