Sparticle spectrum and phenomenology in split supersymmetry: Some possibilities

Journal Article · Tue Feb 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.035004· OSTI ID:20705957

Mukhopadhyaya, Biswarup; SenGupta, Soumitra ^[1]

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1. Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad - 211 019 (India)

We investigate the split supersymmetry (SUSY) scenario recently proposed by Arkani-Hamed and Dimopoulos, where the scalars are heavy but the fermions are within the TeV range. We show that the sparticle spectrum in such a case crucially depends on the specific details of the mechanism underlying the SUSY breaking scheme, and the accelerator signals are also affected by it. In particular, we demonstrate in the context of a braneworld-inspired model, used as illustration in the original work, that a new fermion {psi}{sub X}, arising from the SUSY breaking sector, is shown to control low-energy phenomenology in several cases. Also, SUSY signals are characterized by the associated production of the light neutral Higgs. In an alternative scenario where the gauginos are assumed to propagate in the bulk, we find that gluinos can be heavy and short-lived, and the SUSY breaking scale can be free of cosmological constraints.

• OSTI ID: 20705957
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
FERMIONS
HIGGS BOSONS
HIGGS MODEL
INTERMEDIATE BOSONS
REST MASS
SCALARS
SPARTICLES
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY BREAKING
TEV RANGE