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    Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at s√=7  TeV

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    Baringer_12-20-2010.pdf (336.7Kb)
    Issue Date
    2010-12-20
    Author
    Baringer, Philip S.
    Bean, Alice
    Benelli, Gabriele
    Grachov, Oleg A.
    Murray, Michael J.
    Noonan, Danny
    Radicci, Valeria
    Sanders, Stephen J.
    Wood, Jeffrey Scott
    Zhukova, Victoria
    Khachatryan, V.
    Sirunyan, A. M.
    Tumasyan, A.
    Adam, W.
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at s√=7  TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9  pb−1 collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.
    Description
    This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.262001.
    URI
    http://hdl.handle.net/1808/15620
    DOI
    https://doi.org/10.1103/PhysRevLett.105.262001
    ISSN
    0031-9007
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    V. Khachatryan et al. (CMS Collaboration). (2010). "Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at s√=7  TeV." Physical Review Letters, 105(26):262001. http://dx.doi.org/10.1103/PhysRevLett.105.262001.

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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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