Y. Nagasaka

activity

20002022

most citedObservation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays

2k citations · 9.4k across the 91 of their papers we have counts for

collaborators

91 papers

physics.ins-det2022★ 1 cited

The Double Chooz antineutrino detectors

Double Chooz Collaboration, H. de Kerret, Y. Abe +247

This article describes the setup and performance of the near and far detectors in the Double Chooz experiment. The electron antineutrinos of the Chooz nuclear power plant were meas…

hep-ex2021★ 3 cited

Search for the Decay $B_{s}^{0} \to η^{'} η$

Belle Collaboration, N. K. Nisar, V. Savinov +197

We report the results of the first search for the decay $B_{s}^{0} \to η^{'} η$ using $121.4 fb^{- 1}$ of data collected at the $Υ (5 S)$ resonance with the Belle dete…

hep-ex2019★ 236 cited

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

The Belle Collaboration, G. Caria, P. Urquijo +188

The experimental results on 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★ 134 cited

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

S. Choudhury, S. Sandilya, K. Trabelsi +220

We present measurements of the branching fractions for the decays $B \to K μ^{+} μ^{-}$ and $B \to K e^{+} e^{-}$ , and their ratio ( $R_{K}$ ), using a data sample of 711 $f b^{- 1}$ that…

hep-ex2019★ 170 cited

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Belle Collaboration, S. Wehle, I. Adachi +179

We present a measurement of $R_{K^{*}}$ , the branching fraction ratio $B (B \to K^{*} μ^{+} μ^{-})$ / $B (B \to K^{*} e^{+} e^{-})$ , for both charged and neutral $B$ meso…

hep-ex2018★ 112 cited

Measurement of the CKM Matrix Element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} ν_{ℓ}$ at Belle

E. Waheed, P. Urquijo, I. Adachi +184

We present a new measurement of the CKM matrix element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} ν_{ℓ}$ decays, reconstructed with the full Belle data set of $711 f b^{- 1}$ i…

hep-ex2018

Study of charmless decays $B^{\pm} \to K_{S}^{0} K_{S}^{0} h^{\pm}$ ( $h = K, π$ ) at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +449

We report a search for charmless hadronic decays of charged $B$ mesons to the final states $K_{S}^{0} K_{S}^{0} K^{\pm}$ and $K_{S}^{0} K_{S}^{0} π^{\pm}$ . The results are based o…

hep-ex2017★ 36 cited

Precise determination of the CKM matrix element $∣ V_{c b} ∣$ with $B ˉ^{0} \to D^{* +} ℓ^{-} ν ˉ_{ℓ}$ decays with hadronic tagging at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +459

The precise determination of the CKM matrix element $∣ V_{c b} ∣$ is important for carrying out tests of the flavour sector of the Standard Model. In this article we prese…

hep-ex2016★ 28 cited

Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors

T. Abrahão, H. Almazan, J. C. dos Anjos +107

A study on cosmic muons has been performed for the two identical near and far neutrino detectors of the Double Chooz experiment, placed at $\sim$ 120 and $\sim$ 300 m.w.e. undergroun…

hep-ex2016

Measurement of Michel Parameters ( $η ˉ$ , $ξ κ$ ) in the radiative leptonic decay of tau at Belle

The Belle Collaboration, A. Abdesselam, I. Adachi +445

We present the first measurement of the Michel parameters $η ˉ$ and $ξ κ$ in the radiative leptonic decay of the $τ$ lepton using 703 f $b^{- 1}$ of data collected with the…

hep-ex2016★ 14 cited

Measurement of $C P$ asymmetry in the $D^{0} \to K_{S}^{0} K_{S}^{0}$ decay at Belle

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

We report a measurement of the time-integrated $C P$ asymmetry in the neutral charm meson decay $D^{0} \to K_{S}^{0} K_{S}^{0}$ using 921~fb $^{- 1}$ data collected at the $Υ (4 S)$ and $Υ (5 S)$ r…

hep-ex2016

Evidence for the decay $B^{0} \to η η$

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

We report a search for $B^{0} \to η η$ with a data sample corresponding to an integrated luminosity of $698 fb^{- 1}$ containing $753 \times 1 0^{6}$ $B B ˉ$ pairs collected…

hep-ex2016★ 3 cited

Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays

A. Abdesselam, I. Adachi, K. Adamczyk +444

We report a study of radiative decays of χ_{bJ}(1P)(J=0,1,2) mesons into 74 hadronic final states comprising charged and neutral pions, kaons, protons; out of these, 41 modes are o…

hep-ex2016★ 103 cited

Angular analysis of $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$

Belle Collaboration, A. Abdesselam, I. Adachi +442

We present a measurement of angular observables, $P_{4}^{'}$ , $P_{5}^{'}$ , $P_{6}^{'}$ , $P_{8}^{'}$ , in the decay $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$ , where $ℓ^{+} ℓ^{-}$ is either $e^{+} e^{-}$ or $μ^+…

physics.ins-det2016★ 13 cited

Characterization of the Spontaneous Light Emission of the PMTs used in the Double Chooz Experiment

Double Chooz collaboration, Y. Abe, T. Abrahão +146

During the commissioning of the first of the two detectors of the Double Chooz experiment, an unexpected and dominant background caused by the emission of light inside the optical…

hep-ex2016★ 49 cited

Measurement of the branching ratio of $B ˉ^{0} \to D^{+} τ^{-} ν ˉ_{τ}$ relative to $B ˉ^{0} \to D^{+} ℓ^{-} ν ˉ_{ℓ}$ decays with a semileptonic tagging method

A. Abdesselam, I. Adachi, K. Adamczyk +441

We report a measurement of ratio $R (D^{*}) = B (B ˉ^{0} \to D^{*+} τ^{-} ν ˉ_{τ}) / B (B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ})$ , where $ℓ$ denot…

hep-ex2015★ 10 cited

Search for $B^{+} \to e^{+} ν$ and $B^{+} \to μ^{+} ν$ decays using hadronic tagging

Y. Yook, Y. -J. Kwon, A. Abdesselam +174

We present a search for the rare leptonic decays $B^{+} \to e^{+} ν_{e}$ and $B^{+} \to μ^{+} ν_{μ}$ , using the full $Υ (4 S)$ data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected with the…

hep-ex2015★ 1 cited

Measurement of the amplitude ratio of $B^{0} \to D^{0} K^{* 0}$ and $B^{0} \to D^{0} ˉ K^{* 0}$ decays with a model-independent Dalitz plot analysis using $D \to K_{S}^{0} π^{+} π^{-}$ decays

A. Abdesselam, I. Adachi, K. Adamczyk +409

We report a measurement of the amplitude ratio $r_{S}$ of $B^{0} \to D^{0} K^{* 0}$ and $B^{0} \to D^{0} ˉ K^{* 0}$ decays with a model-independent Dalitz plot analysis using $D\to K_S^0π^+π…

hep-ex2014

Measurement of the branching fraction of $B^{+} \to τ^{+} ν_{τ}$ decays with the semileptonic tagging method and the full Belle data sample

Belle Collaboration, A. Abdesselam, I. Adachi +392

We report a measurement of the branching fraction of $B^{+} \to τ^{+} ν_{τ}$ decays using a data sample of $772 \times 1 0^{6} B B ˉ$ pairs, collected at the $Υ (4 S)$ resonance with the…

physics.ins-det2014★ 15 cited

Ortho-positronium observation in the Double Chooz Experiment

Y. Abe, J. C. dos Anjos, J. C. Barriere +143

The Double Chooz experiment measures the neutrino mixing angle $θ_{13}$ by detecting reactor $ν ˉ_{e}$ via inverse beta decay. The positron-neutron space and time coincidence allow…

hep-ex2014★ 193 cited

Improved measurements of the neutrino mixing angle $θ_{13}$ with the Double Chooz detector

Y. Abe, J. C. dos Anjos, J. C. Barriere +143

The Double Chooz experiment presents improved measurements of the neutrino mixing angle $θ_{13}$ using the data collected in 467.90 live days from a detector positioned at an avera…

hep-ex2014★ 10 cited

Search for $B^{+} \to e^{+} ν$ and $B^{+} \to μ^{+} ν$ decays using hadronic tagging

Belle Collaboration, Y. Yook, Y. -J. Kwon +175

physics.ins-det2014★ 15 cited

Precision Muon Reconstruction in Double Chooz

Double Chooz collaboration, Y. Abe, J. C. dos Anjos +141

We describe a muon track reconstruction algorithm for the reactor anti-neutrino experiment Double Chooz. The Double Chooz detector consists of two optically isolated volumes of liq…

hep-ex2014

Measurements of the masses and widths of the $Σ_{c} (2455)^{0/ ++}$ and $Σ_{c} (2520)^{0/ ++}$ baryons

Belle Collaboration, S. -H. Lee, B. R. Ko +160

We present measurements of the masses and decay widths of the baryonic states $Σ_{c} (2455)^{0/ ++}$ and $Σ_{c} (2520)^{0/ ++}$ using a data sample corresponding to an integrated lumin…

The Double Chooz antineutrino detectors

Search for the Decay Bs0​→η′η

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

Test of lepton flavor universality and search for lepton flavor violation in B→Kℓℓ decays

Test of lepton-flavor universality in B→K∗ℓ+ℓ− decays at Belle

Measurement of the CKM Matrix Element ∣Vcb​∣ from B0→D∗−ℓ+νℓ​ at Belle

Study of charmless decays B±→KS0​KS0​h± (h=K,π) at Belle

Precise determination of the CKM matrix element ∣Vcb​∣ with Bˉ0→D∗+ℓ−νˉℓ​ decays with hadronic tagging at Belle

Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors

Measurement of Michel Parameters (ηˉ​, ξκ) in the radiative leptonic decay of tau at Belle

Measurement of CP asymmetry in the D0→KS0​KS0​ decay at Belle

Evidence for the decay B0→ηη

Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays

Angular analysis of B0→K∗(892)0ℓ+ℓ−

Characterization of the Spontaneous Light Emission of the PMTs used in the Double Chooz Experiment

Measurement of the branching ratio of Bˉ0→D∗+τ−νˉτ​ relative to Bˉ0→D∗+ℓ−νˉℓ​ decays with a semileptonic tagging method

Search for B+→e+ν and B+→μ+ν decays using hadronic tagging

Measurement of the amplitude ratio of B0→D0K∗0 and B0→D0ˉK∗0 decays with a model-independent Dalitz plot analysis using D→KS0​π+π− decays

Measurement of the branching fraction of B+→τ+ντ​ decays with the semileptonic tagging method and the full Belle data sample

Ortho-positronium observation in the Double Chooz Experiment

Improved measurements of the neutrino mixing angle θ13​ with the Double Chooz detector

Search for B+→e+ν and B+→μ+ν decays using hadronic tagging

Precision Muon Reconstruction in Double Chooz

Measurements of the masses and widths of the Σc​(2455)0/++ and Σc​(2520)0/++ baryons

Search for the Decay $B_{s}^{0} \to η^{'} η$

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

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Measurement of the CKM Matrix Element $∣ V_{c b} ∣$ from $B^{0} \to D^{*-} ℓ^{+} ν_{ℓ}$ at Belle

Study of charmless decays $B^{\pm} \to K_{S}^{0} K_{S}^{0} h^{\pm}$ ( $h = K, π$ ) at Belle

Precise determination of the CKM matrix element $∣ V_{c b} ∣$ with $B ˉ^{0} \to D^{* +} ℓ^{-} ν ˉ_{ℓ}$ decays with hadronic tagging at Belle

Measurement of Michel Parameters ( $η ˉ$ , $ξ κ$ ) in the radiative leptonic decay of tau at Belle

Measurement of $C P$ asymmetry in the $D^{0} \to K_{S}^{0} K_{S}^{0}$ decay at Belle

Evidence for the decay $B^{0} \to η η$

Angular analysis of $B^{0} \to K^{*} (892)^{0} ℓ^{+} ℓ^{-}$

Measurement of the branching ratio of $B ˉ^{0} \to D^{+} τ^{-} ν ˉ_{τ}$ relative to $B ˉ^{0} \to D^{+} ℓ^{-} ν ˉ_{ℓ}$ decays with a semileptonic tagging method

Search for $B^{+} \to e^{+} ν$ and $B^{+} \to μ^{+} ν$ decays using hadronic tagging

Measurement of the amplitude ratio of $B^{0} \to D^{0} K^{* 0}$ and $B^{0} \to D^{0} ˉ K^{* 0}$ decays with a model-independent Dalitz plot analysis using $D \to K_{S}^{0} π^{+} π^{-}$ decays

Measurement of the branching fraction of $B^{+} \to τ^{+} ν_{τ}$ decays with the semileptonic tagging method and the full Belle data sample

Improved measurements of the neutrino mixing angle $θ_{13}$ with the Double Chooz detector

Search for $B^{+} \to e^{+} ν$ and $B^{+} \to μ^{+} ν$ decays using hadronic tagging

Measurements of the masses and widths of the $Σ_{c} (2455)^{0/ ++}$ and $Σ_{c} (2520)^{0/ ++}$ baryons