Description
A study is presented to extend the measurements of photon-photon
scattering in ultra-peripheral Pb-Pb collisions at the LHC into
the mass region of the pseudoscalar resonances eta and eta'.
The elementary photon-photon scattering cross section discussed in
Ref.1 is extended to the low masses of these pseudoscalars. The main
background to two-photon final states, arising from double pi0
production with two of the four decay photons escaping detection, is
examined, and possible kinematical conditions are discussed to optimize
the signal-to-background ratio for such measurements at mid-rapidity.
Ref.1:
M. Klusek-Gawenda, P. Lebiedowicz, A. Szczurek, Phys.Rev.C93 (2016) no.4, 044907.
Author
Rainer Schicker
(Ruprecht Karls Universitaet Heidelberg)
Co-authors
Mariola Kłusek-Gawenda
(IFJ PAS)
Antoni Szczurek
(Institute of Nuclear Physics)
