Speaker
Description
In 2017, the ATLAS collaboration published an article that confirmed the experimental phenomenon of light-by-light scattering [1]. This process entails the creation of photon pairs as a consequence of the interaction between strong electromagnetic fields. The effect was successfully recorded through the intense photon flux generated during ultra-peripheral collisions of heavy ions. Two additional experimental results of light-by-light scattering were reported in the following years: one by the CMS collaboration [2] in 2018, and another by the ATLAS experiment [3] in 2019.
Light-by-light scattering is accompanied by the excitation of nuclei, which can result in the emission of nucleons from the nucleus. A similar effect is observed in processes such as $\rho_0$ meson photoproduction [4] or dimuon production [5]. Utilizing the formalism described in [6], the cross-section for light-by-light scattering accompanied by neutron emission was calculated. Furthermore, predictions prepared for the cross-section associated with proton emission, up to date unexplored for any other process, will be discussed. The developed results serve as a guiding framework for future experiments related to heavy-ion collisions, aimed at investigating light-by-light scattering.
Bibliography:
$[1]$ M. Aaboud et al. (ATLAS Collaboration), Nature Phys.13852 (2017)
$[2]$ CMS Collaboration, Phys. Lett. B 797 (2019) 134826
$[3]$ G. Aad et al. (ATLAS Collaboration), Phys. Rev. Lett. 123 (2019) 052001
$[4]$ J. Adam and others (ALICE Collaboration), JHEP 09 (2015) 095
$[5]$ G. Aad and others (ATLAS Collaboration), Phys. Rev. C 104, 024906 (2021)
$[6]$ M. Klusek-Gawenda, M. Ciemala, W. Schafer, and A. Szczurek, Phys. Rev. C 89, 054907 (2014)
