Lei Zhao

activity

20122025

e^{+} e^{-} \to π^{+} π^{-}

Cross Section between 600 and 900 MeV Using Initial State Radiation

253 citations · 424 across the 26 of their papers we have counts for

collaborators

26 papers

hep-ex2025★ 7 cited

Test of local realism via entangled $Λ Λ ˉ$ system

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

The non-locality of quantum correlations is a fundamental feature of quantum theory. The Bell inequality serves as a benchmark for distinguishing between predictions made by quantu…

hep-ex2025

Search for the baryon and lepton number violating decay $J / ψ \to p e^{-}$ + c.c

BESIII Collaboration, M. Ablikim, M. N. Achasov +667

Based on $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII storage ring, we perform a search for the baryon- and lepton-…

hep-ex2025

Measurement of the branching fractions of doubly Cabibbo-suppressed $D$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +653

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

hep-ex2025

Observation of the decay $ψ (3686) \to Σ^{0} Σ ˉ^{0} ω$

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

Using a dataset of $(27.12 \pm 0.14) \times 1 0^{8}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay $…

hep-ex2025★ 1 cited

Study of $η \to π^{+} π^{-} l^{+} l^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +639

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events accumulated with the BESIII detector, we analyze the decays $η \to π^{+} π^{-} l^{+} l^{-}$ ( $l = e$ or $μ$ ) via the process $J/ψ…

hep-ex2024★ 3 cited

Measurement of Born cross section of $e^{+} e^{-} \to Σ^{0} Σ ˉ^{0}$ at $s = 3.50 - 4.95$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +654

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at the BEPCII collider at thirty-two center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated…

hep-ex2024★ 5 cited

Observation of the charmonium decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +662

Using $(2712.4 \pm 14.3) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, the decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$ is observed. We determine the p…

hep-ex2024

Measurement of the Inclusive Cross Sections of Prompt $J / ψ$ and $ψ (3686)$ Production in $e^{+} e^{-}$ Annihilation from $s = 3.808$ to $4.951$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +610

The inclusive cross sections of prompt $J / ψ$ and $ψ (3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb $^{- 1}$ of $e^{+}e^{…

hep-ex2024★ 8 cited

Evidence for Two Excited $Ω^{-}$ Hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +655

Using $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of 19,fb $^{- 1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70,GeV, w…

hep-ex2024★ 4 cited

Measurement of the branching fractions of the decays $Λ_{c}^{+} \to Λ K_{S}^{0} K^{+}$ , $Λ_{c}^{+} \to Λ K_{S}^{0} π^{+}$ and $Λ_{c}^{+} \to Λ K^{*+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

Studies are performed of the Cabibbo-favored decay $Λ_{c}^{+} \to Λ K_{S}^{0} K^{+}$ and the singly Cabibbo-suppressed decay $Λ_{c}^{+} \to Λ K_{S}^{0} π^{+}$ , based on a sample of $e^{+}e^{-}…

hep-ex2024★ 3 cited

Observation of the Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to p π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

Utilizing 4.5 $fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 4.600 and 4.699 GeV, the f…

hep-ex2024★ 13 cited

Observation of a rare beta decay of the charmed baryon with a Graph Neural Network

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

The beta decay of the lightest charmed baryon $Λ_{c}^{+}$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for inve…

hep-ex2024★ 3 cited

Measurement of $Σ^{+}$ transverse polarization in $e^{+} e^{-}$ collisions at $s = 3.68 - 3.71$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

Using $e^{+} e^{-}$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1~{\rm p…

hep-ex2024★ 20 cited

Strong and weak $C P$ tests in sequential decays of polarized $Σ^{0}$ hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

The $J / ψ, ψ (3686) \to Σ^{0} Σ ˉ^{0}$ processes and subsequent decays are studied using the world's largest $J / ψ$ and $ψ (3686)$ data samples collected with the BESIII detector. The…

hep-ex2024★ 5 cited

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

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

Based on $10.64 fb^{- 1}$ of $e^{+} e^{-}$ collision data taken at center-of-mass energies between 4.237 and 4.699 GeV with the BESIII detector, we study the leptonic $D_{s}^{+}$ de…

hep-ex2024★ 6 cited

Improved measurement of the semileptonic decay $D_{s}^{+} \to K^{0} e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

Analyzing $e^{+} e^{-}$ collision data corresponding to an integrated luminosity of $7.33 fb^{- 1}$ collected at center-of-mass energies between 4.128 and 4.226~GeV with the BES…

hep-ex2024

Search for $X (1870)$ via the decay $J / ψ \to ω K^{+} K^{-} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +649

Using a sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected by the BESIII detector at the BEPCII collider, we search for the decay $X (1870) \to K^{+} K^{-} η$ via the $J/ψ\to ωK…

hep-ex2024

Search for the $e^{+} e^{-} \to ϕ χ_{c 1} (3872)$ process at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

Based on 368.5 pb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies 4.914 and 4.946 GeV by the BESIII detector, the $e^{+} e^{-} \to ϕ χ_{c 1} (3872)$ process is searc…

hep-ex2024★ 3 cited

Search for the radiative transition $χ_{c 1} (3872) \to γ ψ_{2} (3823)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

Using 9.0 $f b^{- 1}$ of $e^{+} e^{-}$ collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the firs…

hep-ex2024★ 2 cited

Cross section measurement of $e^{+} e^{-} \to η ψ (2 S)$ and search for $e^{+} e^{-} \to η X ~ (3872)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

The energy-dependent cross section for $e^{+} e^{-} \to η ψ (2 S)$ is measured at eighteen center of mass energies from 4.288 GeV to 4.951 GeV using the BESIII detector. Using the same data…

hep-ex2024★ 5 cited

Test of lepton universality and measurement of the form factors of $D^{0} \to K^{*} (892)^{-} μ^{+} ν_{μ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

We report a first study of the semileptonic decay $D^{0} \to K^{-} π^{0} μ^{+} ν_{μ}$ by analyzing an $e^{+} e^{-}$ annihilation data sample of $7.9 fb^{- 1}$ collected at the cente…

hep-ex2024★ 3 cited

$R (3780)$ Resonance Interpreted as the $1^{3} D_{1}$ -Wave Dominant State of Charmonium from Precise Measurements of the Cross Section of $e^{+} e^{-} \to$ Hadrons

M. Ablikim, M. N. Achasov, P. Adlarson +606

We report the precise measurements of the cross section of $e^{+} e^{-} \to$ hadrons at center-of-mass energies from 3.645 to 3.871 GeV. We thereby perform the most precise study…

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-ex2017★ 20 cited

Measurements of the branching fractions for the semi-leptonic decays $D_{s}^{+} \to ϕ e^{+} ν_{e}$ , $ϕ μ^{+} ν_{μ}$ , $η μ^{+} ν_{μ}$ and $η^{'} μ^{+} ν_{μ}$

M. Ablikim, M. N. Achasov, S. Ahmed +439

By analyzing 482 pb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at the center-of-mass energy $s = 4.009$ GeV with the BESIII detector, we measure the %absolute branching fracti…

Test of local realism via entangled ΛΛˉ system

Search for the baryon and lepton number violating decay J/ψ→pe− + c.c

Measurement of the branching fractions of doubly Cabibbo-suppressed D decays

Observation of the decay ψ(3686)→Σ0Σˉ0ω

Study of η→π+π−l+l−

Measurement of Born cross section of e+e−→Σ0Σˉ0 at s​=3.50−4.95 GeV

Observation of the charmonium decay ηc​→γγ in J/ψ→γηc​

Measurement of the Inclusive Cross Sections of Prompt J/ψ and ψ(3686) Production in e+e− Annihilation from s​=3.808 to 4.951 GeV

Evidence for Two Excited Ω− Hyperons

Measurement of the branching fractions of the decays Λc+​→ΛKS0​K+, Λc+​→ΛKS0​π+ and Λc+​→ΛK∗+

Observation of the Singly Cabibbo-Suppressed Decay Λc+​→pπ0

Observation of a rare beta decay of the charmed baryon with a Graph Neural Network

Measurement of Σ+ transverse polarization in e+e− collisions at s​=3.68−3.71 GeV

Strong and weak CP tests in sequential decays of polarized Σ0 hyperons

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

Improved measurement of the semileptonic decay Ds+​→K0e+νe​

Search for X(1870) via the decay J/ψ→ωK+K−η

Search for the e+e−→ϕχc1​(3872) process at BESIII

Search for the radiative transition χc1​(3872)→γψ2​(3823)

Cross section measurement of e+e−→ηψ(2S) and search for e+e−→ηX~(3872)

Test of lepton universality and measurement of the form factors of D0→K∗(892)−μ+νμ​

R(3780) Resonance Interpreted as the 13D1​-Wave Dominant State of Charmonium from Precise Measurements of the Cross Section of e+e−→ Hadrons

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

Measurements of the branching fractions for the semi-leptonic decays Ds+​→ϕe+νe​, ϕμ+νμ​, ημ+νμ​ and η′μ+νμ​

Test of local realism via entangled $Λ Λ ˉ$ system

Search for the baryon and lepton number violating decay $J / ψ \to p e^{-}$ + c.c

Measurement of the branching fractions of doubly Cabibbo-suppressed $D$ decays

Observation of the decay $ψ (3686) \to Σ^{0} Σ ˉ^{0} ω$

Study of $η \to π^{+} π^{-} l^{+} l^{-}$

Measurement of Born cross section of $e^{+} e^{-} \to Σ^{0} Σ ˉ^{0}$ at $s = 3.50 - 4.95$ GeV

Observation of the charmonium decay $η_{c} \to γ γ$ in $J / ψ \to γ η_{c}$

Measurement of the Inclusive Cross Sections of Prompt $J / ψ$ and $ψ (3686)$ Production in $e^{+} e^{-}$ Annihilation from $s = 3.808$ to $4.951$ GeV

Evidence for Two Excited $Ω^{-}$ Hyperons

Measurement of the branching fractions of the decays $Λ_{c}^{+} \to Λ K_{S}^{0} K^{+}$ , $Λ_{c}^{+} \to Λ K_{S}^{0} π^{+}$ and $Λ_{c}^{+} \to Λ K^{*+}$

Observation of the Singly Cabibbo-Suppressed Decay $Λ_{c}^{+} \to p π^{0}$

Measurement of $Σ^{+}$ transverse polarization in $e^{+} e^{-}$ collisions at $s = 3.68 - 3.71$ GeV

Strong and weak $C P$ tests in sequential decays of polarized $Σ^{0}$ hyperons

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

Improved measurement of the semileptonic decay $D_{s}^{+} \to K^{0} e^{+} ν_{e}$

Search for $X (1870)$ via the decay $J / ψ \to ω K^{+} K^{-} η$

Search for the $e^{+} e^{-} \to ϕ χ_{c 1} (3872)$ process at BESIII

Search for the radiative transition $χ_{c 1} (3872) \to γ ψ_{2} (3823)$

Cross section measurement of $e^{+} e^{-} \to η ψ (2 S)$ and search for $e^{+} e^{-} \to η X ~ (3872)$

Test of lepton universality and measurement of the form factors of $D^{0} \to K^{*} (892)^{-} μ^{+} ν_{μ}$

$R (3780)$ Resonance Interpreted as the $1^{3} D_{1}$ -Wave Dominant State of Charmonium from Precise Measurements of the Cross Section of $e^{+} e^{-} \to$ Hadrons

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

Measurements of the branching fractions for the semi-leptonic decays $D_{s}^{+} \to ϕ e^{+} ν_{e}$ , $ϕ μ^{+} ν_{μ}$ , $η μ^{+} ν_{μ}$ and $η^{'} μ^{+} ν_{μ}$