Is there a non-Standard-Model contribution in non-leptonic b -> s decays?

Abstract

Precision measurements of branching fractions and CP asymmetries in non-leptonic b -> s decays reveal certain "puzzles" when compared with Standard Model expectations based on a global fit of the CKM triangle and general theoretical expectations. Without reference to a particular model, we investigate to what extent the (small) discrepancies observed in (B -> J/psi K), (B -> phi K) and (B -> K pi) may constrain new physics in (b -> s q qbar) operators. In particular, we compare on a quantitative level the relative impact of different quark flavours q=c,s,u,d.

25 pages, 7 figures, some references added, brief discussion of B -> J/psi πincluded

Cited by in corpus (4)

• Precision Physics with B^0_s -> J/psi phi at the LHC: The Quest for New Physics
• Benchmarks for the New-Physics Search through CP Violation in B^0->pi^0 K_S
• Searching For New Physics With B to K pi Decays
• A simultaneous explanation of the large phase in B_s-\bar B_s mixing and B --> ππ/ πK puzzles in R-parity violating supersymmetry