Using a sample of 771.6×106 ΥΥ(4S) decays collected by the Belle experiment at the KEKB e+e− collider, we observe, for the first time, the transition Υ(4S)→ηhb(1P) with the branching fraction B[Υ(4S)→ηhb(1P)]=(2.18±0.11±0.18)×10−3 and we measure the hb(1P) mass Mhb(1P)=(9899.3±0.4±1.0) MeV/c2, corresponding to the hyperfine (HF) splitting ΔMHF(1P)=(0.6±0.4±1.0) MeV/c2. Using the transition hb(1P)→γηb(1S), we measure the ηb(1S) mass Mηb(1S)=(9400.7±1.7±1.6) MeV/c2, corresponding to ΔMHF(1S)=(59.6±1.7±1.6) MeV/c2, the ηb(1S) width Γηb(1S)=(8+6−5±5) MeV/c2 and the branching fraction B[hb(1P)→γηb(1S)]=(56±8±4)%
We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with th...
Using the data sample of 711 fb-1 of Ï'(4S) on-resonance data taken by the Belle detector at the KEK...
We present the first measurements of absolute branching fractions of Ξc 0 decays into Ξ-π+, ΛK-π+, a...
Using a sample of 771.6×106 ΥΥ(4S) decays collected by the Belle experiment at the KEKB e+e− collide...
Using a sample of 771.6×106 ΓΓ(4S) decays collected by the Belle experiment at the...
Using a sample of 771.6×10(6) ϒϒ(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) c...
Using a sample of $771.6 \times 10^{6}$ $\Upsilon(4S)$ decays collected by the Belle experiment at t...
We report the first observation of the hadronic transition $ϒ(4S) → η′ϒ(1S)$, using 496 fb$^{-1}$ da...
Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at...
Using the data sample of 711 fb−1 of Υ(4S) on-resonance data taken by the Belle detector at the KEK...
Using the data sample of 711 fb−1 of Υ(4S) on-resonance data taken by the Belle detector at the KEKB...
Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at...
We report the observation of Υ(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectr...
We present the first evidence of the decay B-→τ-ν̄τ, using 414fb-1 of data collected at the Υ(4S) re...
We present measurements of B+→D̄ *0τ+ντ and B+→D̄0τ+ντ decays in a data sample of 657×106 BB̄ pairs ...
We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with th...
Using the data sample of 711 fb-1 of Ï'(4S) on-resonance data taken by the Belle detector at the KEK...
We present the first measurements of absolute branching fractions of Ξc 0 decays into Ξ-π+, ΛK-π+, a...
Using a sample of 771.6×106 ΥΥ(4S) decays collected by the Belle experiment at the KEKB e+e− collide...
Using a sample of 771.6×106 ΓΓ(4S) decays collected by the Belle experiment at the...
Using a sample of 771.6×10(6) ϒϒ(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) c...
Using a sample of $771.6 \times 10^{6}$ $\Upsilon(4S)$ decays collected by the Belle experiment at t...
We report the first observation of the hadronic transition $ϒ(4S) → η′ϒ(1S)$, using 496 fb$^{-1}$ da...
Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at...
Using the data sample of 711 fb−1 of Υ(4S) on-resonance data taken by the Belle detector at the KEK...
Using the data sample of 711 fb−1 of Υ(4S) on-resonance data taken by the Belle detector at the KEKB...
Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at...
We report the observation of Υ(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectr...
We present the first evidence of the decay B-→τ-ν̄τ, using 414fb-1 of data collected at the Υ(4S) re...
We present measurements of B+→D̄ *0τ+ντ and B+→D̄0τ+ντ decays in a data sample of 657×106 BB̄ pairs ...
We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with th...
Using the data sample of 711 fb-1 of Ï'(4S) on-resonance data taken by the Belle detector at the KEK...
We present the first measurements of absolute branching fractions of Ξc 0 decays into Ξ-π+, ΛK-π+, a...