Open charm production in high multiplicity proton-proton events at the LHC

Abstract

We present the dependence of $D$ production on the charged particle multiplicity in proton-proton collisions at LHC energies. We show that, in a framework of source coherence, the open charm production exhibits a growth with the multiplicity which is stronger than linear in the high density domain. This departure from linearity was previously observed in the $J/\psi$ inclusive data from proton-proton collisions at 7 TeV and was successfully described in our approach. Our assumption, the existence of coherence effects present in proton-proton collisions at high energy, applies for high multiplicity proton-proton collisions in the central rapidity region and should affect any hard observable.

arXiv comment7 pages, 2 figures

References in corpus (1)

• J/Psi production as a function of charged particle multiplicity in pp collisions at sqrt{s}=7 TeV with the ALICE experiment

Cited by in corpus (5)

• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• Measurement of charm and beauty production at central rapidity versus charged-particle multiplicity in proton-proton collisions at $\sqrt{\text{s}}=7$ TeV
• Event engineering studies for heavy flavor production and hadronization in high multiplicity hadron-hadron and hadron-nucleus collisions
• Measurement of D-meson production versus multiplicity in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Measurement of open heavy-flavour production as a function of charged-particle multiplicity with ALICE at the LHC