Measurements of sin2alpha/phi2 from B -> pipi, rhopi and rhorho modes

Details Measurements of sin2alpha/phi2 from B -> pipi, rhopi and rhorho modes Measurements of sin2alpha/phi2 from B -> pipi, rhopi and rhorho modes

2004-11-30

arxiv.org/abs/hep-ex/0411090v1

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 3 figures: Proceedings of a talk given at Flavor Physics and CP Violation, 4th-9th October 2004, Daegu, Korea

Scientific paper

B meson decays involving b -> u transitions are sensitive to the unitarity triangle angle alpha (or phi2). The BaBar and Belle experiments have studied B-meson decays to pipi, rhopi and rhorho final states. It is possible to combine these measurements to constrain alpha with a precision of O(10 degrees) and a central value of approximately 100 degrees. These results are consistent with Standard Model expectations.

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