K. Kang

activity

20142026

most citedMeasurement of the branching ratio of

B ˉ \to D^{(*)} τ^{-} ν ˉ_{τ}

relative to

B ˉ \to D^{(*)} ℓ^{-} ν ˉ_{ℓ}

decays with hadronic tagging at Belle

676 citations · 4.9k across the 123 of their papers we have counts for

collaborators

129 papers

hep-ex2026

Search for the lepton-flavor-violating decay $τ^{\pm} \to μ^{\pm} γ$ at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +466

We present a search for the lepton-flavor-violating decay $τ^{\pm} \to μ^{\pm} γ$ using a data sample that corresponds to an integrated luminosity of 428 fb $^{- 1}$ recorded by the Bel…

hep-ex2026

Search for the $B^{0} \to K_{S}^{0} τ^{+} τ^{-}$ decay

Belle, Belle II Collaborations, : +432

We present the first search for $B^{0} \to K_{S}^{0} τ^{+} τ^{-}$ decays. We look for signal decays in $B^{0} B ˉ^{0}$ events produced in asymmetric-energy electron-positron collisions. T…

hep-ex2026

Charged-lepton identification at Belle~II

Belle II Collaboration, M. Abumusabh, I. Adachi +409

Effective particle identification capabilities are a strategic priority for the physics program of the Belle~II experiment. We describe the algorithms used at Belle~II for identify…

hep-ex2026

First evidence of $X (3872) \to π^{0} χ_{c 0} (1 P)$ and search for $X (3915) \to π^{0} χ_{c 1} (1 P)$

Belle, Belle II Collaborations, : +412

We search for the pionic transitions $X (3872) \to π^{0} χ_{c J} (1 P)$ $(J = 0, 1, 2)$ and $X (3915) \to π^{0} χ_{c 1}$ in $B^{+} \to π^{0} χ_{c J} K^{+}$ decays using the Belle and Belle~II data samples c…

hep-ex2026

Measurement of mixing-induced CP violation in the decay $B^{0} \to π^{0} π^{0}$

Belle II Collaboration, M. Abumusabh, I. Adachi +437

Measurements of charge-parity (CP) violation in quark transitions provide stringent tests of the current theory and sensitive probes of particles or interactions beyond it. We repo…

hep-ex2025

Observation of the radiative decay $D_{s} (2317)^{+} \to D_{s}^{*} γ$

Belle II Collaboration, M. Abumusabh, I. Adachi +367

We observe the radiative decay $D_{s 0}^{*} (2317)^{+} \to D_{s}^{*+} γ$ for the first time, with a significance exceeding $10$ standard deviations. The signal is found in the contin…

physics.ins-det2022★ 4 cited

Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector

R. Leboucher, K. Adamczyk, L. Aggarwal +78

The Silicon Vertex Detector (SVD), with its four double-sided silicon strip sensor layers, is one of the two vertex sub-detectors of Belle II operating at SuperKEKB collider (KEK,…

hep-ex2022★ 1 cited

First decay-time-dependent analysis of $B^{0} \to K_{S}^{0} π^{0}$ at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report measurements of the branching fraction ( $B$ ) and direct $C P$ -violating asymmetry ( $A_{C P}$ ) of the charmless decay $B^{0} \to K^{0} π^{0}$ at Belle II. A sample of…

hep-ex2022★ 1 cited

Study of Exclusive $B \to π e^{+} ν_{e}$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb $^{- 1}$ of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +590

We present a reconstruction of the semileptonic decays $B^{0} \to π^{-} e^{+} ν_{e}$ and $B^{+} \to π^{0} e^{+} ν_{e}$ in a sample corresponding to 189.3 fb $^{- 1}$ of Belle II data, using events w…

hep-ex2022★ 4 cited

Measurement of the branching fraction for the decay $B \to K^{*} (892) ℓ^{+} ℓ^{-}$ at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report a measurement of the branching fraction of $B \to K^{*} (892) ℓ^{+} ℓ^{-}$ decays, where $ℓ^{+} ℓ^{-} = μ^{+} μ^{-}$ or $e^{+} e^{-}$ , using electron-positron collisions recorde…

hep-ex2022

Search for $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ decays at Belle

Belle Collaboration, H. B. Jeon, K. H. Kang +219

We report the first search for the penguin-dominated process $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ using the full data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected with the Bell…

hep-ex2022★ 3 cited

Search for a light Higgs boson in single-photon decays of $Υ (1 S)$ using $Υ (2 S) \to π^{+} π^{-} Υ (1 S)$ tagging method

Belle Collaboration, S. Jia, C. P. Shen +210

We search for a light Higgs boson ( $A^{0}$ ) decaying into a $τ^{+} τ^{-}$ or $μ^{+} μ^{-}$ pair in the radiative decays of $Υ (1 S)$ . The production of $Υ (1 S)$ mesons is tagged by $Υ(2S)\to π^+…

hep-ex2022★ 9 cited

Search for tetraquark states $X_{cc s ˉ s ˉ}$ in $D_{s}^{+} D_{s}^{+} (D_{s}^{+} D_{s}^{+})$ final states at Belle

Belle Collaboration, X. Y. Gao, Y. Li +206

A search for double-heavy tetraquark state candidates $X_{cc s ˉ s ˉ}$ decaying to $D_{s}^{+} D_{s}^{+}$ and $D_{s}^{*+} D_{s}^{*+}$ is presented for the first time using the…

hep-ex2022

Search for the decay $B_{s}^{0} \to η^{'} K_{S}^{0}$

Belle Collaboration, T. Pang, V. Savinov +206

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

hep-ex2022

Search for charged lepton flavor violating decays of $Υ (1 S)$

Belle Collaboration, S. Patra, V. Bhardwaj +216

We present a search for the charged lepton-flavor-violating decays $Υ (1 S) \to ℓ ℓ^{'}$ and radiative charged lepton-flavour-violating decays $Υ(1S)\rightarrowγ\ell\el…

hep-ex2021★ 1 cited

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

Belle Collaboration, B. Bhuyan, K. J. Nath +184

We report results from a 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 detector at the KEKB asymmetric-e…

hep-ex2021★ 5 cited

First Measurement of the $Λ_{c}^{+} \to p η^{'}$ decay

Belle Collaboration, S. X. Li, J. X. Cui +197

We present the first measurement of the branching fraction of the singly Cabibbo-suppressed (SCS) decay $Λ_{c}^{+} \to p η^{'}$ with $η^{'} \to η π^{+} π^{-}$ , using a data sample corresponding to…

hep-ex2021★ 24 cited

First test of Lepton Flavor Universality in the charmed baryon decays $Ω_{c}^{0} \to Ω^{-} ℓ^{+} ν_{ℓ}$ using data of the Belle experiment

Belle Collaboration, Y. B. Li, C. P. Shen +203

We present the first observation of the $Ω_{c}^{0} \to Ω^{-} μ^{+} ν_{μ}$ decay and present measurements of the branching fraction ratios of the $Ω_{c}^{0} \to Ω^{-} \ell^{+} ν_{\ell…

hep-ex2021

Exclusive $B \to X_{u} ℓ ν_{ℓ}$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb $^{- 1}$ of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +565

We present a reconstruction in early data of the semileptonic decay $B^{+} \to π^{0} ℓ^{+} ν_{ℓ}$ , and first results of a reconstruction of the decays $B^{+} \to ρ^{0} ℓ^{+} ν_{ℓ}$ and…

hep-ex2021

Combined analysis of Belle and Belle II data to determine the CKM angle $ϕ_{3}$ using $B^{+} \to D (K_{S}^{0} h^{-} h^{+}) h^{+}$ decays

Belle, Belle II Collaborations, : +319

We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle $ϕ_{3}$ (also known as~ $γ$ ) using a model-independent Dalitz plot analysis of \linebreak $B^+\t…

hep-ex2021

Measurements of $q^{2}$ Moments of Inclusive $B \to X_{c} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Tagging

Belle Collaboration, R. van Tonder, L. Cao +202

We present the measurement of the first to fourth order moments of the four-momentum transfer squared, $q^{2}$ , of inclusive $B \to X_{c} ℓ^{+} ν_{ℓ}$ decays using the full…

hep-ex2021★ 1 cited

Study of $χ_{b J} (n P) \to ω Υ (1 S)$ at Belle

Belle Collaboration, A. Abdesselam, I. Adachi +470

We report results from a study of hadronic transitions of the $χ_{b J} (n P)$ states of bottomonium at Belle. The $P$ -wave states are reconstructed in transitions to the $Υ (1 S)$ with…

hep-ex2021

Search for $B^{0} \to τ^{\pm} ℓ^{\mp}$ ( $ℓ = e, μ$ ) with a hadronic tagging method at Belle

Belle Collaboration, H. Atmacan, A. J. Schwartz +219

We present a search for the lepton-flavor-violating decays $B^{0} \to τ^{\pm} ℓ^{\mp}$ , where $ℓ = (e, μ)$ , using the full data sample of $772 \times 1 0^{6}$ $B B$ pairs…

hep-ex2021★ 11 cited

Precise measurement of the $D^{0}$ and $D^{+}$ lifetimes at Belle II

Belle II collaboration, F. Abudinén, I. Adachi +385

We report a measurement of the $D^{0}$ and $D^{+}$ lifetimes using $D^{0} \to K^{-} π^{+}$ and $D^{+} \to K^{-} π^{+} π^{+}$ decays reconstructed in $e^{+} e^{-} \to c c ˉ$ data recorded by the Belle II exp…

Search for the lepton-flavor-violating decay τ±→μ±γ at Belle II

Search for the B0→KS0​τ+τ− decay

Charged-lepton identification at Belle~II

First evidence of X(3872)→π0χc0​(1P) and search for X(3915)→π0χc1​(1P)

Measurement of mixing-induced CP violation in the decay B0→π0π0

Observation of the radiative decay Ds​(2317)+→Ds∗​γ

Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector

First decay-time-dependent analysis of B0→KS0​π0 at Belle II

Study of Exclusive B→πe+νe​ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb−1 of Belle II Data

Measurement of the branching fraction for the decay B→K∗(892)ℓ+ℓ− at Belle II

Search for B0→KS0​KS0​γ decays at Belle

Search for a light Higgs boson in single-photon decays of Υ(1S) using Υ(2S)→π+π−Υ(1S) tagging method

Search for tetraquark states Xccsˉsˉ​ in Ds+​Ds+​ (Ds∗+​Ds∗+​) final states at Belle

Search for the decay Bs0​→η′KS0​

Search for charged lepton flavor violating decays of Υ(1S)

Search for the decay Bs0​→ηη

First Measurement of the Λc+​→pη′ decay

First test of Lepton Flavor Universality in the charmed baryon decays Ωc0​→Ω−ℓ+νℓ​ using data of the Belle experiment

Exclusive B→Xu​ℓνℓ​ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb−1 of Belle II Data

Combined analysis of Belle and Belle II data to determine the CKM angle ϕ3​ using B+→D(KS0​h−h+)h+ decays

Measurements of q2 Moments of Inclusive B→Xc​ℓ+νℓ​ Decays with Hadronic Tagging

Study of χbJ​(nP)→ωΥ(1S) at Belle

Search for B0→τ±ℓ∓ (ℓ=e,μ) with a hadronic tagging method at Belle

Precise measurement of the D0 and D+ lifetimes at Belle II

Search for the lepton-flavor-violating decay $τ^{\pm} \to μ^{\pm} γ$ at Belle II

Search for the $B^{0} \to K_{S}^{0} τ^{+} τ^{-}$ decay

First evidence of $X (3872) \to π^{0} χ_{c 0} (1 P)$ and search for $X (3915) \to π^{0} χ_{c 1} (1 P)$

Measurement of mixing-induced CP violation in the decay $B^{0} \to π^{0} π^{0}$

Observation of the radiative decay $D_{s} (2317)^{+} \to D_{s}^{*} γ$

First decay-time-dependent analysis of $B^{0} \to K_{S}^{0} π^{0}$ at Belle II

Study of Exclusive $B \to π e^{+} ν_{e}$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb $^{- 1}$ of Belle II Data

Measurement of the branching fraction for the decay $B \to K^{*} (892) ℓ^{+} ℓ^{-}$ at Belle II

Search for $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ decays at Belle

Search for a light Higgs boson in single-photon decays of $Υ (1 S)$ using $Υ (2 S) \to π^{+} π^{-} Υ (1 S)$ tagging method

Search for tetraquark states $X_{cc s ˉ s ˉ}$ in $D_{s}^{+} D_{s}^{+} (D_{s}^{+} D_{s}^{+})$ final states at Belle

Search for the decay $B_{s}^{0} \to η^{'} K_{S}^{0}$

Search for charged lepton flavor violating decays of $Υ (1 S)$

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

First Measurement of the $Λ_{c}^{+} \to p η^{'}$ decay

First test of Lepton Flavor Universality in the charmed baryon decays $Ω_{c}^{0} \to Ω^{-} ℓ^{+} ν_{ℓ}$ using data of the Belle experiment

Exclusive $B \to X_{u} ℓ ν_{ℓ}$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb $^{- 1}$ of Belle II Data

Combined analysis of Belle and Belle II data to determine the CKM angle $ϕ_{3}$ using $B^{+} \to D (K_{S}^{0} h^{-} h^{+}) h^{+}$ decays

Measurements of $q^{2}$ Moments of Inclusive $B \to X_{c} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Tagging

Study of $χ_{b J} (n P) \to ω Υ (1 S)$ at Belle

Search for $B^{0} \to τ^{\pm} ℓ^{\mp}$ ( $ℓ = e, μ$ ) with a hadronic tagging method at Belle

Precise measurement of the $D^{0}$ and $D^{+}$ lifetimes at Belle II