relativistic heavy ions experiment iv
DESCRIPTION
Relativistic Heavy Ions Experiment IV. Photons and Neutral Mesons. Time Evolution of a Heavy Ion Collision. Photon Sources in A+A Collisions. Hard direct Photons. E.M. Bremsstrahlung. Prompt Photon Sources in p+p Reactions. Prompt Photons. Photons from Jet-Fragmentation. - PowerPoint PPT PresentationTRANSCRIPT
Relativistic Heavy Ions
Experiment IV
Photons and Neutral Mesons
Time Evolution of a Heavy Ion Collision
Photon Sources in A+A Collisions
Hard direct Photons
E.M. Bremsstrahlung
Prompt Photon Sources in p+p Reactions
Prompt Photons
Photons fromJet-Fragmentation
Fraction of Prompt Photons in p+p Reactions
Photon Spectrum in p+p
Photons in p+p and p+A
Thermal photons fromthe hot medium
Jet-photon conversionin the medium
Additional Photon Sources in A+A
Turbide, Rapp, Gale, Phys. Rev. C 69 (014903), 2004
Theoretical Expectation in A+A
Rear View of Leadglass Block (Super Module)
Lead Glass Calorimeter in WA98
Electromagnetic Calorimeter in PHENIX
PHENIX Experiment
Photons from Radiative Decays in Pb+Pb at 158AGeV
Background Photons from Radiative Decays
Systematic Errors of Direct Photon Measurement in Pb+Pb
Ratio of Measured to Background Photons
Direct Photon Spectrum in Pb+Pb at 158AGeV
kt-broadening +Ti = 205MeV
no kt-broadening +Ti = 270MeV
Turbide, Rapp, Gale, Phys. Rev. C 69 (014902), 2004
Prompt and Thermal Photons in Pb+Pb at 158AGeV
Ti = 214 - 255 MeVQGP + HG + pQCD(Non-boost inv. hydro)
Huovinen, Ruuskanen, Räsänen (Nucl. Phys. A 650 (227) 1999)
Ti = 213 - 234 MeVPure HG + pQCD(Non-boost inv. hydro)
Ti = 335 MeV, = 0,2 fm/c
QGP + HG + pQCC(Bjorken hydro)
Svrivastava (nucl-th/0411041)
250 < Ti < 370 MeV,0,5 < < 3 fm/c
QGP + HG + pQCDRenk (Phys.Rev.C67:064901,2003)
Ti = 250 - 270 MeV, = 0,5 fm/c
QGP + HG + pQCD without kT
Ti = 205 MeV, = 1 fm/c
QGP + HG + pQCD with kT
Turbide, Rapp, Gale (Phys.Rev.C69:014903,2004 )
Theoretical Descriptions and Initial Temperatures Ti
p+p measurementscaled with Ncoll
Prompt Photons in Au+Au, s = 200GeV
Direct Photon Measurement via Virtual Photons
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Direct Photon Measurement via Virtual Photons
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Direct Photon Measurement via Virtual Photons
Direct Photon Measurement via Virtual Photons
Direct Photon Measurement via Virtual Photons