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Aggarwal, M. M.; Ahammed, Z.; Angelis, A.L.S.; Antonenko, V.; Arefiev, V.; Astakhov, V.; Avdeitchikov, V.; Awes, T. C.; Baba, P.V.K.S.; Badyal, S. K.; Bathe, S.; Batiounia, B.; Bernier, T.; Bhalla, K. B.; Bhatia, V. S.; Blume, C.; Bucher, D.; Büsching, H.; Carlén, L.; Chattopadhyay, Subhasis; Decowski, M. P.; Delagrange, H.; Dönni, P.; Majumdar, M. R. Dutta; Chenawi, K. El; Dubey, A. K.; Enosawa, K.; Fokin, S.; Фролов, В.; Ganti, M. S.; Garpman, S.; Gavrishchuk, O.; Geurts, F. J. M.; Ghosh, Tushar K.; Glasow, R.; Gus'kov, B.N.; Gustafsson, H.-Å.; Gutbrod, H.H.; Hřivnáčová, I.; Ippolitov, M.; Kalechofsky, H.; Karadjev, K.; Karpio, K.; Kolb, B. W.; Kosarev, I.; Koutcheryaev, I.; Куглер, А.; Kulinich, P.; Kurata, Masahiro; Lebedev, A.; Löhner, H.; Luquin, L.; Mahapatra, D. P.; Manko, V.; Martin, Michel; Martı́nez, G.; Maximov, A.; Miake, Y.; Mishra, G. C.; Mohanty, B.; Mora, M. J.; Morrison, D. P.; Moukhanova, T. V.; Mukhopadhyay, D.; Naef, H.; Nandi, B. K.; Nayak, S. K.; Nayak, T. K.; Nianine, A.; Nikitine, V.; Nikolaev, S.; Nilsson, P.; Nishimura, S.; Nomokonov, P.; Nystrand, J.; Öskarsson, A.; Otterlund, I.; Peitzmann, T.; Peressounko, D. Yu.; Petráček, V.; Phatak, S. C.; Pinganaud, W.; Plášil, F.; Purschke, M. L.; Rak, J.; Raniwala, R.; Raniwala, S.; Rao, N. Kameswara; Retière, F.; Reygers, K.; Roland, G.; Rosselet, L.; Roufanov, I.; Roy, C.; Rubio, J. M.; Sambyal, S.; Santo, R.; Sato, Susumu; Schlagheck, H.; Schmidt, H. R.; Schutz, Y.; Shabratova, G.; Shah, T. H.; Sibiriak, I.; Siemiarczuk, T.; Silvermyr, D.; Sinha, Bikash; Slavine, N.; Söderström, K.; Sood, G.; Sörensen, S.; Stankus, P. W.; Stefanek, G.; Steinberg, P.; Stenlund, E.; Šumbera, M.; Svensson, Tomas; Tsvetkov, A.; Tykarski, L.; Pijll, E. C. v. d.; Eijndhoven, N.v.; Nieuwenhuizen, G. J. van; Виноградов, А.; Viyogi, Y. P.; Vodopianov, A.S.; Vörös, S.; Wysłouch, B.; Young, G. R.

doi:10.1103/physrevlett.93.022301

Cited by 63 publications

(16 citation statements)

References 17 publications

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“…In addition, the yield of direct photons was also measured in Ref. [31] using direct photon interferometry. The most probable yield is found by assuming a source size of 6 fm, and a lower limit is obtained by assuming a vanishing R out .…”

Section: A Sps: Photons At Wa98mentioning

confidence: 99%

Thermal photons from heavy ion collisions: A spectral function approach

Dusling

Zahed

2010

Phys. Rev. C

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We analyze the photon rates from a hadronic gas in equilibrium using chiral reduction formulas and a density expansion. The chiral reduction is carried to second order in the pion density which in principal includes all kinetic processes of the type $X\to \pi\gamma$ and $X\to \pi\pi\gamma$. The resulting rates are encoded in the form of vacuum correlation functions which are amenable to experiment. The hadronic rates computed in this work along with the known perturbative QGP rates are integrated over the space-time evolution of a hydrodynamic model tuned to hadronic observables. The resulting yields are compared to the recent photon and low mass dilepton measurements at the SPS and RHIC. Predictions for the LHC are made

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Section: A Sps: Photons At Wa98mentioning

confidence: 99%

Thermal photons from heavy ion collisions: A spectral function approach

Dusling

Zahed

2010

Phys. Rev. C

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“…Direct photon spectra in central Pb(158 AGeV)-Pb collisions at the SPS as measured by the WA98 collaboration[146,147]. The upper panels contain theoretical calculations[148,126] with a moderate primordial pQCD component and a hot initial state (τ 0 =0.2-0.33 fm/c; in the upper left panel the lower curves are without primordial emission), while the calculations in the lower panels[149,108] contain primordial emission with Cronin effect and a larger thermalization time (τ 0 ≃1 fm/c).…”

mentioning

confidence: 99%

The Chiral Restoration Transition of QCD and Low Mass Dileptons

Rapp¹,

Wambach²,

Hees³

2010

Relativistic Heavy Ion Physics

108

143

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Recent developments in the evaluation of vector-meson spectral functions in hot and dense matter are discussed with emphasis on connections to the chiral phase transition in QCD. Model independent approaches including chiral low-density expansions, lattice QCD, chiral and QCD sum rules are put into context with model predictions for in-medium vector-spectral function utilizing effective Lagrangians. Hadronic manybody calculations predict a strong broadening (and little mass shift) of the ρ spectral function which rapidly increases close to the expected phase boundary of hadronic and quark-gluon matter. Pertinent dilepton rates appear to degenerate with perturbative quark-antiquark annihilation in the Quark-Gluon Plasma, suggestive for chiral symmetry restoration. Applications to low-mass dilepton spectra in heavy-ion collisions result in quantitative agreement with recent high-quality data at the CERN-SPS. Thermal radiation from temperatures around T c consistently reproduces the experimental dilepton excess observed at masses above 1 GeV as well. The interpretation of dilepton sources at high transverse momentum appears to be more involved.

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“…However, the hadrons reflect the space-time extent of the sources at the freezout, while the direct photon HBT at different p T region has a potential to map out the different sources throughout the entire evolution of the medium. In WA98 experiment at SPS energies the extracted radius of direct photon sources for p T < 300 MeV was comparable to those of pion [11]. This result is not surprising, as the creation of low p T photons should be dominated by the hadron gas phase.…”

Section: Future Prospectsmentioning

confidence: 71%

Experimental Overview of Direct Photon Results in Heavy Ion Collisions

Novitzky

2016

Nuclear and Particle Physics Proceedings

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Interferometry of Direct Photons in CentralPb208+Pb208

Cited by 63 publications

References 17 publications

Thermal photons from heavy ion collisions: A spectral function approach

Thermal photons from heavy ion collisions: A spectral function approach

The Chiral Restoration Transition of QCD and Low Mass Dileptons

Experimental Overview of Direct Photon Results in Heavy Ion Collisions

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