Lifetime difference of Bs mesons - theory status

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Published under licence by IOP Publishing Ltd
, , Citation Martin Beneke and Alexander Lenz 2001 J. Phys. G: Nucl. Part. Phys. 27 1219 DOI 10.1088/0954-3899/27/6/319

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1 Institut für Theoretische Physik E, RWTH Aachen, Sommerfeldstr. 28, D-52074 Aachen, Germany

2 Fakultät für Physik, Universität Regensburg, D-93040 Regensburg, Germany

Dates

  1. Received 19 February 2001

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0954-3899/27/6/1219

Abstract

We give an update on the lifetime difference of Bs mesons which accounts for recent lattice bag parameter results, and obtain (ΔΓ/Γ)Bs = (9.3+3.4-4.6)%. We then review the current theoretical uncertainties and conclude with a pessimistic perspective on further improvements.

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10.1088/0954-3899/27/6/319