Azimuthally anisotropic distributions of D0, Dþ, and D0þ mesons were studied in the central rapidityregion (jyj < 0:8) in Pb-Pb collisions at a center-of-mass energy sNN 1⁄4 2:76 TeV per nucleon-nucleon collision, with the ALICE detector at the LHC. The second Fourier coefficient v2 (commonly denoted elliptic flow) was measured in the centrality class 30%–50% as a function of the D meson transverse momentum pT , in the range 2–16 GeV=c. The measured v2 of D mesons is comparable in magnitude to that of light-flavor hadrons. It is positive in the range 2 < pT < 6 GeV=c with 5:7' significance, based on the combination of statistical and systematic uncertainties.

D Meson Elliptic Flow in Noncentral Pb-Pb Collisions at sqrt[s_{NN}]=2.76  TeV

ARNALDI, Roberta;BALA, RENU;BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;BIANCHI, LIVIO;BOTTA, Elena;BRUNA, ELENA;BUFALINO, STEFANIA;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;LEONCINO, MARCO;MASERA, Massimo;MILANO, LEONARDO;ORTONA, GIACOMO;RAMELLO, Luciano;RIVETTI, Angelo;RUSSO, RICCARDO;SITTA, Mario;VALLERO, Sara;VERCELLIN, Ermanno;
2013

Abstract

Azimuthally anisotropic distributions of D0, Dþ, and D0þ mesons were studied in the central rapidityregion (jyj < 0:8) in Pb-Pb collisions at a center-of-mass energy sNN 1⁄4 2:76 TeV per nucleon-nucleon collision, with the ALICE detector at the LHC. The second Fourier coefficient v2 (commonly denoted elliptic flow) was measured in the centrality class 30%–50% as a function of the D meson transverse momentum pT , in the range 2–16 GeV=c. The measured v2 of D mesons is comparable in magnitude to that of light-flavor hadrons. It is positive in the range 2 < pT < 6 GeV=c with 5:7' significance, based on the combination of statistical and systematic uncertainties.
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elliptic flow; non-central collisions
B. Abelev;J. Adam;D. Adamová;A. M. Adare;M. M. Aggarwal;G. Aglieri Rinella;M. Agnello;A. G. Agocs;A. Agostinelli;Z. Ahammed;N. Ahmad;A. Ahmad Masoodi;I. Ahmed;S. U. Ahn;S. A. Ahn;I. Aimo;M. Ajaz;A. Akindinov;D. Aleksandrov;B. Alessandro;D. Alexandre;A. Alici;A. Alkin;J. Alme;T. Alt;V. Altini;S. Altinpinar;I. Altsybeev;C. Andrei;A. Andronic;V. Anguelov;J. Anielski;C. Anson;T. Antičić;F. Antinori;P. Antonioli;L. Aphecetche;H. Appelshäuser;N. Arbor;S. Arcelli;A. Arend;N. Armesto;R. Arnaldi;T. Aronsson;I. C. Arsene;M. Arslandok;A. Asryan;A. Augustinus;R. Averbeck;T. C. Awes;J. Äystö;M. D. Azmi;M. Bach;A. Badalà;Y. W. Baek;R. Bailhache;R. Bala;A. Baldisseri;F. Baltasar Dos Santos Pedrosa;J. Bán;R. C. Baral;R. Barbera;F. Barile;G. G. Barnaföldi;L. S. Barnby;V. Barret;J. Bartke;M. Basile;N. Bastid;S. Basu;B. Bathen;G. Batigne;B. Batyunya;P. C. Batzing;C. Baumann;I. G. Bearden;H. Beck;N. K. Behera;I. Belikov;F. Bellini;R. Bellwied;E. Belmont-Moreno;G. Bencedi;S. Beole;I. Berceanu;A. 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