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.

arXiv comment18 pages, 5 figures

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• Measurement of the prompt $D^0$ nuclear modification factor in $p$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV
• Observation of strong nuclear suppression in exclusive $J/\psi$ photoproduction in Au$+$Au ultra-peripheral collisions at RHIC
• Inconsistencies in, and short pathlength correction to, $R_{AA}(p_T)$ in $\mathrm{A}+\mathrm{A}$ and $\mathrm{p}+\mathrm{A}$ collisions
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• Depletion of atmospheric neutrino fluxes from parton energy loss
• Physics with high-luminosity proton-nucleus collisions at the LHC
• Coherent gluon radiation: beyond leading-log accuracy