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    Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at sqrt(s) = 7 TeV

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    Bean_cross_sections2014.pdf (903.0Kb)
    Issue Date
    2014-11-12
    Author
    CMS Collaboration
    Bean, Alice
    Publisher
    Springer Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at s√=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0fb−1 collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25GeV respectively, in the pseudorapidity range |η|<2.5, |η|∉[1.44,1.57] and with an angular separation ΔR>0.45, is 17.2±0.2(stat)±1.9(syst)±0.4(lumi) \,pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics.
    Description
    This is the published version.
    URI
    http://hdl.handle.net/1808/19345
    DOI
    https://doi.org/10.1140/epjc/s10052-014-3129-3
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    CMS Collaboration. "Measurement of Differential Cross Sections for the Production of a Pair of Isolated Photons in Pp Collisions at S√=7TeV." The European Physical Journal C (2014): v74(11). http://dx.doi.org/10.1140/epjc/s10052-014-3129-3

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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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