EnglishWe analyze the decay B-0 -> K+ pi(-) pi(0) with a sample of 4.54 x 10(8) B (B) over bar events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, and extract the complex amplitudes of seven interfering resonances over the Dalitz plot. These results are combined with amplitudes measured in B-0 -> K-S(0)pi(+)pi(-) decays to construct isospin amplitudes from B-0 -> K* pi and B-0 -> rho K decays. We measure the phase of the isospin amplitude Phi(3/2), useful in constraining the Cabibbo-Kobayashi-Maskawa unitarity triangle angle gamma and evaluate a CP rate asymmetry sum rule sensitive to the presence of new physics operators. We measure direct CP violation in B-0 -> K*(+) pi(-) decays at the level of 3 sigma when measurements from both B-0 -> K+ pi(-) pi(0) and B-0 -> K-S(0) pi(+) pi(-) decays are combined.
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http://hdl.handle.net/11568/203579| Autori interni: | CALDERINI, GIOVANNI ANGELINI, CARLO BATIGNANI, GIOVANNI BETTARINI, STEFANO FORTI, FRANCESCO GIORGI, MARCELLO OBERHOF, BENJAMIN JEROME ANDREAS PAOLONI, EUGENIO RIZZO, GIULIANA |
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| Titolo: | Amplitude analysis of B-0 -> K+ pi(-) pi(0) and evidence of direct CP violation in B -> K * pi decays |
| Anno del prodotto: | 2011 |
| Digital Object Identifier (DOI): | 10.1103/PhysRevD.83.112010 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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