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    Observation of a new boson with mass near 125 GeV in pp collisions at s√=7 and 8 TeV

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    Baringer_6-20-2013.pdf (3.609Mb)
    Issue Date
    2013-06-20
    Author
    Baringer, Philip S.
    Bean, Alice
    Benelli, Gabriele
    Kenny, R. P., III
    Murray, Michael J.
    Noonan, Danny
    Sanders, Stephen J.
    Stringer, Robert W.
    Wood, Jeffrey Scott
    Chatrchyan, S.
    Khachatryan, V.
    Sirunyan, A. M.
    Tumasyan, A.
    Adam, W.
    Bergauer, T.
    Dragicevic, M.
    Publisher
    Springer-Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
    Show full item record
    Abstract
    A detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample corresponds to integrated luminosities up to 5.1 fb(−1) at s√=7 TeV, and up to 5.3 fb(−1) at s√=8 TeV. The results for five Higgs boson decay modes γγ, ZZ, WW, ττ, and bb, which show a combined local significance of 5 standard deviations near 125 GeV, are reviewed. A fit to the invariant mass of the two high resolution channels, γγ and ZZ → 4ℓ, gives a mass estimate of 125.3 ± 0.4 (stat.) ± 0.5 (syst.) GeV. The measurements are interpreted in the context of the standard model Lagrangian for the scalar Higgs field interacting with fermions and vector bosons. The measured values of the corresponding couplings are compared to the standard model predictions. The hypothesis of custodial symmetry is tested through the measurement of the ratio of the couplings to the W and Z bosons. All the results are consistent, within their uncertainties, with the expectations for a standard model Higgs boson.
    Description
    This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP06%282013%29081.
    URI
    http://hdl.handle.net/1808/15647
    DOI
    https://doi.org/10.1007/JHEP06(2013)081
    ISSN
    1029-8479
    Collections
    • Physics & Astronomy Scholarly Works [0]
    Citation
    S. Chatrchyan et al. (The CMS Collaboration). "Observation of a new boson with mass near 125 GeV in pp collisions at s√=7 and 8 TeV." Journal of High Energy Physics, 06(2013):081. http://www.dx.doi.org/10.1007/JHEP06(2013)081.

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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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