An estimate for the thermal photon rate from lattice QCD
arXiv:1710.07050 · doi:10.1051/epjconf/201817507044
Abstract
We estimate the production rate of photons by the quark-gluon plasma in lattice QCD. We propose a new correlation function which provides better control over the systematic uncertainty in estimating the photon production rate at photon momenta in the range πT/2 to 2πT. The relevant Euclidean vector current correlation functions are computed with = 2 Wilson clover fermions in the chirally-symmetric phase. In order to estimate the photon rate, an ill-posed problem for the vector-channel spectral function must be regularized. We use both a direct model for the spectral function and a model-independent estimate from the Backus-Gilbert method to give an estimate for the photon rate.
arXiv comment15 pages, 11 figures, talk presented at 35th annual International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain
References in corpus (13)
- Transport coefficients in high temperature gauge theories: (II) Beyond leading log
- Photon Emission from Quark-Gluon Plasma: Complete Leading Order Results
- Photon and dilepton production in supersymmetric Yang-Mills plasma
- The strange quark mass and Lambda parameter of two flavor QCD
- Next-to-leading order thermal photon production in a weakly coupled quark-gluon plasma
- On the hadronic contribution to sterile neutrino production
- Measurement of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Thermal Correlators in the ρ channel of two-flavor QCD
- Towards flavour diffusion coefficient and electrical conductivity without ultraviolet contamination
- Reconstructing the thermal Green functions at real times from those at imaginary times
- The non-perturbative O(a)-improved action for dynamical Wilson fermions
- W, Z and photon production in CMS
- Measurement of the W, Z and photon production in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector
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- Some Aspects of the Theory of Heavy Ion Collisions
- Testing thermal photon and dilepton rates
- Lattice QCD estimates of thermal photon production from the QGP
- Electromagnetic and weak probes: theory
- Euclidean correlators at imaginary spatial momentum and their relation to the thermal photon emission rate
- Electrical conductivity of the quark-gluon plasma from the low energy limit of photon and dilepton spectra
- Shedding light on thermal photon and dilepton production
- Lattice QCD estimate of the quark-gluon plasma photon emission rate
- Photon emissivity of the quark-gluon plasma: a lattice QCD analysis of the transverse channel