CP Violation in Hyperon Decays from Supersymmetry

Abstract

It was pointed out recently that supersymmetry can generate flavor-changing gluonic dipole operators with sufficiently large coefficients to dominate the observed value of epsilon'/epsilon. We point out that the same operators contribute to direct CP violation in hyperon decay and can generate a CP violating asymmetry A(Λ^0_-) in the range probed by the current E871 experiment. Interestingly, models that naturally reproduce the relation lambda = sqrt{m_d/m_s} do not generate epsilon'/epsilon but could lead to an A(Λ^0_-) of O(10^{-3}).

4 pages

References in corpus (5)

• Observation of Direct CP Violation in K_{S,L} to ππDecays
• A new measurement of direct CP violation in two pion decays of the neutral kaon
• Supersymmetric CP violation ${\epsilon }^{\prime }/\epsilon$ due to asymmetric A-matrix
• Large Delta(I)=3/2 Contribution to epsilon'/epsilon in Supersymmetry
• Probing Supersymmetric Flavor Models with ${\epsilon }^{\prime }/\epsilon$

Cited by in corpus (26)

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• Direct CP violation in K->3pi decays induced by SUSY chromomagnetic penguins
• New Physics and CP Violation in Hyperon Nonleptonic Decays
• Search for Direct CP Violation in Non-Leptonic Decays of Charged $\Xi$ and $\Lambda$ Hyperons
• HyperCP: A high-rate spectrometer for the study of charged hyperon and kaon decays
• First Lattice Calculation of the Electromagnetic Operator Amplitude <pi0|Q+|K0>
• Measurement of Decay Parameters for ${\Xi }^{-}\to \Lambda {\pi }^{-}$ Decay
• CP Violation in Hyperon Decays from SUSY with Hermitian Yukawa and A Matrices
• Search for $CP$ violation and measurement of branching fractions and decay asymmetry parameters for ${\Lambda }_c^{+}\to \Lambda h^{+}$ and ${\Lambda }_c^{+}\to {\Sigma }^0{h}^{+}$ ($h=K,\pi$)
• $K\to \pi$ matrix elements of the chromomagnetic operator on the lattice
• Probing CP Violation in Omega->Lambda K->p pi K Decay
• Production and decay of polarized hyperon-antihyperon pairs
• Electromagnetic penguin operators and direct CP violation in K --> pi l^+ l^-
• Reanalysis of CP Violation in K_L -> pi^+ pi^- gamma
• Probing New Physics in Charm Couplings with FCNC
• $\pi \Xi$ phase shifts and CP Violation in $\Omega \to \pi \Xi$ Decay
• Stringent test of $CP$ symmetry in ${\Sigma }^{+}$ hyperon decays
• Charge asymmetry in K+- --> π+-γγinduced by the electromagnetic penguin operators
• Phenomenological study of $J/\psi \to {\Xi }^0(\Lambda {\pi }^0){\bar{\Xi }}^0(\bar{\Lambda }\gamma )$ decays
• Matrix Elements of Light Quarks
• A New Experiment to Study Hyperon CP Violation and the Charmonium System
• Prospects for Antiproton Experiments at Fermilab
• CP-violating asymmetry in $\Lambda \to p\pi$ in the Skyrme model
• New Window on Matter-Antimatter Differences