Improving the hadron physics of non-Standard-Model decays: example bounds on R-parity violation

2012/12/18 by J. Daub, J. T. Daub, Herbi K. Dreiner +6
Physics and Astronomy · #CP violation #Electron #Hadron #Lepton #Neutrino Physics Research #Nuclear physics #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #R-parity #Supersymmetry #hep-ex #hep-ph

paper · pdf · doi:10.1007/jhep01(2013)179

published as JHEP 1301:179,2013 · 18 pages, 3 figures

arxiv created 2012/12/18 · openalex publication_date 2013/01/01 · arxiv updated 2013/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Using the example of selected decays driven by R-parity-violating supersymmetric operators, we demonstrate how strong final-state interactions can be controlled quantitatively with high precision, thus allowing for a more accurate extraction of effective parameters from data. In our examples we focus on the lepton-flavor-violating decays tau --> mu pi+ pi-. In R-parity violation these can arise due to the product of two couplings. We find bounds that are an order of magnitude stronger than previous ones.

Citations

• Measurement of σ(e+e−→π+π−γ) and extraction of σ(e+e−→π+π−) below 1 GeV with the KLOE detector
• Precise Measurement of thee+e−→π+π−(γ)Cross Section with the Initial State Radiation Method atBABAR
• Review of Particle Physics
• Simulations of R-parity Violating SUSY Models
• Supersymmetric Froggatt-Nielsen models with baryon- and lepton-number violation
• Forces in Molecules
• High-statistics measurement of the pion form factor in the ρ-meson energy range with the CMD-2 detector
• τ−μflavor violation as a probe of the scale of new physics
• A new analysis of π K scattering from Roy and Steiner type equations
• Measurement of σ(e+e−→π+π−) from threshold to 0.85 GeV2 using initial state radiation with the KLOE detector
• Zweig rule violation in the scalar sector and values of low-energy constants
• Review of Particle Physics