Sgoldstino interpretation of HyperCP events

Journal Article · Wed Feb 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.035002· OSTI ID:20776681

Gorbunov, D S; Rubakov, V A ^[1]

---

1. Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, Moscow 117312 (Russian Federation)

We discuss possible sgoldstino interpretation of the observation, reported by HyperCP collaboration, of three {sigma}{sup +}{yields}p{mu}{sup +}{mu}{sup -} decay events with dimuon invariant mass 214.3 MeV within detector resolution. We find that this interpretation is consistent in models with (i) parity conservation in sgoldstino interactions, (ii) pseudoscalar sgoldstino P of mass 214 MeV and heavier scalar sgoldstino, and (iii) low supersymmetry breaking scale, {radical}(F)=2.5-60 TeV. In these models, sgoldstino can be observed in decays K{sup +}{yields}{pi}{sup +}{pi}{sup 0}P, K{sub L}{yields}{pi}{pi}P and K{sub S}{yields}{pi}{pi}P at the branching ratios of at least of order 10{sup -12}, 10{sup -8} and 10{sup -11}, respectively. The model can be probed also at e{sup +}e{sup -} colliders in the channels e{sup +}e{sup -}{yields}{gamma}P and e{sup +}e{sup -}{yields}e{sup +}e{sup -}P, where the cross section is likely to be in the range 1 pb-5 ab.

• OSTI ID: 20776681
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 3; Other Information: DOI: 10.1103/PhysRevD.73.035002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
KAONS NEUTRAL LONG-LIVED
KAONS NEUTRAL SHORT-LIVED
KAONS PLUS
MEV RANGE
MUONS MINUS
MUONS PLUS
PARITY
PARTICLE DECAY
POSITRONS
REST MASS
SCALARS
SIGMA PLUS PARTICLES
SYMMETRY BREAKING
TEV RANGE