Impact of global direct photon data on the gluon distribution function

Not scheduled
15m
WG1 Structure Functions and Parton Densities

Speaker

nobuo sato (jlab)

Description

In this talk we will discuss the phenomenology of direct photon production using theoretical predictions at \emph{next-to-leading order} with threshold resummation up to \emph{next-to-leading-logarithmic} accuracy. By analyzing the global data sets of direct photons, we found good agreement between the theory and the data for a wide range of energies ($\sqrt{s}=23$ GeV up to $7$ TeV) if we exclude the data from E706 experiment. We have studied the potential impact of direct photon data on parton distribution functions using a Bayesian reweighting approach. A reduction of $10\%$ around $0.3

Primary author

Co-author

Joseph Owens (Florida State University)

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