Photon-photon scattering in the resonance region at midrapidity at the LHC
Abstract
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 and . The elementary photon-photon scattering cross section is presented. The cross section for photon-photon scattering in Pb-Pb is derived by convoluting the elementary photon-photon cross section with the Pb-Pb photon luminosity. The main background to two-photon final states, arising from double 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.
Keywords
Cite
@article{arxiv.1812.05574,
title = {Photon-photon scattering in the resonance region at midrapidity at the LHC},
author = {R. Schicker and Mariola Klusek-Gawenda and A. Szczurek},
journal= {arXiv preprint arXiv:1812.05574},
year = {2018}
}
Comments
6 pages, 7 figures, to appear in Proceedings Workshop Diffraction and Low-x, aug 26-sept 1, 2018, Reggio Calabria