IOP HEPP Particle Physics 2008

Session

Parallel 2A: Collider Physics - Higgs

1 Apr 2008, 11:00

Lancaster University

19. The Search for Higgs in the W+W- Decay Channel at the CDF detector at Fermilab

Mr toby davies (glasgow university)

01/04/2008, 11:00

An outline of the current search results for the standard model Higgs decaying to W+W- and then to leptons from CDF. Descriptions and evaluations of the matrix element and neural net techniques which are presently used together in current searches.

73. Search for Associated Production of Z and Higgs Bosons in nunu bb Final States

Mr Theo Christoudias (Imperial College)

01/04/2008, 11:13

We present a search for a light Standard Model Higgs Boson produced in association with a Z boson decaying invisibly into a pair of neutrinos. The final state is characterised by a presence of two b-tagged jets from the Higgs Boson decay and a large imbalance in the transverse energy of the event. The search has been performed using data collected by the D0 experiment at Fermilab. This channel...

31. Weak boson fusion

Sophy Palmer (University of Durham)

01/04/2008, 11:26

Higgs production via weak boson fusion (WBF) is both an excellent discovery channel and a source of valuable information about the structure of the coupling between weak bosons and a Higgs. WBF is examined in both the Standard Model and the MSSM, with particular emphasis on this coupling and its sensitivity to higher-order corrections.

24. Searching for a Higgs Boson in the channel ttH(H->bb) with the ATLAS detector

Ms Lily Asquith (University College London)

01/04/2008, 11:39

The search of a Higgs Boson around the lower mass region (the mass indicated by LEP precision measurements) is particularly challenging at the LHC due to the vast QCD background. For M_Higgs < 130 GeV, decay is predominantly to a b anti-b quark pair, which makes it difficult to reconstruct because the total cross section for b anti-b production at the LHC will be ~10^9 times higher than the...

77. Higgs self coupling sensitivity at ILC

Mr Michele Faucci Giannelli (Royal Holloway University of London)

01/04/2008, 11:52

The Higgs self coupling is a precision measurement that LHC cannot produce. A linear collider detector must be able to perform such measurement therefore this channel can be used as a benchmark to optimize the detector design. The challenge of this analysis is the overwhelming tt background. In order to reduce it, a cut based and a neural network analysis have been performed. After an...

58. Higgs studies at a future electron-positron collider

Mark Grimes (University of Bristol)

01/04/2008, 12:05

An electron-positron collider would provide a tool for incredibly precise measurements of the discoveries made at the LHC. This talk will discuss the applications to Higgs physics, and how the excellent vertexing capabilities at such a collider would be able to distinguish between many physics models, through the measurement of the Higgs branching ratios.

89. Small x gluon from exclusive J/psi production

Ms Cathy Nockles (Liverpool University)

01/04/2008, 12:18

Exclusive J/psi production, gamma p->J/psi p, offers a unique opportunity to determine the gluon density of the proton in the small Bjorken x domain. We use the available HERA data to determine the gluon distribution in the region 10^{-4} < x < 10^{-2} for scales 2 < Q^2 < 10 GeV^2, where the uncertainty on the gluon extracted from the global parton analyses is large. We present results...