Andrew Bakich

Study of D** production and light hadronic states in the B¯0→D*+ωπ− decay

We report on the first observations of (B) over bar (0) -> D-1 (2430)(0)omega, (B) over bar (0) -> D-1 (2420)(0)omega, and (B) over bar (0) -> D-2* (2460)(0)omega decays. The (B) over bar (0) -> D*(+) rho(1450)(-) decay is also observed. The branching fraction measurements are based on (771.6 +/- 10.6) x 10(6) B (B) over bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The fractions of longitudinal polarization of the D** states as well as partial wave fractions of the D-1 (2430)(0) are obtained. We also set a 90% confidence level upper limit for the product of branching fractions of B((B) over bar (0) -> D*(+)b(1) (1235)(-)) x B(b(1) (1235)(-) -> omega pi(-)). The measurements show evidence of nontrivial final-state interaction phases for the rho-meson-like amplitudes.

Search for CP Violation in {tau}{sup {+-}}{yields}K{sub S}{sup 0}{pi}{sup {+-}}{nu}{sub {tau}} Decays at Belle

We report on a search for CP violation in {tau}{sup {+-}}{yields}K{sub S}{sup 0}{pi}{sup {+-}}{nu}{sub {tau}} decays using a data sample of 699 fb{sup -1} collected by the Belle experiment at the KEKB electron-positron asymmetric-energy collider. The CP asymmetry is measured in four bins of the invariant mass of the K{sub S}{sup 0}{pi}{sup {+-}} system and found to be compatible with zero with a precision of O(10{sup -3}) in each mass bin. Limits for the CP violation parameter Im({eta}{sub S}) are given at the 90% confidence level. These limits are |Im({eta}{sub S})|<0.026 or better, depending on the parametrization used to describe the hadronic form factors, and improve upon previous limits by 1 order of magnitude.

Measurement of the decay B(0) -> pi(-) l(+) nu and determination of vertical bar V(ub)vertical bar

We present a measurement of the charmless semileptonic decay

Study of the K{sup +}{pi}{sup +}{pi}{sup -} final state in B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -}

B^0topi^-ell^+nu

Search for a Low Mass Particle Decaying into {mu}{sup +}{mu}{sup -} in B{sup 0}{yields}K{sup *0}X and B{sup 0}{yields}{rho}{sup 0}X at Belle

using a data sample containing 657

Search for CP Violation in the Decays D{sub (s)}{sup +{yields}}K{sub S}{sup 0{pi}+} and D{sub (s)}{sup +{yields}}K{sub S}{sup 0}K{sup +}

times 10^6

Search for B{sup 0{yields}}K*{sup 0}K*{sup 0}, B{sup 0{yields}}K*{sup 0}K*{sup 0} and B{sup 0{yields}}K{sup +{pi}-}K{sup {+-}{pi}{+-}}decays

Bbar{B}

Evidence for direct CP violation in the decay B{sup {+-}{yields}D(*)}K{sup {+-}}, D{yields}K{sub S}{sup 0{pi}+{pi}-} and measurement of the CKM phase {phi}{sub 3}

events collected with the Belle detector at the KEKB asymmetric-energy

Observation of the Doubly Cabibbo-Suppressed Decay D{sub s}{sup +}{yields}K{sup +}K{sup +}{pi}{sup -}

e^+e^-