746 research outputs found

    Highlights of the Foundation Center's 1999 Study: Arts Funding 2000 - Funder Perspectives on Current And Future Trends

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    Arts Funding 2000: Funder Perspectives on Current and Future Trends represents the Foundation Center's fourth examination of the role of foundation and corporate grantmakers in supporting arts and culture. Developed in partnership with Grantmakers in the Arts (GIA), the new study explores the current practice of arts funding viewed through the eyes of grantmakers. GIA's purpose in sponsoring this research was to learn about the changing context for arts funding and about the ways grantmakers are responding to changes in the arts field and within their own organization

    Innovation in Action: Three Case Studies from the Intersections of Arts and Social Justice in EmcArts' Innovation Labs

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    Featuring Alternate ROOTS, Jane Addams Hull-House Museum, and The Theater Offensive, this rich and rigorous publication examines the contours, possibilities and limitations of innovation and adaptive change at the intersection of arts and social justice.In these three stories, and the introductory essay by Caron Atlas of Arts and Democracy, you'll find examples of strategies that increase organizational alignment with social justice values like equity, self-determination, inclusion and belonging. You'll also find new approaches to community and stakeholder engagement, and many emergent questions about the productive messiness of adaptive change

    Investing in Creativity: A Study of the Support Structure for U.S. Artists

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    Documents and analyzes the environment of support for individual artists. Provides a framework for analysis of various dimensions of the support structure, nationally and in specific sites across the U.S. Includes support programs and policy initiatives

    Absorbing systematic effects to obtain a better background model in a search for new physics

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    This paper presents a novel approach to estimate the Standard Model backgrounds based on modifying Monte Carlo predictions within their systematic uncertainties. The improved background model is obtained by altering the original predictions with successively more complex correction functions in signal-free control selections. Statistical tests indicate when sufficient compatibility with data is reached. In this way, systematic effects are absorbed into the new background model. The same correction is then applied on the Monte Carlo prediction in the signal region. Comparing this method to other background estimation techniques shows improvements with respect to statistical and systematical uncertainties. The proposed method can also be applied in other fields beyond high energy physics

    The Higgs boson mass in a natural MSSM with nonuniversal gaugino masses at the GUT scale

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    We identify a parameter region where the mass of the lightest CP-even Higgs boson resides in 124.4126.8124.4-126.8 GeV, and at the same time the degree of tuning a Higgsino-mass parameter (so-called μ\mu-parameter) is relaxed above 10% in the minimal supersymmetric standard model (MSSM) with soft supersymmetry breaking terms, by solving the full set of one-loop renormalization group equations numerically. It is found that certain nonuniversal values of gaugino-mass parameters at the so-called grand unification theory (GUT) scale 1016\sim 10^{16} GeV are important ingredients for the MSSM to predict, without a severe fine-tuning, the Higgs boson mass 125\sim 125 GeV indicated by recent observations at the Large Hadron Collider. We also show a typical superparticle spectrum in this parameter region.Comment: 14 pages, 5 figures, Typos corrected, references and comments adde

    The theory and phenomenology of perturbative QCD based jet quenching

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    The study of the structure of strongly interacting dense matter via hard jets is reviewed. High momentum partons produced in hard collisions produce a shower of gluons prior to undergoing the non-perturbative process of hadronization. In the presence of a dense medium this shower is modified due to scattering of the various partons off the constituents in the medium. The modified pattern of the final detected hadrons is then a probe of the structure of the medium as perceived by the jet. Starting from the factorization paradigm developed for the case of particle collisions, we review the basic underlying theory of medium induced gluon radiation based on perturbative Quantum Chromo Dynamics (pQCD) and current experimental results from Deep Inelastic Scattering on large nuclei and high energy heavy-ion collisions, emphasizing how these results constrain our understanding of energy loss. This review contains introductions to the theory of radiative energy loss, elastic energy loss, and the corresponding experimental observables and issues. We close with a discussion of important calculations and measurements that need to be carried out to complete the description of jet modification at high energies at future high energy colliders.Comment: 78 pages, 24 figures, submitted to prog. part. nucl. phy

    Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector

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    The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30

    Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

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    Results of a search for H → τ τ decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb−1 and 20.3 fb−1 at centre-of-mass energies of √s = 7 TeV and √s = 8 TeV respectively. All combinations of leptonic (τ → `νν¯ with ` = e, µ) and hadronic (τ → hadrons ν) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of µ = 1.43 +0.43 −0.37 is consistent with the predicted Yukawa coupling strength in the Standard Model
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