Aug 12 – 18, 2012
US/Eastern timezone

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Elliptic flow of high transverse momentum electrons from heavy-flavour decays in Pb-Pb collisions at sqrt(s_NN)=2.76 TeV measured by ALICE

Aug 16, 2012, 4:00 PM
Regency 1/3 and Ambassador

Regency 1/3 and Ambassador

Poster Heavy flavor and quarkonium production Poster Session Reception


Denise Aparecida Moreira De Godoy (Universidade de Sao Paulo (BR))


Heavy quarks, charm and bottom, are produced in early stages of heavy-ion collisions. Propagating through the created matter they serve as a probe of the dynamics of the strongly-interacting, hot and dense plasma of quarks and gluons (QGP). The transverse momentum dependence of the elliptic flow (v2) of heavy quarks is sensitive to the properties of the QGP. A non-zero v2 of low transverse momentum electrons from semi-leptonic decays of heavy flavours indicates a collective motion of the heavy quarks with respect to the bulk of the created matter. Whereas, the high transverse momentum v2 is sensitive to the path length dependence of heavy-quark energy loss within the QGP. We present measurements of heavy-flavour electron v2 in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV by the ALICE experiment at mid-rapidity. In 2011, the Electromagnetic Calorimeter (EMCal) provided a dedicated online trigger for measurements of high momentum electrons in Pb-Pb collisions. The electrons were identified in these triggered events using the Time Projection Chamber (TPC) and the Electromagnetic Calorimeter (EMCal). The heavy-flavour electron v2 will be shown as a function of the transverse momentum of the decay electrons.

Primary author

Collaboration ALICE (CERN, Geneva, Switzerland)


Denise Aparecida Moreira De Godoy (Universidade de Sao Paulo (BR))

Presentation materials