Weiwei Xu

activity

20232025

Σ^{+}

Timelike Electromagnetic Form Factors

15 citations · 52 across the 20 of their papers we have counts for

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9 papers · 1 filter

hep-ex2025★ 1 cited

Evidence for the semileptonic decays $Λ_{c}^{+} \to Σ^{\pm} π^{\mp} e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +680

Using $4.5 f b^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector at center-of-mass energies between $4.600$ and $4.699 G e V$ , we search for the semileptonic decays…

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

First measurement of the cross sections for $e^{+} e^{-} \to K^{0} K^{-} π^{+} J / ψ + c . c .$ at $s$ from 4.396 to 4.951 GeV

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

Using $e^{+} e^{-}$ collision data at 19 center-of-mass energies ranging from $4.396$ to $4.951 GeV$ corresponding to a total integrated luminosity of $8.86 fb^{- 1}$ coll…

hep-ex2025

First Measurement of the $D_{s}^{+} \to K^{0} μ^{+} ν_{μ}$ Decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +693

We report the first measurement of the semileptonic decay $D_{s}^{+} \to K^{0} μ^{+} ν_{μ}$ , using a sample of $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of $…

hep-ex2025

Observation of the electromagnetic radiative decays of the \boldmath{ $Λ (1520)$ } and \boldmath{ $Λ (1670)$ } to \boldmath{ $γ Σ^{0}$ }

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

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we report the first observation of the electromagnetic radiative decays of the $Λ (1520)$ and $Λ(167…

hep-ex2025

Measurement of the $η$ transition form factor through $η^{'} \to π^{+} π^{-} η$ decay

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

Based on a sample of $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected at BESIII, the transition form factor of the $η$ meson is extracted by analyzing $J/ψ\toγη',~η'\toπ^+π^…

hep-ex2025★ 2 cited

First measurement of $Σ^{+} n \to Λ p$ and $Σ^{+} n \to Σ^{0} p$ cross sections via $Σ^{+}$ -nucleus scattering at an electron-positron collider

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

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected with the BESIII detector at the BEPCII storage ring, the reactions $Σ^{+} n \to Λ p$ and $Σ^{+} n \to Σ^{0} p$ …

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

Observation of Transverse Polarization and Determination of Psionic Form Factors of the $Λ$ Hyperon at $s = 3.773$ GeV

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

Using a data sample of $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 20.3 fb $^{- 1}$ collected by the BESIII detector at the BEPCII collider, we present a…

Evidence for the semileptonic decays Λc+​→Σ±π∓e+νe​

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

First measurement of the cross sections for e+e−→K0K−π+J/ψ+c.c. at s​ from 4.396 to 4.951 GeV

First Measurement of the Ds+​→K0μ+νμ​ Decay

Observation of the electromagnetic radiative decays of the \boldmath{Λ(1520)} and \boldmath{Λ(1670)} to \boldmath{γΣ0}

Measurement of the η transition form factor through η′→π+π−η decay

First measurement of Σ+n→Λp and Σ+n→Σ0p cross sections via Σ+-nucleus scattering at an electron-positron collider

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

Observation of Transverse Polarization and Determination of Psionic Form Factors of the Λ Hyperon at s​=3.773 GeV

Evidence for the semileptonic decays $Λ_{c}^{+} \to Σ^{\pm} π^{\mp} e^{+} ν_{e}$

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

First measurement of the cross sections for $e^{+} e^{-} \to K^{0} K^{-} π^{+} J / ψ + c . c .$ at $s$ from 4.396 to 4.951 GeV

First Measurement of the $D_{s}^{+} \to K^{0} μ^{+} ν_{μ}$ Decay

Observation of the electromagnetic radiative decays of the \boldmath{ $Λ (1520)$ } and \boldmath{ $Λ (1670)$ } to \boldmath{ $γ Σ^{0}$ }

Measurement of the $η$ transition form factor through $η^{'} \to π^{+} π^{-} η$ decay

First measurement of $Σ^{+} n \to Λ p$ and $Σ^{+} n \to Σ^{0} p$ cross sections via $Σ^{+}$ -nucleus scattering at an electron-positron collider

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

Observation of Transverse Polarization and Determination of Psionic Form Factors of the $Λ$ Hyperon at $s = 3.773$ GeV