A. Frey

activity

19952026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 7.5k across the 197 of their papers we have counts for

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Showing 2021 · hep-exShow all

23 papers · 2 filters

hep-ex2021★ 10 cited

Measurements of the branching fractions of $Ξ_{c}^{0} \to Λ K_{S}^{0}$ , $Ξ_{c}^{0} \to Σ^{0} K_{S}^{0}$ , and $Ξ_{c}^{0} \to Σ^{+} K^{-}$ decays at Belle

Belle collaboration, Y. Li, J. X. Cui +213

Using the entire data sample of $980 fb^{- 1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present measurements of the branching f…

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

Measurements of the branching fractions for $B \to K^{*} γ$ decays at Belle II

F. Abudinén, I. Adachi, R. Adak +565

This paper reports a study of $B \to K^{*} γ$ decays using $62.8 \pm 0.6$ fb $^{- 1}$ of data collected during 2019--2020 by the Belle II experiment at the SuperKEKB $e^{+} e^{-}$ asymm…

hep-ex2021

Angular analysis of $B^{+} \to ρ^{+} ρ^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on the first Belle II measurement of the branching fraction ( $B$ ) and longitudinal polarization fraction ( $f_{L}$ ) of $B^{+} \to ρ^{+} ρ^{0}$ decays. We reconstruct $B^+\…

hep-ex2021

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on measurements of branching fractions ( $B$ ) and CP-violating charge asymmetries ( $A_{CP}$ ) of multibody charmless $B$ decays reconstructed by the…

hep-ex2021

Study of $e^{+} e^{-} \to Υ (1S, 2S) η$ and $e^{+} e^{-} \to Υ (1S) η^{'}$ at $s = 10.866$ GeV with the Belle detector

Belle Collaboration, E. Kovalenko, A. Garmash +179

We report the first observation of the processes $e^{+} e^{-} \to Υ (1S, 2S) η$ at $s = 10.866$ ~GeV with a $10.2 σ$ and $16.5 σ$ significance respectively. The measured Born cross sec…

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★ 7 cited

Measurement of Differential Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} ν_{ℓ}$ Decays

Belle Collaboration, L. Cao, W. Sutcliffe +198

The first measurements of differential branching fractions of inclusive semileptonic $B \to X_{u} ℓ^{+} ν_{ℓ}$ decays are performed using the full Belle data set of 711 fb…

hep-ex2021

Measurement of the branching fraction for $B^{0} \to π^{0} π^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +551

We report the first reconstruction of the $B^{0} \to π^{0} π^{0}$ decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb $^{- 1}$ of integrated luminos…

hep-ex2021

Rediscovery of $B^{0} \to J / ψ K_{L}^{0}$ at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +545

We present preliminary results on the reconstruction of the $B^{0} \to J / ψ K_{L}^{0}$ decay, where $J / ψ \to μ^{+} μ^{-}$ or $e^+e…

hep-ex2021★ 1 cited

Measurements of branching fractions and direct CP asymmetries in $B^{0} \to K^{+} π^{-}$ , $B^{+} \to K_{S}^{0} π^{+}$ and $B^{0} \to π^{+} π^{-}$ using 2019 and 2020 data

Belle II Collaboration, F. Abudinén, I. Adachi +549

We report updated measurements of branching fractions ( $B$ ) and CP-violating charge asymmetries ( $A_{CP}$ ) for charmless $B$ decays at Belle II, which opera…

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-ex2021

Measurement of the time-integrated mixing probability $χ_{d}$ with a semileptonic double-tagging strategy and $34.6 fb^{- 1}$ of Belle II collision data

Belle II Collaboration, F. Abudinén, I. Adachi +550

We present the first measurement of the time-integrated mixing probability $χ_{d}$ using Belle II data collected at a center-of-mass (CM) energy of 10.58 GeV, corresponding to the ma…

hep-ex2021

Measurement of the branching fractions of $B \to η^{'} K$ decays using 2019/2020 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +545

This note describes the rediscovery of $B \to η^{'} K$ decays in Belle II data, both in the charged and neutral final state: $B_{0} \to η^{'} K_{S}$ and $B^{\pm} \to η^{'} K^{\pm}$ . The $η^{'}$ is searched…

hep-ex2021★ 1 cited

Measurements of branching fractions and direct $CP$ -violating asymmetries in $B^+ \to K^+ π^0~\mbox{and}~π^+ π^0$ decays using 2019 and 2020 Belle II data

F. Abudinén, I. Adachi, R. Adak +549

We report measurements of branching fractions ( $B$ ) and direct $CP$ -violating asymmetries ( $A_{CP}$ ) for the decays $B^{+} \to K^{+} π^{0}$ and $B^{+} \to π^{+} π^{0}$ …

hep-ex2021★ 3 cited

First search for direct $C P$ -violating asymmetry in $B^{0} \to K^{0} π^{0}$ decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +551

We report on the first measurement of the direct $C P$ -violating asymmetry ( $A$ ) in the charmless decay $B^{0} \to K^{0} π^{0}$ at Belle II and an updated measurement of its bran…

hep-ex2021★ 28 cited

The study of $γ γ \to γ ψ (2 S)$ at Belle

X. L. Wang, B. S. Gao, W. J. Zhu +200

Using $980 f b^{- 1}$ of data on and around the $Υ (n S) (n = 1, 2, 3, 4, 5)$ resonances collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, the two-photon…

hep-ex2021★ 3 cited

Study of $B \to D^{(*)} h$ decays using $62.8 fb^{- 1}$ of Belle II data

Belle II Collaboration, F. Abudinen, I. Adachi +549

We report measurements related to hadronic $B$ decays to final states that contain charm mesons. The analyses are performed on a $62.8 fb^{- 1}$ data set collected by the B…

hep-ex2021★ 5 cited

Measurement of the branching fractions of the $B^{+} \to η ℓ^{+} ν_{ℓ}$ and $B^{+} \to η^{'} ℓ^{+} ν_{ℓ}$ decays with signal-side only reconstruction in the full $q^{2}$ range

Belle Collaboration, U. Gebauer, C. Beleño +210

The branching fractions of the decays $B^{+} \to η ℓ^{+} ν_{ℓ}$ and $B^{+} \to η^{'} ℓ^{+} ν_{ℓ}$ are measured, where $ℓ$ is either an electron or a muon, using…

hep-ex2021★ 60 cited

Search for $B^{+} \to K^{+} ν ν ˉ$ decays using an inclusive tagging method at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +377

A search for the flavor-changing neutral-current decay $B^{+} \to K^{+} ν ν ˉ$ is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider.…

hep-ex2021★ 74 cited

Search for lepton-flavor-violating tau-lepton decays to $ℓ γ$ at Belle

K. Uno, K. Hayasaka, K. Inami +178

Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays $τ^{\pm}\rightarrow\…

hep-ex2021★ 32 cited

Measurements of Partial Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Tagging

Belle Collaboration, L. Cao, W. Sutcliffe +236

We present measurements of partial branching fractions of inclusive semileptonic $B \to X_{u} ℓ^{+} ν_{ℓ}$ decays using the full Belle data set of 711 fb $^{- 1}$ of integrate…

Measurements of the branching fractions of Ξc0​→ΛKS0​, Ξc0​→Σ0KS0​, and Ξc0​→Σ+K− decays at Belle

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

Measurements of the branching fractions for B→K∗γ decays at Belle II

Angular analysis of B+→ρ+ρ0 decays reconstructed in 2019-2020 Belle II data

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless B decays reconstructed in 2019-2020 Belle II data

Study of e+e−→Υ(1S,2S)η and e+e−→Υ(1S)η′ at s​=10.866 GeV with the Belle detector

Study of χbJ​(nP)→ωΥ(1S) at Belle

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

Measurement of Differential Branching Fractions of Inclusive B→Xu​ℓ+νℓ​ Decays

Measurement of the branching fraction for B0→π0π0 decays reconstructed in 2019-2020 Belle II data

Rediscovery of B0→J/ψKL0​ at Belle II

Measurements of branching fractions and direct CP asymmetries in B0→K+π−, B+→KS0​π+ and B0→π+π− using 2019 and 2020 data

Search for the Decay Bs0​→η′η

Measurement of the time-integrated mixing probability χd​ with a semileptonic double-tagging strategy and 34.6fb−1 of Belle II collision data

Measurement of the branching fractions of B→η′K decays using 2019/2020 Belle II data

Measurements of branching fractions and direct CP-violating asymmetries in $B^+ \to K^+ π^0~\mbox{and}~π^+ π^0$ decays using 2019 and 2020 Belle II data

First search for direct CP-violating asymmetry in B0→K0π0 decays at Belle II

The study of γγ→γψ(2S) at Belle

Study of B→D(∗)h decays using 62.8 fb−1 of Belle II data

Measurement of the branching fractions of the B+→ηℓ+νℓ​ and B+→η′ℓ+νℓ​ decays with signal-side only reconstruction in the full q2 range

Search for B+→K+ννˉ decays using an inclusive tagging method at Belle II

Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle

Measurements of Partial Branching Fractions of Inclusive B→Xu​ℓ+νℓ​ Decays with Hadronic Tagging

Measurements of the branching fractions of $Ξ_{c}^{0} \to Λ K_{S}^{0}$ , $Ξ_{c}^{0} \to Σ^{0} K_{S}^{0}$ , and $Ξ_{c}^{0} \to Σ^{+} K^{-}$ decays at Belle

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

Measurements of the branching fractions for $B \to K^{*} γ$ decays at Belle II

Angular analysis of $B^{+} \to ρ^{+} ρ^{0}$ decays reconstructed in 2019-2020 Belle II data

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data

Study of $e^{+} e^{-} \to Υ (1S, 2S) η$ and $e^{+} e^{-} \to Υ (1S) η^{'}$ at $s = 10.866$ GeV with the Belle detector

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

Measurement of Differential Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} ν_{ℓ}$ Decays

Measurement of the branching fraction for $B^{0} \to π^{0} π^{0}$ decays reconstructed in 2019-2020 Belle II data

Rediscovery of $B^{0} \to J / ψ K_{L}^{0}$ at Belle II

Measurements of branching fractions and direct CP asymmetries in $B^{0} \to K^{+} π^{-}$ , $B^{+} \to K_{S}^{0} π^{+}$ and $B^{0} \to π^{+} π^{-}$ using 2019 and 2020 data

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

Measurement of the time-integrated mixing probability $χ_{d}$ with a semileptonic double-tagging strategy and $34.6 fb^{- 1}$ of Belle II collision data

Measurement of the branching fractions of $B \to η^{'} K$ decays using 2019/2020 Belle II data

Measurements of branching fractions and direct $CP$ -violating asymmetries in $B^+ \to K^+ π^0~\mbox{and}~π^+ π^0$ decays using 2019 and 2020 Belle II data

First search for direct $C P$ -violating asymmetry in $B^{0} \to K^{0} π^{0}$ decays at Belle II

The study of $γ γ \to γ ψ (2 S)$ at Belle

Study of $B \to D^{(*)} h$ decays using $62.8 fb^{- 1}$ of Belle II data

Measurement of the branching fractions of the $B^{+} \to η ℓ^{+} ν_{ℓ}$ and $B^{+} \to η^{'} ℓ^{+} ν_{ℓ}$ decays with signal-side only reconstruction in the full $q^{2}$ range

Search for $B^{+} \to K^{+} ν ν ˉ$ decays using an inclusive tagging method at Belle II

Search for lepton-flavor-violating tau-lepton decays to $ℓ γ$ at Belle

Measurements of Partial Branching Fractions of Inclusive $B \to X_{u} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Tagging