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Publications (79)

hep-ex2025

Measurement of the CP asymmetry in $D^{+} \to I ¨ ^{+} I ¨ ^{0}$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +402

We measure the CP asymmetry in $D^{+} \to I ¨ ^{+} I ¨ ^{0}$ decays reconstructed in $e^{+} e^{-}$ collisions at the Belle II experiment using a data set corresponding to an integrated luminosit…

hep-ex2025

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

I. Adachi, L. Aggarwal, H. Ahmed +402

Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we search f…

hep-ex2025

Determination of $∣ V_{c b} ∣$ using $B \to D ℓ I^½_{ℓ}$ Decays at Belle II

Belle II Collaboration, I. Adachi, K. Adamczyk +407

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element $∣ V_{c b} ∣$ from the decay $B \to D ℓ I^½_{ℓ}$ using a $365 fb^{- 1}$ $e^{+} e^{-} \to I^¥ (4 S) \to B B ˉ$ …

hep-ex2025

Search for $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ decays at the Belle II experiment

Belle II Collaboration, I. Adachi, K. Adamczyk +446

We present a search for the rare flavor-changing neutral-current decay $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ with data collected by the Belle II experiment at the SuperKEKB electron-posit…

hep-ex2026

Measurement of time-dependent $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-} I^^{3}$ decays at Belle and Belle II

Belle, Belle II Collaborations, : +350

We present a measurement of the time-dependent $C P$ asymmetry in $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-} I^^{3}$ decays using a data set of 365 fb $^{- 1}$ recorded by the Belle II experim…

hep-ex2025

Model-agnostic likelihood for the reinterpretation of the $B^{+} \to K^{+} I^½ I^ˉ ½$ measurement at Belle II

Belle II Collaboration, M. Abumusabh, I. Adachi +374

We recently measured the branching fraction of the $B^{+} \to K^{+} I^½ I^ˉ ½$ decay using 362fb $^{- 1}$ of on-resonance $e^{+} e^{-}$ collision data under the assumption of Standar…

Publications (79)

Measurement of the CP asymmetry in D+→I¨+I¨0 decays at Belle II

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

Determination of ∣Vcb​∣ using B→DℓI^½ℓ​ Decays at Belle II

Search for B0→K∗0I¨+I¨− decays at the Belle II experiment

Measurement of time-dependent CP asymmetries in B0→KS0​I¨+I¨−I^3 decays at Belle and Belle II

Model-agnostic likelihood for the reinterpretation of the B+→K+I^½I^ˉ½ measurement at Belle II

Search for the decay B0→I^3I^3 using Belle and Belle II data

Searches for charged-lepton-flavor violation in I¨bJ​(1P) decays

Measurement of branching fractions and direct CP asymmetries for B→KI¨ and B→I¨I¨ decays at Belle II

Study of B+→I^¼+I^½I^​¼ decays at Belle and Belle II

Search for e+e−→I^3I¨bJ​ (J = 0, 1, 2) near s​=10.746 GeV at Belle II

Charged-hadron identification at Belle II

Study of e+e−→h+h−J/I¨ (h=I¨, K, p) via initial-state radiation at Belle~II

Measurement of the time-integrated CP asymmetry in D0→KS0​KS0​ decays using opposite-side flavor tagging at Belle and Belle II

Search for lepton flavor-violating decay modes B0→K∗0I¨±ℓ∓ (ℓ=e,I^¼) with hadronic B-tagging at Belle and Belle II

Search for axion-like particles decaying to two photons at Belle II

Measurement of inclusive B→Xu​ℓI^½ partial branching fractions and ∣Vub​∣ at Belle II

Measurement of B→K∗(892)I^3 decays at Belle II

Tests of light-lepton universality in angular asymmetries of B0→D∗−ℓI^½ decays

Measurement of the I¨-lepton mass with the Belle~II experiment

Measurements of the branching fractions of I^c+​→I^£+KS0​, I^c+​→I^0I¨+, and I^c+​→I^0K+ at Belle and Belle II

Measurement of the CP asymmetry in D0→I¨+I¨−I¨0 decays at Belle II

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

Measurement of the time-integrated CP asymmetry in D0→I¨0I¨0 decays at Belle II

A test of lepton flavor universality with a measurement of R(D∗) using hadronic B tagging at the Belle II experiment

Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment

Measurements of the branching fractions of I^c0​→I^0I¨0, I^c0​→I^0I^⋅, and I^c0​→I^0I^⋅′ and asymmetry parameter of I^c0​→I^0I¨0

Measurement of B+→I¨+I^½I¨​ branching fraction with a hadronic tagging method at Belle II

Search for the lepton-flavor-violating I¨−→e∓ℓ±ℓ∓ decays at Belle II

Search for lepton-flavor-violating I¨−→I^¼−I^¼+I^¼− decays at Belle II

New graph-neural-network flavor tagger for Belle II and measurement of sin2I¨1​ in B0→J/I¨KS0​ decays

Measurement of branching-fraction ratios and CP asymmetries in B±→DCP±​K± decays at Belle and Belle II

A search for feebly-interacting particles in B decays with missing energy at Belle

Measurement of time-dependent CP violation parameters in B0→KS0​I¨0I^3 decays at Belle and Belle II

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for B→I¨I^3 decays using Belle and Belle II data

Measurement of the energy dependence of the e+e−→BBˉ, BBˉ∗, and B∗Bˉ∗ cross sections at Belle~II

Charged-lepton identification at Belle~II

Observation of time-dependent CP violation and measurement of the branching fraction of B0→J/I¨I¨0 decays

Improved measurement of Born cross sections for I¨bJ​I¨ and I¨bJ​(I¨+I¨−I¨0)non−I¨​ (J = 0, 1, 2) at Belle and Belle II

Search for I^0p, I^c◯−p, and I^c◯−n dibaryons in I^¥(1S) and I^¥(2S) decays at Belle

Test of lepton flavor universality with measurements of R(D+) and R(D∗+) using semileptonic B tagging at the Belle II experiment

Determination of ∣Vcb​∣ using B0→D∗+ℓ−I^ˉ½ℓ​ decays with Belle II

Measurement of CP asymmetries in B0→KS0​I¨0I^3 decays at Belle II

Measurement of mixing-induced CP violation in the decay B0→I¨0I¨0

Measurement of CP asymmetries in B0→KS0​KS0​KS0​ decays at Belle II

Measurement of the Branching Fraction of I^c+​→pKS0​I¨0 at Belle

Determination of ∣Vub​∣ from simultaneous measurements of untagged B0→I¨−ℓ+I^½ℓ​ and B+→I¨0ℓ+I^½ℓ​ decays

First search for B→Xs​I^½I^ˉ½ decays

Observation of e+e−→I^⋅I^¥(2S) and search for e+e−→I^⋅I^¥(1S), I^3Xb​ at s​ near 10.75 GeV

First measurement of the masses of the I^¥1​(1D) and I^¥3​(1D) states and the energy dependence of the cross sections for e+e−→I^¥J​(1D)I^⋅ and e+e−→I^¥J​(1D)I¨+I¨−

Search for the e+e−→I^⋅b​(1S)I¨ and e+e−→I¨b0​(1P)I¨ processes at s​=10.745GeV

Search for the decay B+→K+τ+τ− using data from the Belle and Belle II experiments

Determination of the CKM angle I¨3​ from a combination of Belle and Belle II results

Search for an Axion-Like Particle in B→K(∗)a(→I^3I^3) Decays at Belle

Measurement of CP asymmetries in B0→I^⋅′Ks0​ decays at Belle II

First Measurement of R(XI¨/ℓ​) as an Inclusive Test of the b→cI¨I^½ Anomaly

First evidence of X(3872)→I¨0I¨c0​(1P) and search for X(3915)→I¨0I¨c1​(1P)

Search for lepton flavor-violating decay modes B0→KS0​I¨±ℓ∓ (ℓ=I^¼,e) with hadronic B-tagging at Belle and Belle II

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

Evidence for B+→K+I^½I^ˉ½ decays

Search for the B0→KS0​I¨+I¨− decay

Measurement of the branching fractions of Bˉ→D(∗)K−K(S)(∗)0​ and Bˉ→D(∗)Ds−​ decays at Belle II

The Belle II Detector Upgrades Framework Conceptual Design Report

Search for a I^¼+I^¼− resonance in four-muon final states at Belle II

Measurement of the D0→K−I¨+e+e− branching fraction and search for D0→I¨+I¨−e+e− and D0→K+K−e+e− decays at Belle

Search for the baryon number and lepton number violating decays I¨−→I^I¨− and I¨−→I^ˉI¨− at Belle II

Study of I^¥(10753) decays to I¨+I¨−I^¥(nS) final states at Belle II

Search for lepton-flavor-violating I¨−→ℓ−Ks0​ decays at Belle and Belle II

Observation of the decays B+→I^£c​(2455)++I^c−​ and B0→I^£c​(2455)0I^c0​

Measurement of CP asymmetries in B0→I¨KS0​ decays with Belle II

Measurement of the branching fraction and CP-violating asymmetry of the decay B0→I¨0I¨0 using 387 million bottom-antibottom meson pairs in Belle II data

Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment

Measurement of the branching fraction of the decay B−→D0I¨(770)− at Belle II

Search for Rare b→dℓ+ℓ− Transitions at Belle

Measurement of the inclusive branching fractions for Bs0​ decays into D mesons via hadronic tagging

Study of e+e−→I¨+I¨−I^¥(1D) at Belle II

Measurement of the e+e−→I¨+I¨−I¨0 cross section in the energy range 0.62-3.50 GeV at Belle II

Observation of the decays B+→I^£c​(2455)++I^ˉc′−​ and B0→I^£c​(2455)0I^ˉc′0​

Test of light-lepton universality in I¨ decays with the Belle II experiment

Measurement of the CP asymmetry in $D^{+} \to I ¨ ^{+} I ¨ ^{0}$ decays at Belle II

Determination of $∣ V_{c b} ∣$ using $B \to D ℓ I^½_{ℓ}$ Decays at Belle II

Search for $B^{0} \to K^{* 0} I ¨ ^{+} I ¨ ^{-}$ decays at the Belle II experiment

Measurement of time-dependent $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-} I^^{3}$ decays at Belle and Belle II

Model-agnostic likelihood for the reinterpretation of the $B^{+} \to K^{+} I^½ I^ˉ ½$ measurement at Belle II

Search for the decay $B^{0} \to I^^{3} I^^{3}$ using Belle and Belle II data

Searches for charged-lepton-flavor violation in $I ¨ _{b J} (1 P)$ decays

Measurement of branching fractions and direct $C P$ asymmetries for $B \to K I ¨ $ and $B \to I ¨ I ¨ $ decays at Belle II

Study of $B^{+} \to I^¼^{+} I^½_{I^} ¼$ decays at Belle and Belle II

Search for $e^{+} e^{-} \to I^^{3} I ¨ _{b J}$ ( $J$ = 0, 1, 2) near $s = 10.746$ GeV at Belle II

Study of $e^{+} e^{-} \to h^{+} h^{-} J / I ¨ (h = I ¨ , K, p)$ via initial-state radiation at Belle~II

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K_{S}^{0} K_{S}^{0}$ decays using opposite-side flavor tagging at Belle and Belle II

Search for lepton flavor-violating decay modes $B^{0} \to K^{* 0} I ¨ ^{\pm} ℓ^{\mp}$ ( $ℓ = e, I^¼$ ) with hadronic B-tagging at Belle and Belle II

Measurement of inclusive $B \to X_{u} ℓ I^½$ partial branching fractions and $∣ V_{u b} ∣$ at Belle II

Measurement of $B \to K^{*} (892) I^^{3}$ decays at Belle II

Tests of light-lepton universality in angular asymmetries of $B^{0} \to D^{*-} ℓ I^½$ decays

Measurement of the $I ¨ $ -lepton mass with the Belle~II experiment

Measurements of the branching fractions of $I^_{c}^{+} \to I^£^{+} K_{S}^{0}$ , $I^_{c}^{+} \to I^^{0} I ¨ ^{+}$ , and $I^_{c}^{+} \to I^^{0} K^{+}$ at Belle and Belle II

Measurement of the $C P$ asymmetry in $D^{0} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ decays at Belle II

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

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to I ¨ ^{0} I ¨ ^{0}$ decays at Belle II

A test of lepton flavor universality with a measurement of $R (D^{*})$ using hadronic $B$ tagging at the Belle II experiment

Measurements of the branching fractions of $I^_{c}^{0} \to I^^{0} I ¨ ^{0}$ , $I^_{c}^{0} \to I^^{0} I^\cdot$ , and $I^_{c}^{0} \to I^^{0} I^\cdot^{'}$ and asymmetry parameter of $I^_{c}^{0} \to I^^{0} I ¨ ^{0}$

Measurement of $B^{+} \to I ¨ ^{+} I^½_{I ¨} $ branching fraction with a hadronic tagging method at Belle II

Search for the lepton-flavor-violating $I ¨ ^{-} \to e^{\mp} ℓ^{\pm} ℓ^{\mp}$ decays at Belle II

Search for lepton-flavor-violating $I ¨ ^{-} \to I^¼^{-} I^¼^{+} I^¼^{-}$ decays at Belle II

New graph-neural-network flavor tagger for Belle II and measurement of $sin 2 I ¨ _{1}$ in $B^{0} \to J / I ¨ K_{S}^{0}$ decays

Measurement of branching-fraction ratios and $C P$ asymmetries in $B^{\pm} \to D_{C P \pm} K^{\pm}$ decays at Belle and Belle II

A search for feebly-interacting particles in $B$ decays with missing energy at Belle

Measurement of time-dependent $C P$ violation parameters in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays at Belle and Belle II

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for $B \to I ¨ I^^{3}$ decays using Belle and Belle II data

Measurement of the energy dependence of the $e^{+} e^{-} \to B B ˉ$ , $B B ˉ^{}$ , and $B^{} B ˉ^{*}$ cross sections at Belle~II

Observation of time-dependent $C P$ violation and measurement of the branching fraction of $B^{0} \to J / I ¨ I ¨ ^{0}$ decays

Improved measurement of Born cross sections for $I ¨ _{b J} I ¨ $ and $I ¨ _{b J} (I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})_{non - I ¨ }$ ( $J$ = 0, 1, 2) at Belle and Belle II

Search for $I^^{0} p$ , $I^c ◯^{-} p$ , and $I^c ◯^{-} n$ dibaryons in $I^¥ (1 S)$ and $I^¥ (2 S)$ decays at Belle

Test of lepton flavor universality with measurements of $R (D^{+})$ and $R (D^{*+})$ using semileptonic $B$ tagging at the Belle II experiment

Determination of $∣ V_{c b} ∣$ using $B^{0} \to D^{*+} ℓ^{-} I^ˉ ½_{ℓ}$ decays with Belle II

Measurement of $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays at Belle II

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

Measurement of $C P$ asymmetries in $B^{0} \to K_{S}^{0} K_{S}^{0} K_{S}^{0}$ decays at Belle II

Measurement of the Branching Fraction of $I^_{c}^{+} \to p K_{S}^{0} I ¨ ^{0}$ at Belle

Determination of $∣ V_{u b} ∣$ from simultaneous measurements of untagged $B^{0} \to I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ and $B^{+} \to I ¨ ^{0} ℓ^{+} I^½_{ℓ}$ decays

First search for $B \to X_{s} I^½ I^ˉ ½$ decays

Observation of $e^{+} e^{-} \to I^\cdot I^¥ (2 S)$ and search for $e^{+} e^{-} \to I^\cdot I^¥ (1 S), I^^{3} X_{b}$ at $s$ near 10.75 GeV

First measurement of the masses of the $I^¥_{1} (1 D)$ and $I^¥_{3} (1 D)$ states and the energy dependence of the cross sections for $e^{+} e^{-} \to I^¥_{J} (1 D) I^\cdot$ and $e^{+} e^{-} \to I^¥_{J} (1 D) I ¨ ^{+} I ¨ ^{-}$

Search for the $e^{+} e^{-} \to I^\cdot_{b} (1 S) I ¨ $ and $e^{+} e^{-} \to I ¨ _{b 0} (1 P) I ¨ $ processes at $s = 10.745 GeV$

Search for the decay $B^{+} \to K^{+} τ^{+} τ^{-}$ using data from the Belle and Belle II experiments

Determination of the CKM angle $I ¨ _{3}$ from a combination of Belle and Belle II results

Search for an Axion-Like Particle in $B \to K^{(*)} a (\to I^^{3} I^^{3})$ Decays at Belle

Measurement of $C P$ asymmetries in $B^{0} \to I^\cdot^{'} K_{s}^{0}$ decays at Belle II

First Measurement of $R (X_{I ¨ / ℓ})$ as an Inclusive Test of the $b \to c I ¨ I^½$ Anomaly

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

Search for lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ with hadronic $B$ -tagging at Belle and Belle II

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

Evidence for $B^{+} \to K^{+} I^½ I^ˉ ½$ decays

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

Measurement of the branching fractions of $B ˉ \to D^{()} K^{-} K_{(S)}^{() 0}$ and $B ˉ \to D^{(*)} D_{s}^{-}$ decays at Belle II

Search for a $I^¼^{+} I^¼^{-}$ resonance in four-muon final states at Belle II

Measurement of the $D^{0} \to K^{-} I ¨ ^{+} e^{+} e^{-}$ branching fraction and search for $D^{0} \to I ¨ ^{+} I ¨ ^{-} e^{+} e^{-}$ and $D^{0} \to K^{+} K^{-} e^{+} e^{-}$ decays at Belle

Search for the baryon number and lepton number violating decays $I ¨ ^{-} \to I^ I ¨ ^{-}$ and $I ¨ ^{-} \to I^ˉ I ¨ ^{-}$ at Belle II

Study of $I^¥ (10753)$ decays to $I ¨ ^{+} I ¨ ^{-} I^¥ (n S)$ final states at Belle II

Search for lepton-flavor-violating $I ¨ ^{-} \to ℓ^{-} K_{s}^{0}$ decays at Belle and Belle II

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^_{c}^{-}$ and $B^{0} \to I^£_{c} (2455)^{0} I^_{c}^{0}$

Measurement of $C P$ asymmetries in $B^{0} \to I ¨ K_{S}^{0}$ decays with Belle II

Measurement of the branching fraction and $CP$ -violating asymmetry of the decay $B^{0} \to I ¨ ^{0} I ¨ ^{0}$ using $387$ million bottom-antibottom meson pairs in Belle II data

Measurement of the branching fraction of the decay $B^{-} \to D^{0} I ¨ (770)^{-}$ at Belle II

Search for Rare $b \to d ℓ^{+} ℓ^{-}$ Transitions at Belle

Measurement of the inclusive branching fractions for $B_{s}^{0}$ decays into $D$ mesons via hadronic tagging

Study of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I^¥ (1 D)$ at Belle II

Measurement of the $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ cross section in the energy range 0.62-3.50 GeV at Belle II

Observation of the decays $B^{+} \to I^£_{c} (2455)^{++} I^ˉ _{c}^{' -}$ and $B^{0} \to I^£_{c} (2455)^{0} I^ˉ _{c}^{'0}$

Test of light-lepton universality in $I ¨ $ decays with the Belle II experiment