Radiative corrections to neutralino and chargino masses in the minimal supersymmetric model

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.565· OSTI ID:7042293

Pierce, D ^[1]; Papadopoulos, A ^[2]

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1. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218 (United States)
2. Physics Department, Purdue University, West Lafayette, Indiana 47907 (United States)

We determine the neutralino and chargino masses in the MSSM at one loop. We perform a Feynman diagram calculation in the on-shell renormalization scheme, including quark-squark and lepton-slepton loops. We find generically the corrections are of the order of 5%. For a 20 GeV neutralino the corrections can be as large as 20%. The corrections change the region of [mu], [ital M][sub 2], tan[beta] parameter space which is ruled out by CERN LEP data. We demonstrate that, e.g., for a given [mu] and tan[beta] the lower limit on the parameter [ital M][sub 2] can shift by 20 GeV.

• OSTI ID: 7042293
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:1; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662210* -- Specific Theories & Interaction Models
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRECTIONS
DIAGRAMS
ELEMENTARY PARTICLES
FERMIONS
FEYNMAN DIAGRAM
LEPTONS
MASS
MASSLESS PARTICLES
NEUTRINOS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARKS
RADIATIVE CORRECTIONS
RENORMALIZATION
SPARTICLES
SUPERSYMMETRY
SYMMETRY