Papers by Barbara Szczerbinska
A versatile radioactivity-screening facility is crucial to the DUSEL program, as most of the prop... more A versatile radioactivity-screening facility is crucial to the DUSEL program, as most of the proposed physics experiments will deal with rare-occurring processes that could be concealed by natural or induced radioactivity from the experimental devices and environment. A State of South Dakota EPSCOR proposal has been submitted to establish a counting facility in the Homestake mine, at the 4,800 ft u.g. level, as part of the early implementation program (SUSEL, Sanford Laboratory). The facility will have dedicated stations for ultra-low level gamma counting, as well as general purpose and high throughput screening stations. The facility will also couple to other underground science initiatives such as underground manufacturing, clean material selection and stockpile etc. The detector resources can be utilized for certain physics measurements as well.
Reliable estimates of neutrino-nucleus reactions in the resonance-excitation region play an impor... more Reliable estimates of neutrino-nucleus reactions in the resonance-excitation region play an important role in many of the on-going and planned neutrino oscillation experiments. We study here neutrino-nucleus reactions in the delta-particle excitation region with the use of neutrino pion-production amplitudes calculated in a formalism in which the resonance contributions and the background amplitudes are treated on the same footing. Our approach leads to the neutrino-nucleus reaction cross sections that are significantly different from those obtained in the conventional approach wherein only the pure resonance amplitudes are taken into account. To assess the reliability of our formalism, we calculate the electron-nucleus scattering cross sections in the same theoretical framework; the calculated cross sections agree reasonably well with the existing data.
In this document, we describe the wealth of science opportunities and capabilities of LBNE, the L... more In this document, we describe the wealth of science opportunities and capabilities of LBNE, the Long-Baseline Neutrino Experiment. LBNE has been developed to provide a unique and compelling program for the exploration of key questions at the forefront of particle physics. Chief among the discovery opportunities are observation of CP symmetry violation in neutrino mixing, resolution of the neutrino mass hierarchy, determination of maximal or near-maximal mixing in neutrinos, searches for nucleon decay signatures, and detailed studies of neutrino bursts from galactic supernovae. To fulfill these and other goals as a world-class facility, LBNE is conceived around four central components: (1) a new, intense wide-band neutrino source at Fermilab, (2) a fine-grained `near' neutrino detector just downstream of the source, (3) the Sanford Underground Research Facility (SURF) in Lead, South Dakota at an optimal distance (~1300 km) from the neutrino source, and (4) a massive liquid argon ...
Chiral restoration at finite temperatures is studied in chiral quark models with non-local regula... more Chiral restoration at finite temperatures is studied in chiral quark models with non-local regulators. At the leading-N_c level we find transition temperatures of the order of 100MeV. Meson-loop contributions are also analyzed and found to have a very small effect.
Physics Letters B, 2007
Reliable estimates of neutrino–nucleus reactions in the resonance–excitation region play an impor... more Reliable estimates of neutrino–nucleus reactions in the resonance–excitation region play an important role in many of the on-going and planned neutrino oscillation experiments. We study here neutrino–nucleus reactions in the delta-particle excitation region with the use of neutrino pion-production amplitudes calculated in a formalism in which the resonance contributions and the background amplitudes are treated on the same footing. Our
In early 2010, the Long-Baseline Neutrino Experiment (LBNE) science collaboration initiated a stu... more In early 2010, the Long-Baseline Neutrino Experiment (LBNE) science collaboration initiated a study to investigate the physics potential of the experiment with a broad set of different beam, near-and far-detector configurations. Nine initial topics were identified as scientific areas that motivate construction of a long-baseline neutrino experiment with a very large far detector. We summarize the scientific justification for each topic and the estimated performance for a set of far detector reference configurations. We report also on a study of optimized beam parameters and the physics capability of proposed Near Detector configurations. This document was presented to the collaboration in fall 2010 and updated with minor modifications in early 2011.
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Papers by Barbara Szczerbinska