An estimate for the thermal photon rate from lattice QCD
- 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 Nf = 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 modelindependent estimate from the Backus-Gilbert method to give an estimate for the photon rate.
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| Author: | Bastian Benjamin BrandtGND, Anthony FrancisORCiDGND, Tim HarrisGND, Harvey B. MeyerORCiDGND, Aman SteinbergGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-718423 |
| DOI: | https://doi.org/10.1051/epjconf/201817507044 |
| ISSN: | 2100-014X |
| Parent Title (English): | EPJ Web of Conferences |
| Publisher: | EDP Sciences |
| Place of publication: | Les Ulis |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2018/03/26 |
| Date of first Publication: | 2018/03/26 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Contributing Corporation: | International Symposium on Lattice Field Theory (35. : 2017 : Granada) |
| Release Date: | 2023/01/31 |
| Volume: | 175 |
| Issue: | 07044 |
| Page Number: | 15 |
| HeBIS-PPN: | 505763540 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
