Speaker
Dr.
Leandro Cieri
(La Sapienza, Università di Roma)
Description
Diphoton production is the main background in searches and studies (performed at the LHC) for a low mass Higgs boson, decaying in a pair of photons. And for this reason, it is desirable to count with the best theoretical tool to describe this background. In this talk we will present a detailed study on the photon isolation prescriptions, together with a "tight isolation accord" in order to compare experimental data and theoretical calculations obtained at the highest possible perturbative order. Finally we'll show a comparison between theory and the LHC and Tevatron data, and we'll discuss why the NNLO is necessary in order to understand the phenomenology of this process.
Primary author
Dr.
Leandro Cieri
(La Sapienza, Università di Roma)
