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    Measurement of the Azimuthal Anisotropy of Neutral Pions in Pb-Pb Collisions at √s(NN)=2.76  TeV

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    Issue Date
    2013-01-22
    Author
    Baringer, Philip S.
    Bean, Alice
    Benelli, Gabriele
    Kenny, R. P., III
    Murray, Michael J.
    Noonan, Danny
    Sanders, Stephen J.
    Stringer, Robert W.
    Tinti, Gemma
    Wood, Jeffrey Scott
    Zhukova, Victoria
    Chatrchyan, S.
    Khachatryan, V.
    Sirunyan, A. M.
    Tumasyan, A.
    Adam, W.
    Aguilo, E.
    Bergauer, T.
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    First measurements of the azimuthal anisotropy of neutral pions produced in Pb-Pb collisions at a center-of-mass energy of √s(NN)=2.76  TeV are presented. The amplitudes of the second Fourier component (v(2)) of the π(0) azimuthal distributions are extracted using an event-plane technique. The values of v(2) are studied as a function of the neutral pion transverse momentum (p(T)) for different classes of collision centrality in the kinematic range 1.6<p(T)<8.0  GeV/c, within the pseudorapidity interval |η|<0.8. The CMS measurements of v(2)(p(T)) are similar to previously reported π0 azimuthal anisotropy results from √sNN=200  GeV Au-Au collisions at RHIC, despite a factor of ∼14 increase in the center-of-mass energy. In the momentum range 2.5<pT<5.0  GeV/c, the neutral pion anisotropies are found to be smaller than those observed by CMS for inclusive charged particles.
    Description
    This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.042301.
    URI
    http://hdl.handle.net/1808/15713
    DOI
    https://doi.org/10.1103/PhysRevLett.110.042301
    ISSN
    0031-9007
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    S. Chatrchyan et al. (CMS Collaboration). (2013). "Measurement of the Azimuthal Anisotropy of Neutral Pions in Pb-Pb Collisions at √s(NN)=2.76  TeV." Physical Review Letters, 110(4):042301. http://dx.doi.org/10.1103/PhysRevLett.110.042301.

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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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