Q. L. Niu

activity

20232025

most citedStudy of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to

Λ h^{+} h^{^{'} -}

and evidence for

C P

violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

19 citations · 82 across the 20 of their papers we have counts for

collaborators

20 papers

hep-ex2025★ 1 cited

Evidence of transverse polarization of $Ξ^{0}$ hyperon in $ψ (3686) \to Ξ^{0} Ξ ˉ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +684

Using $(2.712 \pm 0.014) \times 1 0^{9}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, we report an evidence of $Ξ^{0}$ transverse polarization with a sign…

hep-ex2025

Search for $η_{1} (1855)$ in $χ_{c J} \to η η η^{'}$ decays

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

Based on a sample of $2.7 \times 1 0^{9}$ $ψ (3686)$ events collected by the BESIII detector operating at the BEPCII collider, an analysis of the decay $ψ(3686)\toγχ_{cJ}, χ_{cJ}\toηηη…

hep-ex2025★ 1 cited

Observation of the very rare $Σ^{+} \to p μ^{+} μ^{-}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1131

The first observation of the $Σ^{+} \to p μ^{+} μ^{-}$ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of $5.4\,\rm…

hep-ex2025★ 6 cited

Observation of the doubly-charmed-baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{0} π^{+} π^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A search for the doubly-charmed-baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{0} π^{+} π^{+}$ is performed using proton-proton collision data collected by the LHCb experiment at a c…

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

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

The branching fraction of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$ , relative to the topologically similar decay $B^{+} \to J / ψ ϕ (1020) K^{+}$ , is measured using proton-proton collision data co…

hep-ex2025

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The $\mitΥ(\mathrm{2}S)$ and $\mitΥ(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mitΥ(\mathrm{1}S)$ meson, as a function of charged-particle multi…

hep-ex2025★ 4 cited

Search for charge-parity violation in semileptonically tagged $D^{0} \to K^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

An analysis of the flavour oscillations of the charmed neutral meson is presented. The ratio of $D^{0} \to K^{+} π^{-}$ and $D^{0} \to K^{-} π^{+}$ decay rates is measured as a fun…

hep-ex2024★ 2 cited

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1119

A measurement of the $C P$ -violating parameters in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays is reported, based on the analysis of proton-proton collision data collected by the LHCb expe…

hep-ex2024★ 3 cited

Test of lepton flavour universality with $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The first test of lepton flavor universality between muons and electrons using $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ ( $ℓ = e, μ$ ) decays is presented. The measurement is performed with d…

hep-ex2024★ 5 cited

Search for $D^{0}$ meson decays to $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1130

A search for $D^{0}$ meson decays to the $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a c…

hep-ex2024★ 7 cited

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

An amplitude analysis of $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9\,\text{fb}^…

hep-ex2024★ 19 cited

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{' -}$ $(h^{(')} = π, K)$ is performed using $pp$ collision data collected by the LHCb…

hep-ex2024★ 7 cited

First evidence for direct CP violation in beauty to charmonium decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1131

The $C P$ asymmetry and branching fraction of the CKM-suppressed decay $B^{+} \to J / ψ π^{+}$ are precisely measured relative to the favoured decay $B^+\!\to J\…

hep-ex2024★ 2 cited

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The first measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N} = 68.5$ GeV is presented. The $ϕ (1020)$ mesons are reconstructed in their $K^{+…

hep-ex2024★ 6 cited

First determination of the spin-parity of $Ξ_{c} (3055)^{+, 0}$ baryons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1112

The $Ξ_{b}^{0 (-)} \to Ξ_{c} (3055)^{+ (0)} (\to D^{+ (0)} Λ) π^{-}$ decay chains are observed, and the spin-parity of $Ξ_{c} (3055)^{+ (0)}$ baryons is determined for the first time. The m…

hep-ex2024★ 1 cited

Measurement of $C P$ violation in $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1118

A time-dependent, flavour-tagged measurement of $C P$ violation is performed with $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays, using data…

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-ex2023★ 7 cited

Search for the decay $χ_{c 1} (3872) \to π^{+} π^{-} χ_{c 1}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

Using a data sample corresponding to an integrated luminosity of 10.9 fb $^{- 1}$ collected at center-of-mass energies from 4.16 to 4.34 GeV with the BESIII detector, we search for t…

nucl-ex2023★ 9 cited

First measurement of $Λ N$ inelastic scattering with $Λ$ from $e^{+} e^{-} \to J / ψ \to Λ Λ ˉ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +636

Using an $e^{+} e^{-}$ collision data sample of $(10087 \pm 44) \times 1 0^{6} J / ψ$ events taken at the center-of-mass energy of $3.097 GeV$ by the BESIII detector at the BEPCII colli…

Evidence of transverse polarization of Ξ0 hyperon in ψ(3686)→Ξ0Ξˉ0

Search for η1​(1855) in χcJ​→ηηη′ decays

Observation of the very rare Σ+→pμ+μ− decay

Observation of the doubly-charmed-baryon decay Ξcc++​→Ξc0​π+π+

Observation of the decay ψ(3686)→Σ0Σˉ0ω

Branching fraction measurement of the decay B+→ψ(2S)ϕ(1020)K+

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in pp collisions at s​=13 TeV

Search for charge-parity violation in semileptonically tagged D0→K+π− decays

Measurement of CP asymmetry in Bs0​→Ds∓​K± decays

Test of lepton flavour universality with B+→K+π+π−ℓ+ℓ− decays

Search for D0 meson decays to π+π−e+e− and K+K−e+e− final states

Observation of the open-charm tetraquark candidate Tcs0∗​(2870)0 in the B−→D−D0KS0​ decay

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to Λh+h′− and evidence for CP violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

First evidence for direct CP violation in beauty to charmonium decays

Measurement of ϕ(1020) meson production in fixed-target pNe collisions at sNN​​ = 68.5 GeV

First determination of the spin-parity of Ξc​(3055)+,0 baryons

Measurement of CP violation in B0→D+D− and Bs0​→Ds+​Ds−​ decays

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

Search for the decay χc1​(3872)→π+π−χc1​

First measurement of ΛN inelastic scattering with Λ from e+e−→J/ψ→ΛΛˉ

Evidence of transverse polarization of $Ξ^{0}$ hyperon in $ψ (3686) \to Ξ^{0} Ξ ˉ^{0}$

Search for $η_{1} (1855)$ in $χ_{c J} \to η η η^{'}$ decays

Observation of the very rare $Σ^{+} \to p μ^{+} μ^{-}$ decay

Observation of the doubly-charmed-baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{0} π^{+} π^{+}$

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

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

Search for charge-parity violation in semileptonically tagged $D^{0} \to K^{+} π^{-}$ decays

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

Test of lepton flavour universality with $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ decays

Search for $D^{0}$ meson decays to $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

Study of $\itΛ_{\it{b}}^\rm{0}$ and $\itΞ_{\it{b}}^\rm{0}$ decays to $Λ h^{+} h^{^{'} -}$ and evidence for $C P$ violation in $\itΛ_{\it{b}}^\rm{0}\to\itΛ K^+K^-$ decays

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

First determination of the spin-parity of $Ξ_{c} (3055)^{+, 0}$ baryons

Measurement of $C P$ violation in $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays

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

Search for the decay $χ_{c 1} (3872) \to π^{+} π^{-} χ_{c 1}$

First measurement of $Λ N$ inelastic scattering with $Λ$ from $e^{+} e^{-} \to J / ψ \to Λ Λ ˉ$