2,486 research outputs found

    Probing the MSSM Higgs Sector via Weak Boson Fusion at the LHC

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    In the MSSM weak boson fusion produces the two CP even Higgs bosons with a combined strength equivalent to the production of the Standard Model Higgs boson. The tau tau decay mode --- supplemented by gamma gamma --- provides a highly significant signal for at least one of the CP even Higgs bosons at the LHC with reasonable luminosity. The accessible parameter space covers the entire physical range which will be left unexplored by LEP2.Comment: 8 pages, LaTeX2e, RevTeX3.1, 4 figures include

    Prospects for Higgs properties determination at the LHC

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    The strategies recently developed to study Higgs boson properties at the LHC are reviewed. It is shown how to obtain model-independent determinations of couplings to fermions and gauge bosons by exploiting different production and decay channels. We consider in some detail the case of Weak Boson Fusion Higgs production with H --> b \bar b as well as the prospects for the determination of the Higgs self-coupling at the SLHC.Comment: LaTeX (using npb style), 5 pages, 1 .eps figure. Talk presented at RADCOR and Loops and Legs 2002, 8-13 September 2002, Kloster Banz, Germany. Added one referenc

    A new method for extracting the bottom quark Yukawa coupling at the CERN Large Hadron Collider

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    We propose a new method for measuring the H -> bb rate at the CERN LHC in a manner which would allow extraction of the b quark Yukawa coupling. Higgs boson production in purely electroweak WHjj events is calculated. The Standard Model signal rate including decays W -> l nu and H -> bb is 11 fb for M_H = 120 GeV. It is possible to suppress the principal backgrounds, Wbbjj and ttjj, to approximately the level of the signal. As the top quark Yukawa coupling does not appear in this process, it promises a reliable extraction of g_Hbb in the context of the Standard Model or some extensions, such as the MSSM.Comment: added background, updated/added references, additional comment

    Precision Higgs Physics at a Future Linear Collider

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    Assuming that a Higgs sector is responsible for electroweak symmetry breaking, we attempt to address two important questions: How much better precision are various measurements of Higgs boson properties at a future linear collider than at the LHC? What can a future linear collider do for Higgs physics that the LHC cannot?Comment: 10 pp, 4 eps fig, econf, invited talk at RADCOR 2000 (Carmel, CA, Sept 2000), includes additional comments and citations on multiple Higgs productio

    Properties of ionization breakdown of air at microwave frequencies and optimization of component dimensions for maximum microwave power

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    Method provides optimization of dimensions in vented RF components for predictable performance at critical pressures, eliminates leakage from hermetically sealed types, and utilizes coaxial RF multicouplers

    Probing Neutral Gauge Boson Self-interactions in ZZ Production at Hadron Colliders

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    A detailed analysis of ZZ production at the upgraded Fermilab Tevatron and the CERN Large Hadron Collider is presented for general ZZZ and ZZ\gamma couplings. Deviations from the Standard Model gauge theory structure for each of these can be parameterized in terms of two form factors which are severely restricted by unitarity at high energy. Achievable limits on these couplings are shown to be a dramatic improvement over the limits currently obtained by e^+e^- experiments.Comment: 36 pages, 15 figures, revte

    Searching for H -> gamma gamma in weak boson fusion at the LHC

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    Weak boson fusion is a copious source of intermediate mass Higgs bosons at the LHC, with a rate sigma*B(H -> gamma gamma) of up to 9 fb. The additional very energetic forward jets in these events provide for a unique signature. A parton level analysis of the dominant backgrounds demonstrates that this channel allows the observation of H -> gamma gamma in a low background environment, with modest luminosity.Comment: 12 pages, 4 figures, submitted to Journal of High Energy Physic

    Measurement technique for the determination of antenna directivity

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    Measurement of great circle patterns requires rotation in azimuth with discrete rotation in elevation. This technique eliminates a set of slip-rings and rotary joints and permits the use of larger models since only continuous azimuth rotation is required
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