Indirect signatures of CP violation in the processes gamma gamma ->gamma gamma, gamma Z, and ZZ - art. no. 095017

Citation
Jl. Hewett et Fj. Petriello, Indirect signatures of CP violation in the processes gamma gamma ->gamma gamma, gamma Z, and ZZ - art. no. 095017, PHYS REV D, 6409(9), 2001, pp. 5017
Citations number
60
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
6409
Issue
9
Year of publication
2001
Database
ISI
SICI code
0556-2821(20011101)6409:9<5017:ISOCVI>2.0.ZU;2-K
Abstract
This paper studies the utility of the processes gamma gamma-->gamma gamma, gammaZ, and ZZ in searching for sources of CP violation arising from energy scales beyond the production thresholds of planned future colliders. In th e context of an effective Lagrangian approach we consider the most general set of CP odd SU(2)xU(1) operators that give rise to genuinely quartic gaug e boson couplings which can be probed in 2-->2 scattering processes at a yy collider. We study each process in detail, emphasizing the complementary i nformation that is obtained by varying the initial beam polarizations. Fina lly, we compare our results to other constraints in the literature on CP od d gauge boson interactions and quartic gauge boson couplings, the search re aches obtained here are typically stronger and nicely complement previous s tudies which have focused primarily on W boson, top quark, or Higgs boson p roduction.