311 research outputs found

    Supersymmetric Higgs Bosons: a Theoretical Introduction

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    After an introduction to the Higgs sector of supersymmetric extensions of the Standard Model, recent results on radiative corrections to Higgs boson masses and couplings are reviewed. The phenomenology of supersymmetric Higgs searches at large hadron colliders and at a possible linear \epem collider is also described. (Invited talk at the Workshop `Ten years of SUSY confronting experiment', CERN, 7--9 September 1992, to appear in the Proceedings)Comment: 15 A4 pages, 6 figures not included, CERN-TH.6792/9

    Mass formulae and natural hierarchy in string effective supergravities

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    We study some conditions for the hierarchy m3/2<<MPm_{3/2} << M_P to occur naturally in a generic effective supergravity theory. Absence of fine-tuning and perturbative calculability require that the effective potential has a sliding gravitino mass and vanishing cosmological constant, up to O(m3/24){\cal O}(m_{3/2}^4) corrections. In particular, cancellation of quadratically divergent contributions to the one-loop effective potential should take place, including the `hidden sector' of the theory. We show that these conditions can be met in the effective supergravities derived from four-dimensional superstrings, with supersymmetry broken either at the string tree level via compactification, or by non-perturbative effects such as gaugino condensation. A crucial role is played by some approximate scaling symmetries, which are remnants of discrete target-space dualities in the large moduli limit. We derive explicit formulae for the soft breaking terms arising from this class of `large hierarchy compatible' (LHC) supergravities.Comment: 40 pages, no figures, CERN-TH.7192/94, LPTENS -94/12, UCLA/94/TEP13 (plain LATEX, to be run twice). Some trivial misprints and references have been correcte

    The quest for low-energy supersymmetry and the role of high-energy e+e−e^+e^- colliders

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    The motivations for low-energy supersymmetry and the main features of the minimal supersymmetric extension of the Standard Model are reviewed. Possible non-minimal models and the issue of gauge coupling unification are also discussed. Theoretical results relevant for supersymmetric particle searches at present and future accelerators are presented, with emphasis on the role of a proposed \epem collider with \sqrt{s} = 500 \gev. In particular, recent results on radiative corrections to supersymmetric Higgs boson masses and couplings are summarized, and their implications for experimental searches are discussed in some detail. (Plenary talk at the Workshop on Physics and Experiments with Linear Colliders, Saariselk\"a, Lapland, Finland, 9--14 September 1991)Comment: 44 page

    Beyond the MSSM

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    To increase the predictivity of the Minimal Supersymmetric Standard Model (MSSM), one needs to go to an underlying, more fundamental theory, where at least some of the many MSSM parameters can be determined by symmetries or by dynamics. Progress may come from four-dimensional superstring solutions and their effective supergravities. Summarizing some recent work, we introduce a class of `large-hierarchy-compatible' (LHC) models that could naturally embed a stable hierarchy m_Z ~ m_{3/2} << \mpl. We discuss how in LHC models one may determine: 1) the explicit mass terms of the MSSM, as functions of the gravitino mass; 2) the scales of gauge and supersymmetry breaking, m_Z and m_{3/2}; 3) the heavy-fermion masses. Based on talks given at: the Second IFT Workshop on Yukawa Couplings, Gainesville, Florida, USA, 11--13 February 1994; the XXIXth Rencontres de Moriond, M\'eribel, France, 12--19 March 1994; the First International Conference on Phenomenology of Unification from Present to Future, Rome, Italy, 23--26 March 1994.Comment: 12 A4-pages, no figures (to be LATEXed twice), preprint CERN-TH.7325/9

    One Person\u27s Junk, Another Person\u27s Treasures: Dissolving a Small Law Book Collection

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    Decisions to eliminate a book collection occur for various reasons, including retirement, downsizing a home library, or a sweet deal from an online vendor. Law librarians regularly receive inquiries about the purchase or donation of used law books. Many times these calls originate in a law school’s development office after an attorney school seeks his or her law school’s advice on eliminating a significant career investment. An attorney may turn to a law firm librarian for advice as well

    Museletter: Summer 2003

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    This Issue: On the Move: The Law Library Shifts Entire Collection Hours--Summer 2003https://scholarship.richmond.edu/museletter/1069/thumbnail.jp

    Chapter 9: Fastcase

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    In February 2005, the Virginia State Bar (VSB) Council approved plans to offer all Virginia lawyers free access to an online legal research program through a portal on the VSB\u27s website. Then-Chief Justice Leroy Rountree Hassell, Sr., considered access to an online research tool a high priority for Virginia attorneys and urged the VSB to provide this kind of service. On June 13, 2005, the Virginia Supreme Court adopted a formal Rule of Court directing the VSB to contract to provide online computerized legal resea1·ch services to its members. 1 In February 2006, the VSB gave its notice of intent to award a contract to Fastcase, which is headquartered in Washington, D.C. Twenty-four other bar associations provide Fastcase to their members. Other specialty groups, such as the Cincinnati Law Library, the National Association of Consumer Bankruptcy Attorneys, and the Social Law Library network in Boston, offer Fastcase access as well. State technology experts at www.virginia.gov worked with the VSB to set up a secure, members-only, sign-in procedure for access to Fastcase on the website. This sign-in method will allow possible future access to other online member services

    Museletter: January 2000

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    Table of Contents: From Thermal Paper to Spam: Reflections on the Legal Community\u27s Tango with Online Information Access by Paul Birch Library Hours Reference and Computer Services Staff Team Up to Provide Series of Brownbag Refresher Courses Library Relaxes Drink Container Policy ONE-L Lexis and Westlaw Training Schedule Recent Faculty Publicationshttps://scholarship.richmond.edu/museletter/1041/thumbnail.jp

    Museletter: September 2000

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    Table of Contents: UCITA: What Does it Mean to Libraries and Researchers by Timothy L. Coggins Library Hours September is Constitution Month We Three Computer Geeks: Meet the Computer Services Staff by Kim Wiseman Website of the Month: NOAA\u27s Hurricane Center, http://www.noaa.gov/https://scholarship.richmond.edu/museletter/1047/thumbnail.jp

    Museletter: November/December 1999

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    Table of Contents: A in Ping-Pong, F in Torts: Dean William Taylor Muse, 1906-1971 UR Readies for Y2K: System Shutdown to Occur December 31 by Alison Merner, Network Administrator Thanks Law Library Student Employees! Internet Sites Give Bookstores Competition Law Library Dedicates Virginia Collection to James C. Roberts Let\u27s Talk Turkey: Census Bureau Facts for Features [Library Hours]https://scholarship.richmond.edu/museletter/1040/thumbnail.jp
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