The production of electrons from heavy-flavour hadron decays was measured as a function of transverse momentum (pT) in minimum-bias p-Pb collisions at sNN=5.02 TeV using the ALICE detector at the LHC. The measurement covers the pT interval 0.5<pT<12 GeV/c and the rapidity range -1.065<ycms<0.135 in the centre-of-mass reference frame. The contribution of electrons from background sources was subtracted using an invariant mass approach. The nuclear modification factor RpPb was calculated by comparing the pT-differential invariant cross section in p-Pb collisions to a pp reference at the same centre-of-mass energy, which was obtained by interpolating measurements at s=2.76 TeV and s=7 TeV. The RpPb is consistent with unity within uncertainties of about 25%, which become larger for pT below 1 GeV/c. The measurement shows that heavy-flavour production is consistent with binary scaling, so that a suppression in the high-pT yield in Pb-Pb collisions has to be attributed to effects induced by the hot medium produced in the final state. The data in p-Pb collisions are described by recent model calculations that include cold nuclear matter effects.

Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at √sNN=5.02TeV / Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Aleksandrov, D., Alessandro, B., Alexandre, D., Alfaro Molina, R., Alici, A., Alkin, A., Almaraz, J.R.M., Alme, J., Alt, T., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 754:(2016), pp. 81-93. [10.1016/j.physletb.2015.12.067]

Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at √sNN=5.02TeV

BRUNO, Giuseppe Eugenio;
2016

Abstract

The production of electrons from heavy-flavour hadron decays was measured as a function of transverse momentum (pT) in minimum-bias p-Pb collisions at sNN=5.02 TeV using the ALICE detector at the LHC. The measurement covers the pT interval 0.5
2016
http://www.sciencedirect.com/science/journal/03702693
Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at √sNN=5.02TeV / Adam, J., Adamová, D., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Alam, S.N., Aleksandrov, D., Alessandro, B., Alexandre, D., Alfaro Molina, R., Alici, A., Alkin, A., Almaraz, J.R.M., Alme, J., Alt, T., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 754:(2016), pp. 81-93. [10.1016/j.physletb.2015.12.067]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/80513
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