Speaker
Description
We discuss possible future studies of photon-photon (light-by-light)
scattering using planned FoCal and ALICE 3 detectors.
We include different mechanisms of
scattering such as double-hadronic photon fluctuations,
(
The broad range of (pseudo)rapidities and lower cuts on transverse
momenta open a necessity to consider not only dominant box
contributions but also other subleading contributions.
Here we include low mass resonant
contributions.
The resonance contributions give intermediate photon transverse
momenta.
However, these contributions can be eliminated by imposing windows
on di-photon invariant mass.
We study and quantify individual box contributions (leptonic, quarkish).
The electron/positron boxes dominate at low
di-photon invariant masses.
The PbPb
within equivalent photon approximation in the impact parameter space.
Several differential distributions are presented and discussed.
We consider four different kinematic regions. We predict cross
section in the (mb-b) range for typical ALICE 3 cuts, a few orders
of magnitude larger than for the current ATLAS or CMS experiments.
We also consider the two-
be eliminated at the new kinematical range of the ALICE 3 measurements
by imposing dedicated cuts on di-photon transverse momentum
and