Inclusive cross sections for Higgs boson production in proton-proton collisions are calculated in the formalism of unintegrated gluon distributions (UGDF). Different UGDF from the literature are used. Although they were constructed in order to describe the HERA deepinelastic scattering F2 data, they lead to surprisingly different results for Higgs boson production. We present both two-dimension...

Boson-boson scattering and Higgs production in boson-boson fusion hold the key to electroweak symmetry breaking. In order to analyze these essential features of the Standard Model we have performed a partonic level study of all processes q1q2 → q3q4q5q6lν at the LHC using the exact matrix elements at O(α 6 em) provided by PHASE, a new MC generator. These processes include also three boson produ...

The cross section measurements of the Higgs boson production in the vector boson fusion (VBF) process at the LHC followed by a Higgs boson decay into ττ , WW and γγ will significantly extend the possibility of Higgs boson coupling measurements. Prospective analyses with the CMS experiment are discussed for the H → γγ , WW and ττ decay channels for an integrated LHC luminosity of 30 fb−1. For a ...

A weakly coupled new neutral gauge boson forms a narrow resonance that is hard to discover directly in ee collisions. However, if the gauge boson mass is below the center-of-mass energy, it can be produced through processes where the effective energy is reduced due to initial-state radiation and beamstrahlung. It is shown that at a high-luminosity linear collider, such a gauge boson can be sear...

Abstract: In this paper, we analyze the high-energy limits for Higgs boson + two jet production. We consider two high-energy limits, corresponding to two different kinematic regions: (a) the Higgs boson is centrally located in rapidity between the two jets, and very far from either jet; (b) the Higgs boson is close to one jet in rapidity, and both of these are very far from the other jet. In bo...

At the Large Hadron Collider (LHC), the main production channels of a Higgs boson are gluon fusion and weak-boson fusion (WBF) [1, 2]. The WBF process, qq → qqH , occurs through the exchange of a W or a Z boson in the t channel, and is characterized by the production of two forward quark jets [3]. Even though it is smaller than the gluon fusion channel by about a factor of 5 for an intermediate...

Searches for the Standard Model Higgs boson by the four LEP experiments found excess events in two mass ranges: a 2.3σ excess around 98 GeV, and an 1.7σ excess around 115 GeV. The latter has been discussed widely in the literature, but the former has attracted little attention so far. In this paper I explore the possibility of explaining the excess near 98 GeV through production of the lighter ...

Vector-boson fusion processes are an important tool for the study of electroweak symmetry breaking at hadron colliders, since they allow to distinguish a light Higgs boson scenario from strong weak boson scattering. We here consider the channels WW →ZZ and ZZ→ZZ as part of electroweak Z boson pair production in association with two tagging jets. We present the calculation of the NLO QCD correct...

A search for the standard model Higgs boson at LEP is reported. In the following, the results obtained by combining all standard model Higgs boson search channels of the experiments (at the end of run in the year 2000) are discussed. The data favour slightly a signal-andbackground hypothesis. The excess over the background would be consistent with the existence of a standard model Higgs boson a...

We derive exact expressions for luminosities of massive vector-boson pairs which can be used to describe the cross sections for processes in hadron collisions or e+e− annihilation which proceed via two-vector-boson scattering. Our approach correctly takes into account the mutual influence of the emission of one vector boson on the emission of a second one. We show that only approximately the ex...