TY - JOUR
T1 - Measurement of D-meson production versus multiplicity in p-Pb collisions at root s(NN)=5.02 TeV
AU - Adam, J.
AU - Adamova, D.
AU - Aggarwal, M.M.
AU - Rinella, G.A.
AU - Agnello, Maria
AU - Agrawal, N.
AU - Ahammed, Z.
AU - U. Ahn, S.
AU - Aiola, S.
AU - Akindinov, A.
AU - Bearden, Ian
AU - Bøggild, Hans
AU - Christensen, Christian Holm
AU - Gulbrandsen, Kristjan Herlache
AU - Gaardhøje, Jens Jørgen
AU - Dalsgaard, Hans Hjersing
AU - Nielsen, Børge Svane
AU - Hansen, Alexander Colliander
AU - Bilandzic, Ante
AU - Chojnacki, Marek
AU - Zaccolo, Valentina
AU - Zhou, You
AU - Bourjau, Christian Alexander
PY - 2016/8/1
Y1 - 2016/8/1
N2 - The measurement of prompt D-meson production as a function of multiplicity in p-Pb collisions at sNN=5.02 TeV with the ALICE detector at the LHC is reported. D0, D+ and D∗+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range −0.96 < ycms< 0.04 and transverse momentum interval 1T<24 GeV/c. The multiplicity dependence of D-meson production is examined by either comparing yields in p-Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions, scaled by the number of binary nucleon-nucleon collisions (nuclear modification factor); as well as by evaluating the per-event yields in p-Pb collisions in different multiplicity intervals normalised to the multiplicity-integrated ones (relative yields). The nuclear modification factors for D0, D+ and D∗+ are consistent with one another. The D-meson nuclear modification factors as a function of the zero-degree energy are consistent with unity within uncertainties in the measured pT regions and event classes. The relative D-meson yields, calculated in various pT intervals, increase as a function of the charged-particle multiplicity. The results are compared with the equivalent pp measurements at s=7 TeV as well as with EPOS 3 calculations.[Figure not available: see fulltext.]
AB - The measurement of prompt D-meson production as a function of multiplicity in p-Pb collisions at sNN=5.02 TeV with the ALICE detector at the LHC is reported. D0, D+ and D∗+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range −0.96 < ycms< 0.04 and transverse momentum interval 1T<24 GeV/c. The multiplicity dependence of D-meson production is examined by either comparing yields in p-Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions, scaled by the number of binary nucleon-nucleon collisions (nuclear modification factor); as well as by evaluating the per-event yields in p-Pb collisions in different multiplicity intervals normalised to the multiplicity-integrated ones (relative yields). The nuclear modification factors for D0, D+ and D∗+ are consistent with one another. The D-meson nuclear modification factors as a function of the zero-degree energy are consistent with unity within uncertainties in the measured pT regions and event classes. The relative D-meson yields, calculated in various pT intervals, increase as a function of the charged-particle multiplicity. The results are compared with the equivalent pp measurements at s=7 TeV as well as with EPOS 3 calculations.[Figure not available: see fulltext.]
U2 - 10.1007/JHEP08(2016)078
DO - 10.1007/JHEP08(2016)078
M3 - Journal article
SN - 1126-6708
VL - 2016
JO - Journal of High Energy Physics (Online)
JF - Journal of High Energy Physics (Online)
IS - 8
M1 - 078
ER -