====== TTP03-15 Towards a Generic Parametrisation of ``New Physics'' in Quark-Flavour Mixing ======
 
 
   <hidden TTP03-15  Towards a Generic Parametrisation of ``New Physics'' in Quark-Flavour Mixing > We consider a special class of dimension-six operators which are
 assumed to be induced by some new physics with typical scales of
 order \Lambda. This special class are the operators with two quarks
 which can mediate transitions between quark flavours. We show that under
 quite general assumptions the effect of these operators can be parametrised
 in terms of six parameters, leading to a modification of the (at tree level
 flavour diagonal) neutral currents and to an ffective CKM matrix''
 for the charged currents, which is
 not necessarily unitary any more. The effects of these operators
 on charged and neutral currents are studied. 
 </hidden>
|**Th. Hansmann, Th. Mannel**  | 
|**  Acta Phys.Polon.B  34 4477-4490 2003  **  |
| {{preprints:2003:ttp03-15.pdf|PDF}} {{preprints:2003:ttp03-15.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0306043|arXiv]]   |
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