A5007113202- 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
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Advanced Data Storage Technologies
- advanced mathematical theories
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Effects in Electronics
- Nuclear reactor physics and engineering
- Big Data Technologies and Applications
- Particle accelerators and beam dynamics
- Structural Analysis of Composite Materials
- Digital Radiography and Breast Imaging
University of Göttingen
2016-2025
Northern Illinois University
2020-2024
Institute of Science and Technology
2023-2024
Institute for High Energy Physics
2023-2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2014-2023
Czech Technical University in Prague
2023
A combination is presented of the inclusive deep inelastic cross sections measured by H1 and ZEUS Collaborations in neutral charged current unpolarised ep scattering at HERA during period 1994-2000. The data span six orders magnitude negative four-momentum-transfer squared, Q^2, Bjorken x. method used takes correlations systematic uncertainties into account, resulting an improved accuracy. combined are sole input a NLO QCD analysis which determines new set parton distributions, HERAPDF1.0,...
The production of D+- and D0 mesons has been measured with the ZEUS detector at HERA using an integrated luminosity 133.6 pb-1. measurements cover kinematic range 5 < Q^2 1000 GeV^2, 0.02 y 0.7, 1.5 p_T^D 15 GeV eta^D 1.6. Combinatorial background to D meson signals is reduced by microvertex reconstruct displaced secondary vertices. Production cross sections are compared predictions next-to-leading-order QCD which found describe data well. Measurements extrapolated full phase space in order...
Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced $\sigma_{\rm red}^{c\bar{c}}$ for obtained kinematic range photon virtuality 2.5≤Q 2≤2000 GeV2 Bjorken scaling variable 3⋅10−5≤x≤5⋅10−2. The combination method accounts correlations systematic uncertainties among different data sets. combined together with inclusive used as input a detailed NLO QCD analysis to study influence heavy flavour...
A search for single-top production, $ep \rightarrow etX$, has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of $0.37\fbi$. No evidence top production was found, consistent expectation from Standard Model. Limits were computed via flavour changing neutral current transitions. The result combined a previous yielding total 0.50fb-1. 95% credibility level upper limit 0.13 pb obtained cross section centre-of-mass energy $\sqrt{s}=315\gev$.
A bstract The production of D 0 , * + $ D_s^{+} and \Lambda_c^{+} charm hadrons their antiparticles in ep scattering at HERA has been studied with the ZEUS detector, using a total integrated luminosity 372 pb −1 . fractions quarks hadronising into particular hadron were derived. In addition, ratio neutral to charged -meson rates, fraction mesons produced vector state, stangeness-suppression factor have determined. measurements performed photoproduction regime. reconstructed range transverse...
Isolated photon production in deep inelastic ep scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 320pb^-1. Measurements were made isolated-photon transverse-energy and pseudorapidity ranges 4 < E_T 15 GeV -0.7 eta 0.9 for exchanged virtualities, Q^2, range 10 Q^2 350 invariant masses hadronic system W_X> 5 GeV. Differential cross sections are presented inclusive isolated as functions x, eta. Leading-logarithm parton-shower Monte Carlo simulations...
A bstract The production of D *± mesons in deep inelastic ep scattering has been measured for exchanged photon virtualities 5 < Q 2 1000 GeV , using an integrated luminosity 363 pb −1 with the ZEUS detector at HERA. Differential cross sections have and compared to next-to-leading-order QCD calculations. cross-sections are used extract charm contribution proton structure functions, expressed terms reduced section, $ \sigma_{\mathrm{red}}^{{c\overline{c}}} . Theoretical calculations based...
Diffractive photoproduction of dijets was measured with the ZEUS detector at ep collider HERA using an integrated luminosity 77.2 pb-1. The measurements were made in kinematic range Q^2 < 1 GeV^2, 0.20 y 0.85 and x_pom 0.025, where is photon virtuality, inelasticity fraction proton momentum taken by diffractive exchange. two jets highest transverse energy, E_T^jet, required to satisfy E_T^jet > 7.5 6.5 GeV, respectively, lie pseudorapidity -1.5 eta^jet 1.5. Differential cross sections...
The production of charm and beauty quarks in ep interactions has been measured with the ZEUS detector at HERA for squared four-momentum exchange Q^2>20 GeV^2, using an integrated luminosity 126 pb^{-1}. Charm were identified through their decays into muons. Differential cross sections muon transverse momenta p_T^{\mu}>1.5 GeV pseudorapidities -1.6<\eta^{\mu}<2.3, as a function p_T^{\mu}, \eta^{\mu}, Q^2 Bjorken x. contributions to proton structure F_2 also extracted. results agree previous...
Measurements of the neutral current cross sections for deep inelastic scattering in e^- p collisions at HERA with a longitudinally polarised electron beam are presented. The single-differential cross-sections dsigma/dQ^2, dsigma/dx and dsigma/dy double-differential Q^2 x measured kinematic region y < 0.9 > 185 GeV^2 both positively negatively beams each polarisation state separately. measurements based on an integrated luminosity 169.9 pb^-1 taken ZEUS detector 2005 2006 centre-of-mass...
A search for events containing an isolated electron or muon and missing transverse momentum produced in e ± p collisions is performed with the H1 ZEUS detectors at HERA. The data were taken period 1994–2007 correspond to integrated luminosity of 0.98 fb−1. observed event yields are good overall agreement Standard Model prediction, which dominated by single W production. In + data, large hadronic P T X > 25GeV, a total 23 compared prediction 14.0 1.9. boson production cross section measured...
Measurements of the cross sections for charged current deep inelastic scattering in e − p collisions with longitudinally polarised electron beams are presented. The measurements based on a data sample an integrated luminosity 175 pb−1 collected ZEUS detector at HERA centre-of-mass energy 318 GeV. total section is given positively and negatively beams. differential cross-sections d σ/dQ 2, σ/dx σ/dy presented Q 2>200 GeV2. double-differential cross-section 2 σ/dxdQ kinematic range 280<Q 2<30...
Measurements of the cross sections for charged current deep inelastic scattering in e + p collisions with a longitudinally polarised positron beam are presented. The measurements based on data sample an integrated luminosity 132 pb−1 collected ZEUS detector at HERA centre-of-mass energy 318 GeV. total section is presented positive and negative values longitudinal polarisation beams. single-differential cross-sections dσ/dQ 2, dσ/dx dσ/dy Q 2>200 GeV2. reduced cross-section $\tilde{\sigma}$...
For the first time, differential inclusive-jet cross sections have been measured in neutral current deep inelastic ep scattering using anti-kT and SIScone algorithms. The measurements were made for boson virtualities Q2>125 GeV2 with ZEUS detector at HERA an integrated luminosity of 82 pb−1 jets identified Breit frame. performance suitability jet algorithms their use hadron-like reactions investigated by comparing to those performed kT algorithm. Next-to-leading-order QCD calculations give a...
A search for first-generation leptoquarks was performed in electron-proton and positron-proton collisions recorded with the ZEUS detector at HERA 2003–2007 using an integrated luminosity of 366 pb−1. Final states electron jets or missing transverse momentum were analyzed, searching resonances other deviations from standard model predictions. No evidence any leptoquark signal found. The data combined previously taken HERA, resulting a total 498 Limits on Yukawa coupling, λ, set as function...