Are we really measuring the phase of the nuclear scattering amplitude?

M. M. Block
Phys. Rev. D 54, 4337 – Published 1 October 1996
PDFExport Citation

Abstract

The interference at small |t| of the Coulomb scattering amplitude fc and the nuclear amplitude fn is used to measure the phase of the nuclear scattering amplitude, and, hence, the ρ value, where ρ(RefnImfn)t=0. The "normal" analysis of p¯p and pp elastic scattering uses a "spinless" Coulomb amplitude, i.e., a Rutherford amplitude (2παt) multiplied by a Coulomb form factor G2(t), an ansatz that pretends that the nucleon does not have any magnetic scattering. In this article, we investigate the role of the anomalous magnetic moment of the nucleon, κ1.79. Given the method of analysis currently used by most published experiments, we conclude that the current experimentally inferred values of ρ for p¯p should be systematically lowered by ≈0.005-0.0100 and, correspondingly, the ρ values for pp should be systematically raised by the same amount. We discuss the theoretical uncertainties and a method of experimentally minimizing them.

  • Received 3 April 1996

DOI:https://doi.org/10.1103/PhysRevD.54.4337

©1996 American Physical Society

Authors & Affiliations

M. M. Block

  • Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208

References (Subscription Required)

Click to Expand
Issue

Vol. 54, Iss. 7 — 1 October 1996

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×