Hadronic production and decays of charginos and neutralinos in split supersymmetry

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

DOI:https://doi.org/10.1103/PhysRevD.72.055019· OSTI ID:20711489

Cheung, Kingman; Song, Jeonghyeon ^[1]

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1. Department of Physics and NCTS, National Tsing Hua University, Hsinchu, Taiwan (China)

In the scenario recently proposed by Arkani-Hamed and Dimopoulos, the supersymmetric scalar particles are all very heavy, at least of the order of 10{sup 9} GeV but the gauginos, Higgsino, and one of the CP-even neutral Higgs bosons remain light under a TeV. In addition to gluino production, the first SUSY signature would be pair production of neutralinos and/or charginos. Here we study, with explicit CP violation, the production of neutralinos and charginos at hadronic colliders as well as the possible decay modes. We notice that the branching ratio of the neutralino radiative decay can be sizable unlike the case with light sfermions. In particular, the decay of {chi}-tilde{sub 3}{sup 0}{yields}{chi}-tilde{sub 1}{sup 0}{gamma} has a branching ratio of the order O(1) percent. In colliders, it would give rise to signatures of an isolated single photon plus missing energy.

• OSTI ID: 20711489
• 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
BRANCHING RATIO
CP INVARIANCE
GEV RANGE
HADRONS
HIGGS BOSONS
PAIR PRODUCTION
PHOTONS
RADIATIVE DECAY
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
TEV RANGE