O. L. Buchmueller
A5106322311- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Distributed and Parallel Computing Systems
- Pulsars and Gravitational Waves Research
- International Science and Diplomacy
- COVID-19 epidemiological studies
- Amino Acid Enzymes and Metabolism
- Superconducting Materials and Applications
- Business Process Modeling and Analysis
- Radioactive Decay and Measurement Techniques
- Stochastic processes and statistical mechanics
- Model-Driven Software Engineering Techniques
- Algorithms and Data Compression
Science Oxford
2024
Imperial College London
2015-2024
Université Toulouse III - Paul Sabatier
2024
Centre National de la Recherche Scientifique
2024
Laboratoire Collisions Agrégats Réactivité
2024
University of Oxford
2023
European Organization for Nuclear Research
2004-2016
SLAC National Accelerator Laboratory
2003-2014
Stanford University
2003-2014
Stanford Synchrotron Radiation Lightsource
2003-2007
The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,062 new measurements 721 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. All search limits are listed in Summary Tables. also give numerous tables, figures, formulae, reviews...
This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2658 new measurements 644 papers, we list, evaluate, and average measured properties gauge bosons, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as Higgs heavy neutrinos, supersymmetric particles. All the search limits are listed in Summary Tables. also give numerous tables, figures, formulae, reviews topics Standard Model, detectors, probability,...
We outline the experimental concept and key scientific capabilities of AION (Atom Interferometer Observatory Network), a proposed programme using cold strontium atoms to search for ultra-light dark matter, explore gravitational waves in mid-frequency range between peak sensitivities LISA LIGO/Virgo/ KAGRA/INDIGO/Einstein Telescope/Cosmic Explorer experiments, probe other frontiers fundamental physics. would complement planned searches as well mergers involving intermediate-mass black holes...
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
This document is the final report of ATLAS-CMS Dark Matter Forum, a forum organized by ATLAS and CMS collaborations with participation experts on theories Matter, to select minimal basis set dark matter simplified models that should support design early LHC Run-2 searches. A prioritized, compact benchmark proposed, accompanied studies parameter space these repository generator implementations. also addresses how apply Effective Field Theory formalism for collider searches present results...
This document a outlines set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these have when applied searches at LHC, provide number useful expressions reference. The list includes both s-channel t-channel scenarios. For s-channel, spin-0 spin-1 mediations are discussed, also realizations where Higgs particle provides portal between visible sectors. guiding principles underpinning proposed...
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at weak scale. When produced experiments such as Large Hadron Collider (LHC) CERN, these long-lived (LLPs) decay far from interaction vertex of primary proton-proton collision. Such LLP signatures distinct those promptly decaying targeted by majority searches for new physics LHC, often requiring customized techniques identify, example, significantly displaced vertices, tracks with...
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
This article reports world averages for measurements of b-hadron and c-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using results available at end 2007. For averaging, common input parameters used in various analyses are adjusted (rescaled) to values, known correlations taken into account. The include branching fractions, lifetimes, neutral meson mixing parameters, CP violation semileptonic decays.
We study the validity of effective field theory (EFT) interpretations monojet searches for dark matter at LHC vector and axial-vector interactions. show that EFT approach is valid when mediator has mass m_med greater than 2.5 TeV. find current limits on contact interaction scale Lambda in apply to theories are perturbative m_DM < 800 GeV. However, all values these theories, width larger mass, so a particle-like interpretation doubtful. Furthermore, consistency with thermal relic density...
We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. study two MSDM models where DM is Dirac fermion which interacts with vector and axial-vector mediator. The are characterised by four parameters: m , M med g q, mediator masses, couplings quarks respectively. accurately capture full event kinematics, dependence on all masses can be systematically studied. interpretation of mono-jet in this used establish an...
This report summarises the physics opportunities in search and study of beyond Standard Model at a 100 TeV pp collider.
We analyze the impact of data from full Run 1 LHC at 7 and 8 TeV on CMSSM with [Formula: see text] NUHM1 text], incorporating constraints imposed by other experiments such as precision electroweak measurements, flavour cosmological density cold dark matter direct search for scattering particles in LUX experiment. use following results experiments: ATLAS searches events accompanied jets data, CMS measurements mass Higgs boson, heavy neutral bosons a combination LHCb text]. Our are based...
Different mechanisms operate in various regions of the MSSM parameter space to bring relic density lightest neutralino, $$\tilde{\chi }^0_{1}$$ , assumed here be SUSY particle (LSP) and thus dark matter (DM) particle, into range allowed by astrophysics cosmology. These include coannihilation with some nearly degenerate next-to-lightest supersymmetric such as lighter stau $$\tilde{\tau }_{1}$$ stop $$\tilde{t}_{1}$$ or chargino }^\pm _{1}$$ resonant annihilation via direct-channel heavy Higgs...
We use MasterCode to perform a frequentist analysis of the constraints on phenomenological MSSM model with 11 parameters, pMSSM11, including from
Abstract We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning status of cold atom technologies, prospective scientific and societal opportunities offered by their deployment space, developments needed before atoms could be operated space. The technologies discussed include atomic clocks, quantum gravimeters accelerometers, interferometers. Prospective applications metrology, geodesy measurement terrestrial mass change due to, e.g., climate change,...
We discuss the allowed parameter spaces of supersymmetric scenarios in light improved Higgs mass predictions provided by FeynHiggs 2.10.0. The combine Feynman-diagrammatic results with a resummation leading and subleading logarithmic corrections from stop/top sector, which yield significant improvement region large stop masses. Scans pMSSM space show that, for given values soft supersymmetry-breaking parameters, new contributions beyond two-loop order implemented tend to give larger CP-even...