A5034783307- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Astrophysics and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- advanced mathematical theories
- Black Holes and Theoretical Physics
- Nuclear Physics and Applications
- Advanced Data Storage Technologies
- Algorithms and Data Compression
- Digital Radiography and Breast Imaging
- Statistical Mechanics and Entropy
- Big Data Technologies and Applications
- Radiation Effects in Electronics
Humboldt-Universität zu Berlin
2016-2025
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Udine
2023-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2023-2024
The Abdus Salam International Centre for Theoretical Physics (ICTP)
2023-2024
University of Göttingen
2023-2024
A. Alikhanyan National Laboratory
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2018-2023
University of California, Santa Cruz
2023
The University of Tokyo
2018-2020
Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce light mediator, so-called photon (A′), connecting sector to standard model. We present search for reaction e+e−→γA′, A′→e+e−, μ+μ− using 514 fb−1 data collected with BABAR detector. observe no statistically significant deviations from model predictions, and we set 90% confidence level upper limits on mixing strength between at 10−4−10−3...
A new general purpose fixed target facility is proposed at the CERN SPS accelerator which aimed exploring domain of hidden particles and make measurements with tau neutrinos. Hidden are predicted by a large number models beyond Standard Model. The high intensity 400~GeV beam allows probing wide variety containing light long-lived exotic masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. experimental programme capable being extended in future,...
In this article we describe Professor, a new program for tuning model parameters of Monte Carlo event generators to experimental data by parameterising the per-bin generator response parameter variations and numerically optimising parameterised behaviour. Simulated analysis is obtained using Rivet toolkit. This paper presents Professor procedure implementation, illustrated with application method tunes Pythia 6 from LEP/SLD Tevatron experiments. These are substantial improvements on existing...
We perform a comprehensive statistical analysis of the standard model (SM) with three and four generations using latest Higgs search results from LHC Tevatron, electroweak precision observables measured at LEP SLD, determinations ${M}_{W}$, ${m}_{t}$, ${\ensuremath{\alpha}}_{s}$. For three-generation case we analyze tensions in fit by removing individual comparing their predicted values ones. In particular, discuss impact on deviations best-fit values. Our indirect prediction top mass is...
We report the direct observation of muon neutrino interactions with SND@LHC detector at Large Hadron Collider. A dataset proton-proton collisions sqrt[s]=13.6 TeV collected by in 2022 is used, corresponding to an integrated luminosity 36.8 fb^{-1}. The search based on information from active electronic components detector, which covers pseudorapidity region 7.2<η<8.4, inaccessible other experiments collider. Muon candidates are identified through their charged-current interaction topology, a...
This is the summary and introduction to proceedings contributions for Les Houches 2009 "Tools Monte Carlo" working group.
We study the processes $\gamma \gamma \to \eta_c \eta' K^+ K^-$, $\eta' \pi^+ \pi^-$, and $\eta \pi^-$ using a data sample of 519 $fb^{-1}$ recorded with BaBar detector operating at SLAC PEP-II asymmetric-energy $e^+e^-$ collider center-of-mass energies near $\Upsilon(nS)$ ($n = 2,3,4$) resonances. This is first observation decay $\eta_c K^-$ we measure branching fraction $\Gamma(\eta_c K^-)/(\Gamma(\eta_c \pi^-)=0.644\pm 0.039_{\rm stat}\pm 0.032_{\rm sys}$. Significant interference...
We analyze the impact of LHC and Tevatron Higgs data on viability standard model with a sequential fourth generation, assuming Dirac neutrinos mass 125 GeV. To this end we perform combined fit to signal cross sections $pp\ensuremath{\rightarrow}H\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$, $Z{Z}^{*}$, $W{W}^{*}$ at LHC, $p\overline{p}\ensuremath{\rightarrow}VH\ensuremath{\rightarrow}Vb\overline{b}$ ($V=W$, $Z$) electroweak precision observables. Fixing fourth-generation...
We present Dalitz plot analyses for the decays of $B$ mesons to ${D}^{\ensuremath{-}}{D}^{0}{K}^{+}$ and ${\overline{D}}^{0}{D}^{0}{K}^{+}$. report observation ${D}_{s1}^{*}(2700{)}^{+}$ resonance in these two channels obtain measurements mass $M({D}_{s1}^{*}(2700{)}^{+})={2699}_{\ensuremath{-}7}^{+14}\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ width $\mathrm{\ensuremath{\Gamma}}({D}_{s1}^{*}(2700{)}^{+})={127}_{\ensuremath{-}19}^{+24}\text{ }\mathrm{MeV}$, including statistical systematic...
A dedicated measurement of additional radiation in e+e−→μ+μ−γ and e+e−→π+π−γ initial-state-radiation events is presented using the full BABAR data sample. For first time results are at next-to- next-to-next-to-leading order, with one two photons, respectively, for from initial final states. Comparison predictions phokhara afkqed Monte Carlo generators performed, revealing discrepancies one-photon rates angular distributions former. This disagreement has a negligible effect on e+e−→π+π−(γ)...
Abstract The Scattering and Neutrino Detector at the LHC (SND@LHC) started taking data beginning of Run 3 LHC. experiment is designed to perform measurements with neutrinos produced in proton-proton collisions an energy range between 100 GeV 1 TeV. It covers a previously unexplored pseudo-rapidity $$7.2<\eta <8.4$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>7.2</mml:mn> <mml:mo><</mml:mo> <mml:mi>η</mml:mi> <mml:mn>8.4</mml:mn> </mml:mrow>...
We present measurements of Collins asymmetries in the inclusive process $e^+e^- \rightarrow h_1 h_2 X$, $h_1h_2=KK,\, K\pi,\, \pi\pi$, at center-of-mass energy 10.6 GeV, using a data sample 468 fb$^{-1}$ collected by BaBar experiment PEP-II $B$ factory SLAC National Accelerator Center. Considering hadrons opposite thrust hemispheres hadronic events, we observe clear azimuthal ratio unlike- to like-sign, and all charged $h_1 h_2$ pairs, which increase with hadron energies. The $K\pi$ are...
We perform the first global fit to inclusive $B\to X_s\gamma$ measurements using a model-independent treatment of nonperturbative $b$-quark distribution function, with next-to-next-to-leading logarithmic resummation and $\mathcal{O}(\alpha_s^2)$ fixed-order contributions. The normalization decay rate, given by $\lvert C_7^{\rm incl} V_{tb} V_{ts}^*\rvert^2$, is sensitive physics beyond Standard Model (SM). determine V_{ts}^* \rvert = (14.77 \pm 0.51_{\rm fit} 0.59_{\rm theory} 0.08_{\rm...
Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below electroweak scale. In presence couplings to bosons, these could emitted flavor-changing B meson decays. We report herein a search for an ALP, a, reaction B^{±}→K^{±}a, a→γγ using data collected by BABAR experiment at SLAC. No significant signal is observed, 90% confidence level upper limits on ALP coupling bosons derived as function mass, improving current...
We present measurements of the inclusive production antideuterons in $e^+e^-$ annihilation into hadrons at $\approx 10.58 \mathrm{\,Ge\kern -0.1em V}$ center-of-mass energy and $\Upsilon(1S,2S,3S)$ decays. The results are obtained using data collected by BABAR detector PEP-II electron-positron collider. Assuming a fireball spectral shape for emitted antideuteron momentum, we find $\mathcal{B}(\Upsilon(1S) \to \bar{d}X) = (2.81 \pm 0.49 \mathrm{(stat)} {}^{+0.20}_{-0.24} \mathrm{(syst)})/!...
The process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}\ensuremath{\gamma}$ is studied at a center-of-mass energy near the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance using data sample of $469\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with BABAR detector PEP-II collider. We have performed precise measurement...
This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model $\ensuremath{\tau}$ neutrino strength $|{U}_{\ensuremath{\tau}4}{|}^{2}$, corresponding to absolute square extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from BABAR experiment, total integrated luminosity $424\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, are analyzed using kinematic approach makes no assumptions...
We study the processes ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}\ensuremath{\gamma}$, ${K}_{S}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}\ensuremath{\gamma}$, and...
A new mechanism has been proposed to simultaneously explain the presence of dark matter and matter-antimatter asymmetry in universe. This scenario predicts exotic $B$ meson decays into a baryon sector anti-baryon ($\psi_D$) with branching fractions accessible at factories. We present search for $B \rightarrow \Lambda \psi_D$ using data collected by $BABAR$ experiment SLAC. reaction is identified fully reconstructing accompanying requiring single $\Lambda$ remaining particles. No significant...