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Estimating proton radius and proportion of other non-perturbative components in the proton by the maximum entropy method

Estimating proton radius and proportion of other non-perturbative components in the proton by the maximum entropy method
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摘要 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.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 rp = 0.841 fm and the CODATA analysis rp = 0.877 fm when the other non-perturbative components account for 17.5% and 22.3% respectively.We propose "ghost matter" to explain the difference in other non-perturbative components(4.8%) that the electron can detect. 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.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 rp = 0.841 fm and the CODATA analysis rp = 0.877 fm when the other non-perturbative components account for 17.5% and 22.3% respectively.We propose "ghost matter" to explain the difference in other non-perturbative components(4.8%) that the electron can detect.
出处 《Chinese Physics C》 SCIE CAS CSCD 2017年第11期28-32,共5页 中国物理C(英文版)
基金 Supported by National Basic Research Program of China(973 Program)(2014CB845406)
关键词 proton radius Maximum Entropy Method other non-perturbative components proton radius Maximum Entropy Method other non-perturbative components
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