NNLO QCD results for diphoton production at the LHC and the Tevatron

by Leandro Javier Cieri (F)

Friday 22 Mar 2013, 14:30 → 15:30 Europe/Rome

conference room

Diphoton production is the main background in searches and studies for a low mass Higgs boson, decaying in a pair of photons. Due to current searches and studies at the LHC, it is desirable to count with the best theoretical tool to describe this background. In this talk we'll present the details behind the calculation, which is based on the transverse momentum subtraction formalism and we'll show
different results obtained using a code that calculates diphoton production at NNLO in perturbative QCD. We'll talk about the comparison with the LHC data and Tevatron data, and we'll discuss why the NNLO is necessary to understand the phenomenology of this process.

Slides lean-venerdi.pdf