Y. Hasegawa

activity

20052019

most citedObservation of a new charmonium state in double charmonium production in e+ e- annihilation at \sqrt{s} ~ 10.6 GeV

241 citations · 371 across the 5 of their papers we have counts for

collaborators

6 papers

hep-ex2019

Experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$

The Belle Collaboration, A. Abdesselam, I. Adachi +454

We report an experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$ using 980 fb $^{- 1}$ data in the $e^{+} e^{-}$ annihilation around $s = 10.6$ GeV collected by…

hep-ex2019★ 68 cited

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, A. Abdesselam, I. Adachi +461

We report a measurement of the ratios of branching fractions $R (D) = B (B ˉ \to D τ^{-} ν ˉ_{τ}) / B (B ˉ \to D ℓ^{-} ν ˉ_{ℓ})$ and $\mathcal{R}(D^{…

hep-ex2019★ 35 cited

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} τ^{+} ν_{τ}$

Belle Collaboration, A. Abdesselam, I. Adachi +457

We report the first measurement of the $D^{*-}$ meson polarization in the decay $B^{0} \to D^{*-} τ^{+} ν_{τ}$ using the full data sample of 772 $\times 1 0^{6}$ $B B ˉ$ pairs recorded…

hep-ex2018★ 1 cited

Measurements of branching fraction and $C P$ asymmetry of the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay at Belle

A. Abdesselam, I. Adachi, K. Adamczyk +446

We report the measurement of the branching fraction and $C P$ asymmetry for the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay. The analysis is performed on a data sample of…

hep-ex2016★ 26 cited

Measurement of the $τ$ lepton polarization in the decay $B ˉ \to D^{*} τ^{-} ν ˉ_{τ}$

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report the first measurement of the $τ$ lepton polarization in the decay $B ˉ \to D^{*} τ^{-} ν ˉ_{τ}$ as well as a new measurement of the ratio of the branching frac…

hep-ex2005★ 241 cited

Observation of a new charmonium state in double charmonium production in e+ e- annihilation at \sqrt{s} ~ 10.6 GeV

The Belle Collaboration, K. Abe

We report the first observation of a new charmonium state at a mass of $(3.943 \pm 0.006 \pm 0.006) G e V / c^{2}$ . This state, called X(3940), is observed in the process $e^+ e^- \to…

Experimental determination of the isospin of Λc​(2765)+/Σc​(2765)+

Measurement of R(D) and R(D∗) with a semileptonic tagging method

Measurement of the D∗− polarization in the decay B0→D∗−τ+ντ​

Measurements of branching fraction and CP asymmetry of the Bˉ0(B0)→KS0​K∓π± decay at Belle