A Monte Carlo event generator is implemented for a two-Higgs-doublet model with maximal CP symmetry, the MCPM. The model contains five physical Higgs bosons; the
ρ
′, behaving similarly to the ...standard-model Higgs boson, two extra neutral bosons
h
′ and
h
″, and a charged pair
H
±
. The special feature of the MCPM is that, concerning the Yukawa couplings, the bosons
h
′,
h
″ and
H
±
couple directly only to the second-generation fermions but with strengths given by the third-generation-fermion masses. Our event generator allows the simulation of the Drell–Yan-type production processes of
h
′,
h
″ and
H
±
in proton–proton collisions at LHC energies. Also the subsequent leptonic decays of these bosons into the
μ
+
μ
−
,
μ
+
ν
μ
and
channels are studied as well as the dominant background processes. We estimate the integrated luminosities needed in
pp
collisions at center-of-mass energies of 8 and 14 TeV for significant observations of the Higgs bosons
h
′,
h
″ and
H
±
in these muonic channels.
Measurements of the proton structure functions in neutral and charged current interactions at HERA are reviewed covering the range 0.5 <
Q
2 < 30000 GeV
2 where
Q
2 is the negative four-momentum ...transfer squared. The data have been analysed in terms of NLO QCD fits by extracting parton density functions and the strong coupling constant
α
s
.
A measurement is presented of elastic deeply virtual Compton scattering e++p→e++γ+p at HERA using data taken with the H1 detector. The cross section is measured as a function of the photon ...virtuality, Q2, and the invariant mass, W, of the γp system, in the kinematic range 2<Q2<20GeV2, 30<W<120GeV and |t|<1GeV2, where t is the squared momentum transfer to the proton. The measurement is compared to QCD based calculations.
The inclusive e^-p single and double differential cross sections for neutral and charged current processes are measured with the H1 detector at HERA, in the range of four-momentum transfer squared ...Q^2 between 150 and 30000 GeV^2, and Bjorken x between 0.002 and 0.65. The data were taken in 1998 and 1999 with a centre-of-mass energy of 320 GeV and correspond to an integrated luminosity of 16.4 pb^(-1). The data are compared with recent measurements of the inclusive neutral and charged current e^+p cross sections. For Q^2 1000 GeV^2 clear evidence is observed for an asymmetry between e^+p and e^-p neutral current scattering and the generalised structure function xF_3 is extracted for the first time at HERA. A fit to the charged current data is used to extract a value for the W boson propagator mass. The data are found to be in good agreement with Standard Model predictions.
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