R-parity violating supersymmetric contributions to the neutron beta decay

Details R-parity violating supersymmetric contributions to the neutron beta decay R-parity violating supersymmetric contributions to the neutron beta decay

2009-08-07

arxiv.org/abs/0908.1007v2

J.Phys.G 37:055104,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures, minor errors corrected, references added

Scientific paper

10.1088/0954-3899/37/5/055104

We investigate the contribution to the angular correlation coefficients of the neutron beta decay within the R-parity violating (RPV) minimal supersymmetric standard model (MSSM). The RPV effects contribute to the scalar interaction at the tree level. The effective scalar interaction of the neutron beta decay is constructed by making use of the relation between isospin asymmetries and the proton-neutron mass difference. On the basis of the recent update of the analyses of the superallowed Fermi transitions and the recent measurement of transverse polarization of the emitted electrons at PSI, we deduce new upper limits on the RPV couplings. We also point out the existence of new types of angular correlations which are sensitive to the RPV interactions.

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