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    Constraints on Models for the Higgs Boson with Exotic Spin and Parity in VH → Vb¯b Final States

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    Abazov_constraints_on_models2014.pdf (361.6Kb)
    Issue Date
    2014-10-16
    Author
    Abazov, V. M.
    Abbott, B.
    Acharya, B. S.
    Adams, M.
    Adams, T.
    Agnew, J. P.
    Alexeev, G. D.
    Baringer, Philip S.
    Bean, Alice
    Wilson, Graham Wallace
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We present constraints on models containing non-standard-model values for the spin J and parity P of the Higgs boson H in up to 9.7  fb−1 of pp¯ collisions at s√=1.96  TeV collected with the D0 detector at the Fermilab Tevatron Collider. These are the first studies of Higgs boson JP with fermions in the final state. In the ZH→ℓℓbb¯, WH→ℓνbb¯, and ZH→ννbb¯ final states, we compare the standard model (SM) Higgs boson prediction, JP=0+, with two alternative hypotheses, JP=0− and JP=2+. We use a likelihood ratio to quantify the degree to which our data are incompatible with non-SM JP predictions for a range of possible production rates. Assuming that the production rate in the signal models considered is equal to the SM prediction, we reject the JP=0− and JP=2+ hypotheses at the 97.6% CL and at the 99.0% CL, respectively. The expected exclusion sensitivity for a JP=0− (JP=2+) state is at the 99.86% (99.94%) CL. Under the hypothesis that our data are the result of a combination of the SM-like Higgs boson and either a JP=0− or a JP=2+ signal, we exclude a JP=0− fraction above 0.80 and a JP=2+ fraction above 0.67 at the 95% CL. The expected exclusion covers JP=0− (JP=2+) fractions above 0.54 (0.47).
    Description
    This is the published version. Copyright © 2014 American Physical Society
    URI
    http://hdl.handle.net/1808/19246
    DOI
    https://doi.org/10.1103/PhysRevLett.113.161802
    Collections
    • Physics and Astronomy Scholarly Works [1530]
    Citation
    "Constraints on Models for the Higgs Boson with Exotic Spin and Parity in VH→Vbb¯ Final States." Physical Review Letters 113.16 (2014). http://dx.doi.org/10.1103/PhysRevLett.113.161802

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    KU Libraries
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    KU Libraries
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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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