Measurement of D-meson production in pp collisions with ALICE at the LHC

Abstract

The ${\text{p}}_T$-differential cross section of D mesons in the rapidity range $|y|<0.5$ was measured in pp collisions at $\sqrt{s}$ = 2.76, 7 and 8 TeV. D mesons were reconstructed in their hadronic decay channels by means of the invariant mass analysis. The D-meson production cross sections is compared among different energies and to pQCD calculations. Also the prompt D meson are studied as a function of the multiplicity of charged articles produced in inelastic pp collisions at a centre-of-mass energy of $\sqrt{s}$ = 7 TeV. The measurements are compared with model calculations.

3 pages, 5 figures, XXII DAE-BRNS High Energy Physics Symposium 2016