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The Large Hadron Collider (LHC), as the well-known energy frontier by colliding quarks and gluons, is also a powerful light-light collider at center-of-mass energies never reached before. In this talk, I will review the studies of the exclusive photon-photon processes in ultraperipheral collisions. I will introduce an automated Monte Carlo tool called gamma-UPC that enables the event generation of arbitrary exclusive final states via photon-photon fusion in ultraperipheral collisions of protons and/or nuclei, which is of relevance for novel SM measurements and BSM searches. In the second part of my talk, I will pick up a particular example on the light-by-light scattering process, and will discuss the precision SM predictions and its constraints on the hypothetical axion-like and graviton-like particles.
Bio: Hua-Sheng Shao is a CNRS researcher at the LPTHE in Paris since 2017. He held a postdoc position at CERN from 2014-2017, after his PhD from Peking University in 2014. His main research interests are to understand the physics at particle colliders, notably the Large Hadron Collider (LHC). In the past, he worked on a few topics, such as quarkonium production, precision cross-section calculations, and automation of QCD+electroweak corrections. He won an European Research Council Starting Grant in 2021.
Prof. Yanqing Ma