X. Qin

collaborators

19 papers

hep-ex2026

First measurement of $ψ (3686) \to p ˉ K^{+} Σ^{} (1385)^{0} + c . c .$ and $ψ (3686) \to p ˉ K^{} (892)^{0} Σ^{+} + c . c .$

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

Based on a sample of $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, we report the first observation of the decays $ψ(36…

hep-ex2026

Precise Measurement of the Inclusive Cross Sections of Open-Charm Mesons at Energies from 3.80 to 4.95 GeV

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

Using $e^{+} e^{-}$ collision data collected by the BESIII detector at center-of-mass energies from $3.80$ to $4.95 GeV$ , the inclusive production cross sections of open-charm me…

hep-ex2026

Measurement of Born cross sections of $e^{+} e^{-} \to p K^{-} Σ ˉ^{0}$ + c.c. at $s$ = 3.5-4.9 GeV and partial wave analysis at $s$ = 3.773 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +770

Using $e^{+} e^{-}$ collision data collected by the BESIII detector at BEPCII corresponding to a total integrated luminosity of 44.6 $f b^{- 1}$ , we present the first measurement of t…

hep-ex2026

Amplitude analysis of $ψ (3686)$ radiative decays into $π^{0} π^{0}$ system

BESIII Collaboration, M. Ablikim, M. N. Achasov +767

A model-independent amplitude analysis of the $π^{0} π^{0}$ system produced in radiative $ψ (3686)$ decays is presented. The analysis is based on the unique dataset of $(2712.4\pm14…

cs.NE2026

CoFlu-Brain: An fMRI Connectivity Foundation Model with Cofluctuation-Based Pretraining

Ziteng Sui, Junfeng Xia, Wenhao Ye +2

Functional magnetic resonance imaging (fMRI) commonly characterizes large-scale brain organization through functional connectivity (FC). However, an observed FC matrix is not a fix…

hep-ex2026

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

BESIII Collaboration, M. Ablikim, M. N. Achasov +770

We perform a simultaneous amplitude analysis of the decays $D^{0} \to K_{S}^{0} π^{+} π^{-}$ and $D^{0} \to K_{L}^{0} π^{+} π^{-}$ using an $e^{+} e^{-}$ collision data sample, co…

hep-ex2026

Observation of a Threshold Enhancement in the $π^{0} π^{0}$ Mass Spectrum in $ψ (3686) \to π^{0} π^{0} J / ψ$ Decays

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

Using a data sample of $(2712.4 \pm 14.4) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector, we report a high-precision study of the $π^{0} π^{0}$ mass spectrum from $…

hep-ex2026

Observation of the electromagnetic Dalitz transition $J / ψ \to e^{+} e^{-} η_{c}$

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

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 observation of the electromagnetic Dalitz d…

hep-ex2026

First observation of the electromagnetic Dalitz decay $ψ (3686) \to μ^{+} μ^{-} η^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +776

Utilizing $(2712.4 \pm 14.3) \times 1 0^{6} ψ (3686)$ events collected by the BESIII detector at the symmetric $e^{+} e^{-}$ collider BEPCII, we report the first observation of the elect…

hep-ex2026

Observation of $D^{+} \to K^{* 0} ρ^{+}$ and $D^{+} \to K^{*+} ρ^{0}$ in Doubly Cabibbo-Suppressed Decay $D^{+} \to K^{+} π^{+} π^{-} π^{0}$

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

By analyzing an $e^{+} e^{-}$ collision data sample with an integrated luminosity of 20.3 fb $^{- 1}$ collected with the BESIII detector at the center-of-mass energy of 3.773 GeV, we perf…

hep-ex2026

Improved search for $ψ (3770) \to γ η_{c} (1 S, 2 S)$ radiative transitions

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

Based on an integrated luminosity of $20.3 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at a center-of-mass energy of $3.773 GeV$ with the BESIII detector ope…

hep-ex2026

Observation of $η (2600)$ and Threshold Enhancements in the $Λ Λ ˉ$ System

BESIII Collaboration, M. Ablikim, M. N. Achasov +716

Using $2712.4 \pm 14.3$ million $ψ (3686)$ events collected with the BESIII detector, the $Λ Λ ˉ$ system produced in $ψ (3686)$ radiative decays is studied. A model-independent part…

hep-ex2026

Observation of double $s s ˉ$ production in $e^{+} e^{-}$ collision at $s = 3.08 GeV$

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

We report the observation of significant double- $s s ˉ$ production in the $e^{+} e^{-}$ continuum, based on the measurement of prompt $ϕ$ mesons produced in association with hadrons…

hep-ex2026

Evidence for the semileptonic decay $Λ_{c}^{+} \to p π^{-} e^{+} ν_{e}$

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

Based on $4.5 fb^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between $4.600 GeV$ and…

hep-ex2026

Search for the doubly Cabibbo-suppressed decays $D^{0} \to K^{+} π^{-} η^{'}$ and $D^{+} \to K^{+} π^{0} η^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +774

We present the first search for the doubly Cabibbo-suppressed decays $D^{0} \to K^{+} π^{-} η^{'}$ and $D^{+} \to K^{+} π^{0} η^{'}$ using an $e^{+} e^{-}$ collision data sample corresponding to an…

hep-ex2026

Amplitude Analysis of the Isospin-Violating Decay $J / ψ \to γ η π^{0}$

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

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we perform the first amplitude analysis of the process $J / ψ \to γ η π^{0}$ . The decay is dominated b…

hep-ex2026

Search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$

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

A search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$ is conducted using $20.3 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at the cen…

hep-ex2026

Search for the charmonium weak decay $ψ (2 S) \to D_{s}^{-} π^{+} + c . c .$ and $ψ (2 S) \to D_{s}^{-} ρ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +720

Using the data sample of $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (2 S)$ events collected with the BESIII detector at the center-of-mass energy $s = 3.686 GeV$ , we search for the w…

hep-ex2026

Search for the isospin-violating decays $χ_{cJ} \to Λ Σ ˉ^{0} + c . c .$ and $η_{c} \to Λ Σ ˉ^{0} + c . c .$

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

Using a sample of $(2712.4 \pm 14.3) \times 1 0^{6}$ ~ $ψ (3686)$ events collected with the BESIII detector, we perform a search for the isospin-violating decays $χ_{cJ}\toΛ\barΣ^{0}+c.c.~…

First measurement of ψ(3686)→pˉ​K+Σ∗(1385)0+c.c. and ψ(3686)→pˉ​K∗(892)0Σ++c.c.

Precise Measurement of the Inclusive Cross Sections of Open-Charm Mesons at Energies from 3.80 to 4.95 GeV

Measurement of Born cross sections of e+e−→pK−Σˉ0 + c.c. at s​ = 3.5-4.9 GeV and partial wave analysis at s​ = 3.773 GeV

Amplitude analysis of ψ(3686) radiative decays into π0π0 system

CoFlu-Brain: An fMRI Connectivity Foundation Model with Cofluctuation-Based Pretraining

Determination of U-spin breaking parameters with an amplitude analysis of the decay D0→KS,L0​π+π−

Observation of a Threshold Enhancement in the π0π0 Mass Spectrum in ψ(3686)→π0π0J/ψ Decays

Observation of the electromagnetic Dalitz transition J/ψ→e+e−ηc​

First observation of the electromagnetic Dalitz decay ψ(3686)→μ+μ−η′

Observation of D+→K∗0ρ+ and D+→K∗+ρ0 in Doubly Cabibbo-Suppressed Decay D+→K+π+π−π0

Improved search for ψ(3770)→γηc​(1S,2S) radiative transitions

Observation of η(2600) and Threshold Enhancements in the ΛΛˉ System

Observation of double ssˉ production in e+e− collision at s​=3.08 GeV

Evidence for the semileptonic decay Λc+​→pπ−e+νe​

Search for the doubly Cabibbo-suppressed decays D0→K+π−η′ and D+→K+π0η′

Amplitude Analysis of the Isospin-Violating Decay J/ψ→γηπ0

Search for the radiative decays D0→γKˉ1​(1270)0 and D+→γK1​(1270)+

Search for the charmonium weak decay ψ(2S)→Ds−​π++c.c. and ψ(2S)→Ds−​ρ++c.c.

Search for the isospin-violating decays χcJ​→ΛΣˉ0+c.c. and ηc​→ΛΣˉ0+c.c.

First measurement of $ψ (3686) \to p ˉ K^{+} Σ^{} (1385)^{0} + c . c .$ and $ψ (3686) \to p ˉ K^{} (892)^{0} Σ^{+} + c . c .$

Measurement of Born cross sections of $e^{+} e^{-} \to p K^{-} Σ ˉ^{0}$ + c.c. at $s$ = 3.5-4.9 GeV and partial wave analysis at $s$ = 3.773 GeV

Amplitude analysis of $ψ (3686)$ radiative decays into $π^{0} π^{0}$ system

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

Observation of a Threshold Enhancement in the $π^{0} π^{0}$ Mass Spectrum in $ψ (3686) \to π^{0} π^{0} J / ψ$ Decays

Observation of the electromagnetic Dalitz transition $J / ψ \to e^{+} e^{-} η_{c}$

First observation of the electromagnetic Dalitz decay $ψ (3686) \to μ^{+} μ^{-} η^{'}$

Observation of $D^{+} \to K^{* 0} ρ^{+}$ and $D^{+} \to K^{*+} ρ^{0}$ in Doubly Cabibbo-Suppressed Decay $D^{+} \to K^{+} π^{+} π^{-} π^{0}$

Improved search for $ψ (3770) \to γ η_{c} (1 S, 2 S)$ radiative transitions

Observation of $η (2600)$ and Threshold Enhancements in the $Λ Λ ˉ$ System

Observation of double $s s ˉ$ production in $e^{+} e^{-}$ collision at $s = 3.08 GeV$

Evidence for the semileptonic decay $Λ_{c}^{+} \to p π^{-} e^{+} ν_{e}$

Search for the doubly Cabibbo-suppressed decays $D^{0} \to K^{+} π^{-} η^{'}$ and $D^{+} \to K^{+} π^{0} η^{'}$

Amplitude Analysis of the Isospin-Violating Decay $J / ψ \to γ η π^{0}$

Search for the radiative decays $D^{0} \to γ K ˉ_{1} (1270)^{0}$ and $D^{+} \to γ K_{1} (1270)^{+}$

Search for the charmonium weak decay $ψ (2 S) \to D_{s}^{-} π^{+} + c . c .$ and $ψ (2 S) \to D_{s}^{-} ρ^{+} + c . c .$

Search for the isospin-violating decays $χ_{cJ} \to Λ Σ ˉ^{0} + c . c .$ and $η_{c} \to Λ Σ ˉ^{0} + c . c .$