X. L. Ji

collaborators

28 papers

hep-ex2026

Observation of the $χ_{c J}$ decays into $p K^{-} Λ ˉ η + c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +780

By analyzing $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays $χ_{cJ} \to pK^{-}\barΛη+ \mathrm{c.…

hep-ex2026

Evidence for $η_{c} (2 S) \to p p ˉ π^{+} π^{-} π^{0}$ and observation of $χ_{c J} \to p p ˉ π^{+} π^{-} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +771

Using $(2.712 \pm 0.014) \times 1 0^{9}$ $ψ (3686)$ events collected by the BESIII detector at the BEPCII collider, the $ψ (3686) \to γ p p ˉ π^{+} π^{-} π^{0}$ process is investigated. Evidence…

hep-ex2026

First measurements of the branching fractions of $J / ψ$ and $ψ (3686) \to Σ^{0} Σ ˉ^{0} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +771

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ and $(2712 \pm 14) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, the hadronic decays $J/ψ\to…

hep-ex2026

Measurement of Branching Fraction and Transition Magnetic Moment of the Hyperon Dalitz Decay $Σ^{0} \to Λ e^{+} e^{-}$

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

Based on a data sample of 10 billion $J / ψ$ events collected with the BESIII detector operating at the BEPCII collider, the Dalitz decay $Σ^{0} \to Λ e^{+} e^{-}$ is studied experim…

hep-ex2026

High-precision measurement of the space-like $η^{'}$ transition form factor

BESIII Collaboration, M. Ablikim, M. N. Achasov +779

Using a data sample corresponding to an integrated luminosity of $20.3 fb^{- 1}$ , collected with the BESIII detector at a center-of-mass energy of $3.773 GeV$ at the…

hep-ex2026

Search for the charged lepton flavour violating decay $η^{'} \to e μ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +765

Based on $(8998 \pm 40) \times 1 0^{6}$ $J / ψ$ events collected in $e^{+} e^{-}$ collisions at $s = 3.097$ GeV with the BESIII detector, we present a search for the charged lepton flavou…

hep-ex2026

Precision Measurement of Decay Dynamics in $D^{0 (+)} \to π^{- (0)} ℓ^{+} ν_{ℓ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +773

The branching fractions of $D^{0} \to π^{-} e^{+} ν_{e}$ , $D^{0} \to π^{-} μ^{+} ν_{μ}$ , $D^{+} \to π^{0} e^{+} ν_{e}$ , and $D^{+} \to π^{0} μ^{+} ν_{μ}$ are precisely measured, using 20.3 fb $^{- 1}$ of $e^{+} e^{-}$ collision dat…

hep-ex2026

Precision measurements of semleptonic decays $D^{0} \to π^{-} ℓ^{+} ν_{ℓ}$ and $D^{+} \to π^{0} ℓ^{+} ν_{ℓ}$ ( $ℓ = e, μ$ )

BESIII Collaboration, M. Ablikim, M. N. Achasov +773

The branching fractions of $D^{0} \to π^{-} e^{+} ν_{e}$ , $D^{0} \to π^{-} μ^{+} ν_{μ}$ , $D^{+} \to π^{0} e^{+} ν_{e}$ , and $D^{+} \to π^{0} μ^{+} ν_{μ}$ are measured to be $(2.950\pm0.017_{\rm stat.}\pm 0.017_{\rm syst.})\t…

hep-ex2026

Measurement of Born Cross Section for $e^{+} e^{-} \to K_{S}^{0} Ξ ˉ^{+} Σ^{-} + c.c.$ at $s = 3.51 - 4.95$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +759

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at the BEPCII collider corresponding to a total integrated luminosity of 44~fb $^{- 1}$ , we present the first measure…

hep-ex2026

Proof of principle for nucleon polarization measurement at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +754

A novel technique for measuring the spin polarization of final-state nucleons in a general-purpose spectrometer is validated. Using $10.09 \times 1 0^{9}$ $J / ψ$ events at BESIII, the…

hep-ex2026

Observation of $η_{c} \to p p ˉ η$ via $ψ (3686) \to γ p p ˉ η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +766

The decay $η_{c} \to p p ˉ η$ is observed for the first time with a significance of exceeding $10 σ$ . It is found by analyzing $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events accumu…

hep-ex2026

Search for an isoscalar partner of the $Z_{c} (3900)$ in $e^{+} e^{-} \to π^{+} π^{-} η J / ψ$

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

Using a data sample corresponding to an integrated luminosity of 20.3 fb $^{- 1}$ collected at center-of-mass energies from 4.18 to 4.95 GeV with the BESIII detector, we observe the…

hep-ex2026

Observation and branching fraction measurements of $J / ψ \to p p ˉ K_{S}^{0} K_{S}^{0}$ and $ψ (3686) \to p p ˉ K_{S}^{0} K_{S}^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +765

Using $(10.087 \pm 0.044) \times 1 0^{9}$ $J / ψ$ events and $(2.712 \pm 0.014) \times 1 0^{9}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the fi…

hep-ex2026

Study of the $e^{+} e^{-} \to π^{+} π^{-} D_{s}^{+} D_{s}^{-}$ process from $s$ = 4.42 to 4.95 GeV at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +782

Based on $8.5 fb^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies between 4.42 and 4.95 GeV with the BESIII detector at the BEPCII storage ring, we inves…

hep-ex2026

Evidence of $ψ (3770) \to π^{0} J / ψ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +766

We report the first evidence for the hadronic transition $ψ (3770) \to π^{0} J / ψ$ using a data sample of $20.3 fb^{- 1}$ collected at $s = 3.773$ ~GeV with the BESIII de…

hep-ex2026

Measurement of the branching fraction of $D_{s}^{*+} \to e^{+} e^{-} D_{s}^{+}$

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

The branching fraction of the electromagnetic Dalitz decay $D_{s}^{*+} \to e^{+} e^{-} D_{s}^{+}$ is measured with an $e^{+} e^{-}$ collision data sample collected by the BESIII experi…

hep-ex2026

Measurement of the double Dalitz decay $η \to e^{+} e^{-} e^{+} e^{-}$

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

Using a data sample of $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected with the BESIII detector, we study the rare double Dalitz decay of $η \to e^{+} e^{-} e^{+} e^{-}$ …

hep-ex2026

Amplitude Analysis of Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to p K^{+} K^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +683

Using a sample of $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 4.4 $fb^{- 1}$ collected with the BESIII detector at the BEPCII collider and produ…

hep-ex2026

Improved measurements of the coherence factors and strong-phase differences in $D \to K^{-} π^{+} π^{+} π^{-}$ and $D \to K^{-} π^{+} π^{0}$ with quantum-correlated $D D ˉ$ decays

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

Improved measurements of the coherence factors and strong-phase differences in $D \to K^{-} π^{+} π^{+} π^{-}$ and $D \to K^{-} π^{+} π^{0}$ decays are reported, using quantum-correlated $D D ˉ$ pai…

hep-ex2026

Observation of $Λ ˉ p \to K^{+} π^{+} π^{-} π^{0}$ and $Λ ˉ p \to K^{+} π^{+} π^{-} 2 π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +750

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector at a center-of-mass energy of $s = 3.097$ GeV, the antihyperon-nucleon annihilation processe…

hep-ex2026

Amplitude analysis and branching fraction measurement of $J / ψ \to Λ Σ ˉ^{0} η + c.c$

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

Based on a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, a partial-wave analysis of $J / ψ \to Λ Σ ˉ^{0} η + c.c$ is performed for th…

hep-ex2026

Precise measurements of $D^{0} \to K^{-} ℓ^{+} ν_{ℓ}$ and $D^{+} \to K ˉ^{0} ℓ^{+} ν_{ℓ}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +758

Using $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 20.3 fb $^{- 1}$ , collected at the center-of-mass energy of 3.773 GeV with the BESIII detector, we present…

hep-ex2026

First Experimental Constraint on the Scalar Current in the $D^{0 (+)} \to K ˉ ℓ^{+} ν_{ℓ}$ Transition

BESIII Collaboration, M. Ablikim, M. N. Achasov +758

Using 20.3 fb $^{- 1}$ of $e^{+} e^{-}$ collision data taken at the center-of-mass energy of $s = 3.773$ GeV, we report the first experimental constraint on the scalar current in the…

hep-ex2026

Observation of $Ξ (1530)^{0}$ Polarization and Determination of Its Electric and Magnetic Moments in $ψ (3686) \to Ξ (1530)^{0} Ξ ˉ (1530)^{0}$

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

Using the data sample of $2.7 \times 1 0^{9}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, we present an observation of the $Ξ (1530)^{0}$ polarization in th…

Observation of the χcJ​ decays into pK−Λˉη+c.c.

Evidence for ηc​(2S)→ppˉ​π+π−π0 and observation of χcJ​→ppˉ​π+π−π0

First measurements of the branching fractions of J/ψ and ψ(3686)→Σ0Σˉ0η

Measurement of Branching Fraction and Transition Magnetic Moment of the Hyperon Dalitz Decay Σ0→Λe+e−

High-precision measurement of the space-like η′ transition form factor

Search for the charged lepton flavour violating decay η′→eμ

Precision Measurement of Decay Dynamics in D0(+)→π−(0)ℓ+νℓ​

Precision measurements of semleptonic decays D0→π−ℓ+νℓ​ and D+→π0ℓ+νℓ​ (ℓ=e,μ)

Measurement of Born Cross Section for e+e−→KS0​Ξˉ+Σ−+c.c. at s​=3.51−4.95 GeV

Proof of principle for nucleon polarization measurement at BESIII

Observation of ηc​→ppˉ​η via ψ(3686)→γppˉ​η

Search for an isoscalar partner of the Zc​(3900) in e+e−→π+π−ηJ/ψ

Observation and branching fraction measurements of J/ψ→ppˉ​KS0​KS0​ and ψ(3686)→ppˉ​KS0​KS0​

Study of the e+e−→π+π−Ds+​Ds−​ process from s​ = 4.42 to 4.95 GeV at BESIII

Evidence of ψ(3770)→π0J/ψ

Measurement of the branching fraction of Ds∗+​→e+e−Ds+​

Measurement of the double Dalitz decay η→e+e−e+e−

Amplitude Analysis of Singly Cabibbo-Suppressed Decay Λc+​→pK+K−

Improved measurements of the coherence factors and strong-phase differences in D→K−π+π+π− and D→K−π+π0 with quantum-correlated DDˉ decays

Observation of Λˉp→K+π+π−π0 and Λˉp→K+π+π−2π0

Amplitude analysis and branching fraction measurement of J/ψ→ΛΣˉ0η+c.c

Precise measurements of D0→K−ℓ+νℓ​ and D+→Kˉ0ℓ+νℓ​ decays

First Experimental Constraint on the Scalar Current in the D0(+)→Kˉℓ+νℓ​ Transition

Observation of Ξ(1530)0 Polarization and Determination of Its Electric and Magnetic Moments in ψ(3686)→Ξ(1530)0Ξˉ(1530)0

Observation of the $χ_{c J}$ decays into $p K^{-} Λ ˉ η + c.c.$

Evidence for $η_{c} (2 S) \to p p ˉ π^{+} π^{-} π^{0}$ and observation of $χ_{c J} \to p p ˉ π^{+} π^{-} π^{0}$

First measurements of the branching fractions of $J / ψ$ and $ψ (3686) \to Σ^{0} Σ ˉ^{0} η$

Measurement of Branching Fraction and Transition Magnetic Moment of the Hyperon Dalitz Decay $Σ^{0} \to Λ e^{+} e^{-}$

High-precision measurement of the space-like $η^{'}$ transition form factor

Search for the charged lepton flavour violating decay $η^{'} \to e μ$

Precision Measurement of Decay Dynamics in $D^{0 (+)} \to π^{- (0)} ℓ^{+} ν_{ℓ}$

Precision measurements of semleptonic decays $D^{0} \to π^{-} ℓ^{+} ν_{ℓ}$ and $D^{+} \to π^{0} ℓ^{+} ν_{ℓ}$ ( $ℓ = e, μ$ )

Measurement of Born Cross Section for $e^{+} e^{-} \to K_{S}^{0} Ξ ˉ^{+} Σ^{-} + c.c.$ at $s = 3.51 - 4.95$ GeV

Observation of $η_{c} \to p p ˉ η$ via $ψ (3686) \to γ p p ˉ η$

Search for an isoscalar partner of the $Z_{c} (3900)$ in $e^{+} e^{-} \to π^{+} π^{-} η J / ψ$

Observation and branching fraction measurements of $J / ψ \to p p ˉ K_{S}^{0} K_{S}^{0}$ and $ψ (3686) \to p p ˉ K_{S}^{0} K_{S}^{0}$

Study of the $e^{+} e^{-} \to π^{+} π^{-} D_{s}^{+} D_{s}^{-}$ process from $s$ = 4.42 to 4.95 GeV at BESIII

Evidence of $ψ (3770) \to π^{0} J / ψ$

Measurement of the branching fraction of $D_{s}^{*+} \to e^{+} e^{-} D_{s}^{+}$

Measurement of the double Dalitz decay $η \to e^{+} e^{-} e^{+} e^{-}$

Amplitude Analysis of Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to p K^{+} K^{-}$

Improved measurements of the coherence factors and strong-phase differences in $D \to K^{-} π^{+} π^{+} π^{-}$ and $D \to K^{-} π^{+} π^{0}$ with quantum-correlated $D D ˉ$ decays

Observation of $Λ ˉ p \to K^{+} π^{+} π^{-} π^{0}$ and $Λ ˉ p \to K^{+} π^{+} π^{-} 2 π^{0}$

Amplitude analysis and branching fraction measurement of $J / ψ \to Λ Σ ˉ^{0} η + c.c$

Precise measurements of $D^{0} \to K^{-} ℓ^{+} ν_{ℓ}$ and $D^{+} \to K ˉ^{0} ℓ^{+} ν_{ℓ}$ decays

First Experimental Constraint on the Scalar Current in the $D^{0 (+)} \to K ˉ ℓ^{+} ν_{ℓ}$ Transition

Observation of $Ξ (1530)^{0}$ Polarization and Determination of Its Electric and Magnetic Moments in $ψ (3686) \to Ξ (1530)^{0} Ξ ˉ (1530)^{0}$