M. Ritter

activity

20012023

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 9k across the 235 of their papers we have counts for

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26 papers · 1 filter

hep-ex2020★ 3 cited

Search for the dark photon in $B^{0} \to A^{'} A^{'}$ , $A^{'} \to e^{+} e^{-}$ , $μ^{+} μ^{-}$ , and $π^{+} π^{-}$ decays at Belle

S. -H. Park, Y. -J. Kwon, I. Adachi +216

We present a search for the dark photon $A^{'}$ in the $B^{0} \to A^{'} A^{'}$ decays, where $A^{'}$ subsequently decays to $e^{+} e^{-}$ , $μ^{+} μ^{-}$ , and $π^{+} π^{-}$ . T…

hep-ex2020★ 6 cited

Measurement of time-dependent CP violation parameters in $B^{0} \to K_{0}^{S} K_{0}^{S} K_{0}^{S}$ decays at Belle

Belle Collaboration, K. H. Kang, H. Park +202

We measure the time-dependent $C P$ violation parameters in $B^{0} \to K_{S}^{0} K_{S}^{0} K_{S}^{0}$ decays using $772 \times 1 0^{6}$ $B {\mkern 1.5mu\overline{\mkern-1.5mu B \mkern-…

hep-ex2020★ 21 cited

Study of Electromagnetic Decays of Orbitally Excited $Ξ_{c}$ Baryons

Belle Collaboration, J. Yelton, I. Adachi +206

Using 980 $f b^{-} 1$ of data collected with the Belle detector operating at the KEKB asymmetric-energy e^+e^- collider, we report a study of the electromagnetic decays of excited {cha…

hep-ex2020★ 13 cited

Search for lepton-number- and baryon-number-violating tau decays at Belle

D. Sahoo, G. B. Mohanty, K. Trabelsi +222

We search for lepton-number- and baryon-number-violating decays $τ^{-} \to p e^{+} e^{-}$ , $p e^{-} e^{-}$ , $p e^{+} μ^{-}$ , $p e^{-} μ^{+}$ , $\overline{p}μ^…

hep-ex2020

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

Belle II Collaboration, F. Abudinén, I. Adachi +544

We report on first measurements of branching fractions~( $B$ ) and CP-violating charge asymmetries~( $A$ ) in charmless $B$ decays at Belle~II. We use a sample of e…

hep-ex2020

Measurement of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} ν_{ℓ}$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb $^{- 1}$ of Belle II data

Belle II Collaboration, F. Abudinen, I. Adachi +540

We present a first measurement of the $B^{0} ˉ \to D^{*+} ℓ^{-} ν_{ℓ}$ branching fraction using fully reconstructed $B$ meson decays employing the Full Event Inte…

hep-ex2020

Measurement of Hadronic Mass Moments $⟨ M_{X}^{n} ⟩$ in $B \to X_{c} ℓ ν$ Decays at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +540

We present measurements of the first six hadronic mass moments in semileptonic $B \to X_{c} ℓ ν$ decays. The hadronic mass moments, together with other observables of incl…

cs.CY2020

User documentation and training at Belle II

Sam Cunliffe, Ilya Komarov, Thomas Kuhr +2

Belle II is a rapidly growing collaboration with members from one hundred and nineteen institutes spread around the globe. The software development team of the experiment, as well…

physics.comp-ph2020

HL-LHC Computing Review: Common Tools and Community Software

HEP Software Foundation, :, Thea Aarrestad +107

Common and community software packages, such as ROOT, Geant4 and event generators have been a key part of the LHC's success so far and continued development and optimisation will b…

hep-ex2020

Exclusive $B^{0} \to π^{-} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb $^{- 1}$ of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi +541

We present the results of the re-discovery of the decay $B^{0} \to π^{-} ℓ^{+} ν_{ℓ}$ in 34.6 fb $^{- 1}$ of Belle II data using hadronic $B$ -tagging via the Full Event Interpretation…

hep-ex2020★ 2 cited

Studies of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ}$ and $B^{-} \to D^{0} ℓ^{-} ν ˉ_{ℓ}$ decay processes with 34.6 fb $^{- 1}$ of Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +542

We report measurements of the $B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{l}$ and $B^{-} \to D^{0} ℓ^{-} ν ˉ_{l}$ processes using 34.6 fb $^{- 1}$ of collision events recorded by the Belle…

hep-ex2020★ 2 cited

A calibration of the Belle II hadronic tag-side reconstruction algorithm with $B \to X ℓ ν$ decays

Belle II Collaboration, F. Abudinén, I. Adachi +540

Tag-side reconstruction is an important method for reconstructing $B$ meson decays with missing energy. The Belle II tag-side reconstruction algorithm, Full Event Interpretation, r…

hep-ex2020★ 6 cited

Measurement of two-particle correlations in hadronic $e^{+} e^{-}$ collisions at Belle

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

The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon wide…

hep-ex2020★ 2 cited

Rediscovery of $B \to ϕ K^{()}$ decays and measurement of the longitudinal polarization fraction $f_{L}$ in $B \to ϕ K^{}$ decays using the Summer 2020 Belle II dataset

F. Abudinén, I. Adachi, R. Adak +538

We utilize a sample of 34.6 fb $^{- 1}$ , collected by the Belle II experiment at the SuperKEKB asymmetric energy $e^{+} e^{-}$ collider, to search for the $B^{+} \to ϕ K^{+}$ , $B^+ \to ϕK^{*+}…

hep-ex2020★ 1 cited

First flavor tagging calibration using 2019 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +540

We report on the first calibration of the standard Belle II $B$ -flavor tagger using the full data set collected at the $Υ (4 S)$ resonance in 2019 with the Belle II detector at…

hep-ex2020★ 8 cited

Search for a doubly-charged $D D K$ bound state in $Υ (1 S, 2 S)$ inclusive decays and via direct production in $e^{+} e^{-}$ collisions at $s$ = 10.520, 10.580, and 10.867 GeV

Belle Collaboration, Y. Li, S. Jia +205

We report the results of a first search for a doubly-charged $D D K$ bound state, denoted the $R^{++}$ , in $Υ (1 S)$ and $Υ (2 S)$ inclusive decays and via direct production in $e^{+} e^{-}$ …

hep-ex2020★ 28 cited

First Determination of the Spin and Parity of a Charmed-Strange Baryon, $Ξ_{c} (2970)^{+}$

Belle Collaboration, T. J. Moon, K. Tanida +202

We report results from a study of the spin and parity of $Ξ_{c} (2970)^{+}$ using a $980 f b^{- 1}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e…

hep-ex2020★ 99 cited

Search for Axion-Like Particles produced in $e^{+} e^{-}$ collisions at Belle II

Belle II collaboration, F. Abudinen, I. Adachi +334

We present a search for the direct production of a light pseudoscalar $a$ decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process…

hep-ex2020★ 21 cited

Evidence for $X (3872) \to J / ψ π^{+} π^{-}$ produced in single-tag two-photon interactions

Belle Collaboration, Y. Teramoto, S. Uehara +207

We report the first evidence for $X (3872)$ production in two-photon interactions by tagging either the electron or the position in the final state, exploring the highly virtual pho…

hep-ex2020

Charmless $B$ decay reconstruction in 2019 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +533

We report on the reconstruction of various charmless $B$ decays from electron-positron collisions at the energy corresponding to the $Υ (4 S)$ resonance collected with the Belle II d…

hep-ex2020★ 1 cited

Measurement of the $B^{0}$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Belle II Collaboration, F. Abudinén, I. Adachi +534

This document presents the measurement of $B^{0}$ meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of $8.7 \pm 0.2$ fb $^{- 1}$ . Each candid…

hep-ex2020

Measurement of the branching fraction $B (B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ})$ with early Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +533

We measure the branching fractions for the decays $B ˉ^{0} \to D^{*+} e^{-} ν ˉ_{e}$ and $B ˉ^{0} \to D^{*+} μ^{-} ν ˉ_{μ}$ using $8.70 \pm 0.09 fb^{- 1}$ of data collecte…

hep-ex2020★ 5 cited

Search for $B^{0}$ Decays to Invisible Final States ( $+ γ$ ) at Belle

Belle Collaboration, Y. Ku, P. Chang +153

We report searches for $B^{0} \to invisible$ and $B^{0} \to invisible + γ$ decays, where the energy of the photon is required to be larger than 0.5 GeV. These results are obtained…

hep-ex2020★ 5 cited

First search for the $η_{c 2} (1 D)$ in $B$ decays at Belle

Belle Collaboration, K. Chilikin, I. Adachi +194

The first dedicated search for the $η_{c 2} (1 D)$ is carried out using the decays $B^{+} \to η_{c 2} (1 D) K^{+}$ , $B^{0} \to η_{c 2} (1 D) K_{S}^{0}$ , $B^0 \rightarrow η_{c2}(1D) π^…

Search for the dark photon in B0→A′A′, A′→e+e−, μ+μ−, and π+π− decays at Belle

Measurement of time-dependent CP violation parameters in B0→K0S​K0S​K0S​ decays at Belle

Study of Electromagnetic Decays of Orbitally Excited Ξc​ Baryons

Search for lepton-number- and baryon-number-violating tau decays at Belle

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

Measurement of the semileptonic Bˉ0→D∗+ℓ−νℓ​ branching fraction with fully reconstructed B meson decays and 34.6 fb−1of Belle II data

Measurement of Hadronic Mass Moments ⟨MXn​⟩ in B→Xc​ℓν Decays at Belle II

User documentation and training at Belle II

HL-LHC Computing Review: Common Tools and Community Software

Exclusive B0→π−ℓ+νℓ​ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb−1 of Belle II Data

Studies of the semileptonic Bˉ0→D∗+ℓ−νˉℓ​ and B−→D0ℓ−νˉℓ​ decay processes with 34.6 fb−1 of Belle II data

A calibration of the Belle II hadronic tag-side reconstruction algorithm with B→Xℓν decays

Measurement of two-particle correlations in hadronic e+e− collisions at Belle

Rediscovery of B→ϕK(∗) decays and measurement of the longitudinal polarization fraction fL​ in B→ϕK∗ decays using the Summer 2020 Belle II dataset

First flavor tagging calibration using 2019 Belle II data

Search for a doubly-charged DDK bound state in Υ(1S,2S) inclusive decays and via direct production in e+e− collisions at s​ = 10.520, 10.580, and 10.867 GeV

First Determination of the Spin and Parity of a Charmed-Strange Baryon, Ξc​(2970)+

Search for Axion-Like Particles produced in e+e− collisions at Belle II

Evidence for X(3872)→J/ψπ+π− produced in single-tag two-photon interactions

Charmless B decay reconstruction in 2019 Belle II data

Measurement of the B0 lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Measurement of the branching fraction B(Bˉ0→D∗+ℓ−νˉℓ​) with early Belle II data

Search for B0 Decays to Invisible Final States (+γ) at Belle

First search for the ηc2​(1D) in B decays at Belle

Search for the dark photon in $B^{0} \to A^{'} A^{'}$ , $A^{'} \to e^{+} e^{-}$ , $μ^{+} μ^{-}$ , and $π^{+} π^{-}$ decays at Belle

Measurement of time-dependent CP violation parameters in $B^{0} \to K_{0}^{S} K_{0}^{S} K_{0}^{S}$ decays at Belle

Study of Electromagnetic Decays of Orbitally Excited $Ξ_{c}$ Baryons

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

Measurement of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} ν_{ℓ}$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb $^{- 1}$ of Belle II data

Measurement of Hadronic Mass Moments $⟨ M_{X}^{n} ⟩$ in $B \to X_{c} ℓ ν$ Decays at Belle II

Exclusive $B^{0} \to π^{-} ℓ^{+} ν_{ℓ}$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb $^{- 1}$ of Belle II Data

Studies of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ}$ and $B^{-} \to D^{0} ℓ^{-} ν ˉ_{ℓ}$ decay processes with 34.6 fb $^{- 1}$ of Belle II data

A calibration of the Belle II hadronic tag-side reconstruction algorithm with $B \to X ℓ ν$ decays

Measurement of two-particle correlations in hadronic $e^{+} e^{-}$ collisions at Belle

Rediscovery of $B \to ϕ K^{()}$ decays and measurement of the longitudinal polarization fraction $f_{L}$ in $B \to ϕ K^{}$ decays using the Summer 2020 Belle II dataset

Search for a doubly-charged $D D K$ bound state in $Υ (1 S, 2 S)$ inclusive decays and via direct production in $e^{+} e^{-}$ collisions at $s$ = 10.520, 10.580, and 10.867 GeV

First Determination of the Spin and Parity of a Charmed-Strange Baryon, $Ξ_{c} (2970)^{+}$

Search for Axion-Like Particles produced in $e^{+} e^{-}$ collisions at Belle II

Evidence for $X (3872) \to J / ψ π^{+} π^{-}$ produced in single-tag two-photon interactions

Charmless $B$ decay reconstruction in 2019 Belle II data

Measurement of the $B^{0}$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Measurement of the branching fraction $B (B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ})$ with early Belle II data

Search for $B^{0}$ Decays to Invisible Final States ( $+ γ$ ) at Belle

First search for the $η_{c 2} (1 D)$ in $B$ decays at Belle