A5107005722- 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
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Nuclear Physics and Applications
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Nuclear reactor physics and engineering
- Radiation Therapy and Dosimetry
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- advanced mathematical theories
- High-pressure geophysics and materials
- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Advanced Data Storage Technologies
University of Geneva
2015-2024
Brandeis University
2022-2023
The University of Adelaide
2013-2022
King's College London
2018-2021
Czech Technical University in Prague
2021
Universitat de València
2021
Centre de Recherche en Astronomie Astrophysique et Géophysique
2021
University College London
2021
Imperial College London
2021
University of Liverpool
2021
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
The MoEDAL experiment at Point 8 of the LHC ring is seventh and newest experiment. It dedicated to search for highly-ionizing particle avatars physics beyond Standard Model, extending significantly discovery horizon LHC. A would have revolutionary implications our fundamental understanding Microcosm. an unconventional largely passive detector comprised largest array Nuclear Track Detector stacks ever deployed accelerator, surrounding intersection region on ring. Another novel feature use...
MoEDAL is designed to identify new physics in the form of long-lived highly ionizing particles produced high-energy LHC collisions. Its arrays plastic nuclear-track detectors and aluminium trapping volumes provide two independent passive detection techniques. We present here results a first search for magnetic monopole production 13 TeV proton-proton collisions using technique, extending previous publication with 8 data during Run 1. A total 222 kg detector samples was exposed forward region...
The MoEDAL experiment is designed to search for magnetic monopoles and other highly-ionising particles produced in high-energy collisions at the LHC. largely passive detector, deployed Interaction Point 8 on LHC ring, relies two dedicated direct detection techniques. first technique based stacks of nucleartrack detectors with surface area ~18m2, sensitive particle ionisation exceeding a high threshold. These are analysed offline by optical scanning microscopes. second trapping charged an...
This paper describes a novel idea of fine-grained fully-active plastic scintillator detector made many optically independent $1\times1\times1~\text{cm}^3$ cubes with readout on three orthogonal projections by wavelength shifting fibers. The original purpose this is to serve as an active neutrino target for the detection, measurement and identification final state particles down few tenths MeV kinetic energies. views well fine granularity ensure powerful localization deposited energy combined...
MoEDAL is designed to identify new physics in the form of stable or pseudostable highly ionizing particles produced high-energy Large Hadron Collider (LHC) collisions. Here we update our previous search for magnetic monopoles Run 2 using full trapping detector with almost four times more material and twice integrated luminosity. For first time at LHC, data were interpreted terms photon-fusion monopole direct production addition Drell-Yan-like mechanism. The detector, consisting 794 kg...
The differential cross sections and vector analyzing powers for nd elastic scattering at En=248 MeV were measured 10°–180° in the center-of-mass (c.m.) system. To cover wide angular range, experiments performed separately by using two different setups forward backward angles. data are compared with theoretical results based on Faddeev calculations realistic nucleon-nucleon (NN) forces such as AV18, CD Bonn, Nijmegen I II, their combinations three-nucleon (3NFs), Tucson-Melbourne 99 (TM99),...
We update our previous search for trapped magnetic monopoles in LHC Run 2 using nearly six times more integrated luminosity and including additional models the interpretation of data. The MoEDAL forward trapping detector, comprising 222 kg aluminium samples, was exposed to 2.11 fb−1 13 TeV proton–proton collisions near LHCb interaction point analysed by searching induced persistent currents after passage through a superconducting magnetometer. Magnetic charges equal Dirac charge or above are...
The experiments at the Large Hadron Collider (LHC) are able to discover or set limits on production of exotic particles with TeV-scale masses possessing values electric and/or magnetic charge such that they behave as highly ionising (HIPs). In this paper sensitivity LHC HIP is discussed in detail. It shown a number different detection methods required investigate fully possible charge-mass range. These include direct HIPs pass through either passive active detectors and, case magnetically...
The MoEDAL trapping detector, consists of approximately 800 kg aluminium volumes. It was exposed during Run-2 the LHC program to 6.46 fb^-1 13 TeV proton-proton collisions at LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in detector sought by passing volumes comprising through a SQUID magnetometer. presence trapped dyon would be signalled persistent current induced On basis Drell-Yan production model, we exclude charge ranging up 5 Dirac...
If produced in high energy particle collisions at the LHC, magnetic monopoles could stop material surrounding interaction points. Obsolete parts of beam pipe near CMS region, which were exposed to products pp and heavy ion collisions, analysed using a SQUID-based magnetometer. The purpose this work is quantify performance magnetometer context monopole search small set samples accelerator ahead 2013 shutdown.
ND280 is a near detector of the T2K experiment which located in J-PARC accelerator complex Japan. After decade fruitful data-taking, scheduled for upgrade. The time-of-flight (ToF) detector, described this article, one three new detectors that will be installed basket ND280. ToF has modular structure. Each module represents an array 20 plastic scintillator bars are stacked plane 2.4 x 2.2 m2 area. Six modules similar construction assembled cube, thus providing almost 4pi enclosure active...
The neutron–deuteron (nd) elastic scattering differential cross section has been measured at 95 MeV incident neutron energy. neutron–proton (np) also for normalization purposes. An inclusion of three-nucleon forces gives a considerable improvement in the theoretical description nd data angular region cross-section minimum.
Recently, we have reported a measurement of the neutron-deuteron elastic scattering differential cross section at 95 MeV. In present work, previous results are confirmed with an independent performed another setup. The new data cover full angular distribution by combining neutron detection and deuteron detection, unprecedented precision in region cross-section minimum, where three-nucleon forces expected to be significant. effect already identified is clearly seen data, which agree well...
A facility for detection of scattered neutrons in the energy interval $50--130\phantom{\rule{0.3em}{0ex}}\text{MeV}$, SCANDAL, has recently been installed at $20--180\phantom{\rule{0.3em}{0ex}}\text{MeV}$ neutron beam line The Svedberg Laboratory, Uppsala. Elastic scattering from $^{12}\mathrm{C}$ and $^{208}\mathrm{Pb}$ studied $96\phantom{\rule{0.3em}{0ex}}\text{MeV}$ $10\ifmmode^\circ\else\textdegree\fi{}--70\ifmmode^\circ\else\textdegree\fi{}$ interval. achieved resolution,...
Data on elastic scattering of 96 MeV neutrons from $^{56}\mathrm{Fe}$, $^{89}\mathrm{Y}$, and $^{208}\mathrm{Pb}$ in the angular interval $10\text{\ensuremath{-}}{70}^{\ifmmode^\circ\else\textdegree\fi{}}$ are reported. The previously published data have been extended, as a new method has developed to obtain more information data, namely increase number bins at most forward angles. A study deviation zero-degree cross section Wick's limit performed. It was shown that agreement with while...
For a broad range of values magnetic monopole mass and charge, the abundance monopoles trapped inside Earth would be expected to enhanced in mantle beneath geomagnetic poles. A search for was conducted using signature an induced persistent current following passage igneous rock samples through SQUID-based magnetometer. total 24.6 kg rocks from various selected sites, among which 23.4 are mantle-derived Arctic Antarctic areas, analyzed. No were found, 90% confidence level upper limit...
Three neutron-deuteron scattering experiments at 95 MeV have been performed recently The Svedberg Laboratory in Uppsala. Subsets of the results these reported two short articles, showing clear evidence for three-nucleon force effects. In this paper, we present a more detailed description experimental methods as well further discussion results. addition to data, neutron-proton and $^{12}\mathrm{C}$$(n,n)$ elastic data measured normalization purposes, $^{16}\mathrm{O}$$(n,n)$ obtained first...
In this study an array of eight 6 mm x area SiPMs was coupled to the end a long plastic scintillator counter which exposed 2.5 GeV/c muon beam at CERN PS. Timing characteristics bars with dimensions 150 cm 1 and 120 11 have been studied. An 8-channel SiPM anode readout ASIC (MUSIC R1) based on novel low input impedance current conveyor has used read out amplify independently sum signals end. Prospects for applications in large-scale particle physics detectors timing resolution below 100 ps...
High-intensity proton beams impinging on a fixed target or beam dump allow to probe new physics via the production of weakly-coupled particles in hadron decays. The CERN SPS provides opportunities do so with running NA62 experiment and planned SHiP experiment. Reconstruction kaon decay kinematics (beam mode) allows for existence right-handed neutrinos dark photons masses below 0.45 GeV. Direct reconstruction displaced vertices from decays neutral (dump will up 5 GeV mixings down several...
Based on test-beam measurements, we study the response of a liquid-scintillator detector equipped with wavelength-shifting optical modules, that are proposed e.g. for IceCube experiment and SHiP experiment, adiabatic light guides viewed either by photomultiplier tube or an array silicon photomultipliers. We report efficiency, time resolution to different particle types point out potential ways improve performance.
A facility for detection of scattered neutrons in the energy interval 50–130 MeV, nucleon assembly, has recently been installed at 20–180 MeV neutron beam line The Svedberg Laboratory, Uppsala. First results on elastic scattering from 12C and 208Pb 96 incident are presented. This experiment represents highest where ground state resolved first excited scattering. compared with modern optical model predictions.Received 6 December 2002DOI:https://doi.org/10.1103/PhysRevC.67.031601©2003 American...
High-intensity proton beams impinging on a fixed target or beam dump allow to probe new physics via the production of weakly-coupled particles in hadron decays. The CERN SPS provides opportunities do so with running NA62 experiment and planned SHiP experiment. Reconstruction kaon decay kinematics (beam mode) allows for existence right-handed neutrinos dark photons masses below 0.45 GeV. Direct reconstruction displaced vertices from decays neutral (dump will up 5 GeV mixings down several...