A5051143862- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Immunotherapy and Immune Responses
- Pulsars and Gravitational Waves Research
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- CAR-T cell therapy research
- Quantum Chromodynamics and Particle Interactions
- Particle accelerators and beam dynamics
- Nuclear Physics and Applications
- Cancer Immunotherapy and Biomarkers
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Radiation Dose and Imaging
- Radiation Effects in Electronics
- Nuclear physics research studies
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Graphite, nuclear technology, radiation studies
European Organization for Nuclear Research
2018-2025
Johannes Gutenberg University Mainz
2016-2025
Instituto de Física Teórica
2025
Prisma
2021-2024
Proteogenomics Research Institute for Systems Medicine
2021-2024
Protéomique, Réponse Inflammatoire et Spectrométrie de Masse
2021-2024
Foundation for Research and Technology Hellas
2024
University of Strathclyde
2024
Klinikum Braunschweig
2020
Charité - Universitätsmedizin Berlin
2003-2016
This white paper addresses the hypothesis of light sterile neutrinos based on recent anomalies observed in neutrino experiments and latest astrophysical data.
A bstract Neutrino oscillations involving eV-scale neutrino mass states are investigated in the context of global oscillation data including short and long-baseline accelerator, reactor, radioactive source experiments, as well atmospheric solar neutrinos. We consider sterile schemes one or two mass-squared differences at eV 2 scale denoted by 3+1, 3+2, 1+3+1. discuss hints for neutrinos from $ \mathop{{{v_e}}}\limits^{{\left( - \right)}} disappearance (reactor Gallium anomalies)...
We use ATLAS and CMS searches in the mono-jet + missing energy mono-photon final state to set limits on couplings of dark matter quarks gluons. Working an effective field theory framework we compare several existing analyses find that with high p_T cuts are more sensitive matter. constrain suppression scale matter-Standard Model interactions, convert these into bounds cross sections relevant direct indirect detection. that, for certain types operators, particular spin-independent...
Received 11 February 1964DOI:https://doi.org/10.1103/PhysRevLett.12.204©1964 American Physical Society
A bstract We study a class of nonstandard interactions the newly discovered 125 GeV Higgs-like resonance that are especially interesting probes new physics: flavor violating Higgs couplings to leptons and quarks. These interaction can arise in many frameworks physics at electroweak scale such as two doublet models, extra dimensions, or models compositeness. rederive constraints on using data rare decays, electric magnetic dipole moments, meson oscillations. confirm boson decays be sizeable...
Dark matter pair production at high energy colliders may leave observable signatures in the and momentum spectra of objects recoiling against dark matter. We use LEP data on mono-photon events with large missing to constrain coupling electrons. Within a class models, our limits are complementary competitive annihilation WIMP-nucleon scattering from indirect direct searches. Our limits, however, do not suffer systematic astrophysical uncertainties associated limits. For example, we able rule...
New predictions for the anti-neutrino flux emitted by nuclear reactors suggest that reactor experiments may have measured a deficit in flux, which can be interpreted terms of oscillations between known active neutrinos and new sterile states. Motivated this observation, we perform re-analysis global short-baseline neutrino oscillation data framework with one or two neutrinos. While is still not sufficient to reconcile signals suggested LSND MiniBooNE null results from other searches, find...
We investigate standard and non-standard solar neutrino signals in direct dark matter detection experiments. It is well known that even without new physics, scattering of neutrinos on nuclei or electrons an irreducible background for searches, once these experiments each the ton scale. Here, we entertain possibility interactions are enhanced by such as light force carriers (for instance a "dark photon") magnetic moments. consider models with only three flavors, scenarios extra sterile...
Femtolensing of gamma ray bursts (GRBs) has been put forward as an exciting possibility to probe exotic astrophysical objects with masses below 10 −13 solar such small primordial black holes or ultra-compact dark matter minihalos, made up for instance QCD axions. In this paper we critically review idea, properly taking into account the extended nature source well wave optics effects. We demonstrate that most GRBs are inappropriate femtolensing searches due their large sizes. This removes...
A bstract We discuss the possibility to explain anomalies in short-baseline neutrino oscillation experiments terms of sterile neutrinos. work a 3 + 1 framework and pay special attention recent new data from reactor experiments, IceCube MINOS+. find that results DANSS NEOS support explanation anomaly, based on an analysis relies solely relative comparison measured spectra. Global ν e disappearance channel favour oscillations at σ level with Δ m 41 2 ≈ 1.3 eV | U 4 0 . 1, even without any...
We show that sterile neutrinos with masses ~1 eV or larger, as motivated by several short-baseline oscillation anomalies, can be consistent cosmological constraints if they are charged under a hidden sector force mediated light boson. In this case, experience large thermal potential suppresses mixing between active and in the early Universe, even vacuum angles large. Thus, abundance of Universe remains very small, their impact on Big Bang Nucleosynthesis, Cosmic Microwave Background,...
We explore gravitational wave signals arising from first-order phase transitions occurring in a secluded hidden sector, allowing for the possibility that sector may have different temperature than Standard Model sector. present sensitivity to such scenarios both current and future detectors model-independent fashion. Since sectors are of particular interest dark matter models at MeV scale or below, we pay special attention reach pulsar timing arrays. Cosmological constraints on light degrees...
Abstract The existence of nonzero neutrino masses points to the likely multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, referred as leptons (HNLs). In this white paper, we discuss present experimental status HNLs including colliders, beta decay, accelerators, well astrophysical and cosmological impacts. We importance continuing search for HNLs, its potential impact on our understanding key fundamental questions,...
A bstract Weyl fermions of spin $$ \frac{1}{2} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mfrac> <mml:mn>1</mml:mn> <mml:mn>2</mml:mn> </mml:mfrac> </mml:math> minimally coupled to Einstein’s gravity in 4 dimensions cannot be produced purely gravitationally an expanding Universe at tree level. Surprisingly, as we showed a recent letter [1], this changes gravitational 1-loop when cosmic perturbations, like wave background, are present. Such background introduces new scale,...
The conclusions of the Physics Working Group international scoping study a future Neutrino Factory and super-beam facility (the ISS) are presented. ISS was carried by community between NuFact05, 7th International Workshop on Factories Superbeams, Laboratori Nazionali di Frascati, Rome, June 21-26, 2005) NuFact06 (Ivine, California, 24{30 August 2006). physics case for an extensive experimental programme to understand properties neutrino is presented role high-precision measurements...
We consider the hypothesis that Dark Matter (DM) has tree-level interactions only with leptons. Such a framework, where DM recoils against electrons bound in atoms, been proposed as an explanation for annually modulated scintillation signal DAMA/LIBRA versus absence of nuclear experiments like CDMS or XENON10. However, even such leptophilic scenario there are loop induced DM-hadron interactions, photons emitted from virtual leptons couple to charge nucleus. Using general effective field...
The formalism of nonstandard four-fermion interactions provides a convenient, model-independent way parametrizing wide class ``new physics'' scenarios. In this article, we study the performance reactor and superbeam neutrino experiments in presence such (NSI). Because interference between standard amplitudes, sizeable effects are to be expected if NSI parameters close their current upper limits. We derive approximate formulas for relevant oscillation probabilities including NSI, show how...
A very common problem in science is the numerical diagonalization of symmetric or hermitian 3 × matrices. Since standard "black box" packages may be too inefficient if number matrices large, we study several alternatives. We consider optimized implementations Jacobi, QL, and Cuppen algorithms compare them with an alytical method relying on Cardano's formula for eigenvalues vector cross products eigenvectors. Jacobi most accurate, but also slowest method, while QL are good general purpose...
This report summarises the physics opportunities in search and study of beyond Standard Model at a 100 TeV pp collider.
A sharp and spatially extended peak in an astrophysical gamma ray spectrum would provide very strong evidence for the existence of dark matter (DM), given that there are no known processes could mimic such a signal. From particle physics perspective, perhaps simplest explanation is internal bremsstrahlung DM annihilation through charged t-channel mediator eta close mass to chi. Since quarks already tightly constrained this scenario, we focus here on leptophilic case. We compute...
We revisit the physics of neutrino magnetic moments, focusing in particular on case where right-handed, or sterile, neutrinos are heavier (up to several MeV) than left-handed Standard Model neutrinos. The discussion is centered around idea detecting an upscattering event mediated by a transition moment dark matter experiment. Considering from all known sources, as well including available data XENON1T and Borexino, we derive strongest up-to-date exclusion limits active-to-sterile moment....
The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond. AMEGO combines high sensitivity 200 keV 10 GeV energy range with wide field of view, good spectral resolution, polarization sensitivity. Therefore, key study astrophysical objects have unique signatures gamma-ray regime, such as neutron star mergers, supernovae, flaring active galactic nuclei....