7,460 research outputs found

    Measurements of the Photon Structure Function at LEP

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    In this contribution we discuss recent measurements by the LEP experiments on photon structure functions.Comment: 3 pages, 5 figures, talk presented at the International Europhysics Conference on High Energy Physics EPS, July 17th-23rd 2003, Aachen, German

    Physics at a gamma gamma, e gamma and e-e- Option for a Linear Collider

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    This report presents a review of the studies made in the working group on gamma gamma and e gamma physics" of the ECFA/DESY workshop on linear collider physics. It reports on several new physics studies, in particular s-channel Higgs production. A summary of R&D activities for the interaction region is presented. The merits of e-e- collisions are briefly recalled.Comment: 10 pages, 20 figures. Proceedings of the ECFA/DESY study on Physics and Detectors at a Linear Collider. The wor reported in this talk was done by members of the gamma gamma and e gamma physics working group of the Extended ECFA/DESY Stud

    Two Photon Physics at Future Linear Colliders

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    Prospects for QCD studies in two-photon interactions at a future linear e+e- and gamma-gamma collider are discussed.Comment: 8 pages, 5 figures To be published in the proceedings of Photon 2000, Ambelside, England, 26-31 August 200

    Total gamma-gamma and gamma*-gamma* Cross Sections Measured at LEP

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    Recent results on total cross-section measurements in gamma-gamma and gamma*-gamma* collisions at LEP are reported. Phenomenological fits to the data are presented.Comment: 4 pages, 4 figures To be published in the proceedings of Diffraction 2000, Cetraro, Italy, September 2 - 7, 200

    Future physics with polarized ep-colliders

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    We discuss some of the physics opportunities at polarized ep-colliders. Recent studies for polarized ep-colliders include HERA, EIC and THERA.Comment: 7 pages, 6 figures, Invited talk presented at the ``International Workshop on the Spin Structure of the Proton and Polarized Collider Physics'', ECT, Trento, Italy, July 23-28, 200

    Discussion session on diffractive Higgs production

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    This note summarizes the discussion session on diffractive Higgs production at the DIS2002 workshop.Comment: Discussion session at DIS 2002, Cracow, May 200

    Determination of the muon Yukawa coupling at high energy e+e- linear colliders

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    The perspectives for the observation of the rare decay H -> mumu decay and the determination of the muon Yukawa coupling at a TeV-class and at a multi-TeV e+e- linear colliders are discussed. The signal for the decay can be obtained at 0.8 TeV and a first estimate of the coupling derived. A linear collider operating at 3 TeV, with high luminosity, is able to improve the accuracy on this couplings to 4% to 11% for 120 GeV < M_H < 150 GeV.Comment: 3 pages, 2 figures, to appear on the proceedings of the Snowmass 2001 Summer Study, Snowmass CO, June-July 200

    Delta G(x) from high p_t hadrons in DIS at a polarised HERA

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    We investigate the possibility to identify photon-gluon fusion (PGF) events in polarised deep inelastic ep scattering, assuming the kinematics of the HERA collider, by a pair of charged high p_t particles. In a Monte Carlo study we find possible selection criteria and show the expected measurable asymmetries. We discuss the sensitivity to ΔG(x)\Delta G(x) and compare the result to the one obtained using di-jets to tag PGF events.Comment: 8 pages, 5 figures, Contributed paper to the Proceedings of the Workshop on Physics at HERA with Polarized Protons and Electron
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