Higher twist analysis of the proton g1 structure function
Abstract
We perform a global analysis of all available spin-dependent proton structure function data, covering a large range of Q2, 1 < Q2 < 30 GeV2, and calculate the lowest moment of the g1 structure function as a function of Q2. From the Q2 dependence of the lowest moment we extract matrix elements of twist-4 operators, and determine the color electric and magnetic polarizabilities of the proton to be E = 0.026 +- 0.015 (stat) + 0.021/-0.024 (sys) and B = -0.013 -+ 0.007 (stat) - 0.010/+0.012 (sys), respectively.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.