Speaker
Jelena Ilic
(University of Warwick)
Description
We perform a time-dependent Dalitz plot analysis of B0->Kspi+pi- in order to extract the CP violation parameters of f0(980)Ks and rho0(770)Ks and direct CP-asymmetries of K*+(892)pi-. The results are obtained from a data sample of (383 +/- 3) 10e6 BBbar decays, collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The measured values of 2beta_eff in B0 decays to f0(980)Ks and rho0(770)Ks are (89 +22/-20 +/- 5 +/- 8) degrees and (37 +19/-17 +/- 5 +/- 6) degrees, respectively, where the first quoted uncertainty is statistical, the second is systematic and the third is Dalitz plot signal model uncertainty. We measure the significance of 2beta_eff(f0(980)Ks) != 0 to be 4.3 sigma.
In decays to K*(892)pi we find ACP = -0.18 +/- 0.10 +/- 0.03 +/- 0.03. The measured phase difference between the decay amplitudes of B0 -> K*+(892)pi- and B0 -> K*-(892)pi+ is (-164 +/-24 +/-12 +/- 15) degrees.
| Talk, Poster, or Talk & Poster | Talk |
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Primary authors
Alejandro Perez
(Universite Paris VI et VII)
Eli Ben-Haim
(Universite Paris VI et VII)
Gagan Bihari Mohanty
(University of Warwick)
Jelena Ilic
(University of Warwick)
Jose Ocariz
(Universite Paris VI et VII)
Mathew Graham
(Stanford Linear Accelerator Center)
Maurizio Pierini
(University of Wisconsin)
Nitesh Soni
(University of Birmingham)
Pablo Del Amo Sanchez
(Universite Paris VI et VII)
Thomas Latham
(University of Warwick)
Timothy Gershon
(University of Warwick)
