A. Q. Zhang

activity

20222025

C P

Symmetry in Hyperon to Neutron Decays

17 citations · 115 across the 23 of their papers we have counts for

collaborators

23 papers

hep-ex2025

Precise Measurement of Chromoelectric Dipole Moment of the Charm Quark

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

The combined symmetry of charge conjugation and parity ( $C P$ ) is tested in the hadronic transition $ψ (3686) \to π^{+} π^{-} J / ψ$ , using a dataset of $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ(3686…

hep-ex2025★ 4 cited

Study of the electromagnetic Dalitz decay $J / ψ \to e^{+} e^{-} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +640

We report the first measurement of the di-electron invariant mass dependent transition form factor in the electromagnetic Dalitz decay $J / ψ \to e^{+} e^{-} π^{0}$ using $(10087 \pm 44) \ti…

hep-ex2024★ 5 cited

Study of $e^{+} e^{-} \to ω X (3872)$ and $γ X (3872)$ from 4.66 to 4.95 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +640

Using data samples with an integrated luminosity of $4.5 fb^{- 1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.66 to 4.95 GeV, we study the pro…

hep-ex2024★ 2 cited

Observation of $ψ (3686) \to 3 ϕ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +651

Using $(2.712 \pm 0.014) \times 1 0^{9}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of $ψ (3686) \to 3 ϕ$ decay with…

hep-ex2024★ 4 cited

Observation of $D^{+} \to f_{0} (500) μ^{+} ν_{μ}$ and study of $D^{+} \to π^{+} π^{-} ℓ^{+} ν_{ℓ}$ decay dynamics

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

Using $2.93 fb^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector at the center-of-mass energy of 3.773 GeV,we investigate the semileptonic decays $D^+\to…

hep-ex2024★ 4 cited

Improved measurements of the Dalitz decays $η / η^{'} \to γ e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +628

Based on a data sample of 10 billion $J / ψ$ events collected with the BESIII detector, improved measurements of the Dalitz decays $η / η^{'} \to γ e^{+} e^{-}$ are performed, where the $…

hep-ex2024★ 1 cited

Partial Wave Analysis of $J / ψ \to γ γ ϕ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected by the BESIII detector at the BEPCII collider, a partial-wave analysis of the decay $γ γ ϕ$ is performed to invest…

hep-ex2023★ 7 cited

Search for the decay $χ_{c 1} (3872) \to π^{+} π^{-} χ_{c 1}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

Using a data sample corresponding to an integrated luminosity of 10.9 fb $^{- 1}$ collected at center-of-mass energies from 4.16 to 4.34 GeV with the BESIII detector, we search for t…

hep-ex2023★ 3 cited

Measurement of Branching Fractions for $Λ_{c}^{+} \to n K_{S}^{0} π^{+}$ and $Λ_{c}^{+} \to n K_{S}^{0} K^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

Based on 4.5 fb $^{- 1}$ of $e^{+} e^{-}$ collision data accumulated at center-of-mass energies between $4.600 GeV$ and $4.699 GeV$ with the BESIII detector, we me…

hep-ex2023★ 6 cited

First observation of $Λ_{c}^{+} \to Λ K^{+} π^{0}$ and evidence of $Λ_{c}^{+} \to Λ K^{+} π^{+} π^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

We present the first observation of the singly Cabibbo-suppressed decay $Λ_{c}^{+} \to Λ K^{+} π^{0}$ with a significance of $5.7 σ$ and the first evidence of $Λ_c^+ \rightarrow ΛK^+π…

hep-ex2023★ 3 cited

Measurement of the absolute branching fraction of the three-body decay $Λ_{c}^{+} \to Ξ^{0} K^{+} π^{0}$ and search for $Λ_{c}^{+} \to n K^{+} π^{0}$ , $Σ^{0} K^{+} π^{0}$ and $Λ K^{+} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

The Cabbibo-favored decay $Λ_{c}^{+} \to Ξ^{0} K^{+} π^{0}$ is studied for the first time using 6.1 fb $^{- 1}$ of $e^{+} e^{-}$ collision data at center-of-mass energies between 4.600 and 4.…

hep-ex2023★ 7 cited

Updated measurements of the M1 transition $ψ (3686) \to γ η_{c} (2 S)$ with $η_{c} (2 S) \to K K ˉ π$

BESIII Collaboration, M. Ablikim, M. N. Achasov +620

Based on a data sample of $(27.08 \pm 0.14) \times 1 0^{8} ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, the M1 transition $ψ (3686) \to γ η_{c} (2 S)$ with…

hep-ex2023

Search for the semileptonic decays $D_{s}^{+} \to K_{1} (1270)^{0} e^{+} ν_{e}$ and $D_{s}^{+} \to b_{1} (1235)^{0} e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

By analyzing 7.33\,fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic de…

hep-ex2023★ 1 cited

Observation of the Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to Σ^{-} K^{+} π^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +616

The singly Cabibbo-suppressed decay $Λ_{c}^{+} \to Σ^{-} K^{+} π^{+}$ is observed for the first time with a statistical significance of $6.4 σ$ by using 4.5 fb $^{- 1}$ of $e^{+} e^{-}$ colli…

hep-ex2023★ 2 cited

Search for the light hadron decay $χ_{c 1} (3872) \to π^{+} π^{-} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

With a data sample corresponding to an integrated luminosity of 11.5~fb $^{- 1}$ collected with the BESIII detector operating at the BEPCII storage ring, for the first time the light…

hep-ex2023★ 7 cited

Improved measurement of the branching fraction of $D_{s}^{+} \to μ^{+} ν_{μ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

Using $e^{+} e^{-}$ collision data with an integrated luminosity of $7.33 fb^{- 1}$ collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector ope…

hep-ex2023★ 3 cited

Search for baryon and lepton number violating decays of $Ξ^{0}$ hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +602

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected by the BESIII detector at the BEPCII collider, we report the first search for the baryon and lepton number violating d…

hep-ex2023★ 4 cited

Determination of the $C P$ -even fraction of $D^{0} \to K_{S}^{0} π^{+} π^{-} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

Quantum-correlated $D D ˉ$ pairs collected by the BESIII experiment at the $ψ (3770)$ resonance, corresponding to an integrated luminosity of 2.93 fb $^{- 1}$ , are used to study th…

hep-ex2023★ 17 cited

Test of $C P$ Symmetry in Hyperon to Neutron Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

The quantum entangled $J / ψ \to Σ^{+} Σ ˉ^{-}$ pairs from $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events taken by the BESIII detector are used to study the non-leptonic two-body weak…

hep-ex2023★ 4 cited

Measurement of branching fractions of $Λ_{c}^{+}$ decays to $Σ^{+} K^{+} K^{-}$ , $Σ^{+} ϕ$ and $Σ^{+} K^{+} π^{-} (π^{0})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +612

Based on 4.5 fb $^{- 1}$ data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractio…

hep-ex2023★ 9 cited

Determination of Spin-parity Quantum Numbers for the Narrow Structure Near the $p Λ ˉ$ Threshold in $e^{+} e^{-} \to p K^{-} Λ ˉ + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +593

A narrow structure in the $p Λ ˉ$ system near the mass threshold, named as $X (2085)$ , is observed in the process $e^{+} e^{-} \to p K^{-} Λ ˉ$ with a statistical significance greater th…

hep-ex2023★ 7 cited

Updated measurement of the branching fraction of $D_{s}^{+} \to τ^{+} ν_{τ}$ via $τ^{+} \to π^{+} ν ˉ_{τ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +614

This paper reports the study of $D_{s}^{+} \to τ^{+} ν$ via $τ^{+} \to π^{+} ν ˉ_{τ}$ using a boosted decision tree method, with $7.33$ fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the B…

hep-ex2022★ 15 cited

Measurement of $e^{+} e^{-} \to π^{+} π^{-} D^{+} D^{-}$ cross sections at center-of-mass energies from 4.190 to 4.946 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +561

Using data samples collected with the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the $e^{+} e^{-} \to π^{+} π^{-} D^{+} D^{-}$ process…

Precise Measurement of Chromoelectric Dipole Moment of the Charm Quark

Study of the electromagnetic Dalitz decay J/ψ→e+e−π0

Study of e+e−→ωX(3872) and γX(3872) from 4.66 to 4.95 GeV

Observation of ψ(3686)→3ϕ

Observation of D+→f0​(500)μ+νμ​ and study of D+→π+π−ℓ+νℓ​ decay dynamics

Improved measurements of the Dalitz decays η/η′→γe+e−

Partial Wave Analysis of J/ψ→γγϕ

Search for the decay χc1​(3872)→π+π−χc1​

Measurement of Branching Fractions for Λc+​→nKS0​π+ and Λc+​→nKS0​K+

First observation of Λc+​→ΛK+π0 and evidence of Λc+​→ΛK+π+π−

Measurement of the absolute branching fraction of the three-body decay Λc+​→Ξ0K+π0 and search for Λc+​→nK+π0, Σ0K+π0 and ΛK+π0

Updated measurements of the M1 transition ψ(3686)→γηc​(2S) with ηc​(2S)→KKˉπ

Search for the semileptonic decays Ds+​→K1​(1270)0e+νe​ and Ds+​→b1​(1235)0e+νe​

Observation of the Singly Cabibbo-Suppressed Decay Λc+​→Σ−K+π+

Search for the light hadron decay χc1​(3872)→π+π−η

Improved measurement of the branching fraction of Ds+​→μ+νμ​

Search for baryon and lepton number violating decays of Ξ0 hyperons

Determination of the CP-even fraction of D0→KS0​π+π−π0

Test of CP Symmetry in Hyperon to Neutron Decays

Measurement of branching fractions of Λc+​ decays to Σ+K+K−, Σ+ϕ and Σ+K+π−(π0)

Determination of Spin-parity Quantum Numbers for the Narrow Structure Near the pΛˉ Threshold in e+e−→pK−Λˉ+c.c.

Updated measurement of the branching fraction of Ds+​→τ+ντ​ via τ+→π+νˉτ​

Measurement of e+e−→π+π−D+D− cross sections at center-of-mass energies from 4.190 to 4.946 GeV

Study of the electromagnetic Dalitz decay $J / ψ \to e^{+} e^{-} π^{0}$

Study of $e^{+} e^{-} \to ω X (3872)$ and $γ X (3872)$ from 4.66 to 4.95 GeV

Observation of $ψ (3686) \to 3 ϕ$

Observation of $D^{+} \to f_{0} (500) μ^{+} ν_{μ}$ and study of $D^{+} \to π^{+} π^{-} ℓ^{+} ν_{ℓ}$ decay dynamics

Improved measurements of the Dalitz decays $η / η^{'} \to γ e^{+} e^{-}$

Partial Wave Analysis of $J / ψ \to γ γ ϕ$

Search for the decay $χ_{c 1} (3872) \to π^{+} π^{-} χ_{c 1}$

Measurement of Branching Fractions for $Λ_{c}^{+} \to n K_{S}^{0} π^{+}$ and $Λ_{c}^{+} \to n K_{S}^{0} K^{+}$

First observation of $Λ_{c}^{+} \to Λ K^{+} π^{0}$ and evidence of $Λ_{c}^{+} \to Λ K^{+} π^{+} π^{-}$

Measurement of the absolute branching fraction of the three-body decay $Λ_{c}^{+} \to Ξ^{0} K^{+} π^{0}$ and search for $Λ_{c}^{+} \to n K^{+} π^{0}$ , $Σ^{0} K^{+} π^{0}$ and $Λ K^{+} π^{0}$

Updated measurements of the M1 transition $ψ (3686) \to γ η_{c} (2 S)$ with $η_{c} (2 S) \to K K ˉ π$

Search for the semileptonic decays $D_{s}^{+} \to K_{1} (1270)^{0} e^{+} ν_{e}$ and $D_{s}^{+} \to b_{1} (1235)^{0} e^{+} ν_{e}$

Observation of the Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to Σ^{-} K^{+} π^{+}$

Search for the light hadron decay $χ_{c 1} (3872) \to π^{+} π^{-} η$

Improved measurement of the branching fraction of $D_{s}^{+} \to μ^{+} ν_{μ}$

Search for baryon and lepton number violating decays of $Ξ^{0}$ hyperons

Determination of the $C P$ -even fraction of $D^{0} \to K_{S}^{0} π^{+} π^{-} π^{0}$

Test of $C P$ Symmetry in Hyperon to Neutron Decays

Measurement of branching fractions of $Λ_{c}^{+}$ decays to $Σ^{+} K^{+} K^{-}$ , $Σ^{+} ϕ$ and $Σ^{+} K^{+} π^{-} (π^{0})$

Determination of Spin-parity Quantum Numbers for the Narrow Structure Near the $p Λ ˉ$ Threshold in $e^{+} e^{-} \to p K^{-} Λ ˉ + c . c .$

Updated measurement of the branching fraction of $D_{s}^{+} \to τ^{+} ν_{τ}$ via $τ^{+} \to π^{+} ν ˉ_{τ}$

Measurement of $e^{+} e^{-} \to π^{+} π^{-} D^{+} D^{-}$ cross sections at center-of-mass energies from 4.190 to 4.946 GeV