Orateur
Description
The study of femtoscopic correlations between photon pairs, although challenging from an experimental standpoint, can serve as a complemen- tary approach to traditional hadron femtoscopy. Owing to the penetrative nature of photons, which are unaffected by strong or electromagnetic in- teractions, such measurements can be used to probe the early stages of heavy-ion collisions, prior to freeze-out. Furthermore, since femtoscopy is sensitive to the emission sequence of particles, it may provide the poten- tial to distinguish between the femtoscopic signals of direct photons and decay photons, thus enabling the estimation of direct photon yields.
As part of the FAIR/GSI scientific complex, the HADES experiment focuses on detecting light vector mesons through dielectron (e±) channels produced in high-energy heavy-ion collisions at energies of approximately 1–2 A GeV. With the presence of electromagnetic calorimeters, HADES is also capable of direct photon detection, facilitating femtoscopic mea- surements.
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Preliminary results from Ag+Ag collision data at will be presented.
Keywords: HADES, femtoscopy, photons
