Measurement of Branching Fractions of Color-Suppressed Decays of the B0bar Meson to D(*)0 pi0, D(*)0 eta, D(*)0 omega, and D0 eta_prime

Abstract

Using a sample of 88.8 10**6 BBbar events collected with the BaBar detector at the PEP-II storage rings at the Stanford Linear Accelerator Center, we measure the branching fractions of seven color-suppressed B-meson decays: BF(B0bar to D0 pi0)=(2.9 +/- 0.2(stat.)+/- 0.3(syst.))*10**-4, BF(B0bar to D*0 pi0)=(2.9 +/- 0.4(stat.)+/- 0.5(syst.))*10**-4, BF(B0bar to D0 eta)=(2.5 +/- 0.2(stat.)+/- 0.3(syst.))*10**-4, BF(B0bar to D*0 eta)=(2.6 +/- 0.4(stat.)+/- 0.4(syst.))*10**-4, BF(B0bar to D0 omega)=(3.0 +/- 0.3(stat.)+/- 0.4(syst.))*10**-4, BF(B0bar to D*0 omega)=(4.2 +/- 0.7(stat.)+/- 0.9(syst.))*10**-4, and BF(B0bar to D0 eta_prime)=(1.7 +/- 0.4(stat.)+/- 0.2(syst.))*10**-4. We set the 90 % confidence-level upper limit: BF(B0bar to D*0 eta_prime) < 2.6*10**-4. The channels B0bar to D*0 eta, D*0 omega, and D0 eta_prime are seen with more than five-sigma statistical significance. All of these branching fractions are significantly larger than theoretical expectations based on the ``naive'' factorization model.

25 pages, 28 postscript (eps) figures, submitted to Phys. Rev. D

References in corpus (5)

• Strong Phases and Factorization for Color Suppressed Decays
• Final-State Phases in $B\to D\pi ,D^{\ast }\pi$, and $D\rho$ Decays
• Study of $\overline{B^0}\to D^{(\ast )0}{\pi }^{+}{\pi }^{-}$ Decays
• Measurement of B(B- to D0 pi-) and B(barB0 to D+ pi-) and Isospin Analysis of B to D pi Decays
• Testing factorization in B -> D(*)X decays

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• Measurement of CP Observables for the Decays B+/- --> D0_CP K*+/-
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