Measuring the CP angle Beta in hadronic b ---> s penguin decays
Apr, 19978 pages
Published in:
- Phys.Lett.B 407 (1997) 61-65
e-Print:
- hep-ph/9704277 [hep-ph]
Report number:
- UDEM-GPP-TH-97-40
View in:
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Abstract:
Asymmetric e~+e~- colliders running on the \Upsilon(4S) (B factories) will much more readily measure CP-violating asymmetries in the decays of B_d~0 and B~\pm mesons than in the decays of B_s~0 mesons. As such, they will seemingly not be able to probe new phases in Bs-Bs(bar) mixing, i.e. in b\to s transitions. However, by measuring the CP angle \beta via b \to s hadronic penguin decays such as B_d~0 \to \eta'\ks and B_d~0 \to\phi\ks, and comparing its value to that obtained in B_d~0 \to\Psi\ks, it is possible to detect the presence of new physics in the b\to s flavour-changing neutral current. Recent CLEO results are encouraging in this regard. They suggest that the branching ratio of the b\to s penguin decay B_d~0 \to \eta'\ks is anomalously large, about 4 \times 10~{-5}, which will make it much easier to search for new physics in b\to s transitions.Note:
- 8 pages, LaTeX, 1 figure (included) Report-no: UdeM-GPP-TH-97-40
- electron positron: annihilation
- Upsilon(10570): electroproduction
- Upsilon(10570): decay
- B: electroproduction
- B-factory
- B: hadronic decay
- final state: two-particle
- eta(958)
- Phi(1020)
- Feynman graph: penguin
References(23)
Figures(0)