T. Chang

collaborators

24 papers

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

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 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

Measurement of CP Asymmetry Parameters and Polarization Correlations in $Ω^{-} Ω ˉ^{+}$ Pairs

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

Using $(2.71 \pm 0.01) \times 1 0^{9}$ $ψ (3686)$ events collected with the BESIII detector, a joint full angular distribution analysis is carried out for the process $ψ(3686) \to Ω^-(…

hep-ex2026

Measurement of inelastic scattering $Λ (Λ) + p \to Σ^{0} (Σ^{0}) + p$ via $e^{+} e^{-} \to J / ψ \to Λ Λ$

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

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we investigate the inelastic scattering processes $Λ + p \to Σ^{0} + p$ and $\overlineΛ+p\to…

hep-ex2026

Search for the baryonic decay $D_{s}^{*+} \to p n ˉ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +768

The first search for the baryonic decay $D_{s}^{*+} \to p n ˉ$ is performed using $e^{+} e^{-}$ collision data taken at center-of-mass energies between 4.128 and 4.226 GeV, coll…

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

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

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

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

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

Measurement of Born Cross Sections for $e^{+} e^{-} \to K^{+} Ξ^{0} Σ ˉ^{-}$ at $s = 3.51 - 4.95$ GeV and Observation of $ψ (3770) \to K^{+} Ξ^{0} Σ ˉ^{-}$

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

Using 44.55 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector at the BEPCII collider, we report the first measurement of the Born cross sections for the $e^+e^-…

hep-ex2026

Observation of $η_{c} (1 S) \to Σ^{0} Σ ˉ^{0}$ and search for $h_{c} (1 P) \to Σ^{0} Σ ˉ^{0}$ via $ψ (3686)$ transitions

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

Using $(2712.4 \pm 14.3) \times 1 0^{6} ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, the hadronic decay $η_{c} \to Σ^{0} Σ^{0} ˉ$ is observed fo…

hep-ex2026

Observation of the $X (2370)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ and $J / ψ \to γ π^{0} π^{0} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +769

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, the $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ and $J / ψ \to γ π^{0} π^{0} η$ processes are stu…

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′

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

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

Measurement of CP Asymmetry Parameters and Polarization Correlations in Ω−Ωˉ+ Pairs

Measurement of inelastic scattering Λ(Λ)+p→Σ0(Σ0)+p via e+e−→J/ψ→ΛΛ

Search for the baryonic decay Ds∗+​→ pnˉ

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

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

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)

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

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

Measurement of Born Cross Sections for e+e−→K+Ξ0Σˉ− at s​=3.51−4.95 GeV and Observation of ψ(3770)→K+Ξ0Σˉ−

Observation of ηc​(1S)→Σ0Σˉ0 and search for hc​(1P)→Σ0Σˉ0 via ψ(3686) transitions

Observation of the X(2370) in J/ψ→γKS0​KS0​π0 and J/ψ→γπ0π0η

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 $ψ (3686) \to μ^{+} μ^{-} η^{'}$

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

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

Measurement of CP Asymmetry Parameters and Polarization Correlations in $Ω^{-} Ω ˉ^{+}$ Pairs

Measurement of inelastic scattering $Λ (Λ) + p \to Σ^{0} (Σ^{0}) + p$ via $e^{+} e^{-} \to J / ψ \to Λ Λ$

Search for the baryonic decay $D_{s}^{*+} \to p n ˉ$

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 $ψ (3686) \to Σ^{0} Σ ˉ^{0} η$

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

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 $D^{+} \to π^{0} ℓ^{+} ν_{ℓ}$ ( $ℓ = e, μ$ )

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

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

Measurement of Born Cross Sections for $e^{+} e^{-} \to K^{+} Ξ^{0} Σ ˉ^{-}$ at $s = 3.51 - 4.95$ GeV and Observation of $ψ (3770) \to K^{+} Ξ^{0} Σ ˉ^{-}$

Observation of $η_{c} (1 S) \to Σ^{0} Σ ˉ^{0}$ and search for $h_{c} (1 P) \to Σ^{0} Σ ˉ^{0}$ via $ψ (3686)$ transitions

Observation of the $X (2370)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} π^{0}$ and $J / ψ \to γ π^{0} π^{0} η$