Zhaoyun Duan
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View article: Influence of invisible light particles on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msub> <mml:mi mathvariant="normal">Λ</mml:mi> <mml:mi>b</mml:mi> </mml:msub> <mml:mo stretchy="false">→</mml:mo> <mml:mi mathvariant="normal">Λ</mml:mi> <mml:msub> <mml:mi>E</mml:mi> <mml:mrow> <mml:mi>miss</mml:mi> </mml:mrow> </mml:msub> </mml:math>
Influence of invisible light particles on Open
In this work, we study the contribution of invisible light particles to Λ b → Λ E miss , particularly the three-body decays Λ b → Λ ϕ ϕ ¯ and Λ b → Λ ψ ψ ¯ . The differential branching ratio of Λ b …
View article: Fostering Rural Innovation and Sustainability with GREENCOOP
Fostering Rural Innovation and Sustainability with GREENCOOP Open
Rural areas cover 83% of EU territory and face critical socio-economic challenges, with nearly 20 million hectares at high risk of abandonment by 2030. This is driven by aging populations, youth outmigration, low social inclusion, and a la…
View article: The Production and Decay Dynamics of the Charmed Baryon $Λ_c^+$ in $e^+e^-$ Annihilations near Threshold
The Production and Decay Dynamics of the Charmed Baryon $Λ_c^+$ in $e^+e^-$ Annihilations near Threshold Open
The study of the charmed baryons is crucial for investigating the strong and weak interactions in the Standard Model and for gaining insights into the internal structure of baryons. In an $e^+e^-$ experiment the lightest charmed baryon, $Λ…
View article: Improved measurement of absolute branching fraction of the inclusive decay $$ {\Lambda}_c^{+}\to {K}_S^0X $$
Improved measurement of absolute branching fraction of the inclusive decay $$ {\Lambda}_c^{+}\to {K}_S^0X $$ Open
View article: Observation of an Altered $a_{0}(980)$ Line-shape in $D^{+} \rightarrow π^{+}ηη$ due to the Triangle Loop Rescattering Effect
Observation of an Altered $a_{0}(980)$ Line-shape in $D^{+} \rightarrow π^{+}ηη$ due to the Triangle Loop Rescattering Effect Open
Using 20.3~${\rm fb}^{-1}$ of $e^{+}e^{-}$ collision data taken with the BESIII detector at the center-of-mass energy 3.773~GeV, we report the first amplitude analysis of the hadronic decay $D^{+} \rightarrow π^{+}ηη$. The intermediate pro…
View article: Identification and validation of poor prognosis immunoevasive subtype of esophageal cancer with tumor-infiltrating SAMD3 + NK cell abundance
Identification and validation of poor prognosis immunoevasive subtype of esophageal cancer with tumor-infiltrating SAMD3 + NK cell abundance Open
Our results demonstrate the predictive significance of NK cell markers in EC and pinpoint SAMD3 as a critical modulator of NK cell activity. We pioneer SAMD3 + NK cells as architects of TME immunosuppression in EC. Our findings nominate SA…
View article: Evidence of doubly OZI-suppressed decay $η_{c} \to ωϕ$ in the radiative decay $J/ψ\to γη_{c}$
Evidence of doubly OZI-suppressed decay $η_{c} \to ωϕ$ in the radiative decay $J/ψ\to γη_{c}$ Open
Using a sample of $(10087\pm44) \times 10^{6}$ $J/ψ$ events collected with the BESIII detector at the BEPCII collider, the first evidence for the doubly OZI-suppressed decay $η_{c} \to ωϕ$ is reported with a significance of 4.0$σ$. The bra…
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
A bstract We report an improved study of the semileptonic decay $$ {D}^0\to {\overline{K}}^0{\pi}^{-}{e}^{+}{\nu}_e $$ based on a sample of 7.9 fb − 1 of e + e − annihilation data collected at a center-of-mass energy of …
View article: Partial-wave analysis 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:mo stretchy="false">→</mml:mo><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi><mml:mi>ϕ</mml:mi></mml:math>
Partial-wave analysis of Open
Using a sample of ∼1010 J/ψ events collected by the BESIII detector at the BEPCII collider, a partial-wave analysis of the decay γγϕ is performed to investigate the intermediate resonances in J/ψ→γR, R→γϕ. Resonances including f1(1285), η…
View article: Measurement of the inclusive cross sections of prompt <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> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3686</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> production in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> annihilation from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>3.808</mml:mn></mml:math> to 4.951 GeV
Measurement of the inclusive cross sections of prompt and production in annihilation from to 4.951 GeV Open
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− annihilation data collected with the BESIII detector operating at the B…
View article: Search for $e^+e^-\to K_S^0 K_S^0 h_c$
Search for $e^+e^-\to K_S^0 K_S^0 h_c$ Open
Using $e^+e^-$ collision data at 13 center-of-mass energies ranging from 4.600 to 4.950 GeV collected with the BESIII detector, we search for the unmeasured $e^+e^-\to K_S^0 K_S^0 h_c$ process . No significant signal is observed, and the u…
Search for and and measurements of and in radiative processes Open
View article: Search for a massless dark photon in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>c</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>u</mml:mi><mml:msup><mml:mrow><mml:mi>γ</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> decays
Search for a massless dark photon in decays Open
Using 7.9fb−1 of e+e− collision data collected at s=3.773 GeV with the BESIII detector at the BEPCII collider, we search for the massless dark photon with the flavor-changing neutral current processes D0→ωγ′ and D0→γγ′ for the first time.…
View article: from Benign import Toxic: Jailbreaking the Language Model via Adversarial Metaphors
from Benign import Toxic: Jailbreaking the Language Model via Adversarial Metaphors Open
Current studies have exposed the risk of Large Language Models (LLMs) generating harmful content by jailbreak attacks. However, they overlook that the direct generation of harmful content from scratch is more difficult than inducing LLM to…
View article: Measurement of Σ+ transverse polarization in e+e− collisions at $$ \sqrt{s} $$ = 3.68 − 3.71 GeV
Measurement of Σ+ transverse polarization in e+e− collisions at $$ \sqrt{s} $$ = 3.68 − 3.71 GeV Open
A bstract 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 pb − 1 , we present an energy-dependent measurement of …
Observation of and evidence for Open
View article: Search for the rare decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>γ</mml:mi><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo>+</mml:mo><mml:mi mathvariant="normal">c</mml:mi><mml:mo>.</mml:mo><mml:mi mathvariant="normal">c</mml:mi><mml:mo>.</mml:mo></mml:mrow></mml:math> at BESIII
Search for the rare decay at BESIII Open
Using (10087±44)×106J/ψ events collected with the BESIII detector, we search for the rare decay J/ψ→γD0+c.c. for the first time. No significant signal is observed and the upper limit on the branching fraction is determined to be B(J/ψ→γD0+…
Resonance Interpreted as the -Wave Dominant State of Charmonium from Precise Measurements of the Cross Section of Open
View article: Observation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mi>J</mml:mi></mml:mrow></mml:msub><mml:mo stretchy="false">→</mml:mo><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover><mml:msubsup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:mo>+</mml:mo><mml:mi mathvariant="normal">c</mml:mi><mml:mo>.</mml:mo><mml:mi mathvariant="normal">c</mml:mi><mml:mo>.</mml:mo></mml:mrow></mml:math>
Observation of Open
By analyzing (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays χcJ→pp¯KS0K−π++c.c. (J=0,1,2) are observed for the first time with statistical significances greater than 10σ. The…
Search for , and decays Open
View article: Measurement of the Inclusive Cross Sections of Prompt $J/ψ$ and $ψ(3686)$ Production in $e^{+}e^{-}$ Annihilation from $\sqrt{s}=3.808$ to $4.951$ GeV
Measurement of the Inclusive Cross Sections of Prompt $J/ψ$ and $ψ(3686)$ Production in $e^{+}e^{-}$ Annihilation from $\sqrt{s}=3.808$ to $4.951$ GeV Open
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 $e^{+}e^{-}$ annihilation data collected with the BESIII detector op…
View article: Search for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>X</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3872</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:msub><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Search for Open
Using 10.1 fb−1 of e+e− collision data collected by the BESIII detector with center-of-mass energies between 4.15 GeV and 4.30 GeV, we search for the decays X(3872)→π0π0χc1,2, where the X(3872) is produced in e+e−→γX(3872). No evidence ab…
View article: Search for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi></mml:math>-even states decaying to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mo>±</mml:mo></mml:msubsup><mml:msubsup><mml:mi>D</mml:mi><mml:mi>s</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mo>∓</mml:mo></mml:mrow></mml:msubsup></mml:math> with masses between 4.08 and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>4.32</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi><mml:mo>/</mml:mo><mml:msup><mml:mi>c</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>
Search for -even states decaying to with masses between 4.08 and Open
Six C-even states, denoted as X, with quantum numbers JPC=0−+, 1±+, or 2±+, are searched for via the e+e−→γDs±Ds*∓ process using (1667.39±8.84) pb−1 of e+e− collision data collected with the BESIII detector operating at the BEPCII storage…
View article: A Symmetrical Quasi-Synchronous Step-Transition Folded Waveguide Slow Wave Structure for 650 GHz Traveling Wave Tubes
A Symmetrical Quasi-Synchronous Step-Transition Folded Waveguide Slow Wave Structure for 650 GHz Traveling Wave Tubes Open
For the purpose of improving performance and reducing the fabrication difficulty of terahertz traveling wave tubes (TWTs), this paper proposes a novel single-section high-gain slow wave structure (SWS), which is named the symmetrical quasi…
View article: Precision measurement of the branching fraction of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> via <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ψ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>2</mml:mn><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>
Precision measurement of the branching fraction of via Open
Using a sample of 448.1×106 ψ(2S) events collected with the BESIII detector, we perform a study of the decay J/ψ→K+K− via ψ(2S)→π+π−J/ψ. The branching fraction of J/ψ→K+K− is determined to be BK+K−=(3.072±0.023(stat)±0.050(syst))×10−4, whi…
View article: Synergistic effect of porous structure and gradient structure in carbon foam to boost terahertz absorption
Synergistic effect of porous structure and gradient structure in carbon foam to boost terahertz absorption Open
View article: Coupled-Channel Analysis of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>3872</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> Line Shape with BESIII Data
Coupled-Channel Analysis of the Line Shape with BESIII Data Open
We perform a study of the χc1(3872) line shape using the data samples of e+e−→γχc1(3872), χc1(3872)→D0D¯0π0, and π+π−J/ψ collected with the BESIII detector. The effects of the coupled channels and the off-shell D*0 are included in the para…
Study of the and Scalar Mesons through the Decay Open
Observation of in the Amplitude Analysis of Open
View article: Design and development of a sheet-beam electron gun with large current for a THz traveling-wave tube
Design and development of a sheet-beam electron gun with large current for a THz traveling-wave tube Open
In this paper, the design, development and experimental investigation on a sheet-beam electron gun with large current for a THz traveling-wave tube (TWT), which can operate typically at 0.22 THz frequency, is reported.The cylindrical catho…