Hadron Structure on the Back of an Envelope.

Thomas, A. W. ; Young, R. D. ; Leinweber, D. B.

Technical Information Center Oak Ridge Tennessee

关键词: Hadrons;    Magnetic moments;    Charge radius;    Charge symmetry violation;    Quantum chromodynamics;   

RP-ID  :  DE2005850111

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In order to remove a little of the mysticism surrounding the issue of strangeness in the nucleon, we present simple, physically transparent estimates of both the strange magnetic moment and charge radius of the proton. Although simple, the estimates are in quite good agreement with sophisticated calculations using the latest input from lattice QCD. We further explore the possible size of systematic uncertainties associated with charge symmetry violation (CSV) in the recent precise determination of the strange magnetic moment of the proton. We find that CSV acts to increase the error estimate by 0.003 mu(sub N) such that G(sub M)(sup 8)=-0.046 (+-) 0.022 mu(sub N).