Y. Sakai

collaborators

3 papers

hep-ex2025

Measurements of the mass difference $m (B^{0}) - m (B^{+})$ and the energy dependence of the cross-section ratio $I ¨ (e^{+} e^{-} \to B^{0} B ˉ^{0}) / I ¨ (e^{+} e^{-} \to B^{+} B^{-})$ at Belle and Belle II

Belle, Belle II Collaborations, : +396

Using data samples collected by the Belle and Belle II experiments at the $I^¥ (4 S)$ resonance with integrated luminosities of 571 fb $^{- 1}$ and 365 fb $^{- 1}$ , respectively, we measu…

hep-ex2025

Measurement of the branching fraction, polarization, and time-dependent $C P$ asymmetry in $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ decays and constraint on the CKM angle $I ¨ _{2}$

Belle II Collaboration, I. Adachi, L. Aggarwal +377

We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ decays, which have two $I ¨ ^{0}$ 's in the final state. We also meas…

hep-ex2025

Search for $C P$ violation in $D_{(s)}^{+} \to K_{S}^{0} K^{-} I ¨ ^{+} I ¨ ^{+}$ decays using triple and quadruple products

Belle, Belle II Collaborations, : +366

We perform the first search for $C P$ violation in $D_{(s)}^{+} \to K_{S}^{0} K^{-} I ¨ ^{+} I ¨ ^{+}$ decays. We use a combined data set from the Belle and Belle II experiments, which…

Measurements of the mass difference m(B0)−m(B+) and the energy dependence of the cross-section ratio I¨(e+e−→B0Bˉ0)/I¨(e+e−→B+B−) at Belle and Belle II

Measurement of the branching fraction, polarization, and time-dependent CP asymmetry in B0→I¨+I¨− decays and constraint on the CKM angle I¨2​

Search for CP violation in D(s)+​→KS0​K−I¨+I¨+ decays using triple and quadruple products

Measurements of the mass difference $m (B^{0}) - m (B^{+})$ and the energy dependence of the cross-section ratio $I ¨ (e^{+} e^{-} \to B^{0} B ˉ^{0}) / I ¨ (e^{+} e^{-} \to B^{+} B^{-})$ at Belle and Belle II

Measurement of the branching fraction, polarization, and time-dependent $C P$ asymmetry in $B^{0} \to I ¨ ^{+} I ¨ ^{-}$ decays and constraint on the CKM angle $I ¨ _{2}$

Search for $C P$ violation in $D_{(s)}^{+} \to K_{S}^{0} K^{-} I ¨ ^{+} I ¨ ^{+}$ decays using triple and quadruple products