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Measurement of prompt $D$-meson production in $p-Pb$ collisions at $\sqrt{s_{NN}}$ = 5.02 TeV

The ALICE collaboration
Phys.Rev.Lett. 113 (2014) 232301, 2014

Abstract (data abstract)
CERN-LHC. The pT-differential production cross sections of the prompt charmed mesons D0, D+, D*+ and Ds+ and their charge conjugate in the rapidity interval -0.96 < y_{cms} < 0.04 were measured in p-Pb collisions at a centre-of-mass energy sqrt(sNN) = 5.02 TeV with the ALICE detector at the LHC. The nuclear modification factor R(pPb), quantifying the D-meson yield in p-Pb collisions relative to the yield in pp collisions scaled by the number of binary nucleon-nucleon collisions, is compatible within the 15-20% uncertainties with unity in the transverse momentum interval 1 < pT < 24 GeV. No significant difference among the R(pPb) of the four D-meson species is observed. The results are described within uncertainties by theoretical calculations that include initial-state effects. The measurement adds experimental evidence that the modification of the momentum spectrum of D mesons observed in Pb-Pb collisions with respect to pp collisions is due to strong final-state effects induced by hot partonic matter. UPDATE (03 JUL 2015): swapped upper/lower systematic uncertainties and enlarged global normalisation uncertainty due to variation of the uncertainty of the luminosity determination.

  • Table 1

    Data from Figure 1

    10.17182/hepdata.63866.v1/t1

    pT-differential cross section of prompt D0 mesons measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 2

    Data from Figure 1

    10.17182/hepdata.63866.v1/t2

    pT-differential cross section of prompt D+ mesons measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 3

    Data from Figure 1

    10.17182/hepdata.63866.v1/t3

    pT-differential cross section of prompt D*+ mesons measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 4

    Data from Figure 1

    10.17182/hepdata.63866.v1/t4

    pT-differential cross section of prompt Ds+ mesons measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 5

    Data from Figure 2

    10.17182/hepdata.63866.v1/t5

    Nuclear modification factor R(pPb) of prompt D0 mesons vs. pT measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 6

    Data from Figure 2

    10.17182/hepdata.63866.v1/t6

    Nuclear modification factor R(pPb) of D+ mesons vs. pT measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 7

    Data from Figure 2

    10.17182/hepdata.63866.v1/t7

    Nuclear modification factor R(pPb) of D*+ mesons vs. pT measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 8

    Data from Figure 2

    10.17182/hepdata.63866.v1/t8

    Nuclear modification factor R(pPb) of Ds+ mesons vs. pT measured in p-Pb collisions in the rapidity interval -0.96<y_cms<0.04.

  • Table 9

    Data from Figure 3

    10.17182/hepdata.63866.v1/t9

    Average of D0, D+, D*+ nuclear modification factors R(pPb) vs. pT.

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