F. De Mori
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View article: Study of the reactions $\bar{n} p \to 2π^{+}π^{-}$, $2π^{+}π^{-}π^{0}$, and $2π^{+}π^{-}2π^{0}$ using $J/ψ\to p π^{-}\bar{n}$
Study of the reactions $\bar{n} p \to 2π^{+}π^{-}$, $2π^{+}π^{-}π^{0}$, and $2π^{+}π^{-}2π^{0}$ using $J/ψ\to p π^{-}\bar{n}$ Open
We report an experimental investigation of the reactions $\bar{n} p \to 2π^{+}π^{-}$, $\bar{n} p \to 2π^{+}π^{-}π^{0}$, and $\bar{n} p \to 2π^{+}π^{-}2π^{0}$ using $(10.087 \pm 0.044) \times 10^{9}$ $J/ψ$ events collected with the BESIII d…
Measurements of the cross sections of and near kinematic thresholds Open
View article: Measurement of the Born cross section for $$ {e}^{+}{e}^{-}\to p{K}^{-}{K}^{-}{\overline{\Xi}}^{+} $$ at $$ \sqrt{s}=3.5\hbox{--} 4.9 $$ GeV
Measurement of the Born cross section for $$ {e}^{+}{e}^{-}\to p{K}^{-}{K}^{-}{\overline{\Xi}}^{+} $$ at $$ \sqrt{s}=3.5\hbox{--} 4.9 $$ GeV Open
View article: Measurement of the phase between strong and electromagnetic amplitudes in the decay J/ψ → ϕη
Measurement of the phase between strong and electromagnetic amplitudes in the decay J/ψ → ϕη Open
A bstract The first direct measurement of the relative phase between the strong and electromagnetic amplitudes for a J/ψ decaying into a vector-pseudoscalar final state is performed using 26 energy points of e + e − annihilation data betwe…
View article: Measurement of branching fractions of $$ {\Lambda}_c^{+} $$ decays to Σ+η and Σ+η′
Measurement of branching fractions of $$ {\Lambda}_c^{+} $$ decays to Σ+η and Σ+η′ Open
Observation of , Test of Lepton Flavor Universality, and First Angular Analysis of Open
View article: Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D+ → K+π0, D+ → K+η and D+ → K+η′
Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D+ → K+π0, D+ → K+η and D+ → K+η′ Open
A bstract Using 20.3 fb − 1 of e + e − collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we present the measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D + →…
View article: First measurement of the cross sections for $e^{+}e^{-}\to K^{0}K^{-}π^{+}J/ψ+c.c.$ at $\sqrt{s}$ from 4.396 to 4.951 GeV
First measurement of the cross sections for $e^{+}e^{-}\to K^{0}K^{-}π^{+}J/ψ+c.c.$ at $\sqrt{s}$ from 4.396 to 4.951 GeV Open
Using $e^+e^-$ collision data at 19 center-of-mass energies ranging from $4.396$ to $4.951~\mathrm{GeV}$ corresponding to a total integrated luminosity of $8.86~{\rm fb}^{-1}$ collected by the BESIII detector, the process $e^+e^-\to K^{0}K…
View article: Observation of $$ {\chi}_{cJ}\left(J=0,1,2\right)\to p\overline{p}\eta \eta $$
Observation of $$ {\chi}_{cJ}\left(J=0,1,2\right)\to p\overline{p}\eta \eta $$ Open
A bstract Using (2712 . 4 ± 14 . 3) × 10 6 ψ (3686) candidates collected by the BESIII detector operating at the BEPCII storage ring, the decays $$ {\chi}_{cJ}\left(J=0,1,2\right)\to p\overline{p}\eta \eta $$ are observed …
View article: Search for Sub-GeV Invisible Particles in Inclusive Decays of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math> to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ϕ</mml:mi></mml:math>
Search for Sub-GeV Invisible Particles in Inclusive Decays of to Open
A search for an invisible particle, X, with a mass between 0 and 0.96 GeV/c2, is performed in the process J/ψ→ϕ+X using (8774.0±39.4)×106 J/ψ events collected with the BESIII detector from 2017 to 2019. The ϕ meson is fully reconstructed…
View article: Amplitude analysis of $$ \psi (3686)\to \gamma {K}_S^0{K}_S^0 $$
Amplitude analysis of $$ \psi (3686)\to \gamma {K}_S^0{K}_S^0 $$ Open
A bstract Using (2712 ± 14) × 10 6 ψ (3686) events collected with the BESIII detector, we perform the first amplitude analysis of the radiative decay $$ \psi (3686)\to \gamma {K}_S^0{K}_S^0 $$ within the mass region $$ {M}_{K…
View article: First Measurement of the $D_s^+\rightarrow K^0μ^+ν_μ$ Decay
First Measurement of the $D_s^+\rightarrow K^0μ^+ν_μ$ Decay Open
We report the first measurement of the semileptonic decay $D^+_s \rightarrow K^0μ^+ν_μ$, using a sample of $e^+e^-$ annihilation data corresponding to an integrated luminosity of $7.33~\mathrm{fb}^{-1}$ collected at center-of-mass energies…
View article: Observation of a resonance-like structure near the $π^+π^-$ mass threshold in $ψ(3686) \rightarrow π^{+}π^{-}J/ψ$
Observation of a resonance-like structure near the $π^+π^-$ mass threshold in $ψ(3686) \rightarrow π^{+}π^{-}J/ψ$ Open
Based on the $(2712.4\pm14.4)\times 10^{6}$ $ψ(3686)$ events collected with the BESIII detector, we present a high-precision study of the $π^+π^-$ mass spectrum in $ψ(3686)\rightarrowπ^{+}π^{-}J/ψ$ decays. A clear resonance-like structure …
View article: Observation of transverse polarization and determination of psionic form factors of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Λ</mml:mi></mml:math> hyperon at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>3.773</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:mrow></mml:math>
Observation of transverse polarization and determination of psionic form factors of the hyperon at Open
Using a data sample of e+e− collision data corresponding to an integrated luminosity of 20.3 fb−1 collected by the BESIII detector at the BEPCII collider, we present an observation of transverse polarization and a complete determination o…
View article: First Observation of $Λ$ Hyperon Transverse Polarization in $ψ(3686)\toΛ\barΛ$
First Observation of $Λ$ Hyperon Transverse Polarization in $ψ(3686)\toΛ\barΛ$ Open
Based on $(448.1\pm2.9)\times10^{6}$ $ψ(3686)$ events collected with the BESIII detector at the BEPCII collider, we present the first observation of spin transverse polarization of $Λ$ and $\barΛ$ hyperons produced coherently in the decay …
View article: Observation of the electromagnetic radiative decays of the \boldmath{$Λ(1520)$} and \boldmath{$Λ(1670)$} to \boldmath{$γΣ^0$}
Observation of the electromagnetic radiative decays of the \boldmath{$Λ(1520)$} and \boldmath{$Λ(1670)$} to \boldmath{$γΣ^0$} Open
Using $(10087\pm 44)\times10^6$ $J/ψ$ events collected with the BESIII detector, we report the first observation of the electromagnetic radiative decays of the $Λ(1520)$ and $Λ(1670)$ to $γΣ^0$, with a statistical significance of $16.6σ$ a…
View article: Measurement of the branching fractions of doubly Cabibbo-suppressed D decays
Measurement of the branching fractions of doubly Cabibbo-suppressed D decays Open
A bstract 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 measure the branching fractions of the doubly Cabibbo…
View article: Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays $D^+\to K^+π^0$, $D^+\to K^+η$ and $D^+\to K^+η^{\prime}$
Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays $D^+\to K^+π^0$, $D^+\to K^+η$ and $D^+\to K^+η^{\prime}$ Open
Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773\,GeV with the BESIII detector, we present the measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays $D^+\…
View article: First measurement of $Σ^{+}n\rightarrowΛp$ and $Σ^{+}n\rightarrowΣ^{0}p$ cross-sections via $Σ^+$-nucleus scattering at an electron-positron collider
First measurement of $Σ^{+}n\rightarrowΛp$ and $Σ^{+}n\rightarrowΣ^{0}p$ cross-sections via $Σ^+$-nucleus scattering at an electron-positron collider Open
Using $(1.0087\pm0.0044)\times10^{10}$ $J/ψ$ events collected with the BESIII detector at the BEPCII storage ring, the reactions $Σ^{+}n\rightarrowΛp$ and $Σ^{+}n\rightarrowΣ^{0}p$ are studied, where the $Σ^{+}$ baryon is produced in the p…
View article: Partial Wave Analysis of $e^{+}e^{-} \rightarrow π^{+}π^{-}J/ψ$ and Cross Section Measurement of $e^{+}e^{-} \rightarrow π^{\pm}Z_{c}(3900)^{\mp}$ from 4.1271 to 4.3583 GeV
Partial Wave Analysis of $e^{+}e^{-} \rightarrow π^{+}π^{-}J/ψ$ and Cross Section Measurement of $e^{+}e^{-} \rightarrow π^{\pm}Z_{c}(3900)^{\mp}$ from 4.1271 to 4.3583 GeV Open
Based on 12.0 $\mathrm{fb^{-1}}$ of $e^{+}e^{-}$ collision data samples collected by the BESIII detector at center-of-mass energies from 4.1271 to 4.3583 GeV, a partial wave analysis is performed for the process $e^{+}e^{-} \rightarrow π^{…
View article: Observation of $χ_{cJ}(J=0,1,2)\rightarrow p\bar{p}ηη$
Observation of $χ_{cJ}(J=0,1,2)\rightarrow p\bar{p}ηη$ Open
Using $(2712.4\pm14.3)\times10^6$ $ψ(3686)$ events collected by the BESIII detector operating at the BEPCII storage ring, the decays $χ_{cJ}(J=0,1,2)\rightarrow p\bar{p}ηη$ are observed for the first time through the radiative transition $…
View article: Observation of $ψ(3686) \to Ξ^- K^0_S \barΩ^+ $+c.c
Observation of $ψ(3686) \to Ξ^- K^0_S \barΩ^+ $+c.c Open
Using a sample of $(2.712\pm0.014) \times 10^{9}$ $ψ(3686)$ events collected with the BESIII detector at the electron positron collider BEPCII, the decay $ψ(3686) \to Ξ^- K^0_S \barΩ^+ +c.c.$ is observed for the first time, which has a sig…
View article: Updated model-independent measurement of the strong-phase differences between $D^0$ and $\bar{D}^0 \to K^{0}_{S/L}π^+π^-$ decays
Updated model-independent measurement of the strong-phase differences between $D^0$ and $\bar{D}^0 \to K^{0}_{S/L}π^+π^-$ decays Open
The strong-phase differences between $D^0\to K_{S/L}^0π^+π^-$ and $\bar{D}^0\to K_{S/L}^0π^+π^-$ decays are one of the most important inputs in measuring the $C\!P$ violating angle $γ$ via $B^- \to D K^-$ decays. They also play a key role …
View article: First observation of $Λ_{c}(2595)^{+} \to Λ^{+}_{c}π^0π^0$ and $Λ_{c}(2625)^{+}\to Λ^{+}_{c}π^0π^0$
First observation of $Λ_{c}(2595)^{+} \to Λ^{+}_{c}π^0π^0$ and $Λ_{c}(2625)^{+}\to Λ^{+}_{c}π^0π^0$ Open
By analysing $e^+e^-$ annihilation data corresponding to an integrated luminosity of 368.48~pb$^{-1}$ collected at the centre-of-mass energies of $\sqrt{s} = 4.918$ and $4.951$~GeV with the BESIII detector, we report the first observation …
View article: Study of the semileptonic decay $$ {D}^0\to {\overline{K}}^0{\pi}^{-}{e}^{+}{\nu}_e $$
Study of the semileptonic decay $$ {D}^0\to {\overline{K}}^0{\pi}^{-}{e}^{+}{\nu}_e $$ Open
View article: Observation of $$ \psi (3686)\to {K}^{-}\Lambda (1520){\overline{\Xi}}^{+} $$ + c.c.
Observation of $$ \psi (3686)\to {K}^{-}\Lambda (1520){\overline{\Xi}}^{+} $$ + c.c. Open
View article: Single Inclusive $π^\pm$ and $K^\pm$ Production in $e^+e^-$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV
Single Inclusive $π^\pm$ and $K^\pm$ Production in $e^+e^-$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV Open
Using data samples with a total integrated luminosity of 253 $\rm pb^{-1}$ collected by the BESIII detector operating at the BEPCII collider, the differential cross-sections of inclusive $π^\pm$ and $K^\pm$ production, as a function of mom…
View article: Amplitude analysis of $ψ(3686)\to γK_S^0 K_S^0 $
Amplitude analysis of $ψ(3686)\to γK_S^0 K_S^0 $ Open
Using $(2712\pm14)\times10^6$ $ψ(3686)$ events collected with the BESIII detector, we perform the first amplitude analysis of the radiative decay $ψ(3686)\to γK_S^0 K_S^0$ within the mass region $M_{K_S^0 K_S^0 }<2.8$ GeV/$c^2$. Employing …
View article: Measurement of cross sections of $$ {e}^{+}{e}^{-}\to {K}_S^0{K}_S^0\psi (3686) $$ from $$ \sqrt{s} $$ = 4.682 to 4.951 GeV
Measurement of cross sections of $$ {e}^{+}{e}^{-}\to {K}_S^0{K}_S^0\psi (3686) $$ from $$ \sqrt{s} $$ = 4.682 to 4.951 GeV Open
View article: Search for the Cabibbo-suppressed decays $Λ_c^{+}\toΣ^0K^{+}π^{0}$ and $Λ_c^{+}\toΣ^0K^{+}π^{+}π^{-}$
Search for the Cabibbo-suppressed decays $Λ_c^{+}\toΣ^0K^{+}π^{0}$ and $Λ_c^{+}\toΣ^0K^{+}π^{+}π^{-}$ Open
Utilizing 4.5 $fb^-$ of $e^+e^-$ annihilation data collected at center-of-mass energies ranging from 4599.53 MeV to 4698.82 MeV by the BESIII detector at the BEPCII collider, we search for the singly Cabibbo-suppressed hadronic decays $Λ_{…