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\bibstyle{JHEP}

\journal{Physics Reports}

\date{\today}% It is always \today, today,
             %  but any date may be explicitly specified

\begin{document}

\begin{frontmatter}

\title{The Structure of the Proton in the LHC Precision Era}

\input{Authorlist_PhysRept.tex}

\begin{abstract}
  We review recent progress in the determination of the
  parton distribution functions (PDFs) of the proton, with emphasis on the applications
  for precision phenomenology at the Large Hadron Collider (LHC).
  %
  First of all, we introduce the general theoretical
  framework underlying the global QCD analysis
  of the quark and gluon internal structure of protons.
  %
  We then present a detailed overview of the hard-scattering measurements,
  and the corresponding theory predictions, that are used
  in state-of-the-art PDF fits.
  %
  We emphasize here the role that higher-order QCD and electroweak corrections
  play in the description of recent high-precision collider data.
  %
  We present the methodology used to extract PDFs in global
  analyses, including the PDF parametrization strategy and the definition
  and propagation of PDF uncertainties.
  %
  Then we review and compare the most recent releases from
  the various PDF fitting collaborations, highlighting their differences
  and similarities.
  %
  We discuss the role that QED corrections and photon-initiated contributions
  play in modern PDF analysis.
  %
  We provide representative examples of the implications of PDF fits
  for high-precision LHC phenomenological applications, such as Higgs coupling measurements
  and searches for high-mass New Physics resonances.
  %
  We conclude this report by discussing some selected topics relevant
  for the future of PDF determinations, including the treatment of
  theoretical uncertainties, the connection with lattice QCD calculations,
  and the role of PDFs at future high-energy colliders beyond the LHC.
\end{abstract}

\begin{keyword}
  Parton Distributions \sep Quantum Chromodynamics \sep Large
  Hadron Collider \sep Higgs boson \sep Standard Model
  \sep Electroweak theory
  \end{keyword}

\end{frontmatter}

\clearpage

\tableofcontents
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\clearpage

%\ccode{PACS numbers}
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                             % Classification Scheme.

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%%%%%%%%%%
\section{Introduction}
\input{1-introduction/sec-introduction.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{The global QCD analysis framework}
\input{2-pdffitting/sec-pdffitting.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{Experimental data and theoretical calculations}
\input{3-datatheory/sec-datatheory.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{Fitting methodology}
\label{sec:fitmeth}
\input{4-fitting/sec-fitting.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{PDF analyses: state of the art}\label{sec:pdfgroups}
\input{5-pdfgroups/sec-pdfgroups.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{The proton structure}\label{sec:structure}
\input{6-structure/sec-structure.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{Electroweak corrections and the photon PDF}\label{sec:QED}
\input{7-QED/sec-QED.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{Implications for LHC phenomenology}\label{sec:LHCpheno}
\input{8-pheno/sec-LHCpheno.tex}

%%%%%%%%%%%%%%%%%%
\vspace{0.6cm}
\section{The future of PDF determinations}
\input{9-future/sec-PDFfuture.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section{Conclusions}
\input{10-conclusion/sec-conclusions.tex}

%%%%%%%%%%
\vspace{0.6cm}
\section*{Acknowledgments}
\input{10-conclusion/acknowledgements}

%%%%%%%%%%
\vspace{0.6cm}
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\endinput

