Thesis (Ph. D.)--University of Chicago, Dept. of Physics, June 2002. / Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D.)--University of Washington, 2005. / Vita. Includes bibliographical references (p. 167-177).

Thesis (Ph. D.)--University of Hawaii at Manoa, 2002. / In title the word pi is represented by the Greek symbol. Includes bibliographical references (leaves 104-107). Also available on microfiche.

Résumé indisponible / Résumé indisponible

In this exploratory study, 35 male professionals who had successfully completed residential sex addiction treatment were surveyed. Respondents’ median age was 47.5, and reported ethnicities were White (89%), Asian, (9%) and Hispanic (2%). Prior to intake, 17 respondents had reportedly violated sexual boundaries with patients, clients, or staff (BV group) and 18 reportedly had not (NBV group). Respondents completed a demographic information form and two validated instruments: (a) Sexual Symptom Assessment Scale (S-SAS), measuring symptom severity of Compulsive Sexual Behavior (CSB); and (b) Boundary Violation Index (BVI), assessing frequency of risk factors for Sexual Boundary Violation (SBV). Respondents reported a very large decrease in CSB symptom severity over time (partial 2 = .856), change that was statistically equal for respondents in the BV and NBV groups. Furthermore, respondents reported a large decrease in SBV risk over time (partial 2 = .620); however, the BV group reported a greater decrease in SBV risk than the NBV group (partial 2 = .221). Reductions in both CSB symptoms and SBV risk were stable over time, up to five years post discharge. CSB symptoms and SBV risk were not correlated at retrospective pre-treatment, but for practical purposes, were moderately correlated at post treatment (r = 0.386, n = 25, p = 0.057). Although not significant, correlation at pre-treatment was more than twice as strong for the BV group than for the NBV group. Days of Treatment was a meaningful, although non-significant, contributor to decreases in CSB symptom severity (? = -.323). Similarly, Days of Treatment (? = -.785), Counseling (? = -.303), Recovery Support (? = -.292), and Continuing Education (? = -.259) were meaningful, although non-significant, contributors to decrease in SBV risk. At study participation, 77.1% of respondents had reportedly retained their professional licenses, although 15.4% reported having received a new licensing board complaint. Clinical and professional implications, limitations, and areas for future research are discussed.

Decays of B mesons to three-body charmless final states probe the properties of the weak interaction through their dependence on the complex quark couplings in the CKM matrix. They also test dynamical models for hadronic B decays. Based on a sample of 772 million BB pairs collected by the Belle experiment, we present a study of direct CP violation in the decay of charged B to three charged pions. / Ph. D.

The NPDGamma Experiment is used to study the n + p to d + g reaction for the purpose of examining the hadronic weak interaction. The nucleon-nucleon interaction is overwhelmingly mediated by the strong force, however, the weak part can be extracted by a study of its parity violating manifestations. When neutrons are incident on protons, deuterons and 2.2 MeV gamma rays are produced. If the incoming neutrons are polarized, the parity violating weak interaction gives rise to a measured spatial asymmetry, Ag, in the outgoing gamma rays, as sn · kg is parity odd. At low energies, the weak nucleon-nucleon interaction can be modeled as meson exchange and characterized with six parameters. NPDGamma is sensitive to one of these parameters, hp. Previous measurements that extrapolate hp from more complicated interactions disagree, and disagree with the theoretical reasonable range. Additionally, a previous iteration of the NPDGamma Experiment performed at Los Alamos National Lab was statistics limited in its measurement of Ag. For this reason, a new measurement was performed at the high neutron flux Spallation Neutron Source at Oak Ridge National Lab. In the experiment, a high flux of cold neutrons was polarized to ~ 95% by a supermirror polarizer, the spins flipped in a defined sequence by a radio-frequency spin rotator, and then the neutrons captured on a 16 L liquid para-hydrogen target, which emits gamma-rays asymmetrically upon capture. The gamma-rays are detected in a 3pi array of 48 CsI crystal detectors. This thesis discusses the NPDGamma Experiment in detail, and includes an analysis of subset of the NPDGamma data that has unique timing and data acquisition properties that preclude it being analyzed with the combined data set. Ag was extracted with a result of (6.254 ± 37.694) × 10-9

No description available.

LHCb is a high-precision experiment dedicated to measuring the decays of B hadrons. Particle identification at LHCb relies upon two Ring Imaging Cherenkov (RICH) detectors, and this thesis describes work carried out relating to these detectors. It includes an analysis performed to investigate ion feedback in the Hybrid Photon Detectors (HPDs) used as photosensors for the RICH system, and studies of the performance of a RICH prototype in test beam conditions. A time alignment system for the RICH detectors has been designed and implemented, and this work is presented here. Excellent particle identification performance is required for efficient reconstruction of the b → s penguin decay B0s → ØØ a channel in which visible New Physics effects are possible. An analysis of this decay has been performed, encompassing event selection at trigger and offline levels, resolution, tagging and acceptance studies, and toy monte carlo experiments on sensitivity and systematic errors in measuring the total weak phase. The results are discussed within.

The LHCb experiment (CERN) will offer a precise hadronic probe with which to study CP violation, rare decays and possible New Physics (NP) effects occurring in the b-system. Contained within the vast physics program is a dedicated and intense effort to measure the CP violating weak mixing phase, βs. This phase, observable in the neutral Bs-system, presents a sensitive indicator to NP occurring at the TeV scale. This phase appearing through the theoretically clean ¯b → ¯cc¯s quarklevel transition, can be measured precisely using Bs → J/ψφ decays. The analysis of Bs → J/ψφ decays requires using its decay angular information to separate out the CP eigenstates. The sensitivity to βs can then be extracted from the angular differential rates for this mode. This thesis presents the selection and reconstruction of this decay channel, analysis of the background specific to this channel and the method for fitting the data to extract βs. Previous studies within the collaboration have shown the βs sensitivity using a reduced angular expression for the decay rates. By studying the full angular expression, we find both a quantitative and qualitative improvement in the precision with which βs is obtained: the precision improves by approximately 20%, from ± 0.027 to ± 0.022 radians. In addition, we find it is possible to extract the b-tagging parameter from data itself, which aids to minimise the overall systematic effect. This thesis, in preparation for data taking at the LHCb, presents this expected improvement in measuring βs.