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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26 papers · 1 filter

hep-ex2022★ 9 cited

First observation of $B \to D ˉ_{1} (\to D ˉ π^{+} π^{-}) ℓ^{+} ν_{ℓ}$ and measurement of the $B \to D ˉ^{()} π ℓ^{+} ν_{ℓ}$ and $B \to D ˉ^{()} π^{+} π^{-} ℓ^{+} ν_{ℓ}$ branching fractions with hadronic tagging at Belle

Belle Collaboration, F. Meier, A. Vossen +202

We report measurements of the ratios of branching fractions for $B \to D ˉ^{(*)} π ℓ^{+} ν_{ℓ}$ and $B \to D ˉ^{(*)} π^{+} π^{-} ℓ^{+} ν_{ℓ}$ relative to $B \to \bar{D}^*\ell^+ν_\…

hep-ex2022★ 21 cited

Search for an invisible $Z^{'}$ in a final state with two muons and missing energy at Belle II

Belle II Collaboration, I. Adachi, K. Adamczyk +385

The $L_{μ} - L_{τ}$ extension of the standard model predicts the existence of a lepton-flavor-universality-violating $Z^{'}$ boson that couples only to the heavier lepton families.…

hep-ex2022★ 18 cited

First Observation of $Λ π^{+}$ and $Λ π^{-}$ Signals near the $K ˉ N (I = 1)$ Mass Threshold in $Λ_{c}^{+} \to Λ π^{+} π^{+} π^{-}$ Decay

Belle Collaboration, Y. Ma, J. Yelton +195

Using the data sample of 980 fb $^{- 1}$ collected with the Belle detector operating at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present the results of an investigation of th…

hep-ex2022

Measurement of branching fractions of $Λ_{c}^{+} \to p K_{S}^{0} K_{S}^{0}$ and $Λ_{c}^{+} \to p K_{S}^{0} η$ at Belle

Belle Collaboration, L. K. Li, K. Kinoshita +204

We present a study of a singly Cabibbo-suppressed decay $Λ_{c}^{+} \to p K_{S}^{0} K_{S}^{0}$ and a Cabibbo-favored decay $Λ_{c}^{+} \to p K_{S}^{0} η$ based on 980 $f b^{- 1}$ of data collected by the…

physics.ins-det2022

Report of the Topical Group on Micro-Pattern Gaseous Detectors for Snowmass 2021

B. Surrow, M. Titov, S. Vahsen +10

This report summarizes white papers on micro-pattern gaseous detectors (MPGDs) that were submitted to the Instrumentation Frontier Topical Group IF05, as part of the Snowmass 2021…

hep-ph2022★ 34 cited

Report of the Topical Group on Particle Dark Matter for Snowmass 2021

Jodi Cooley, Tongyan Lin, W. Hugh Lippincott +71

This report summarizes the findings of the CF1 Topical Subgroup to Snowmass 2021, which was focused on particle dark matter. One of the most important scientific goals of the next…

hep-ex2022★ 1 cited

Physics Opportunities in the ORNL Spallation Neutron Source Second Target Station Era

J. Asaadi, P. S. Barbeau, B. Bodur +26

The Oak Ridge National Laboratory (ORNL) Spallation Neutron Source (SNS) First Target Station (FTS), used by the COHERENT experiment, provides an intense and extremely high-quality…

hep-ex2022

Report of the Instrumentation Frontier Working Group for Snowmass 2021

Phillip S. Barbeau, Petra Merkel, Jinlong Zhang +42

Detector instrumentation is at the heart of scientific discoveries. Cutting edge technologies enable US particle physics to play a leading role worldwide. This report summarizes th…

hep-ex2022★ 9 cited

Evidence for the singly Cabibbo-suppressed decay $Ω_{c}^{0} \to Ξ^{-} π^{+}$ and search for $Ω_{c}^{0} \to Ξ^{-} K^{+}$ and $Ω^{-} K^{+}$ decays at Belle

Belle Collaboration, X. Han, S. Jia +170

Using a data sample of 980 fb $^{- 1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we study for the first time the singly Cabibbo-suppressed de…

hep-ex2022★ 24 cited

Observation of $e^{+} e^{-} \to ω χ_{b J} (1 P)$ and search for $X_{b} \to ω Υ (1 S)$ at $s$ near 10.75 GeV

Belle II collaboration, I. Adachi, L. Aggarwal +348

We study the processes $e^{+} e^{-} \to ω χ_{b J} (1 P)$ ( $J$ = 0, 1, or 2) using samples at center-of-mass energies $s$ = 10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, an…

hep-ex2022★ 8 cited

Measurements of branching fractions of $Λ_{c}^{+} \to Σ^{+} η$ and $Λ_{c}^{+} \to Σ^{+} η^{'}$ and asymmetry parameters of $Λ_{c}^{+} \to Σ^{+} π^{0}$ , $Λ_{c}^{+} \to Σ^{+} η$ , and $Λ_{c}^{+} \to Σ^{+} η^{'}$

Belle Collaboration, S. X. Li, C. P. Shen +168

We report a study of $Λ_{c}^{+} \to Σ^{+} π^{0}$ , $Λ_{c}^{+} \to Σ^{+} η$ , and $Λ_{c}^{+} \to Σ^{+} η^{'}$ using the data sample corresponding to an integrated luminosity of 980 $f b^{- 1}$ collected w…

hep-ex2022★ 12 cited

Measurement of the $Ω_{c}^{0}$ lifetime at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +353

We report on a measurement of the $Ω_{c}^{0}$ lifetime using $Ω_{c}^{0} \to Ω^{-} π^{+}$ decays reconstructed in $e^{+} e^{-} \to c c ˉ$ data collected by the Belle II experiment and corresponding…

hep-ex2022★ 19 cited

Search for a dark photon and an invisible dark Higgs boson in $μ^{+} μ^{-}$ and missing energy final states with the Belle II experiment

Belle II Collaboration, F. Abudinén, I. Adachi +357

The dark photon $A^{'}$ and the dark Higgs boson $h^{'}$ are hypothetical particles predicted in many dark sector models. We search for the simultaneous production of $A^\pri…

hep-ex2022★ 1 cited

Measurements of the branching fractions $B (B ˉ^{0} \to D^{+} π^{-})$ and $B (B ˉ^{0} \to D^{+} K^{-})$ and tests of QCD factorization

Belle Collaboration, J. F. Krohn, D. Ferlewicz +198

Using $(771.6 \pm 10.6) \times 1 0^{6}$ $B B ˉ$ meson pairs recorded by the Belle experiment at the KEKB $e^{+} e^{-}$ collider, we report the branching fractions $\mathcal{B}(\bar{B}^…

physics.ins-det2022★ 2 cited

Deep learning for improved keV-scale recoil identification in high resolution gas time projection chambers

J. Schueler, M. Ghrear, S. E. Vahsen +2

Recoil-imaging gaseous time projection chambers (TPCs) with directional sensitivity are attractive for dark matter (DM) searches. Detectors capable of reconstructing 3D nuclear rec…

hep-ex2022★ 9 cited

Measurement of the $Λ_{c}^{+}$ lifetime

Belle II Collaboration, F. Abudinén, L. Aggarwal +360

An absolute measurement of the $Λ_{c}^{+}$ lifetime is reported using $Λ_{c}^{+} \to p K^{-} π^{+}$ decays in events reconstructed from data collected by the Belle II experiment at the…

physics.acc-ph2022★ 13 cited

Snowmass 2021 White Paper on Upgrading SuperKEKB with a Polarized Electron Beam: Discovery Potential and Proposed Implementation

A. Accardi, D. M. Asner, H. Atmacan +105

Upgrading the SuperKEKB electron-positron collider with polarized electron beams opens a new program of precision physics at a center-of-mass energy of 10.58 GeV. This white paper…

hep-ex2022★ 4 cited

Snowmass2021 Cosmic Frontier Dark Matter Direct Detection to the Neutrino Fog

D. S. Akerib, P. B. Cushman, C. E. Dahl +24

We present a summary of future prospects for direct detection of dark matter within the GeV/c2 to TeV/c2 mass range. This is paired with a new definition of the neutrino fog in ord…

physics.ins-det2022

MPGDs for TPCs at future lepton colliders

Alain Bellerive, Jochen Kaminski, Peter M. Lewis +13

This submission will focus on advancements and advantages of Micro Pattern Gas Detector (MPGD) technologies and their applications to the construction of a dedicated Time Projectio…

physics.ins-det2022

A TPC-based tracking system for a future Belle II upgrade

Andreas Löschcke Centeno, Christian Wessel, Peter M. Lewis +4

In the next decade, intensity frontier experiments will require tracking systems that are robust against high event and background rates while maintaining excellent tracking perfor…

hep-ex2022

Search for $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ decays at Belle

Belle Collaboration, H. B. Jeon, K. H. Kang +219

We report the first search for the penguin-dominated process $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ using the full data sample of $772 \times 1 0^{6}$ $B B ˉ$ pairs collected with the Bell…

hep-ex2022★ 1 cited

Belle II Executive Summary

D. M. Asner, H. Atmacan, Sw. Banerjee +78

Belle II is a Super $B$ Factory experiment, expected to record 50 ab $^{- 1}$ of $e^{+} e^{-}$ collisions at the SuperKEKB accelerator until 2035. The large samples of $B$ mesons, charm h…

hep-ph2022★ 1 cited

A new Monte Carlo Generator for BSM physics in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays with an application to lepton non-universality in angular distributions

A. Sibidanov, T. E. Browder, S. Dubey +5

Within the widely used EvtGen framework, we have added a new event generator model for $B \to K^{*} ℓ^{+} ℓ^{-}$ with improved standard model (SM) decay amplitudes and possible BSM…

physics.ins-det2022★ 7 cited

Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model

C. A. J. O'Hare, D. Loomba, K. Altenmüller +164

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detecto…

First observation of B→Dˉ1​(→Dˉπ+π−)ℓ+νℓ​ and measurement of the B→Dˉ(∗)πℓ+νℓ​ and B→Dˉ(∗)π+π−ℓ+νℓ​ branching fractions with hadronic tagging at Belle

Search for an invisible Z′ in a final state with two muons and missing energy at Belle II

First Observation of Λπ+ and Λπ− Signals near the KˉN(I=1) Mass Threshold in Λc+​→Λπ+π+π− Decay

Measurement of branching fractions of Λc+​→pKS0​KS0​ and Λc+​→pKS0​η at Belle

Report of the Topical Group on Micro-Pattern Gaseous Detectors for Snowmass 2021

Report of the Topical Group on Particle Dark Matter for Snowmass 2021

Physics Opportunities in the ORNL Spallation Neutron Source Second Target Station Era

Report of the Instrumentation Frontier Working Group for Snowmass 2021

Evidence for the singly Cabibbo-suppressed decay Ωc0​→Ξ−π+ and search for Ωc0​→Ξ−K+ and Ω−K+ decays at Belle

Observation of e+e−→ωχbJ​(1P) and search for Xb​→ωΥ(1S) at s​ near 10.75 GeV

Measurements of branching fractions of Λc+​→Σ+η and Λc+​→Σ+η′ and asymmetry parameters of Λc+​→Σ+π0, Λc+​→Σ+η, and Λc+​→Σ+η′

Measurement of the Ωc0​ lifetime at Belle II

Search for a dark photon and an invisible dark Higgs boson in μ+μ− and missing energy final states with the Belle II experiment

Measurements of the branching fractions B(Bˉ0→D∗+π−) and B(Bˉ0→D∗+K−) and tests of QCD factorization

Deep learning for improved keV-scale recoil identification in high resolution gas time projection chambers

Measurement of the Λc+​ lifetime

Snowmass 2021 White Paper on Upgrading SuperKEKB with a Polarized Electron Beam: Discovery Potential and Proposed Implementation

Snowmass2021 Cosmic Frontier Dark Matter Direct Detection to the Neutrino Fog

MPGDs for TPCs at future lepton colliders

A TPC-based tracking system for a future Belle II upgrade

Search for B0→KS0​KS0​γ decays at Belle

Belle II Executive Summary

A new Monte Carlo Generator for BSM physics in B→K∗ℓ+ℓ− decays with an application to lepton non-universality in angular distributions

Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model

First observation of $B \to D ˉ_{1} (\to D ˉ π^{+} π^{-}) ℓ^{+} ν_{ℓ}$ and measurement of the $B \to D ˉ^{()} π ℓ^{+} ν_{ℓ}$ and $B \to D ˉ^{()} π^{+} π^{-} ℓ^{+} ν_{ℓ}$ branching fractions with hadronic tagging at Belle

Search for an invisible $Z^{'}$ in a final state with two muons and missing energy at Belle II

First Observation of $Λ π^{+}$ and $Λ π^{-}$ Signals near the $K ˉ N (I = 1)$ Mass Threshold in $Λ_{c}^{+} \to Λ π^{+} π^{+} π^{-}$ Decay

Measurement of branching fractions of $Λ_{c}^{+} \to p K_{S}^{0} K_{S}^{0}$ and $Λ_{c}^{+} \to p K_{S}^{0} η$ at Belle

Evidence for the singly Cabibbo-suppressed decay $Ω_{c}^{0} \to Ξ^{-} π^{+}$ and search for $Ω_{c}^{0} \to Ξ^{-} K^{+}$ and $Ω^{-} K^{+}$ decays at Belle

Observation of $e^{+} e^{-} \to ω χ_{b J} (1 P)$ and search for $X_{b} \to ω Υ (1 S)$ at $s$ near 10.75 GeV

Measurements of branching fractions of $Λ_{c}^{+} \to Σ^{+} η$ and $Λ_{c}^{+} \to Σ^{+} η^{'}$ and asymmetry parameters of $Λ_{c}^{+} \to Σ^{+} π^{0}$ , $Λ_{c}^{+} \to Σ^{+} η$ , and $Λ_{c}^{+} \to Σ^{+} η^{'}$

Measurement of the $Ω_{c}^{0}$ lifetime at Belle II

Search for a dark photon and an invisible dark Higgs boson in $μ^{+} μ^{-}$ and missing energy final states with the Belle II experiment

Measurements of the branching fractions $B (B ˉ^{0} \to D^{+} π^{-})$ and $B (B ˉ^{0} \to D^{+} K^{-})$ and tests of QCD factorization

Measurement of the $Λ_{c}^{+}$ lifetime

Search for $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ decays at Belle

A new Monte Carlo Generator for BSM physics in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays with an application to lepton non-universality in angular distributions