- ismd2017@nucleares.unam.mx
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Contribution
Photon production induced by magnetic field in HICs: photon yield and elliptic flow.
Speakers
- Dr. Luis HERNANDEZ
Primary authors
- Dr. Luis HERNANDEZ (Instituto de Ciencias Nucleares, UNAM)
Co-authors
- Dr. Alejandro AYALA (Instituto de Ciencias Nucleares, UNAM)
- Dr. Maria Elena TEJEDA-YEOMANS (Departamento de Fisica, Universidad de Sonora)
- Dr. Saul HERNANDEZ (Instituto de Ciencias Nucleares)
- Prof. CESAREO DOMINGUEZ (UNIVERSITY OF CAPE TOWN, DEPARTMENT OF PHYSICS)
- Jorge CASTAÑO-YEPAS (Instituto de Ciencias Nucleares, UNAM)
Content
In this talk, we present the results of photon production at early times in semi-central relativistic heavy-ion collisions from non-equilibrium gluon fusion induced by a magnetic field. The calculation accounts for the main features of the collision at these early times, namely, the intense magnetic field and the high gluon occupation number. The photon yield from this process is an excess over calculations without magnetic field effects. We compare this excess to the difference between PHENIX data and recent hydrodynamic calculations for the photon transverse momentum distribution and elliptic flow coefficient $v_2$. We show that with reasonable values for the saturation scale and magnetic field strength, the calculation helps to better describe the experimental results obtained at RHIC energies for the lowest part of the transverse photon momentum.
Session
Pertubative and nonperturbative QCD