CPViolation in Unpolarizede+e−→Charginos at One-Loop Level

2007/04/30 by P. Osland, A. Vereshagin · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.76.036001

published as Phys.Rev.D76:036001,2007; Erratum-ibid.D76:036001,2007 · similar to Phys. Rev. D version, but corrected figs. 4, 5, 6 (factor four)

openalex publication_date 2007/08/03 · arxiv created 2007/10/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study CP violation in e⁺e^\ensuremath-\ensuremath→\stackrel\texttildelow\ensuremathχ_i⁺\stackrel\texttildelow\ensuremathχ_j^\ensuremath- in the framework of the minimal supersymmetric standard model. Though the cross section of this process is CP-even at the tree level even for polarized electron-positron beams, we show that it contains a CP-odd part at one-loop order and there are CP-odd observables that can in principle be measured even using unpolarized electron-positron beams. The relevant diagram calculations are briefly discussed, and the results of selected (box) diagram computations are shown.

Citations

• CPviolation at a linear collider with transverse polarization

Cited by

• CP observables with spin–spin correlations in chargino production
• CPviolation at one loop in the polarization-independent chargino production ine+e−collisions