Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-03-21
Phys.Rev.D75:113006,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
Final version published in Phys.Rev.D
Scientific paper
10.1103/PhysRevD.75.113006
Boson boson scattering and Higgs production in boson boson fusion will be actively investigated at the LHC. We have performed a parton level study of all processes of the type $q_1 q_2 \to q_3 q_4 q_5 q_6 l^+l^-$ using for the first time a full fledged six fermion Monte Carlo event generator which employs exact matrix elements at $\O(\alpha_{em}^6)$. We have examined Higgs production in vector boson fusion followed by the decay chain $H\to ZZ\to l^+l^-jj$, including exactly all electroweak irreducible backgrounds. In the high mass region we have compared the case of a relatively light Higgs with the no-Higgs case. The integrated cross section for the latter case is more than twice that in the former for a minimum invariant mass of the $ZV$ pair of about 800 \GeV. We find, in a preliminary anlysis at parton level that, summing up the muon and the electron channels, about 30 events are expected in the light Higgs case for L=100 $fb^{-1}$.
Accomando Elena
Ballestrero Alessandro
Belhouari Aissa
Maina Ezio
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