Erratum: Polarized neutronβ-decay: Proton asymmetry and recoil-order currents [Phys. Rev. C72, 045501 (2005)]

Asymmetry of recoil protons in neutron β decay

The Z → bb decay asymmetry and flavor changing neutral currents

The measured value of Ab, the Zbb asymmetry parameter, disagrees with the Standard Model at 99% confidence level. If genuine the discrepancy could indicate new interactions unique to third generation quarks, implying enhanced Z penguin amplitudes. Enhanced rates are predicted for rare K and B decays, such as K → πνν, KL → π νν, B → Xsνν, and Bs → μμ. Measurements of ǫ /ǫ then imply QCD penguin ...

Recoil Order Chiral Corrections to Baryon Octet Axial Currents

We calculate chiral corrections to the octet axial currents through O(p3) using baryon chiral perturbation theory (BCPT). The relativistic BCPT framework allows one to sum an infinite series of recoil corrections at a given order in the chiral expansion. We also include SU(3)-breaking operators occuring at O(p2) not previously considered. We determine the corresponding low-energy constants (LEC...

Bilinear r-parity violation in neutrinoless double beta decay, Phys. Rev. D58

We discuss some phenomenological issues of the effective quarklepton operators emerging from the bilinear lepton-Higgs couplings in the superpotential and in the soft supersymmetry (SUSY) breaking sector of the supersymmetric models without R-parity. The contribution of these operators to the neutrinoless double beta decay (0νββ) is derived. The corresponding nuclear matrix elements are calcula...

The Beta-, Neutrino- and Proton-Asymmetry in Neutron β-Decay

This article describes measurements of angular-correlation coefficients in the decay of free neutrons with the superconducting spectrometer PERKEO II. A method for measuring the β-asymmetry coefficient A is presented, as well as a new method for determining the neutrino-asymmetry coefficient B, which allows a value for the proton-asymmetry coefficient C to be obtained for the first time. An ong...