Journal article
Measurement of the Azimuthal Anisotropy of Neutral Pions in Pb-Pb Collisions at √sNN=2.76 TeV
Physical review letters, Vol.110(4), 042301
01/01/2013
DOI: 10.1103/PhysRevLett.110.042301
Abstract
First measurements of the azimuthal anisotropy of neutral pions produced in PbPb collisions at a center-of-mass energy of $\sqrt{s_{NN}}$ = 2.76 TeV are presented. The amplitudes of the second Fourier component ($v_2$) of the neutral pion 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, within the pseudorapidity interval |$\eta$| < 0.8. The CMS measurements of $v_2(p_T)$ are similar to previously reported neutral pion azimuthal anisotropy results from $\sqrt{s_{NN}}$ = 200 GeV AuAu collisions at RHIC, despite a factor of about 14 increase in the center-of-mass energy. In the momentum range 2.5 < $p_T$ < 5.0 GeV, the neutral pion anisotropies are found to be smaller than those observed by CMS for inclusive charged particles.
Details
- Title: Subtitle
- Measurement of the Azimuthal Anisotropy of Neutral Pions in Pb-Pb Collisions at √sNN=2.76 TeV
- Creators
- S ChatrchyanVuko BrigljevićSenka ĐurićKrešo KadijaJelena LuetićSrećko MorovićCMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.110(4), 042301
- DOI
- 10.1103/PhysRevLett.110.042301
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Publisher
- American Physical Society
- Grant note
- 098-0982887-2878 / Ministry of Science, Education and Sports of the Republic of Croatia (MSES) (irb_hr______::MZOS)
- Language
- English
- Date published
- 01/01/2013
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199802802771
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