\newcommand{\gaga}{{\gamma \gamma} }
\newcommand{\asgj}{{\alpha_s} }
\newcommand{\etag}{{\eta_\gamma} }
\newcommand{\phig}{{\phi_\gamma} }
\newcommand{\ptg}{{p_{T \,\gamma} } }
\newcommand{\ptq}{{p_{T \, p}} }
\newcommand{\ptgu}{{p_{T \, \gamma_1}} }
\newcommand{\ptgd}{{p_{T \, \gamma_2}} }
\newcommand{\mgg}{{M_{\gamma \gamma}} }
\newcommand{\qtgj}{{Q^t_{\gamma \gamma}} }
\newcommand{\Hgg}{{H\rightarrow\gamma \gamma} }
\newcommand{\bc}{\begin{center}}
\newcommand{\ec}{\end{center}}
\newcommand{\bmini}{\begin{minipage}{.48\linewidth}}
\newcommand{\emini}{\end{minipage}}

\section{PHOTONS, HADRONS AND JETS
         \protect\footnote{Section coordinators: J. Huston and E. Pilon}
        \protect\footnote{Contributing authors: T.~Binoth, S.D. Ellis, 
	J.-Ph.~Guillet, K.~Lassila-Perini, J. Huston, M. T\"onnesmann and 
	E.~Tournefier}}

Many signatures of both Standard Model physics and physics that lies beyond 
the Standard Model require the reconstruction of photons and jets in the final
state and the comparison of experimental data to theoretical predictions from
both Monte Carlos and from next-to-leading order (NLO) theory. There were two
contributions to the QCD/SM group dealing with these issues. The first
contribution discusses improvements to algorithms for the reconstruction of
experimental jets both at the Tevatron and at the LHC and comparisons to
perturbative QCD predictions at NLO. In the second contribution, predictions
for diphoton and photon-$\pi^o$ production at the LHC from the Monte Carlo
program {\tt PYTHIA} are compared to those from the NLO program {\tt DIPHOX}.
Distributions for kinematic variables of interest for searches for a Higgs
boson decaying into two photons are compared between the two programs.

\input{conejetalgs}

\input{DipPyt}

\input{leshouches2001}
