Title: R- and N-correlation coefficients in neutron decay: Search for scalar and tensor couplings in weak interactions
Authors: Bodek, K
Ban, G
Bialek, A
Gorel, P
Kirch, K
Kistryn, St
Kozela, A
Kuzniak, M
Naviliat-Cuncic, O
Severijns, Nathal
Stephan, E
Zejma, J
Issue Date: 2011
Publisher: Elsevier BV
Host Document: Physics Procedia vol:17 pages:30-39
Conference: 2nd International Workshop on the Physics of Fundamental Symmetries and Interactions (PSI) location:Switzerland: SWITZERLAND date:OCT 11-15, 2010
Abstract: The decay correlation coefficients R and N have been measured with the aim to search for scalar and tensor
admixtures to the V-A interaction dominating in the neutron decay. Both R and N are accessible in the two transverse
components of the electron polarization which was analyzed with Mott scattering from lead nuclei. The analysis
of data collected in four runs is in its final stage giving the preliminary results consistent with the Standard Model:
R = 0.005 ± 0.013(stat.) ± 0.005(syst.) and N = 0.064 ± 0.012(stat.) ± 0.004(syst.), respectively. A possible future
experiment leading to an accuracy improved by at least an order of magnitude and more systematic investigation of
the electron spin related correlation coefficients is discussed as well.
ISBN: *****************
ISSN: 1875-3892
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Nuclear and Radiation Physics Section

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