Looking for new physics in B{sub d}{sup 0}-B{sub d}{sup 0} mixing
- Laboratoire de Rene J.-A. Levesque, Universite de Montreal C.P. 6128, succ. centre-ville, Montreal, QC (Canada)
There are variety of methods which directly test for the presence of new physics in the b{yields}s flavor-changing neutral current (FCNC), but none which cleanly probe new physics in the b{yields}d FCNC. One possible idea is to compare the weak phase of the t-quark contribution to the b{yields}d penguin, which is -{beta} in the SM, with that of B{sub d}{sup 0}-B{sub d}{sup 0} mixing (-2{beta} in the SM). In this talk I show that, in fact, it is impossible to measure the weak phase of the t-quark penguin, or indeed any penguin contribution, without theoretical input. However, if one makes a single assumption involving the hadronic parameters, it is possible to obtain the weak phase. I discuss how one can apply such an assumption to the time-dependent decays B{sub d}{sup 0}(t){yields}K{sup 0}K{sup 0} and B{sub s}{sup 0}(t){yields}{phi}K{sub s} in order to detect new physics in the b{yields}d FCNC.
- OSTI ID:
- 21210536
- Journal Information:
- AIP Conference Proceedings, Vol. 488, Issue 1; Conference: MRST (Montreal-Rochester-Syracuse-Ontario)'99 conference: High energy physics at the millennium - 'The sundarfest', Ottawa, ON (United States), 10-12 May 1999; Other Information: DOI: 10.1063/1.1301299; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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