J. Qin

activity

20212026

most citedSTCF Conceptual Design Report: Volume 1 -- Physics & Detector

219 citations · 1.3k across the 155 of their papers we have counts for

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21 papers · 1 filter

hep-ex2022

Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +605

We present a study of the resonant structure of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$ , using quantum-correlated $D^{0} D ˉ^{0}$ data produced at $s = 3.773$ GeV. The data sampl…

hep-ex2022

Search for the weak radiative decay $Λ_{c}^{+} \to Σ^{+} γ$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

The Cabibbo-allowed weak radiative decay $Λ_{c}^{+} \to Σ^{+} γ$ has been searched for in a sample of $Λ_{c}^{+} Λ ˉ_{c}^{-}$ pairs produced in $e^{+} e^{-}$ annihilations, corresponding to an i…

hep-ex2022

First Direct Measurement of the Absolute Branching Fraction of $Σ^{+} \to Λ e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +591

The first direct measurement of the absolute branching fraction of $Σ^{+} \to Λ e^{+} ν_{e}$ is reported based on an $e^{+} e^{-}$ annihilation sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ eve…

hep-ex2022

Measurements of the electric and magnetic form factors of the neutron for time-like momentum transfer

BESIII Collaboration, M. Ablikim, M. N. Achasov +589

We present the first measurements of the electric and magnetic form factors of the neutron in the time-like (positive $q^{2}$ ) region as function of four-momentum transfer. We explor…

hep-ex2022★ 17 cited

Study of $e^{+} e^{-} \to Ω^{-} Ω ˉ^{+}$ at center-of-mass energies from 3.49 to 3.67 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +565

Using data samples of $e^{+} e^{-}$ collisions collected with the BESIII detector at eight center-of-mass energy points between 3.49 and 3.67 GeV, corresponding to an integrated luminos…

hep-ex2022★ 42 cited

Search for an axion-like particle in radiative $J / ψ$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +588

We search for an axion-like particle (ALP) $a$ through the process $ψ (3686) \to π^{+} π^{-} J / ψ$ , $J / ψ \to γ a$ , $a \to γ γ$ in a data sample of $(2.71 \pm 0.01) \times 1 0^{9}$ …

hep-ex2022★ 12 cited

Measurements of Differential Cross Sections of Inclusive $π^{0}$ and $K_{S}^{0}$ Production in $e^{+} e^{-}$ Annihilation at Energies from 2.2324 to 3.6710 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +572

Based on electron positron collision data collected with the BESIII detector operating at the BEPCII storage rings, the differential cross sections of inclusive $π^{0}$ and $K_{S}^{0}$ p…

hep-ex2022★ 30 cited

Observation of the $Y (4230)$ and evidence for a new vector charmonium-like state $Y (4710)$ in $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} J / ψ$

M. Ablikim, M. N. Achasov, P. Adlarson +563

Cross sections for the process $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} J / ψ$ at center-of-mass energies from $4.128$ to $4.950$ GeV are measured using data samples with a total integra…

hep-ex2022★ 7 cited

Study of $e^{+} e^{-} \to γ ϕ J / ψ$ from $s = 4.600$ to $4.951$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +571

Using data samples with an integrated luminosity of $6.4$ ~fb $^{- 1}$ collected by the BESIII detector operating at the BEPCII storage ring, the process of $e^{+} e^{-} \to γ ϕ J / ψ$ is studie…

hep-ex2022★ 16 cited

Observations of the Cabibbo-Suppressed decays $Λ_{c}^{+} \to n π^{+} π^{0}$ , $n π^{+} π^{-} π^{+}$ and the Cabibbo-Favored decay $Λ_{c}^{+} \to n K^{-} π^{+} π^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using electron-positron annihilation data samples corresponding to an integrated luminosity of 4.5 $fb^{- 1}$ , collected by the BESIII detector in the energy region between $…

hep-ex2022★ 13 cited

Improved measurement of the strong-phase difference $δ_{D}^{K π}$ in quantum-correlated $D D ˉ$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +568

The decay $D \to K^{-} π^{+}$ is studied in a sample of quantum-correlated $D D ˉ$ pairs, based on a data set corresponding to an integrated luminosity of 2.93\,fb $^{- 1}$ collected at…

hep-ex2022★ 16 cited

Search for invisible decays of a dark photon using $e^{+} e^{-}$ annihilation data at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +564

We report a search for a dark photon using $14.9$ ~fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data taken at center-of-mass energies from 4.13 to 4.60~GeV with the BESIII detector operated a…

hep-ex2022★ 8 cited

Study of $η (1405) / η (1475)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +567

Using a sample of $(10.09 \pm 0.04) \times 1 0^{9}$ $J / ψ$ decays collected with the BESIII detector, partial wave analyses of the decay $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ are performed w…

hep-ex2022★ 6 cited

Evidence for the Cusp Effect in $η^{'}$ Decays into $η π^{0} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +560

Using a sample of $4.3 \times 1 0^{5}$ $η^{'} \to η π^{0} π^{0}$ events selected from the ten billion $J / ψ$ event dataset collected with the BESIII detector, we study the decay $η^{'} \to η π^{0} π^{0}$ wit…

hep-ex2022

Measurement of the total and leptonic decay widths of the $J / ψ$ resonance with an energy scan method at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Using $e^{+} e^{-}$ annihilation data sets collected with the BESIII detector, we measure the cross sections of the processes $e^{+} e^{-} \to e^{+} e^{-}$ and $e^{+} e^{-} \to μ^{+} μ^{-}$ at fifteen cent…

hep-ex2022

Measurement of the branching fraction of the doubly Cabibbo-suppressed decay $D^{0} \to K^{+} π^{-} π^{0}$ and search for $D^{0} \to K^{+} π^{-} π^{0} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +548

Using $2.93 f b^{- 1}$ of $e^{+} e^{-}$ collision data collected at a center-of-mass energy of 3.773\,GeV with the BESIII detector, we present a measurement of the branching fraction…

hep-ex2022★ 12 cited

First Observation of the Direct Production of the $χ_{c 1}$ in $e^{+} e^{-}$ Annihilation

BESIII Collaboration

We study the direct production of the $J^{P C} = 1^{++}$ charmonium state $χ_{c 1} (1 P)$ in electron-positron annihilation by carrying out an energy scan around the mass of the $χ_{c1}(…

hep-ex2022★ 6 cited

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector at BEPCII, the double Dalitz decay $η^{'} \to e^{+} e^{-} e^{+} e^{-}$ is observed for the first time via the $…

hep-ex2022★ 1 cited

Measurement of $e^{+} e^{-} \to K^{+} K^{-} π^{0}$ cross section and observation of a resonant structure

BESIII Collaboration, M. Ablikim, M. N. Achasov +556

Based on $e^{+} e^{-}$ collision data collected by the BESIII detector at the BEPCII collider at center-of-mass energies from 2.000 to 3.080 GeV, a partial-wave analysis is performe…

hep-ex2022★ 8 cited

Study of the processes $χ_{c J} \to Ξ^{-} Ξ ˉ^{+}$ and $Ξ^{0} Ξ ˉ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

Using $448.1 \times 1 0^{6}$ $ψ (3686)$ decays collected with the BESIII detector at the BEPCII $e^{+} e^{-}$ storage rings, the branching fractions and angular distributions of the decays…

hep-ex2022★ 6 cited

Search for $X (3872) \to π^{0} χ_{c 0}$ and $X (3872) \to π π χ_{c 0}$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +556

Using 9.9 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector at center-of-mass energies between 4.15 and 4.30 GeV, we search for the processes $e^+e^-\toγX(3872)…

Determination of U-spin breaking parameters with an amplitude analysis of the decay D0→KL0​π+π−

Search for the weak radiative decay Λc+​→Σ+γ at BESIII

First Direct Measurement of the Absolute Branching Fraction of Σ+→Λe+νe​

Measurements of the electric and magnetic form factors of the neutron for time-like momentum transfer

Study of e+e−→Ω−Ωˉ+ at center-of-mass energies from 3.49 to 3.67 GeV

Search for an axion-like particle in radiative J/ψ decays

Measurements of Differential Cross Sections of Inclusive π0 and KS0​ Production in e+e− Annihilation at Energies from 2.2324 to 3.6710 GeV

Observation of the Y(4230) and evidence for a new vector charmonium-like state Y(4710) in e+e−→KS0​KS0​J/ψ

Study of e+e−→γϕJ/ψ from s​=4.600 to 4.951 GeV

Observations of the Cabibbo-Suppressed decays Λc+​→nπ+π0, nπ+π−π+ and the Cabibbo-Favored decay Λc+​→nK−π+π+

Improved measurement of the strong-phase difference δDKπ​ in quantum-correlated DDˉ decays

Search for invisible decays of a dark photon using e+e− annihilation data at BESIII

Study of η(1405)/η(1475) in J/ψ→γKS0​KS0​π0 decay

Evidence for the Cusp Effect in η′ Decays into ηπ0π0

Measurement of the total and leptonic decay widths of the J/ψ resonance with an energy scan method at BESIII

Measurement of the branching fraction of the doubly Cabibbo-suppressed decay D0→K+π−π0 and search for D0→K+π−π0π0

First Observation of the Direct Production of the χc1​ in e+e− Annihilation

Observation of the double Dalitz decay η′→e+e−e+e−

Measurement of e+e−→K+K−π0 cross section and observation of a resonant structure

Study of the processes χcJ​→Ξ−Ξˉ+ and Ξ0Ξˉ0

Search for X(3872)→π0χc0​ and X(3872)→ππχc0​ at BESIII

Determination of U-spin breaking parameters with an amplitude analysis of the decay $D^{0} \to K_{L}^{0} π^{+} π^{-}$

Search for the weak radiative decay $Λ_{c}^{+} \to Σ^{+} γ$ at BESIII

First Direct Measurement of the Absolute Branching Fraction of $Σ^{+} \to Λ e^{+} ν_{e}$

Study of $e^{+} e^{-} \to Ω^{-} Ω ˉ^{+}$ at center-of-mass energies from 3.49 to 3.67 GeV

Search for an axion-like particle in radiative $J / ψ$ decays

Measurements of Differential Cross Sections of Inclusive $π^{0}$ and $K_{S}^{0}$ Production in $e^{+} e^{-}$ Annihilation at Energies from 2.2324 to 3.6710 GeV

Observation of the $Y (4230)$ and evidence for a new vector charmonium-like state $Y (4710)$ in $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} J / ψ$

Study of $e^{+} e^{-} \to γ ϕ J / ψ$ from $s = 4.600$ to $4.951$ GeV

Observations of the Cabibbo-Suppressed decays $Λ_{c}^{+} \to n π^{+} π^{0}$ , $n π^{+} π^{-} π^{+}$ and the Cabibbo-Favored decay $Λ_{c}^{+} \to n K^{-} π^{+} π^{+}$

Improved measurement of the strong-phase difference $δ_{D}^{K π}$ in quantum-correlated $D D ˉ$ decays

Search for invisible decays of a dark photon using $e^{+} e^{-}$ annihilation data at BESIII

Study of $η (1405) / η (1475)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ decay

Evidence for the Cusp Effect in $η^{'}$ Decays into $η π^{0} π^{0}$

Measurement of the total and leptonic decay widths of the $J / ψ$ resonance with an energy scan method at BESIII

Measurement of the branching fraction of the doubly Cabibbo-suppressed decay $D^{0} \to K^{+} π^{-} π^{0}$ and search for $D^{0} \to K^{+} π^{-} π^{0} π^{0}$

First Observation of the Direct Production of the $χ_{c 1}$ in $e^{+} e^{-}$ Annihilation

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

Measurement of $e^{+} e^{-} \to K^{+} K^{-} π^{0}$ cross section and observation of a resonant structure

Study of the processes $χ_{c J} \to Ξ^{-} Ξ ˉ^{+}$ and $Ξ^{0} Ξ ˉ^{0}$

Search for $X (3872) \to π^{0} χ_{c 0}$ and $X (3872) \to π π χ_{c 0}$ at BESIII