%Title: Determination of Spin and CP of the Higgs boson from WBF
%Author: C.-P. Buszello, P. Marquard
%hep-ph/0603209
\documentclass[notoc,paper,12pt]{JHEP3}
   
\usepackage{amsmath}
\usepackage{graphicx}
\author{C.-P.~Buszello\\ Cavendish Laboratory, University of Cambridge, \\
  E-mail: \email{buszello@hep.phy.cam.ac.uk}}

\author{P.~Marquard\\ 
  Institut f\"ur Theoretische Teilchenphysik, Universit\"at Karlsruhe, \\
  E-mail: \email{Marquard@particle.uni-karlsruhe.de}}

\preprint{TTP06-10\\
SFB/CPP-06-11\\
CAVENDISH-HEP-06-10\\
hep-ph/0603209\\}

\keywords{Higgs Physics, Hadronic Colliders, Standard Model, Phenomenological Models}
\title{Determination of Spin and CP of the Higgs Boson from WBF}

\abstract{We explore the possibilities to determine the spin/CP
  properties of the Higgs boson at the LHC. To cover the mass region
  below the ZZ threshold we make use of the properties of the production in Weak Boson Fusion (WBF)
  and the decay chain H $\rightarrow$ W$^+$W$^-$ $\rightarrow$ $\ell^+\nu \ell^-\nu$. 
  In particular, we study the angular correlations of the 
  forward jets and the distribution of the invariant mass of the lepton pair for
  different hypothetical Higgs like particles.}
\begin{document}

\input{introduction}

\input{chapter3}

\section{Conclusions}
We have implemented a matrix element generator capable of simulating the
generation of Higgs bosons via WBF and its decay to W pairs with SM and
non SM spin and CP quantum numbers (namely $0^{+}, 0^{-}, 1^+, 1^-$). We
have demonstrated that the different couplings lead to distinct
distributions of the opening angle of the tag jets and the invariant
mass of the leptons from the leptonic decay of the W pairs. The latter
distributions are very sensitive to the lepton cuts used to isolate the
signal.  This leads to the necessity of optimizing these cuts carefully
when performing the measurement using real data, depending on the
background level observed in the experiment. The tag jet distributions
appear much more robust against the cuts. They provide very promising
prospects to confirm the spin/CP state of an SM Higgs with a mass
between 130 and 180 GeV using an integrated luminosity of 30fb$^{-1}$.


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\end{document}
