A. G. Denig
A5070183304- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Advanced Data Storage Technologies
- Stochastic processes and statistical mechanics
- Radiation Therapy and Dosimetry
- Advanced NMR Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- X-ray Spectroscopy and Fluorescence Analysis
- advanced mathematical theories
- Algebraic and Geometric Analysis
- Lanthanide and Transition Metal Complexes
Johannes Gutenberg University Mainz
2016-2025
Weatherford College
2024
Institute of High Energy Physics
2024
Max Planck Institute for Nuclear Physics
2024
Helmholtz Institute Mainz
2012-2023
University of California, San Diego
2023
Manufacturing Advocacy & Growth Network (United States)
2023
Karlsruhe Institute of Technology
2005-2014
Budker Institute of Nuclear Physics
2014
Novosibirsk State Technical University
2014
We review the present status of Standard Model calculation anomalous magnetic moment muon. This is performed in a perturbative expansion fine-structure constant $\alpha$ and broken down into pure QED, electroweak, hadronic contributions. The QED contribution by far largest has been evaluated up to including $\mathcal{O}(\alpha^5)$ with negligible numerical uncertainty. electroweak suppressed $(m_\mu/M_W)^2$ only shows at level seventh significant digit. It two loops known better than one...
Dark sectors, consisting of new, light, weakly-coupled particles that do not interact with the known strong, weak, or electromagnetic forces, are a particularly compelling possibility for new physics. Nature may contain numerous dark each their own beautiful structure, distinct particles, and forces. This review summarizes physics motivation sectors exciting opportunities experimental exploration. It is summary Intensity Frontier subgroup "New, Light, Weakly-coupled Particles" Community...
Abstract From December 2019 to June 2021, the BESIII experiment collected approximately 5.85 fb −1 of data at center-of-mass energies between 4.61 and 4.95 GeV. This is highest collision energy BEPCII has reached date. The accumulated annihilation samples are useful for studying charmonium(-like) states charmed-hadron decays. By adopting a novel method analyzing production pairs in annihilation, measured with precision 0.6 MeV. Integrated luminosities better than 1% by events large-angle...
Based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>10</a:mn><a:mn>087</a:mn><a:mo>±</a:mo><a:mn>44</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> events collected with the BESIII detector, a partial wave analysis of decay <e:math...
Studies are performed of the Cabibbo-favored decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msubsup><a:mrow><a:mi mathvariant="normal">Λ</a:mi></a:mrow><a:mrow><a:mi>c</a:mi></a:mrow><a:mrow><a:mo>+</a:mo></a:mrow></a:msubsup><a:mo stretchy="false">→</a:mo><a:mi...
Evidence for the singly Cabibbo suppressed decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msubsup><a:mi mathvariant="normal">Λ</a:mi><a:mi>c</a:mi><a:mo>+</a:mo></a:msubsup><a:mo stretchy="false">→</a:mo><a:mi>p</a:mi><a:msup><a:mi>π</a:mi><a:mn>0</a:mn></a:msup></a:math> is reported first time with a statistical significance of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mn>3.7</e:mn><e:mi>σ</e:mi></e:math> based on <g:math...
Abstract We present a measurement of the integrated luminosity collision data collected by BESIII detector at BEPCII collider center-of-mass energy GeV. The luminosities datasets taken from December 2021 to June 2022, November 2022 2023, and October 2023 February 2024 were determined be fb , respectively, analyzing large angle Bhabha scattering events. uncertainties are dominated systematic effects, statistical negligible. Our results provide essential input for future analyses precision...
Using data samples with an integrated luminosity of 5.85 fb−1 collected at center-of-mass energies from 4.61 to 4.95 GeV the BESIII detector operating BEPCII storage ring, we measure cross section for process e+e−→K+K−J/ψ. A new resonance a mass M=4708−15+17±21 MeV/c2 and width Γ=126−23+27±30 MeV is observed in energy-dependent line shape e+e−→K+K−J/ψ significance over 5σ. The K+J/ψ system also investigated search charged charmoniumlike states, but no significant Zcs+ states are observed....
Based on a data sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">(</a:mo><a:mn>2712.4</a:mn><a:mo>±</a:mo><a:mn>14.3</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>6</a:mn></a:msup><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>3686</a:mn><a:mo stretchy="false">)</a:mo></a:math> events collected with the BESIII detector at BEPCII collider, M1 transition <g:math...
We perform for the first time an amplitude analysis of decay D+→KS0π+η and report observation D+→KS0a0(980)+ using 2.93 fb−1 e+e− collision data taken at a center-of-mass energy 3.773 GeV with BESIII detector. As only W-annihilation-free among D to a0(980) pseudoscalar, is ideal in extracting contributions W-emission amplitudes involving study final-state interactions. The absolute branching fraction measured be (1.27±0.04stat±0.03syst)%. fractions intermediate processes a0(980)+→π+η...
We present the first observation of singly Cabibbo-suppressed decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msubsup><a:mi mathvariant="normal">Λ</a:mi><a:mi>c</a:mi><a:mo>+</a:mo></a:msubsup><a:mo stretchy="false">→</a:mo><a:mi mathvariant="normal">Λ</a:mi><a:msup><a:mi>K</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>π</a:mi><a:mn>0</a:mn></a:msup></a:math> with a significance <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>10</a:mn><a:mn>087</a:mn><a:mo>±</a:mo><a:mn>44</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> events collected with the BESIII detector, numerous <e:math...
A bstract Using 24.1 fb − 1 of e + collision data collected with the BESIII detector at BEPCII collider, Born cross sections and effective form factors $$ {e}^{+}{e}^{-}\to {\Sigma}^{+}{\overline{\Sigma}}^{-} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>−</mml:mo> <mml:mo>→</mml:mo> <mml:mi>Σ</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> reaction are measured. The measurements performed...
A search for $\eta_c(2S)\to p\bar{p}K^+K^-$, together with measurement of branching fractions $\chi_{cJ(J=0,1,2)}\to p\bar{p}K^+K^-$ in the $\psi(3686) \to \gamma \eta_c(2S)$ and \chi_{cJ}$ radiative decays, is performed $(2712.4\pm14.3)\times 10^6$ $\psi(3686)$ events collected BESIII detector at BEPCII collider. An evidence found, a significance $3.3\sigma$. The product fraction $\mathcal{B}[\psi(3686)\to\gamma\eta_c(2S)]\cdot\mathcal{B}[\eta_c(2S)\to p\bar{p}K^+K^-]$ determined to be...
We perform the first amplitude analysis of D_{s}^{+}→π^{+}π^{+}π^{-}π^{0} decays based on data samples electron-positron collisions recorded with BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity 7.33 fb^{-1}. report observation D_{s}^{+}→f_{0}(980)ρ(770)^{+} a statistical significance greater than 10σ determine branching fractions B(D_{s}^{+}→π^{+}π^{+}π^{-}π^{0}|_{non-η})=(2.04±0.08_{stat}±0.05_{syst})%...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>27.12</a:mn><a:mo>±</a:mo><a:mn>0.14</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>8</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>2</e:mn><e:mi>S</e:mi><e:mo...
We study the electromagnetic Dalitz decay $J/\psi \to e^+e^- \pi^0$ using $(10087 \pm 44) \times 10^6$ $J/\psi$ events collected by \bes detector. The di-electron-invariant-mass dependent transition form factor of this is explored for first time. A significant resonant structure corresponding to $\rho/\omega$ resonance observed, which cannot be described existing theoretical models, due contributions from isospin-conserving \rho and isospin-volating \omega decays. observed $\rho$--$\omega$...
We present the first amplitude analysis and branching fraction measurement of decay $D^+_s\to \pi^+\pi^+\pi^-\pi^0\pi^0$, using $e^+e^-$ collision data collected with BESIII detector at center-of-mass energies between 4.128 4.226 GeV corresponding to an integrated luminosity 7.33 fb$^{-1}$, report observation pure $W$-annihilation $D_s^+ \to \omega\rho^+$ a $(0.99\pm0.08_{\rm stat}\pm0.07_{\rm syst})\%$. In comparison low significance $\mathcal{D}$ wave in \phi\rho^+$, dominance over...
Using a sample of $(10087\pm44)\times10^{6}$ $J/\psi$ events accumulated with the BESIII detector, we analyze decays $\eta\rightarrow\pi^+\pi^-l^+l^-$ ($l=e$ or $\mu$) via process $J/\psi\rightarrow\gamma\eta$. The branching fraction $\eta\rightarrow\pi^+\pi^-e^+e^-$ is measured to be $\mathcal{B}(\eta\rightarrow\pi^+\pi^-e^+e^-)=(3.07\pm0.12_{\rm{stat.}}\pm0.19_{\rm{syst.}}) \times10^{-4}$. No signal are observed for $\eta\rightarrow\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ decay, leading an upper...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>2712.4</a:mn><a:mo>±</a:mo><a:mn>14.3</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>3686</a:mn><a:mo stretchy="false">)</a:mo></a:mrow></a:math> events collected by the BESIII detector operating at BEPCII collider, we present first...