Non-standard semileptonic hyperon decays

Abstract

We investigate the discovery potential of semileptonic hyperon decays in terms of searches of new physics at teraelectronvolt scales. These decays are controlled by a small $SU(3)$-flavor breaking parameter that allows for systematic expansions and accurate predictions in terms of a reduced dependence on hadronic form factors. We find that muonic modes are very sensitive to non-standard scalar and tensor contributions and demonstrate that these could provide a powerful synergy with direct searches of new physics at the LHC.

v2. Comparison with direct searches of new physics at the LHC presented

References in corpus (15)

• Parton distributions for the LHC
• Big-Bang Nucleosynthesis
• Tests of the standard electroweak model in beta decay
• Renormalization group evolution of dimension-six baryon number violating operators
• Leading SU(3)-breaking corrections to the baryon magnetic moments in Chiral Perturbation Theory
• Nucleon isovector couplings from $N_f=2$ lattice QCD
• Constraints on two-lepton, two quark operators
• Search for leptonic decays of W' bosons in pp collisions at sqrt(s) = 7 TeV
• Octet-baryon axial-vector charges and SU(3)-breaking effects in the semileptonic hyperon decays
• Minimal Flavour Violation for Leptoquarks
• Lattice study of flavor SU(3) breaking in hyperon beta decay
• Tests of non-standard electroweak couplings of right-handed quarks
• First Lattice QCD Study of the Sigma -> n Axial and Vector Form Factors with SU(3) Breaking Corrections
• Measurement of the branching ratios of the decays Xi0 --> Sigma+ e- nubar and anti-Xi0 --> anti-Sigma+ e+ nu
• Hyperon vector form factor from 2+1 flavor lattice QCD

Cited by in corpus (3)

• Effective-field theory analysis of the ${\tau }^{-}\to (K\pi {)}^{-}{\nu }_{\tau }$ decays
• Effective-field theory analysis of the ${\tau }^{-}\to {\eta }^{(\prime )}{\pi }^{-}{\nu }_{\tau }$ decays
• Semileptonic $\tau$ decays: powerful probes of non-standard charged current weak interactions