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Title: Sgoldstino interpretation of HyperCP events

Abstract

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.

Authors:
;  [1]
  1. Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, Moscow 117312 (Russian Federation)
Publication Date:
OSTI Identifier:
20776681
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.73.035002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Gorbunov, D.S., and Rubakov, V.A. Sgoldstino interpretation of HyperCP events. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.035002.
Gorbunov, D.S., & Rubakov, V.A. Sgoldstino interpretation of HyperCP events. United States. doi:10.1103/PhysRevD.73.035002.
Gorbunov, D.S., and Rubakov, V.A. Wed . "Sgoldstino interpretation of HyperCP events". United States. doi:10.1103/PhysRevD.73.035002.
@article{osti_20776681,
title = {Sgoldstino interpretation of HyperCP events},
author = {Gorbunov, D.S. and Rubakov, V.A.},
abstractNote = {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.},
doi = {10.1103/PhysRevD.73.035002},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 73,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}