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- Title
RADIATIVE PRODUCTION OF LIGHTEST NEUTRALINOS IN e<sup>+</sup>e<sup>-</sup> COLLISIONS IN SUPERSYMMETRIC GRAND UNIFIED MODELS.
- Authors
PANDITA, P. N.; PATRA, MONALISA
- Abstract
We study the production of the lightest neutralinos in the radiative process in supersymmetric models with grand unification. We consider models wherein the standard model (SM) gauge group SU(3)c ×SU(2)L ×U(1)Y is unified into the grand unified gauge groups SU(5) or SO(10). We study this process at energies that may be accessible at a future International Linear Collider (ILC). We compare and contrast the dependence of the signal cross-section on the grand unified gauge group, and different representations of the grand unified gauge group, into which the SM gauge group is unified. We carry out a comprehensive study of the radiative production process which includes higher-order QED corrections in our calculations. In addition we carry out a detailed study of the background to the signal process coming from the SM radiative neutrino production , as well as from the radiative production of the scalar partners of the neutrinos (sneutrinos) . The latter can be a major supersymmetric background to the radiative production of neutralinos when the sneutrinos decay invisibly. It is likely that the radiative production of the lightest neutralinos may be a viable channel to study supersymmetric partners of the SM particles at the first stage of an ILC, where heavier sparticles may be too heavy to be produced in pairs.
- Subjects
NEUTRINO interactions; QUANTUM electrodynamics; GAUGE field theory; SUPERSYMMETRY; NUCLEAR models; NUCLEAR cross sections; LINEAR accelerators; GRAND unified theories (Nuclear physics); RADIATION
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2012, Vol 27, Issue 29, p-1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X12501722