TY - JOUR
T1 - Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at $\sqrt{s_{\mathrm {NN}}}=2.76$ TeV with the ATLAS detector
AU - Clark, Philip James
AU - Martin, Victoria Jane
AU - Mills, Corrinne
AU - Collaboration, Atlas
PY - 2014/8/13
Y1 - 2014/8/13
N2 - The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{{s}_{\mathrm {NN}}}=2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_2$ , was measured in the pseudorapidity range $|\eta |\le 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{\mathrm {T}}$ , thus reducing the uncertainty in $v_2$ integrated over $p_{\mathrm {T}}$ , a $1~\mu \hbox {b}^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_2$ is compared to other measurements obtained with higher $p_{\mathrm {T}}$ thresholds. The integrated elliptic flow is weakly decreasing with $|\eta |$ . The integrated $v_2$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
AB - The integrated elliptic flow of charged particles produced in Pb+Pb collisions at $\sqrt{{s}_{\mathrm {NN}}}=2.76$ TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, $v_2$ , was measured in the pseudorapidity range $|\eta |\le 2.5$ with the event-plane method. In order to include tracks with very low transverse momentum $p_{\mathrm {T}}$ , thus reducing the uncertainty in $v_2$ integrated over $p_{\mathrm {T}}$ , a $1~\mu \hbox {b}^{-1}$ data sample recorded without a magnetic field in the tracking detectors is used. The centrality dependence of the integrated $v_2$ is compared to other measurements obtained with higher $p_{\mathrm {T}}$ thresholds. The integrated elliptic flow is weakly decreasing with $|\eta |$ . The integrated $v_2$ transformed to the rest frame of one of the colliding nuclei is compared to the lower-energy RHIC data.
U2 - 10.1140/epjc/s10052-014-2982-4
DO - 10.1140/epjc/s10052-014-2982-4
M3 - Article
SN - 1434-6044
VL - C74
SP - 2982
JO - The European Physical Journal C
JF - The European Physical Journal C
IS - 8
M1 - Aad:2014eoa
ER -