A5055245074- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Nuclear physics research studies
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Superconducting Materials and Applications
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Radioactive Decay and Measurement Techniques
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Scientific Research and Discoveries
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Sensor Technology and Measurement Systems
- Heat Transfer and Optimization
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Advanced Sensor Technologies Research
- Political Economy and Marxism
- Magnetic Bearings and Levitation Dynamics
Fermi National Accelerator Laboratory
1960-2024
Boston University
2015-2023
University College London
2011-2021
The University of Texas at Austin
2017-2020
Idaho National Laboratory
2017
University of Chicago
1960
The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 Brookhaven National Laboratory AGS. result appears to be greater Standard-Model prediction by three standard deviations. When combined with expected improvement hadronic contributions, should able determine definitively whether or not is evidence for physics beyond Standard Model. After review of motivation and basic technique, which use storage...
The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- with a sensitivity approximately four orders of magnitude better than current world's best limits this process. experiment's offers discovery potential over wide array new physics models and probes mass scales well beyond reach LHC. We describe herein preliminary design proposed experiment. This document was created in partial fulfillment requirements necessary to...
Observing double beta decay with no neutrinos in the final state, would signal existence of lepton number violating processes and hint at neutrino being a Majorana particle. The impressive effort represented by NEMO-3 experiment sets important constraints on mass lepton-number processes.
The NEMO-3 experiment at the Modane Underground Laboratory has investigated double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr data recorded with a $6.99\,{\rm g}$ sample Ca}$, approximately $150$ candidate events have been selected signal-to-background ratio greater than $3$. half-life for two-neutrino Ca}$ measured to be $T^{2\nu}_{1/2}\,=\,[6.4\, ^{+0.7}_{-0.6}{\rm (stat.)} \, ^{+1.2}_{-0.9}{\rm (syst.)}] \times 10^{19}\,{\rm yr}$. A search neutrinoless yields null result and...
The NEMO-3 collaboration reports the half-life of ${}^{150}$Nd via two-neutrino double-beta decay mode to an unprecedented accuracy. For zero-neutrino ${}^{150}$Nd, distinctive signature possible Majorana nature neutrinos, no observations but sets new upper bounds for in various scenarios beyond standard model.
The full data set of the NEMO-3 experiment has been used to measure half-life two-neutrino double beta decay $$^{100}$$ Mo ground state Ru, $$T_{1/2} = \left[ 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38}_{-0.40}\,\left( syst \right] \times 10^{18}$$ year. two-electron energy sum, single electron spectra and distribution angle between electrons are presented with an unprecedented statistics $$5\times 10^5$$ events a signal-to-background ratio $$\sim $$ 80. Clear evidence for Single...
We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g (130)Te in form enriched and natural tellurium foils. The ββ decay rate is found to be greater than zero a significance 7.7 standard deviations half-life measured T(½)(2ν) = [7.0 ± 0.9(stat) 1.1(syst)] × 10(20) yr. This represents most precise measurement this yet published first real-time observation decay.
We report the results of a search for neutrinoless double-$\ensuremath{\beta}$ decay ($0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$) $^{100}\mathrm{Mo}$, using NEMO-3 detector to reconstruct full topology final state events. With an exposure $34.7\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{y}$, no evidence $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ signal has been found, yielding limit light Majorana neutrino mass mechanism...
Using data from the NEMO-3 experiment, we have measured two-neutrino double beta decay ( $$2\nu \beta $$ ) half-life of $$^{82}$$ Se as $$T_{\smash {1/2}}^{2\nu } \!=\! \left[ 9.39 \pm 0.17\left( \text{ stat }\right) 0.58\left( syst \right] \times 10^{19}$$ y under single-state dominance hypothesis for this nuclear transition. The corresponding matrix element is $$\left| M^{2\nu }\right| = 0.0498 0.0016$$ . In addition, a search neutrinoless $$0\nu using 0.93 kg observed total 5.25 has been...
The NEMO-3 experiment measured the half-life of $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ decay and searched for $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ $^{116}\mathrm{Cd}$. Using 410 g $^{116}\mathrm{Cd}$ installed in detector with an exposure 5.26 y, ($4968\ifmmode\pm\else\textpm\fi{}74$) events corresponding to ground state $^{116}\mathrm{Sn}$ have been observed a signal background ratio about 12. has be...
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well those reached directly at high energy colliders. Discrimination between different models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss current status prospects near future a compelling suite such experiments, along with developments needed encompassing theoretical framework.
SuperNEMO is a double-$\beta$ decay experiment, which will employ the successful tracker-calorimeter technique used in recently completed NEMO-3 experiment. implement 100 kg of isotope, reaching sensitivity to neutrinoless ($0\nu\beta\beta$) half-life order $10^{26}$ yr, corresponding Majorana neutrino mass 50-100 meV. One main goals and challenges detector development programme has been reach calorimeter energy resolution, $\Delta$E/E, around 3%/$sqrt(E)$(MeV) $\sigma$, or 7%/$sqrt(E)$(MeV)...
The BiPo-3 detector, running at the Canfranc Underground Laboratory (Laboratorio Subterr'aneo de Canfranc, LSC, Spain) since 2013, is a low-radioactivity detector dedicated to measuring ultra low natural radionuclide contaminations of 208Tl (232Th chain) and 214Bi (238U in thin materials. total sensitive surface area 3.6 m2. has been developed measure radiopurity selenium double β-decay source foils SuperNEMO experiment. In this paper design performance results background measurements...
We report the results of a first experimental search for lepton number violation by four units in neutrinoless quadruple-$\beta$ decay $^{150}$Nd using total exposure $0.19$ kg$\cdot$y recorded with NEMO-3 detector at Modane Underground Laboratory (LSM). find no evidence this and set lower limits on half-life range $T_{1/2}>(1.1-3.2)\times10^{21}$ y $90\%$ CL, depending model used kinematic distributions emitted electrons.
The anomalous magnetic moment of the muon is one most precisely measured quantities in experimental particle physics. Its latest measurement at Brookhaven National Laboratory deviates from Standard Model expectation by approximately 3.5 standard deviations. goal new experiment, E989, now under construction Fermilab, a fourfold improvement precision. Here, we discuss details future and its current status.
We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize increased proton intensity provided by Fermilab PIP-II upgrade to improve sensitivity for neutrinoless muon-to-electron conversion one order magnitude beyond providing deepest probe charged lepton flavor violation foreseeable future. Mu2e-II will use as much infrastructure possible, providing, where required, improvements apparatus accommodate beam cope with...
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with sensitivity \targetsens, based on vertical rotation polarization stored beam. The New Physics reach is order $10^~3$TeV mass scale. Observation EDM provides best probe CP-violation in Higgs sector, at level that may be inaccessible electron-EDM experiments. improvement $\theta_{QCD}$, parameter crucial axion and dark matter physics, about three orders magnitude.
A systematic search has been undertaken for possible ${\ensuremath{\Sigma}}^{\ensuremath{-}}$ compounds produced by ${K}^{\ensuremath{-}}$ captures in nuclear emulsion. Mass determinations were performed on (a) 15 decays flight into a charged pion and (b) 84 events resulting capture configurations; the number of these single-nucleon is estimated to be >32 but 71. All type all 4 are consistent with interpretation as ${\ensuremath{\Sigma}}^{\ensuremath{-}}$. The discussed detail it...
An observation of Charged Lepton Flavor Violation (CLFV) would be unambiguous evidence for physics beyond the Standard Model. The Mu2e and COMET experiments, under construction, are designed to push sensitivity CLFV in mu e conversion process unprecedented levels. Whether is observed or not, there a strong case made further improving sensitivity, examining on additional target materials. Mu2e-II proposed upgrade Mu2e, with at least an order magnitude rate over Mu2e. approach challenges this...
Abstract The Muon g -2 Experiment at Fermilab uses a gaseous straw tracking detector to make detailed measurements of the stored muon beam profile, which are essential for experiment achieve its uncertainty goals. Positrons from decays spiral inward and pass through before striking an electromagnetic calorimeter. is therefore located inside vacuum chamber in region where magnetic field large non-uniform. As such, must have low leak rate maintain high-quality vacuum, be non-magnetic so as not...
The SuperNEMO experiment will search for neutrinoless double-beta decay (0νββ), and study the Standard-Model process (2νββ). technology can measure energy of each electrons produced in a (ββ) decay, reconstruct topology their individual tracks. spectrum requires very accurate calibration to be carried out periodically. Demonstrator Module calibrated using 42 sources, consisting droplet 207Bi within frame assembly. quality these which depends upon entire ^207Bi being contained frame, is key...
The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed search for neutrinoless double $β$ ($0νββ$) decay. We report final results of a $0νββ$ decays with $6.914$ kg $^{100}$Mo using entire data set detector live time $4.96$ yr, corresponds an exposure 34.3 kg$\cdot$yr. perform detailed study expected background signal region and find no evidence data. level observed $[2.8-3.2]$ MeV is $0.44 \pm 0.13$ counts/yr/kg, events are...