Q. Ji

activity

20152023

most citedObservation of the Dalitz Decay

η^{'} \to γ e^{+} e^{-}

61 citations · 193 across the 12 of their papers we have counts for

collaborators

11 papers

hep-ex2023★ 1 cited

Measurement of the Ratio of Partial Branching Fractions of Inclusive $B \to X_{u} ℓ ν$ to $B \to X_{c} ℓ ν$ and the Ratio of their Spectra with Hadronic Tagging

Belle Collaboration, M. Hohmann, P. Urquijo +157

We present a measurement of the ratio of partial branching fractions of the semi-leptonic inclusive decays, $B \to X_{u} ℓ ν$ to $\overline{B} \to X_{c} \ell…

hep-ex2023

Helicity amplitude analysis of $χ_{c J} \to ϕϕ$

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

Using (447.9 $\pm$ 2.3) million $ψ$ (3686) events collected with the BESIII detector, the decays of $χ_{c J} \to ϕϕ$ ( $J$ =0, 1, 2) have been studied via the decay $ψ(3686)\ri…

hep-ex2022

Observation of $ψ (3770) \to η J / ψ$

BESIII Collaboration

The Born cross section of the process $e^{+} e^{-} \to η J / ψ$ at a center-of-mass energy $s = 3.773 GeV$ is measured to be ( $8.89 \pm 0.88 \pm 0.42$ ) $pb$ , using a data…

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★ 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★ 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★ 21 cited

Partial wave analysis of $J / ψ \to γ η^{'} η^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +511

Using a sample of $(10.09 \pm 0.04) \times 1 0^{9} J / ψ$ events collected with the BESIII detector, a partial wave analysis of $J / ψ \to γ η^{'} η^{'}$ is performed. The masses a…

hep-ex2021★ 3 cited

Observation of the electromagnetic Dalitz decay $D^{* 0} \to D^{0} e^{+} e^{-}$

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

Based on 3.19 fb $^{- 1}$ of $e^{+} e^{-}$ collision data accumulated at the center-of-mass energy 4.178 GeV with the BESIII detector operating at the BEPCII collider, the electromagnetic…

hep-ex2019★ 7 cited

Study of electromagnetic Dalitz decays $χ_{c J} \to μ^{+} μ^{-} J / ψ$

M. Ablikim, M. N. Achasov, S. Ahmed +449

Using $4.48 \times 1 0^{8}$ $ψ (3686)$ events collected with the BESIII detector, we search for the decays $χ_{c J} \to μ^{+} μ^{-} J / ψ$ through the radiative decays $ψ(3686) \r…

hep-ex2017★ 22 cited

Measurement of the matrix elements for the decays $η^{'} \to η π^{+} π^{-}$ and $η^{'} \to η π^{0} π^{0}$

M. Ablikim, M. N. Achasov, S. Ahmed +436

Based on a sample of $1.31 \times 1 0^{9}$ $J / ψ$ events collected with the BESIII detector, the matrix elements for the decays $η^{'} \to η π^{+} π^{-}$ and $η^{'} \to η π^{0} π^{0}$ …

hep-ex2015★ 61 cited

Observation of the Dalitz Decay $η^{'} \to γ e^{+} e^{-}$

M. Ablikim, M. N. Achasov, X. C. Ai +410

We report the first observation of the Dalitz decay $η^{'} \to γ e^{+} e^{-}$ , based on a data sample of 1.31 billion $J / ψ$ events collected with the BESIII detector. The $η^{'}$ mesons are pr…

Measurement of the Ratio of Partial Branching Fractions of Inclusive B→Xu​ℓν to B→Xc​ℓν and the Ratio of their Spectra with Hadronic Tagging

Helicity amplitude analysis of χcJ​→ϕϕ

Observation of ψ(3770)→ηJ/ψ

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

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

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

Partial wave analysis of J/ψ→γη′η′

Observation of the electromagnetic Dalitz decay D∗0→D0e+e−

Study of electromagnetic Dalitz decays χcJ​→μ+μ−J/ψ

Measurement of the matrix elements for the decays η′→ηπ+π− and η′→ηπ0π0

Observation of the Dalitz Decay η′→γe+e−