With a sample of about 227x10(6) B (B) over bar pairs recorded with the BABAR detector we perform a full angular analysis of the decay B-0-->phiK(*0)(892). We make novel measurements of five parameters sensitive to CP violation. We also measure the branching fraction to be (9.2+/-0.9+/-0.5)x10(-6) and determine the fractions of longitudinal and parity-odd transverse contributions as f(L)=0.52+/-0.05+/-0.02 and f(perpendicular to)=0.22+/-0.05+/-0.02. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be phi(parallel to)=2.34(-0.20)(+0.23)+/-0.05 rad and phi(perpendicular to)=2.47+/-0.25+/-0.05 rad. We also observe the decay B-0-->phiK(*0)(1430).
Measurement of the B-0 -> phi K-*0 decay amplitudes
ANDREOTTI, Mirco;AZZOLINI, Virginia;CALABRESE, Roberto;CIBINETTO, Gianluigi;LUPPI, Eleonora;NEGRINI, Matteo;SARTI, Alessio;
2004
Abstract
With a sample of about 227x10(6) B (B) over bar pairs recorded with the BABAR detector we perform a full angular analysis of the decay B-0-->phiK(*0)(892). We make novel measurements of five parameters sensitive to CP violation. We also measure the branching fraction to be (9.2+/-0.9+/-0.5)x10(-6) and determine the fractions of longitudinal and parity-odd transverse contributions as f(L)=0.52+/-0.05+/-0.02 and f(perpendicular to)=0.22+/-0.05+/-0.02. The phases of the parity-even and parity-odd transverse amplitudes relative to the longitudinal amplitude are found to be phi(parallel to)=2.34(-0.20)(+0.23)+/-0.05 rad and phi(perpendicular to)=2.47+/-0.25+/-0.05 rad. We also observe the decay B-0-->phiK(*0)(1430).File | Dimensione | Formato | |
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PhysRevLett.93.231804.pdf
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