B. Ko

activity

20002026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 4.1k across the 97 of their papers we have counts for

collaborators

99 papers

hep-ex2026

Achieving a 0.49 keV threshold in the COSINE-100 dark matter experiment

J. Kim, N. Carlin, D. F. F. S. Cavalcante +57

The COSINE-100 experiment searched for weakly interacting massive particles (WIMPs) with NaI(Tl) crystals at the Yangyang Underground Laboratory. Using its full 6-year dataset, we…

hep-ex2026

Probing unexplored spin-dependent dark matter-proton coupling with few-photoelectron threshold in COSINE-100

W. K. Kim, N. Carlin, J. Y. Cho +58

We report new constraints on the spin-dependent scattering cross section between low-mass dark matter and protons using data collected by the COSINE-100 experiment. By implementing…

hep-ex2026

The $ν$ EYE Neutrino Telescope: Conceptual Design Report

Shaomin Chen, YangHwan Ahn, Davide Franco +38

The $ν EYE$ neutrino project leverages the existing large pit at Yemilab located in South Korea, to reveal the existence of sterile neutrino, the up-turn of the neutrinos from th…

hep-ph2025

Forward neutrino production and event rates at the Future Circular Collider for hadron collisions

B. R. Ko, E. Won

A proposed future ultra high energy collider such as the Future Circular Collider is expected to produce intense and collimated neutrino beams from weak hadron decays. In this stud…

hep-ex2016★ 5 cited

Study of Two-Body $e^{+} e^{-} \to B_{s}^{()} B ˉ_{s}^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

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

We report results on the studies of the $e^{+} e^{-} \to B_{s}^{(*)} B ˉ_{s}^{(*)}$ processes. The results are based on a $121.4$ fb $^{- 1}$ data sample collected with the Belle detector a…

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★ 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-ex2015★ 28 cited

Inclusive and exclusive measurements of $B$ decays to $χ_{c 1}$ and $χ_{c 2}$ at Belle

V. Bhardwaj, K. Miyabayashi, E. Panzenböck +196

We report inclusive and exclusive measurements for $χ_{c 1}$ and $χ_{c 2}$ production in $B$ decays. We measure $B (B \to χ_{c 1} X)$ = $(3.03 \pm 0.05(\mbox{stat}) \pm 0.24(\…

hep-ex2015★ 79 cited

Study of $π^{0}$ pair production in single-tag two-photon collisions

The Belle Collaboration, M. Masuda, S. Uehara +177

We report a measurement of the differential cross section of $π^{0}$ pair production in single-tag two-photon collisions, $γ^{*} γ \to π^{0} π^{0}$ , in $e^{+} e^{-}$ scattering. The cross secti…

hep-ex2015★ 8 cited

Measurement of $e^{+} e^{-} \to γ χ_{c J}$ via initial state radiation at Belle

Belle Collaboration, Y. L. Han, X. L. Wang +142

The process $e^{+} e^{-} \to γ χ_{c J}$ ( $J$ =1, 2) is studied via initial state radiation using 980 fb $^{- 1}$ of data at and around the $Υ (n S)$ ( $n$ =1, 2, 3, 4, 5) resonances collected wi…

hep-ex2015

First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data

The BaBar, Belle Collaborations, : +471

We report a measurement of the time-dependent CP asymmetry of B0->D(*)CP h0 decays, where the light neutral hadron h0 is a pi0, eta or omega meson, and the neutral D meson is recon…

hep-ex2015★ 24 cited

Search for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sample

A. Heller, P. Goldenzweig, M. Heck +161

We search for the decay B+ -> l+ nu gamma with l+ = e+ or mu+ using the full Belle data set of 772 x 10^6 BBbar pairs, collected at the Y(4S) resonance with the Belle detector at t…

hep-ex2015★ 11 cited

Semi-inclusive studies of semileptonic $B_{s}$ decays at Belle

Belle Collaboration, C. Oswald, P. Urquijo +177

We present an analysis of the semi-inclusive decays $B_{s} \to D_{s}^{-} X ℓ^{+} ν$ and $B_{s} \to D_{s}^{*-} X ℓ^{+} ν$ , where $X$ denotes a final state that may consist of additional had…

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-ex2015★ 16 cited

Search for B decays to final states with the eta_c meson

Belle collaboration, A. Vinokurova, A. Kuzmin +156

We report a search for $B$ decays to selected final states with the $η_{c}$ meson: $B^{\pm} \to K^{\pm} η_{c} π^{+} π^{-}$ , $B^{\pm} \to K^{\pm} η_{c} ω$ , $B^{\pm} \to K^{\pm} η_{c} η$ and $B^{\pm}\to K…

hep-ex2015★ 5 cited

Measurement of the direct $C P$ asymmetry in $B ˉ \to X_{s + d} γ$ decays with a lepton tag

L. Pesántez, P. Urquijo, J. Dingfelder +180

We report the measurement of the direct $C P$ asymmetry in the radiative $B ˉ \to X_{s + d} γ$ decay using a data sample of $(772 \pm 11) \times 1 0^{6}$ $B B ˉ$ pairs collec…

hep-ex2015★ 34 cited

Measurements of the $Υ (10860)$ and $Υ (11020)$ resonances via $σ (e^{+} e^{-} \to Υ (n S) π^{+} π^{-})$

Belle Collaboration, D. Santel, K. Kinoshita +158

We report new measurements of the total cross sections for $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n$ = 1, 2, 3) and $e^{+} e^{-} \to b b ˉ$ from a high-luminosity fine scan of the region $\sq…

hep-ex2014

Study of CP Violation in Flavor Tagged and Untagged $D^{0} \to K^{-} π^{+}$ Decays

E. Won, B. R. Ko, B. Golob

We review $C P$ -violating observables in flavor tagged and untagged $D^{0} \to K^{-} π^{+}$ decays and evaluate the $C P$ asymmetry difference between the two decays. We note th…

hep-ex2014★ 11 cited

Measurement of Time-Dependent $C P$ Violation in $B^{0} \to η^{'} K^{0}$ Decays

Belle Collaboration, L. Šantelj, Y. Yusa +163

We present a measurement of the time-dependent $C P$ violation parameters in $B^{0} \to η^{'} K^{0}$ decays. The measurement is based on the full data sample containing $772 \times 1 0^{6}$ $B\ba…

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…

hep-ex2014★ 44 cited

Updated Cross Section Measurement of $e^{+} e^{-} \to K^{+} K^{-} J / ψ$ and $K_{S}^{0} K_{S}^{0} J / ψ$ via Initial State Radiation at Belle

Belle Collaboration, C. P. Shen, C. Z. Yuan +159

The cross sections of the processes $e^{+} e^{-} \to K^{+} K^{-} J / ψ$ and $K_{S}^{0} K_{S}^{0} J / ψ$ are measured via initial state radiation at center-of-mass energies between the threshold and 6.0~…

hep-ex2014★ 60 cited

Measurements of Branching Fractions of $τ$ Lepton Decays with one or more $K_{S}^{0}$

Belle Collaboration, S. Ryu, I. Adachi +147

We report measurements of branching fractions of $τ$ lepton decays to final states with a $K_{S}^{0}$ meson using a 669 fb $^{- 1}$ data sample accumulated with the Belle detector at…

hep-ex2014★ 16 cited

Measurement of the Lepton Forward-Backward Asymmetry in $B \to X_{s} ℓ^{+} ℓ^{-}$ Decays with a Sum of Exclusive Modes

Y. Sato, A. Ishikawa, H. Yamamoto +173

We report the first measurement of the lepton forward-backward asymmetry $A_{FB}$ as a function of the squared four-momentum of the dilepton system, $q^{2}$ , for the elect…

hep-ex2014★ 30 cited

Observation of $D^{0} - D ˉ^{0}$ Mixing in $e^{+} e^{-}$ Collisions

B. R. Ko, E. Won, I. Adachi +164

We observe $D^{0} - D ˉ^{0}$ mixing in the decay $D^{0} \to K^{+} π^{-}$ using a data sample of integrated luminosity 976 fb $^{- 1}$ collected with the Belle detector at the KEKB $e^+…

Achieving a 0.49 keV threshold in the COSINE-100 dark matter experiment

Probing unexplored spin-dependent dark matter-proton coupling with few-photoelectron threshold in COSINE-100

The νEYE Neutrino Telescope: Conceptual Design Report

Forward neutrino production and event rates at the Future Circular Collider for hadron collisions

Study of Two-Body e+e−→Bs(∗)​Bˉs(∗)​ Production in the Energy Range from 10.77 to 11.02 GeV

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

Measurement of the τ lepton polarization in the decay Bˉ→D∗τ−νˉτ​

Inclusive and exclusive measurements of B decays to χc1​ and χc2​ at Belle

Study of π0 pair production in single-tag two-photon collisions

Measurement of e+e−→γχcJ​ via initial state radiation at Belle

First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data

Search for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sample

Semi-inclusive studies of semileptonic Bs​ decays at Belle

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

Search for B decays to final states with the eta_c meson

Measurement of the direct CP asymmetry in Bˉ→Xs+d​γ decays with a lepton tag

Measurements of the Υ(10860) and Υ(11020) resonances via σ(e+e−→Υ(nS)π+π−)

Study of CP Violation in Flavor Tagged and Untagged D0→K−π+ Decays

Measurement of Time-Dependent CP Violation in B0→η′K0 Decays

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

Updated Cross Section Measurement of e+e−→K+K−J/ψ and KS0​KS0​J/ψ via Initial State Radiation at Belle

Measurements of Branching Fractions of τ Lepton Decays with one or more KS0​

Measurement of the Lepton Forward-Backward Asymmetry in B→Xs​ℓ+ℓ− Decays with a Sum of Exclusive Modes

Observation of D0−Dˉ0 Mixing in e+e− Collisions

The $ν$ EYE Neutrino Telescope: Conceptual Design Report

Study of Two-Body $e^{+} e^{-} \to B_{s}^{()} B ˉ_{s}^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

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

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

Inclusive and exclusive measurements of $B$ decays to $χ_{c 1}$ and $χ_{c 2}$ at Belle

Study of $π^{0}$ pair production in single-tag two-photon collisions

Measurement of $e^{+} e^{-} \to γ χ_{c J}$ via initial state radiation at Belle

Semi-inclusive studies of semileptonic $B_{s}$ decays at Belle

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 direct $C P$ asymmetry in $B ˉ \to X_{s + d} γ$ decays with a lepton tag

Measurements of the $Υ (10860)$ and $Υ (11020)$ resonances via $σ (e^{+} e^{-} \to Υ (n S) π^{+} π^{-})$

Study of CP Violation in Flavor Tagged and Untagged $D^{0} \to K^{-} π^{+}$ Decays

Measurement of Time-Dependent $C P$ Violation in $B^{0} \to η^{'} K^{0}$ Decays

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

Updated Cross Section Measurement of $e^{+} e^{-} \to K^{+} K^{-} J / ψ$ and $K_{S}^{0} K_{S}^{0} J / ψ$ via Initial State Radiation at Belle

Measurements of Branching Fractions of $τ$ Lepton Decays with one or more $K_{S}^{0}$

Measurement of the Lepton Forward-Backward Asymmetry in $B \to X_{s} ℓ^{+} ℓ^{-}$ Decays with a Sum of Exclusive Modes

Observation of $D^{0} - D ˉ^{0}$ Mixing in $e^{+} e^{-}$ Collisions