Roy, S. M. ; Vengurlekar, A. S. (1976) Upper bounds on the fine structure constant and on nucleon magnetic moments in terms of Compton scattering cross-sections Nuclear Physics B, 114 (3). pp. 449-457. ISSN 0550-3213
![]()
|
PDF
- Author Version
225kB |
Official URL: http://linkinghub.elsevier.com/retrieve/pii/055032...
Related URL: http://dx.doi.org/10.1016/0550-3213(76)90444-2
Abstract
We derive and compare with experimental data the bound α≤−λmp-mpν12/2π2∫∞ν0dν'σtot(ν')/(ν'2+ν12)+2πmp[∫∞ν0ν'2dν'σtot(ν')/(ν'2+ν12){ν'2(dσ/dt)0+πλ2+2ν'|λ|√π√(dσ/dt)0−σ2tot/16π}]−1, where α is the fine-structure constant, mp the proton mass, ν0 the photo-pion production threshold, σtot and (dσ/dt)0 are the unpolarized total hadronic photo-absorption cross section on protons and the unpolarized forward differential cross section for proton Compton scattering at photon-lab energy ν', and λ and ν1 are any real numbers. We derive similar bounds on proton and neutron magnetic moments.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to Elsevier Science. |
ID Code: | 42852 |
Deposited On: | 07 Jun 2011 05:40 |
Last Modified: | 18 May 2016 00:01 |
Repository Staff Only: item control page