English

Color transparency in hard $pd$ collisions

Nuclear Theory 2024-09-13 v1 High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Experiment

Abstract

As one of the predictions of perturbative QCD, the effect of color transparency has been the focus of attention in the community studying modifications of hadrons in nuclear medium for several decades. The search for this effect in reactions involving heavy nuclei can be complicated by uncertainties in nuclear characteristics (nucleon density distributions and wave functions), which can affect the interpretation of experiments. In this work, we consider the reaction d(p,pp)nd(p,pp)n at plab=15p_{\rm lab}=15 GeV/c caused by hard elastic pppp scattering, in which these uncertainties are actually reduced to the behavior of the deuteron wave function at large momenta. It is shown that for transverse momenta of the spectator neutron 0.4\leq 0.4 GeV/c the choice of the deuteron wave function cannot affect the identification of the color transparency effect. A simple method for studying color transparency in dddd collisions is also suggested based on the identification of quasi-free pdpd interactions.

Keywords

Cite

@article{arxiv.2409.07845,
  title  = {Color transparency in hard $pd$ collisions},
  author = {A. B. Larionov},
  journal= {arXiv preprint arXiv:2409.07845},
  year   = {2024}
}

Comments

10 pages, 5 figures, in Russian, accepted in PEPAN

R2 v1 2026-06-28T18:42:11.127Z