S. Vahsen

activity

19992026

e^{+} e^{-} \to π^{+} π^{-} J / ψ

and Observation of a Charged Charmonium-like State at Belle

739 citations · 8.2k across the 254 of their papers we have counts for

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25 papers · 1 filter

physics.ins-det2020★ 5 cited

Observables for Recoil Identification in High-Definition Gas Time Projection Chambers

Majd Ghrear, Sven E. Vahsen, Cosmin Deaconu

Directional detection of nuclear recoils is broadly desirable in nuclear and particle physics. At low recoil energies, this capability may be used to confirm the cosmological origi…

physics.ins-det2020★ 8 cited

A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB

Miroslav Gabriel, Frank Simon, Hendrik Windel +13

We report on measurements of beam backgrounds during the first commissioning phase of the SuperKEKB collider in 2016, performed with the plastic scintillator and silicon photomulti…

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★ 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

Search for transitions from $Υ (4 S)$ and $Υ (5 S)$ to $η_{b} (1 S)$ and $η_{b} (2 S)$ with emission of an $ω$ meson

Belle Collaboration, P. Oskin, R. Mizuk +195

Using data collected in the Belle experiment at the KEKB asymmetric-energy $e^{+} e^{-}$ collider we search for transitions $Υ (4 S) \to η_{b} (1 S) ω$ , $Υ (5 S) \to η_{b} (1 S) ω$ an…

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…

hep-ex2020★ 21 cited

Measurement of Branching Fractions of $Λ_{c}^{+} \to η Λ π^{+}$ , $η Σ^{0} π^{+}$ , $Λ (1670) π^{+}$ , and $η Σ (1385)^{+}$

J. Y. Lee, K. Tanida, Y. Kato +200

We report branching fraction measurements of four decay modes of the $Λ_{c}^{+}$ baryon, each of which includes an $η$ meson and a $Λ$ baryon in the final state, and all of which a…

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 $e^{+} e^{-}$ …

physics.ins-det2020★ 53 cited

CYGNUS: Feasibility of a nuclear recoil observatory with directional sensitivity to dark matter and neutrinos

S. E. Vahsen, C. A. J. O'Hare, W. A. Lynch +16

Now that conventional weakly interacting massive particle (WIMP) dark matter searches are approaching the neutrino floor, there has been a resurgence of interest in detectors with…

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

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★ 14 cited

Measurement of the Branching Fraction of the Decay $B^{+} \to π^{+} π^{-} ℓ^{+} ν_{ℓ}$ in Fully Reconstructed Events at Belle

The Belle Collaboration, C. Beleño, A. Frey +160

We present an analysis of the exclusive $B^{+} \to π^{+} π^{-} ℓ^{+} ν_{ℓ}$ decay, where $ℓ$ represents an electron or a muon, with the assumption of charge-conjugation symmetr…

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…

Observables for Recoil Identification in High-Definition Gas Time Projection Chambers

A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB

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

Study of Electromagnetic Decays of Orbitally Excited Ξc​ Baryons

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

Search for transitions from Υ(4S) and Υ(5S) to ηb​(1S) and ηb​(2S) with emission of an ω meson

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

Measurement of Branching Fractions of Λc+​→ηΛπ+, ηΣ0π+, Λ(1670)π+, and ηΣ(1385)+

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

CYGNUS: Feasibility of a nuclear recoil observatory with directional sensitivity to dark matter and neutrinos

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

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 of the Decay B+→π+π−ℓ+νℓ​ in Fully Reconstructed Events at Belle

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

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

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

Search for transitions from $Υ (4 S)$ and $Υ (5 S)$ to $η_{b} (1 S)$ and $η_{b} (2 S)$ with emission of an $ω$ meson

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

Measurement of Branching Fractions of $Λ_{c}^{+} \to η Λ π^{+}$ , $η Σ^{0} π^{+}$ , $Λ (1670) π^{+}$ , and $η Σ (1385)^{+}$

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

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 of the Decay $B^{+} \to π^{+} π^{-} ℓ^{+} ν_{ℓ}$ in Fully Reconstructed Events at Belle

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