96 research outputs found

    Heavy Flavour Production in Two-Photon Collisions

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    We review the production of charm and bottom quarks in two-photon collisions at e+e- colliders. The next-to-leading order QCD predictions for total cross sections and differential distributions are compared with recent experimental results.Comment: 6 pages, 2 figures. Talk given at the UK Phenomenology Workshop on Collider Physics, Durham, England, 19-24 Sep 199

    Prospects for Pentaquark Searches in e+ee^+e^- Annihilations and γγ\gamma\gamma Collisions

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    Recent strong experimental evidence of a narrow exotic S = +1 baryon resonance, Θ+\Theta^+, suggests the existence of other exotic baryons. We discuss the prospects of confirming earlier experimental evidence of Θ+\Theta^+ and the observation of additional hypothetical exotic baryons in e+ee^+e^- annihilations and γγ\gamma\gamma collisions at LEP and B Factories

    Event shapes in e+e- annihilation and deep inelastic scattering

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    This article reviews the status of event-shape studies in e+e- annihilation and DIS. It includes discussions of perturbative calculations, of various approaches to modelling hadronisation and of comparisons to data.Comment: Invited topical review for J.Phys.G; 40 pages; revised version corrects some nomenclatur

    Resolved Photon Processes

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    We review the present level of knowledge of the hadronic structure of the photon, as revealed in interactions involving quarks and gluons ``in" the photon. The concept of photon structure functions is introduced in the description of deep--inelastic eγe \gamma scattering, and existing parametrizations of the parton densities in the photon are reviewed. We then turn to hard \gamp\ and \gaga\ collisions, where we treat the production of jets, heavy quarks, hard (direct) photons, \jpsi\ mesons, and lepton pairs. We also comment on issues that go beyond perturbation theory, including recent attempts at a comprehensive description of both hard and soft \gamp\ and \gaga\ interactions. We conclude with a list of open problems.Comment: LaTeX with equation.sty, 85 pages, 29 figures (not included). A complete PS file of the paper, including figures, can be obtained via anonymous ftp from ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-898.ps.

    Search for two-photon production and resonances decaying into Kanti K and Kanti K

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    SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    A study of 3-jet events in e e annihilation into hadrons at 34.6 c.m. energy

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    SIGLEAlso published in Z. Phys., C (Oct 1985) v. 29(1) p. 29-40 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    Vector meson production in the final state K K photon-photon collisions

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    SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

    Search for spinless bosons in e e annihilation

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    SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
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