F. Weidner

activity

20192026

most citedMeasurement of proton electromagnetic form factors in

e^{+} e^{-} \to p p ˉ

in the energy region 2.00-3.08 GeV

96 citations · 531 across the 64 of their papers we have counts for

collaborators

Showing 2025Show all

26 papers · 1 filter

hep-ex2025

Measurements of the Absolute Branching Fraction of the Semileptonic Decay $Ξ^{-} \to Λ e^{-} ν ˉ_{e}$ and the Axial Charge of the $Ξ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +685

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we study the semileptonic decay $Ξ^{-} \to Λ e^{-} ν ˉ_{e}$ for the first time at an electron-…

hep-ex2025

Search for the decays $X (3872) \to K_{S}^{0} K^{\pm} π^{\mp}$ and $K^{*} (892) K ˉ$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +685

Using a 10.9 fb $^{- 1}$ data sample collected by the BESIII detector at center-of-mass energies from 4.16 to 4.34 GeV, we search for the charmless decays $X(3872) \to K_{S}^{0}K^{\p…

hep-ex2025

First measurement of the absolute branching fractions of $Σ^{+}$ nonleptonic decays and test of the $Δ I = 1/2$ rule

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected by the BESIII detector at the center-of-mass energy $s = 3.097$ GeV, the first absolute measurement of the branc…

hep-ex2025

Experimental study of the reaction $Ξ^{0} n \to ΛΛ X$ using $Ξ^{0}$ -nucleus scattering

BESIII Collaboration, M. Ablikim, M. N. Achasov +703

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector operating at the BEPCII storage ring in $2009$ , $2012$ , $2018$ , and $2019$ , we perform a search for…

hep-ex2025

Search for the lepton number violating process $Ξ^{-} \to Σ^{+} e^{-} e^{-} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +691

We present a search for the lepton number violating decay $Ξ^{-} \to Σ^{+} e^{-} e^{-} + c . c .$ with $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected by the BESIII detector at the BEPCII…

hep-ex2025★ 1 cited

Search for the charmonium weak decay $J / ψ \to D ˉ^{0} K ˉ^{* 0} + c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +699

Based on a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected at the center-of-mass energy $s$ = 3.0969 GeV with the BESIII detector, we search for the charmonium rar…

hep-ex2025

Measurements of absolute branching fractions of $D^{0 (+)} \to K K K π$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +697

Using an $e^{+} e^{-}$ sample of $20.3 f b^{- 1}$ collected at the center-of-mass energy $s =$ 3.773 GeV with the BESIII detector, we report measurements of several four-body h…

hep-ex2025★ 1 cited

Study of the Magnetic Dipole Transition of $J / ψ \to γ η_{c}$ via $η_{c} \to p p ˉ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +692

Using $(10.087 \pm 0.044) \times 1 0^{9}$ $J / ψ$ events collected with the BESIII detector at the $e^{+} e^{-}$ BEPCII collider, we present the first amplitude analysis of $J / ψ \to γ p p ˉ$ wit…

hep-ex2025

Search for the lepton number violating decay $η \to π^{+} π^{+} e^{-} e^{-} + c . c .$ via $J / ψ \to ϕ η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on a sample of $(10.087 \pm 0.044) \times 1 0^{9} J / ψ$ events collected by the BESIII detector at the BEPCII collider, we perform the first search for the lepton number violati…

hep-ex2025★ 1 cited

Observation of a threshold enhancement in the $π^{+} π^{-}$ spectrum in $ψ (3686) \to π^{+} π^{-} J / ψ$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +677

Based on the $(2712.4 \pm 14.4) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector, we present a high-precision study of the $π^{+} π^{-}$ mass spectrum in $ψ(3686)\rightar…

hep-ex2025

Helicity amplitude and branching fraction measurement of $χ_{c J} \to Λ Λ ˉ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Utilizing $2712.4 \pm 14.3$ million $ψ (3686)$ events accumulated by the BESIII experiment, we perform a partial wave analysis of $ψ (3686) \to γ χ_{c J} \to γ Λ Λ ˉ$ decay…

hep-ex2025

Search for CP violation in $e^{+} e^{-} \to ψ (3770) \to D^{0} D ˉ^{0}$ via $D - > K_{S}^{0} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +701

Utilizing data sample of electron-positron collisions recorded with the BESIII detector at the center of mass energy of 3.773 GeV, corresponding to an integrated luminosity of 20.2…

hep-ex2025★ 2 cited

Measurement of the Born cross section for $e^{+} e^{-} \to p K^{-} K^{-} Ξ ˉ^{+}$ at $s =$ 3.5-4.9 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +695

Using $e^{+} e^{-}$ collision data corresponding to a total integrated luminosity of 20 $fb^{- 1}$ collected with the BESIII detector at the BEPCII collider, we present a measurem…

hep-ex2025★ 1 cited

First observation of quantum correlations in $e^{+} e^{-} \to X D D ˉ$ and $C$ -even constrained $D D ˉ$ pairs

BESIII Collaboration, M. Ablikim, M. N. Achasov +698

The study of meson pairs produced with quantum correlations gives direct access to parameters that are challenging to measure in other systems. In this Letter, the existence of qua…

hep-ex2025

Search for sub-GeV invisible particles in inclusive decays of $J / ψ$ to $ϕ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +696

A search for an invisible particle, $X$ , with a mass between 0 and 0.96 $GeV / c^{2}$ , is performed in the process $J / ψ \to ϕ + X$ using $(8774.0\pm39.4)\times…

hep-ex2025

Search for a dark baryon in the $Ξ^{-} \to π^{-} + invisible$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

A search for a dark baryon is performed for the first time in the two-body decay $Ξ^{-} \to π^{-} + invisible$ using $(10.087 \pm 0.044) \times 1 0^{9}$ $J / ψ$ events collected at…

hep-ex2025

Observation of $χ_{c J} (J = 0, 1, 2) \to p p ˉ η η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +677

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII storage ring, the decays $χ_{c J} (J = 0, 1, 2) \to p p ˉ η η$ are obs…

hep-ex2025

Updated model-independent measurement of the strong-phase differences between $D^{0}$ and $D ˉ^{0} \to K_{S / L}^{0} π^{+} π^{-}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +688

The strong-phase differences between $D^{0} \to K_{S / L}^{0} π^{+} π^{-}$ and $D ˉ^{0} \to K_{S / L}^{0} π^{+} π^{-}$ decays are one of the most important inputs in measuring the $C P$ violating angle…

hep-ex2025★ 1 cited

Search for $J / ψ \to K_{S}^{0} K_{S}^{0}$ and $ψ (3686) \to K_{S}^{0} K_{S}^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +678

Using data samples of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events and $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, we sea…

hep-ex2025

Observation of the decay $ψ (3686) \to Σ^{0} Σ ˉ^{0} ω$

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Using a dataset of $(27.12 \pm 0.14) \times 1 0^{8}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay $…

hep-ex2025

Study of $ϕ \to K K ˉ$ and $K_{S}^{0} - K_{L}^{0}$ Asymmetry in the Amplitude Analysis of $D_{s}^{+} \to K_{S}^{0} K_{L}^{0} π^{+}$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +695

Using $e^{+} e^{-}$ annihilation data corresponding to a total integrated luminosity of 7.33 $f b^{- 1}$ collected at center-of-mass energies between 4.128 and 4.226~GeV with the BESI…

hep-ex2025

Precision measurement of the branching fraction for the decay $ψ (2 S) \to τ^{+} τ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +684

Using $(2259.3 \pm 11.1) \times 1 0^{6}$ $ψ (2 S)$ events acquired with the BESIII detector, the branching fraction of $ψ (2 S) \to τ^{+} τ^{-}$ is measured with improved precision t…

hep-ex2025

Improved measurement of absolute branching fraction of the inclusive decay $Λ_{c}^{+} \to K_{S}^{0} X$

BESIII Collaboration, M. Ablikim, M. N. Achasov +676

By analyzing $4.5$ fb $^{- 1}$ of $e^{+} e^{-}$ collision data accumulated with the BESIII detector at center-of-mass energies ranging from $4599.53$ MeV to $4698.82$ MeV, we report t…

hep-ex2025

Single Inclusive $π^{\pm}$ and $K^{\pm}$ Production in $e^{+} e^{-}$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +699

Using data samples with a total integrated luminosity of 253 $p b^{- 1}$ collected by the BESIII detector operating at the BEPCII collider, the differential cross-sections of inc…

Measurements of the Absolute Branching Fraction of the Semileptonic Decay Ξ−→Λe−νˉe​ and the Axial Charge of the Ξ−

Search for the decays X(3872)→KS0​K±π∓ and K∗(892)Kˉ at BESIII

First measurement of the absolute branching fractions of Σ+ nonleptonic decays and test of the ΔI=1/2 rule

Experimental study of the reaction Ξ0n→ΛΛX using Ξ0-nucleus scattering

Search for the lepton number violating process Ξ−→Σ+e−e−+c.c.

Search for the charmonium weak decay J/ψ→Dˉ0Kˉ∗0+c.c.

Measurements of absolute branching fractions of D0(+)→KKKπ decays

Study of the Magnetic Dipole Transition of J/ψ→γηc​ via ηc​→ppˉ​

Search for the lepton number violating decay η→π+π+e−e−+c.c. via J/ψ→ϕη

Observation of a threshold enhancement in the π+π− spectrum in ψ(3686)→π+π−J/ψ decays

Helicity amplitude and branching fraction measurement of χcJ​→ΛΛˉ

Search for CP violation in e+e−→ψ(3770)→D0Dˉ0 via D−>KS0​π0

Measurement of the Born cross section for e+e−→pK−K−Ξˉ+ at s​= 3.5-4.9 GeV

First observation of quantum correlations in e+e−→XDDˉ and C-even constrained DDˉ pairs

Search for sub-GeV invisible particles in inclusive decays of J/ψ to ϕ

Search for a dark baryon in the Ξ−→π−+invisible decay

Observation of χcJ​(J=0,1,2)→ppˉ​ηη

Updated model-independent measurement of the strong-phase differences between D0 and Dˉ0→KS/L0​π+π− decays

Search for J/ψ→KS0​KS0​ and ψ(3686)→KS0​KS0​

Observation of the decay ψ(3686)→Σ0Σˉ0ω

Study of ϕ→KKˉ and KS0​−KL0​ Asymmetry in the Amplitude Analysis of Ds+​→KS0​KL0​π+ Decays

Precision measurement of the branching fraction for the decay ψ(2S)→τ+τ−

Improved measurement of absolute branching fraction of the inclusive decay Λc+​→KS0​X

Single Inclusive π± and K± Production in e+e− Annihilation at center-of-mass Energies from 2.000 to 3.671GeV

Measurements of the Absolute Branching Fraction of the Semileptonic Decay $Ξ^{-} \to Λ e^{-} ν ˉ_{e}$ and the Axial Charge of the $Ξ^{-}$

Search for the decays $X (3872) \to K_{S}^{0} K^{\pm} π^{\mp}$ and $K^{*} (892) K ˉ$ at BESIII

First measurement of the absolute branching fractions of $Σ^{+}$ nonleptonic decays and test of the $Δ I = 1/2$ rule

Experimental study of the reaction $Ξ^{0} n \to ΛΛ X$ using $Ξ^{0}$ -nucleus scattering

Search for the lepton number violating process $Ξ^{-} \to Σ^{+} e^{-} e^{-} + c . c .$

Search for the charmonium weak decay $J / ψ \to D ˉ^{0} K ˉ^{* 0} + c.c.$

Measurements of absolute branching fractions of $D^{0 (+)} \to K K K π$ decays

Study of the Magnetic Dipole Transition of $J / ψ \to γ η_{c}$ via $η_{c} \to p p ˉ$

Search for the lepton number violating decay $η \to π^{+} π^{+} e^{-} e^{-} + c . c .$ via $J / ψ \to ϕ η$

Observation of a threshold enhancement in the $π^{+} π^{-}$ spectrum in $ψ (3686) \to π^{+} π^{-} J / ψ$ decays

Helicity amplitude and branching fraction measurement of $χ_{c J} \to Λ Λ ˉ$

Search for CP violation in $e^{+} e^{-} \to ψ (3770) \to D^{0} D ˉ^{0}$ via $D - > K_{S}^{0} π^{0}$

Measurement of the Born cross section for $e^{+} e^{-} \to p K^{-} K^{-} Ξ ˉ^{+}$ at $s =$ 3.5-4.9 GeV

First observation of quantum correlations in $e^{+} e^{-} \to X D D ˉ$ and $C$ -even constrained $D D ˉ$ pairs

Search for sub-GeV invisible particles in inclusive decays of $J / ψ$ to $ϕ$

Search for a dark baryon in the $Ξ^{-} \to π^{-} + invisible$ decay

Observation of $χ_{c J} (J = 0, 1, 2) \to p p ˉ η η$

Updated model-independent measurement of the strong-phase differences between $D^{0}$ and $D ˉ^{0} \to K_{S / L}^{0} π^{+} π^{-}$ decays

Search for $J / ψ \to K_{S}^{0} K_{S}^{0}$ and $ψ (3686) \to K_{S}^{0} K_{S}^{0}$

Observation of the decay $ψ (3686) \to Σ^{0} Σ ˉ^{0} ω$

Study of $ϕ \to K K ˉ$ and $K_{S}^{0} - K_{L}^{0}$ Asymmetry in the Amplitude Analysis of $D_{s}^{+} \to K_{S}^{0} K_{L}^{0} π^{+}$ Decays

Precision measurement of the branching fraction for the decay $ψ (2 S) \to τ^{+} τ^{-}$

Improved measurement of absolute branching fraction of the inclusive decay $Λ_{c}^{+} \to K_{S}^{0} X$

Single Inclusive $π^{\pm}$ and $K^{\pm}$ Production in $e^{+} e^{-}$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV