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Measurement of the azimuthal anisotropy of neutral pions in Pb-Pb collisions at root sNN=2.76 TeV

Abstract: First measurements of the azimuthal anisotropy of neutral pions produced in Pb-Pb collisions at a center-of-mass energy of ffiffiffiffiffiffiffiffi sNN p ¼ 2:76 TeV are presented. The amplitudes of the second Fourier component (v2) of the 0 azimuthal distributions are extracted using an event-plane technique. The values of v2 are studied as a function of the neutral pion transverse momentum (pT) for different classes of collision centrality in the kinematic range 1:6 < pT < 8:0 GeV=c, within the pseudorapidity interval jj < 0:8. The CMS measurements of v2ðpTÞ are similar to previously reported 0 azimuthal anisotropy results from ffiffiffiffiffiffiffiffi sNN p ¼ 200 GeV Au-Au collisions at RHIC, despite a factor of 14 increase in the centerof-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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V

 Fuente: Physical Review Letters, 2013, 110(4), 042301

Editorial: American Physical Society

 Fecha de publicación: 22/01/2013

Nº de páginas: 15

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.110.042301

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.110.042301

Autores/as

CHATRCHYAN, SERGUEI

SHANHUEI CHUANG

MARTA FELCINI

ALBERTO GRAZIANO

CLARA JORDA LOPE

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO

MARIA DEL MAR SOBRON SAÑUDO