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    Event-by-event mean ppT fluctuations in pp and Pb–Pb collisions at the LHC

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    Tapia_pt_fluctuations2014.pdf (859.4Kb)
    Issue Date
    2014-10-15
    Author
    ALICE Collaboration
    Tapia Takaki, Daniel
    Publisher
    Springer Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    Event-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at s√ = 0.9, 2.76 and 7 TeV, and Pb–Pb collisions at sNN−−−√ = 2.76 TeV are studied as a function of the charged-particle multiplicity using the ALICE detector at the LHC. Dynamical fluctuations indicative of correlated particle emission are observed in all systems. The results in pp collisions show little dependence on collision energy. The Monte Carlo event generators PYTHIA and PHOJET are in qualitative agreement with the data. Peripheral Pb–Pb data exhibit a similar multiplicity dependence as that observed in pp. In central Pb–Pb, the results deviate from this trend, featuring a significant reduction of the fluctuation strength. The results in Pb–Pb are in qualitative agreement with previous measurements in Au–Au at lower collision energies and with expectations from models that incorporate collective phenomena.
    Description
    This is the published version.
    URI
    http://hdl.handle.net/1808/19347
    DOI
    https://doi.org/10.1140/epjc/s10052-014-3077-y
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    • Physics and Astronomy Scholarly Works [1652]
    Citation
    ALICE Collaboration. "Event-by-event mean ppT fluctuations in pp and Pb–Pb collisions at the LHC." The European Physical Journal C. October, 2014: v74(10). http://dx.doi.org/10.1140/epjc/s10052-014-3077-y

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    785-864-8983

    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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