Polarisation in sfermion decays: determining $\tan\beta$ and trilinear couplings |
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Authors: | E Boos H-U Martyn G Moortgat-Pick M Sachwitz A Sherstnev P M Zerwas |
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Institution: | (1) Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119992 Moscow, Russia;(2) DESY, Deutsches Elektronen-Synchrotron, 22603 Hamburg, Germany;(3) Rheinisch-Westfälische Technische Hochschule, 52074 Aachen, Germany;(4) IPPP, University of Durham, DH1 3LE Durham, UK;(5) DESY, Deutsches Elektronen-Synchrotron, 15738 Zeuthen, Germany |
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Abstract: | The basic parameters of supersymmetric theories can be determined at future e
+
e
- linear colliders with high precision. We investigate in this report how polarisation measurements in
and
or
decays to
leptons and t quarks plus neutralinos or charginos can be used to measure
(in particular for large values) and to determine the trilinear couplings
, A
t
and A
b
in sfermion pair production.Received: 17 April 2003, Revised: 3 July 2003, Published online: 29 August 2003 |
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Keywords: | |
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