English

Estimating proton radius and proportion of other non-perturbative components in the proton by the Maximum Entropy Method

High Energy Physics - Phenomenology 2017-09-04 v4

Abstract

In this paper, we apply the Maximum Entropy Method to estimate the proton radius and determine the valence quark distributions in the proton at extremely low resolution scale Q02^{2}_{0}. Using the simplest functional form of the valence quark distribution and standard deviations of quark distribution functions in the estimation of the proton radius, we obtain a quadratic polynomial for the relationship between the proton radius and the momentum fraction of other non-perturbative components in the proton. The proton radii are approximately equal to the muonic hydrogen experimental result rpr_p = 0.841~fm and the CODATA analysis rpr_p = 0.877 fm when the other non-perturbative components account for 17.5\% and 22.3\% respectively. We propose "ghost  matter""ghost~~matter" to explain the difference in other non-perturbative components (4.8\%) that the electron can detect.

Keywords

Cite

@article{arxiv.1612.06631,
  title  = {Estimating proton radius and proportion of other non-perturbative components in the proton by the Maximum Entropy Method},
  author = {Chengdong Han and Xurong Chen},
  journal= {arXiv preprint arXiv:1612.06631},
  year   = {2017}
}

Comments

6 pages,5 figures