8,886 research outputs found

    Strangeness Production and Hadron Spectroscopy at HERA

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    An overview of the recent results on strangeness production and spectroscopy from the electron-proton collider experiments H1 and ZEUS at HERA is presented. Production of particles with light and strange quarks is discussed and compared with both theoretical predictions and with data from e+e- experiments. Measurements in the charm sector cover studies of the radially and orbitally excited charm states. Finally, the investigation of exotic states in the strangeness sector at HERA is reviewed.Comment: ICHEP0

    Funding Culture: An Analysis of Historic Site Preservation Policy

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    This paper examines the way in which public funding and tax policies are applied to federally recognized historic preservation sites and how that application influences the a variety of stakeholder communities including tax payers, historical organizations, historic property owners, and municipalities

    All Possible Lightest Supersymmetric Particles in R-Parity Violating mSUGRA Models and their Signals at the LHC

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    We consider minimal supergravity (mSUGRA) models with an additional R-parity violating operator at the grand unification scale. This can change the supersymmetric spectrum leading on the one hand to a sneutrino, smuon or squark as the lightest supersymmetric particle (LSP). On the other hand, a wide parameter region is reopened, where the scalar tau is the LSP. It is vital to know the nature of the LSP, because supersymmetric particles normally cascade decay down to the LSP at collider experiments. We investigate in detail the conditions leading to non-neutralino LSP scenarios. We also present some typical LHC signatures.Comment: 4 pages, 4 figures, submitted for the proceedings of the SUSY09 conferenc

    Measurement of B-Bbar Angular Correlations at s\sqrt{s} 7 TeV with the CMS Experiment

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    Measurements of the angular correlations between beauty and anti-beauty hadrons produced in LHC pp collisions at s=7\sqrt{s}=7 TeV are presented. These results probe for the first time the small angular separation region and show sensitivity to collinear particle emission. The results are compared with predictions based on perturbative QCD calculations at leading and next-to-leading order.Comment: Conference proceedings for XIV International Conference on Hadron Spectroscopy "Hadron 2011"; 5 pages, 4 figure
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