First observation of B0→D*0π+π+π-π- decays
Physical Review D American Physical Society (APS) 65:1 (2002) 012002
First observation of B̄0→ D*0π+π+π-π -decays
Physical Review D 65:1 (2002)
Abstract:
We report on the observation of B̄0→D* 0π+π+π- π-decays. The branching ratio is (0.30±0.07 ±0.06)%. Interest in this particular mode was sparked by Ligeti, Luke and Wise who propose it as a way to check the validity of factorization tests in B̄0→D*+π+π -π-π0 decays. © 2001 The American Physical Society.Measurement of Β(B- → D0π-) and Β(B- → D+π-) and isospin analysis of B̄ → Dπ decays
Physical Review D 66:3 (2002)
Abstract:
We present new measurements of branching fractions for the color-favored decays B+ → D0π- and B̄0 → D+π-. Using 9.67×106 BB̄ pairs collected with the CLEO detector, we obtain the branching fractions Β(B- → D0π - = (49.7±1.2±2.9±2.2)×104 and Β(B̄0 → D+π-) = (26.8±1.2±2.4±1.2)×10-4. The first error is statistical, the second is systematic, and the third is due to the experimental uncertainty on the production ratio of charged and neutral B mesons in Y(4S) decays. These results, together with the current world average for the color-suppressed branching fraction Β(B̄+ → D 0π0), are used to determine the cosine of the strong phase difference δI between the I = 1/2 and I=3/2 isospin amplitudes. We find cos δI = 0.863 -0.023-0.035-0.030+0.024+0.036+0.038, and obtain a 90% confidence interval of 16.5° < δI < 38.1°. This nonzero value of δI suggests the presence of final state interactions in the D π system. © 2002 The American Physical Society.Search for charmless B --> VV decays.
Physical review letters 88:2 (2002) 021802
Abstract:
We have studied two-body charmless decays of the B meson into the final states rho(0)rho(0), K(*0)rho(0), K(*0)K(*0), K(*0)K(*0), K(*+)rho(0), K(*+)K(*0), and K(*+)K(*-) using only decay modes with charged daughter particles. Using 9.7x10(6) BB pairs collected with the CLEO detector, we place 90% confidence level upper limits on the branching fractions (1.4-14.1)x10(-5), depending on final state and polarization.Search for the Familon via B± → π±X0, B± → K±X0, and B0 → KS0X0 Decays
Physical Review Letters American Physical Society (APS) 87:27 (2001) 271801