Impact of fully coherent energy loss on heavy meson production in pA collisions

Abstract

Hadron production in proton-nucleus (pA) collisions was previously shown to be suppressed by medium-induced fully coherent energy loss (FCEL). We show that the quenching of D and B mesons in pPb collisions at the LHC due solely to FCEL is, at least, on par with other nuclear effects such as gluon shadowing or saturation. This is consistent with previous findings for both quarkonium and light hadron production in pA collisions, emphasising that FCEL effects need to be included for a reliable understanding of hadron production measurements in pA collisions.

D-meson production in high energy pA collisions within the QCD color dipole transverse momentum representation

“…It has been demonstrated that the FCEL effects on D and B production is quite relevant and similar to those quantified in quarkonium and light hadron production. It is argued that the effect corresponds to about half of the nuclear suppression measured at the LHC at forward rapidities and low P T [76]. After inspection, our results at midrapidity are compatible with those studies.…”

“…the fully coherent energy loss (FCEL) in cold nuclear matter on the open heavy-flavour production has been investigated in Ref. [76]. It has been demonstrated that the FCEL effects on D and B production is quite relevant and similar to those quantified in quarkonium and light hadron production.…”

Open heavy flavor production in $p$Pb and PbPb collisions at LHCb

“…4, where 10 panels report the results in different 𝑦 * subintervals. The results are compared with several theoretical calculations: reweighted EPPS16 [8] and nCTEQ15 [9] nPDF sets calculated with HELAC-Onia approach [6,7], two calculations based on the CGC effective field theory [10][11][12] and a calculation estimates 𝐷 0 suppression caused by medium-induced fully coherent energy loss (FCEL) [13]. Results are also compared with the LHCb 𝐷 0 measurement at √ 𝑠 NN = 5.02 TeV [14].…”

Prompt photon production in proton–nucleus collisions at LHC: a comparison among color dipole models*

“…This is called the initial energy loss effect. In recent years, it is still an ongoing subject on both experimental and theoretical sides [24][25][26]. Therefore the initial energy loss effect is also considered.…”