Parton fluxes and virtual pions in heavy nuclei
Giorgio Calucci
TL;DR
This paper investigates the impact of virtual pions in heavy nuclei on parton fluxes, finding their contribution to be small despite including resonance effects, which refines understanding of nuclear parton distributions.
Contribution
It introduces an analysis of virtual pion clouds' effects on parton fluxes in heavy nuclei, highlighting their minimal impact.
Findings
Virtual pions contribute minimally to the total parton flux.
Resonance effects do not significantly alter the pion contribution.
The parton flux from heavy nuclei is not just a sum of individual nucleons.
Abstract
The partonic flux originated from a heavy nucleus is not the mere sum of the fluxes coming from the individual nucleons. There are various effects that give rise to modifications. One of these effects is here investigated i.e. the presence of a cloud of virtual pions co-moving with the nucleus. It is found that the contribution of these virtual particles to the total parton flux should be rather small even if one includes the contribution of resonances.
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