Lifetime difference of $B_s$ mesons - Theory status

Abstract

We give an update on the lifetime difference of $B_s$ mesons which accounts for recent lattice bag parameter results, and obtain $(\Delta \Gamma /\Gamma {)}_{B_s}=(9.3_{-4.6}^{+3.4})$. We then review the current theoretical uncertainties and conclude with a pessimistic perspective on further improvements.

7 pages, Talk presented at the UK Phenomenology Workshop on Heavy Flavour and CP Violation, 17 - 22 September 2000, St John's College, Durham. Reference corrected

References in corpus (4)

• A Few Aspects of Heavy Quark Expansion
• B-\bar{B} Mixing and b Hadron Lifetimes from Lattice QCD
• B Physics at the Z0 Resonance
• Lifetimes of b-flavoured hadrons

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