106 research outputs found

    ATLAS and CMS Statistics Wish-List

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    A wish-list of statistics related issues, which were regarded by ATLAS and CMS as requiring a deeper understanding and perhaps the response of a professional statistician, is given

    LHC Statistics for Pedestrians

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    A pedestrians guide aimed at the LHC laymen statisticians is presented. It is not meant to replace any text book but to help the confused physicist to understand the jargon and methods used by HEP Phystatisticians

    Asymptotic formulae for likelihood-based tests of new physics

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    We describe likelihood-based statistical tests for use in high energy physics for the discovery of new phenomena and for construction of confidence intervals on model parameters. We focus on the properties of the test procedures that allow one to account for systematic uncertainties. Explicit formulae for the asymptotic distributions of test statistics are derived using results of Wilks and Wald. We motivate and justify the use of a representative data set, called the "Asimov data set", which provides a simple method to obtain the median experimental sensitivity of a search or measurement as well as fluctuations about this expectation.Comment: fixed typo in equations 75 & 7

    The LHC Discovery Potential of a Leptophilic Higgs

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    In this work, we examine a two-Higgs-doublet extension of the Standard Model in which one Higgs doublet is responsible for giving mass to both up- and down-type quarks, while a separate doublet is responsible for giving mass to leptons. We examine both the theoretical and experimental constraints on the model and show that large regions of parameter space are allowed by these constraints in which the effective couplings between the lightest neutral Higgs scalar and the Standard-Model leptons are substantially enhanced. We investigate the collider phenomenology of such a "leptophilic" two-Higgs-doublet model and show that in cases where the low-energy spectrum contains only one light, CP-even scalar, a variety of collider processes essentially irrelevant for the discovery of a Standard Model Higgs boson (specifically those in which the Higgs boson decays directly into a charged-lepton pair) can contribute significantly to the discovery potential of a light-to-intermediate-mass (m_h < 140 GeV) Higgs boson at the LHC.Comment: 25 pages, LaVTeX, 11 figures, 1 tabl

    Van Landt

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