sin 2φ2( = α) from Belle
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RESULTS ON sin 2 φ 2 ( α ) FROM THE B FACTORIES
The status of CP violation in B → ππ and the determination of sin 2φ2(α) from the B factories is described.
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Results by the BaBar and Belle experiments of the measurements sin 2α, sin 2β and sin(2β + γ) along with the CKM matrix elements Vcb and Vub are presented. The BaBar and Belle experiments b → scc̄ results for sin 2β are in good agreement with each other, comfortably establishing CP violation within B decays. However, there is a 3.5 standard deviation between this result and sin 2β measured by th...
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Recent results on B mixing and CP violation from the B-factory experiments, BABAR at PEP-II and Belle at KEK-B, are summarized. A discussion of CP violation is then presented which concentrates on the CP parameter sin2β (also known as sin2φ1). The most recent measurements of this parameter from B-factory data yield sin2β = 0.741± 0.067 (stat)± 0.033 (syst) (BaBar) sin2φ1 = 0.719± 0.072 (stat)± ...
متن کاملar X iv : h ep - e x / 01 12 02 6 v 1 1 9 D ec 2 00 1 Results on CP Violation from Belle
I describe the recent measurement of the CP violating parameter sin 2φ 1 = (0.99 ± 0.14 ± 0.05) from the Belle experiment at KEK.
متن کاملar X iv : h ep - e x / 02 07 07 5 v 1 2 5 Ju l 2 00 2 sin 2 φ 1 with 45 Million BB Pairs at Belle ∗
We present an improved measurement of the standard model CP violation parameter sin 2φ1 (also known as sin 2β) based on a sample of 45 × 10 6 BB pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. One neutral B meson is reconstructed in a J/ψK0 S , ψ(2S)K 0 S , χc1K 0 S , ηcK 0 S , J/ψK ∗0, or J/ψK0 L CP -eigenstate decay channel and the f...
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