Abstract
We present our results for a flavor-dependent EMC effect based on the nIMParton nuclear PDFs, in which the $x$-dependence is described with a nucleon swelling model. The nuclear correction from nucleon swelling is considered through a modification of the initial valence quark distributions instead of a dynamical rescaling. To probe the flavor-dependence of the model, the experimental observables are calculated applying nIMParton nuclear modifications for various experiments: parity-violating deep inelastic scattering on nuclear target, pion-induced Drell-Yan, and W-boson production in proton-nucleus collisions. In addition, we present the expected effect for the spectator-tagged deep inelastic scattering process, which will be performed by the CLAS12 collaboration with the ALERT detector.
Highlights
Since the discovery of the European Muon Collaboration (EMC) effect [1], both particle and nuclear physics communities have struggled to understand the impact of the nuclear medium and the binding of nucleons on the nucleon structure
The Q2 dependence of structure function ratio is found to be weak in experiments, and the Q2 dependence of nuclear parton distribution functions (PDFs) obeys the quantum chromodynamics (QCD)-based DGLAP (Dokshitzer-Gribov-LipatovAltarelli-Parisi) evolution which governs the Q2 dependence of free nucleon PDFs as well [8,9,10]
These different model predictions can be verified with the apparatuses at the Large Hadron Collider (LHC) or Relativisitic Heavy ion Collider (RHIC) in the runs of high-energy proton-nucleus collisions under high luminosities
Summary
Since the discovery of the European Muon Collaboration (EMC) effect [1], both particle and nuclear physics communities have struggled to understand the impact of the nuclear medium and the binding of nucleons on the nucleon structure. Several high-energy scattering processes are suggested to observe the flavor dependence of the EMC effect [14,15,16] They are the parity-violating deep inelastic scattering (PVDIS) process with a polarized electron beam [14], the pion-induced Drell-Yan (DY) processes with pion beams [15], and the W -boson production with highenergy proton-nucleus collisions [16]. In these experiments, the sensitivities to the flavor dependence of the EMC effect are all discussed under the CBT model.
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