Speaker
Tobias Neumann
(Brookhaven National Laboratory)
Description
At the LHC, diphoton production constitutes the main background of Higgs production in the diphoton decay and of many new physics models predicting large-mass diphoton resonances. Underestimated theoretical uncertainties and large perturbative corrections have been a long-standing issue over the years with various suggestions. Especially the transverse momentum spectrum has lead to various prescriptions. We present transverse momentum resummed diphoton predictions at the level of N$^3$LL$'$+NNLO which include the recently published 3-loop hard and beam functions. We discuss the residual uncertainties and challenges for the transverse momentum distribution and address the effect of hybrid-cone photon isolation.
Primary author
Tobias Neumann
(Brookhaven National Laboratory)
