Shapes of the proton

被引：56

作者：

Miller, GA ^{[1
]}

机构：

[1] Univ Washington, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW C | 2003年 / 68卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.68.022201

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A model proton wave function, constructed using Poincare invariance and constrained by recent electromagnetic form factor data, is used to study the shape of the proton. Spin-dependent quark densities are defined as matrix elements of density operators in proton states of definite polarization, and shown to have an infinite variety of nonspherical shapes. For high momentum quarks with spin parallel to that of the proton, the shape resembles that of a peanut, but for quarks with antiparallel spin the shape is that of a bagel.

引用

页码：222011 / 222015

页数：5

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