MEASUREMENT OF sin 2φ1 IN b → c And b → s DECAYS AT Belle

Details MEASUREMENT OF sin 2φ1 IN b → c And b → s DECAYS AT Belle MEASUREMENT OF sin 2φ1 IN b → c And b → s DECAYS AT Belle

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006fuin.conf..215h&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the 21st Lake Louise Winter Institute. Held 17-23 February 2006 in Lake Louise, Alberta

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Scientific paper

Measurements of time-dependent CP asymmetries in B0 → J/ψK0, φK0, K+K- KS, η' KS, f0 (980) KS and ωKS decays based on 386 × 106 Bbar {B} pairs collected by the Belle detector are presented. With this data sample, the J/ψK0 mode provides a precision measurement of sin2 φ1. The other modes, which proceed via b → s penguin (loop) diagrams are sensitive to new physics phases which may appear within the loop. Differing sin2 φ1 measurements between J/ψK0 and the b → s penguin modes could be a signature of such phases.

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