Phenomenology of nonuniversal gaugino masses in supersymmetric grand unified theories

Journal Article · Thu Sep 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.055013· OSTI ID:20711483

Huitu, Katri; Laamanen, Jari ^[1]; Pandita, Pran N ^[2]; Roy, Sourov ^[3]

---

1. High Energy Physics Division, Department of Physical Sciences, P.O. Box 64, FIN-00014 University of Helsinki (Finland)
2. Department of Physics, North-Eastern Hill University, Shillong 793 022 (India)
3. Helsinki Institute of Physics, P.O. Box 64, FIN-00014 University of Helsinki (Finland)

Grand unified theories can lead to nonuniversal boundary conditions for the gaugino masses at the unification scale. We consider the implications of such nonuniversal boundary conditions for the composition of the lightest neutralino as well as for the upper bound on its mass in the simplest supersymmetric grand unified theory based on the SU(5) gauge group. We derive sum rules for neutralino and chargino masses in different representations of SU(5) which lead to different nonuniversal boundary conditions for the gaugino masses at the unification scale. We also consider the phenomenological implications of the nonuniversal gaugino masses arising from a grand unified theory in the context of large hadron collider. In particular we investigate the detection of heavy neutral Higgs bosons H{sup 0}, A{sup 0}from H{sup 0}, A{sup 0}{yields}{chi}-tilde{sub 2}{sup 0}{chi}-tilde{sub 2}{sup 0}{yields}4l and study the possibilities of detecting the neutral Higgs bosons in cascade decays, including the decays {chi}-tilde{sub 2}{sup 0}{yields}h{sup 0}(H{sup 0},A{sup 0}){chi}-tilde{sub 1}{sup 0}{yields}bb{chi}-tilde{sub 1}{sup 0}.

• OSTI ID: 20711483
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUNDARY CONDITIONS
CERN LHC
GAUGE INVARIANCE
GRAND UNIFIED THEORY
HIGGS BOSONS
PARTICLE DECAY
REST MASS
SPARTICLES
SU-5 GROUPS
SUM RULES
SUPERSYMMETRY