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    Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s√=2.76s=2.76 TeV

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    Issue Date
    2015-09-21
    Author
    CMS Collaboration
    Sanders, Stephen J.
    Publisher
    Springer Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|ηjet| < 2) and with transverse momentum 1 ≤ pTjet < 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76 TeV with the CMS experiment at the LHC. The UE activity is measured as a function of pTjet in terms of the average multiplicity and scalar sum of transverse momenta (pT) of charged particles, with |η| < 2 and pT > 0.5 GeV, in the azimuthal region transverse to the highest pT jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. The measurements are compared to previous results at 0.9 and 7 TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics.
    URI
    http://hdl.handle.net/1808/22234
    DOI
    https://doi.org/10.1007/JHEP09(2015)137
    Collections
    • Physics and Astronomy Scholarly Works [1637]
    Citation
    Wang, W. Y., A. H. Chan, and C. H. Oh. "Measurement of the Underlying Event Activity Using Charged-Particle Jets in Protonâ Proton Collisions at $sqrt{s} = 2.76 ; textrm{TeV}$." Advanced Series on Directions in High Energy Physics Massive Neutrinos (2015): 283-94.

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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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