J. M. LoSecco
A5057298933- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Computational Physics and Python Applications
- Gamma-ray bursts and supernovae
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Nuclear Physics and Applications
- Radio Astronomy Observations and Technology
- Geophysics and Gravity Measurements
- Quantum, superfluid, helium dynamics
- Black Holes and Theoretical Physics
- Advanced Data Storage Technologies
- Distributed and Parallel Computing Systems
- Laser-Matter Interactions and Applications
University of Notre Dame
2015-2024
Notre Dame of Dadiangas University
2012-2024
Campbell Collaboration
2009-2013
Université de Montréal
2009
University of Naples Federico II
2009
Laboratoire d’Annecy de Physique des Particules
2001-2006
California State University, Dominguez Hills
1997
Iowa State University
1992
Purdue University West Lafayette
1992
University of California, Irvine
1983-1991
The $\ensuremath{\eta}{\ensuremath{\pi}}^{\ensuremath{-}}$ system has been studied in the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}\ensuremath{\eta}{\ensuremath{\pi}}^{\ensuremath{-}}p$ at $18\mathrm{GeV}/c$. A large asymmetry angular distribution is observed indicating interference between $L$-even and $L$-odd partial waves. ${a}_{2}(1320)$ ${J}^{\mathrm{PC}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2}^{++}$ wave, as a broad enhancement 1.2...
A partial-wave analysis of the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}p$ at $18\mathrm{GeV}/c$ has been performed on a data sample 250 000 events obtained by Brookhaven experiment E852. The expected ${J}^{\mathrm{PC}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1}^{++}{a}_{1}(1260)$, ${2}^{++}{a}_{2}(1320)$, and ${2}^{\ensuremath{-}+}{\ensuremath{\pi}}_{2}(1670)$...
We have developed an extensive model of atmospheric ν interactions which provide the backgrounds to nucleon-decay experiments. report results from a 417-live-day exposure Irvine-Michigan-Brookhaven detector. During this time 401 contained events were observed at rate and with characteristics consistent interactions. calculated expected variety two- three-body decay modes set lower limits on many nucleon partial lifetimes.Received 6 June...
Observations were made 1570 meters of water equivalent underground with an 8000-metric-ton Cherenkov detector. During a live time 80 d no events consistent the decay p→e+π0 found in fiducial mass 3300 metric tons. It is concluded that limit on lifetime for bound plus free protons divided by e+π0 branching ratio τB>6.5×1031 yr; τB>1.9×1031 yr (90% confidence). Observed cosmic-ray muons and neutrinos are compatible expectations.Received 13 April...
A partial-wave analysis of the mesons from reaction ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}p$ has been performed. The data show ${b}_{1}\ensuremath{\pi}$ decay spin-exotic states ${\ensuremath{\pi}}_{1}(1600)$ and ${\ensuremath{\pi}}_{1}(2000)$. Three isovector ${2}^{\ensuremath{-}+}$ were seen in...
view Abstract Citations (51) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS An Upper Limit on the Flux of Extraterrestrial Neutrons Svoboda, R. ; Bionta, M. Blewitt, G. Bratton, C. B. Casper, D. Chrysicopoulou, P. Ciocio, A. Claus, Cortez, Dye, S. T. Errede, Foster, W. Gajewski, Ganezer, K. Goldhaber, Haines, J. Jones, Kielczewska, Kropp, Learned, Losecco, Matthews, Park, H. Reines, F. Schultz, Seidel, Shumard, E. Sinclair, Sobel, Stone, L....
A search for superheavy magnetic monopoles "catalyzing" nucleon decay via the reaction $M+N\ensuremath{\rightarrow}M+{e}^{+}+\mathrm{mesons}$ in an undergound water Cherenkov detector has been carried out. No positive evidence such a process found during 100 d of live time. Cross section and velocity-dependent limits on monopole flux are presented which as low ${F}_{m}<7.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}15}$ ${\mathrm{cm}}^{\ensuremath{-}2}$...
A 2.1 kton yr exposure of data from the Irvine-Michigan-Brookhaven detector has yielded 72 atmospheric neutrino events with a vertex contained inside fiducial volume and at least 0.95 GeV visible \ifmmode \check{C}\else \v{C}\fi{}erenkov energy. The ratio these two ratios $(\frac{\mathrm{muon}\mathrm{l}\mathrm{i}\mathrm{ke}}{\mathrm{tota}\mathrm{l}}{)}_{\mathrm{Data}}/(\frac{\mathrm{muon}\mathrm{l}\mathrm{i}\mathrm{ke}}{\mathrm{tota}\mathrm{l}}{)}_{\mathrm{MC}}$ was found to be...
The design and performance of a TOF system used in Fermilab collider experiment is evaluated terms time, mass, spatial resolution. designed to survive high rate background environment. overall time resolution the measured be σ = 110 ps.
A 3045 element lead glass calorimeter and an associated fast trigger processor have been constructed, tested implemented in BNL experiment E852 conjunction with the multi-particle spectrometer (MPS). Approximately, 109 all-neutral neutral plus charged triggers were recorded this apparatus during data runs 1994 1995. This paper reports on construction, testing performance of processor.
We discuss the effects of imperfect photon detectors suffering from loss and noise on reliability linear optical quantum computers. show that for a given detector efficiency, there is maximum achievable success probability, increasing number ancillary photons used one controlled sign flip gate beyond critical point will decrease probability computer function correctly. have also performed simulations some small logic gates estimate efficiency levels required to properly.
Lower partial-lifetime limits for the decay of free proton are obtained in range ${10}^{30}$ to ${10}^{32}$ yr, from a 417-d exposure water Cherenkov detector with fiducial mass 370 metric tons hydrogen. In this time, 401 contained events were observed, at rate consistent atmospheric neutrino interactions. Eleven these compatible both interactions and neutrinoless proton. These results same order magnitude as previously published bound plus protons, but independent models oxygen.
Observers have demonstrated that it is now feasible to measure the cosmic microwave background (CMB) temperature at high redshifts. We explore possible constraints on cosmology which might ultimately be derived from such measurements. In addition providing a consistency check standard and alternative cosmologies, possibilities include inhomogeneity anisotropy of universe intermediate redshift $z\ensuremath{\lesssim}10,$ an independent probe peculiar motions with respect Hubble flow,...
Abstract A device has been developed which is capable of doubling the light collection capability a 5 inch hemispherical photomultiplier tube. Known as “waveshifter plate”, its geometry adaptable to various applications. Its marginal cost small with respect that phototube, it readily removable, and minimum effect upon dark noise timing resolution.
Abstract A cylindrical multiwire drift chamber with axial charge-division has been constructed and used in experiment E852 at Brookhaven National Laboratory. It serves as a trigger element tracking device for recoil protons π p interactions. We describe the chamber's design considerations, details of its construction, electronics, performance characteristics.
The yields and production rates of the radioisotopes $^9$Li $^8$He created by cosmic muon spallation on $^{12}$C, have been measured two detectors Double Chooz experiment. identical are located at separate sites depths, which means they subject to different spectra. near (far) detector has an overburden $\sim$120 m.w.e. ($\sim$300 m.w.e.) corresponding a mean energy $32.1\pm2.0\,\mathrm{GeV}$ ($63.7\pm5.5\,\mathrm{GeV}$). Comparing data detailed simulation decays, contribution radioisotope...
A partial-wave analysis of the reaction π−p→ηηπ−p at 18 GeV/c has been performed on a data sample approximately 4000 events obtained by Brookhaven experiment E852. The JPC=0−+π(1800) state is observed in a0(980)η and f0(1500)π decay modes. It mass 1876±18±16 MeV/c2 width 221±26±38 MeV/c2. JPC=2−+π2(1880) meson decaying through a2(1320)η. 1929±24±18 323±87±43 Both states are potential candidates for non-exotic hybrid mesons.
An improved limit on the flux of magnetic monopoles in vicinity solar system is obtained, assuming that strongly catalyze nucleon decay (the Rubakov-Callan effect). Flux limits are presented for monopole velocities from ${10}^{\ensuremath{-}5}c$ to ${10}^{\ensuremath{-}1}c$ and monopole-nucleon cross sections between ${10}^{\ensuremath{-}27}$ ${\mathrm{cm}}^{2}$ ${10}^{\ensuremath{-}21}$ ${\mathrm{cm}}^{2}$. For a representative velocity...
It has recently been widely recognized that a reactor anti-neutrino disappearance experiment with two or more detectors is one of the most cost-effective ways to extend our reach in sensitivity for neutrino mixing angle theta-13 without ambiguities from CP violation and matter effects. The physics capabilities new together superbeams factories have also studied but these latter are considered by many be ambitious projects due their higher costs, hence farther future. We propose contribute an...