Quadratic electroweak corrections for polarized Moller scattering Page: 1 of 16
013007 (10 pages)View a full description of this article.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Quadratic electroweak corrections for polarized Msller scattering
Aleksandrs Aleksejevs*
Memorial University, Corner Brook, Canada
Svetlana Barkanovat
Acadia University, Wolfville, Canada
Yury Kolomenskyt
University of California, Berkeley, USA
Eduard Kuraev
Joint Institute for Nuclear Research, Dubna, Russia
Vladimir Zykunov
Belarussian State University of Transport, Gomel, Belarus
The paper discusses the two-loop (NNLO) electroweak radiative corrections to the parity vio-
lating e-e- -> e-e-(y)(yy) scattering asymmetry induced by squaring one-loop diagrams. The
calculations are relevant for the ultra-precise 11 GeV MOLLER experiment planned at Jefferson
Laboratory and experiments at future high-energy colliders. The imaginary parts of the amplitudes
are taken into consideration consistently in both the infrared-finite and divergent terms. The size
of the obtained partial correction is significant, which indicates a need for a complete study of the
two-loop electroweak radiative corrections in order to meet the precision goals of future experiments.
PACS numbers: 12.15.Lk, 13.88.+e, 25.30.Bf
Keywords:
I. INTRODUCTION
Polarized Moller scattering has been a well-studied low-energy reaction for close to eight
decades now [1], but has attracted especially active interest from both experimental and theo-
retical communities due to the recent rapid progress in measuring spin-dependent observables.
Since the nineties the interaction has allowed the high-precision determination of the electron-
beam polarization at SLC [2], SLAC [3] [4], JLab [5] and MIT-Bates [6]. A Moller polarimeter
may also be useful in future experiments planned at the ILC [7]. In addition, polarized Moller
scattering can be an excellent tool for measuring parity-violating (PV) weak interaction asym-
metries [8].
The first observation of Parity Violation in Moller scattering was made by the E-158 ex-
periment at SLAC [9], which studied Moller scattering of 45- to 48-GeV polarized electrons
on the unpolarized electrons in a hydrogen target. Its result at low Q2 = 0.026 GeV2,
APy = (1.31 + 0.14 (stat.) + 0.10 (syst.)) x 10 [10] allowed one of the most important
parameters in the Standard Model - the sine of the Weinberg angle - to be determined with an
*Electronic address: aaleksejevs@swgc.mun.ca
tElectronic address: svetlana.barkanova@acadiau.ca
tElectronic address: yury Aphysics.berkeley.edu
Electronic address: kuraev@theor.jinr.ru
Electronic address: vladimir.zykunov@cern.ch
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
A. Aleksejevs, S. Barkanova, Y. Kolomensky, E. Kuraev, V. Zykunov. Quadratic electroweak corrections for polarized Moller scattering, article, January 1, 2012; Newport News, Virginia. (https://digital.library.unt.edu/ark:/67531/metadc836282/m1/1/: accessed May 4, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.