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A Study Of Data/Monte Carlo Agreement In Charmed Baryon Decays At Belle Ii, Kaitlyn Thurmond
A Study Of Data/Monte Carlo Agreement In Charmed Baryon Decays At Belle Ii, Kaitlyn Thurmond
Honors Theses
The Belle II experiment at the SuperKEKB electron-positron accelerator facility in Tsukuba, Japan has a primary goal of searching for new physics beyond the Standard Model of particle physics. Extremely precise measurements of particle decays will be compared with Standard Model predictions in order to expose the presence of new particles and interactions. These measurements are prepared using simulated samples to avoid potential biases when studying the data. The Belle II collaboration produces two types of simulated samples for this purpose. One is produced with consistent calibration payloads and another with payloads calibrated as a function of data taking. This …
An Analysis Of Detection Asymmetry Using Baryon Decays In Belle Ii, Matthew Mestayer
An Analysis Of Detection Asymmetry Using Baryon Decays In Belle Ii, Matthew Mestayer
Honors Theses
The purpose of this study was to determine the detection asymmetry of the Belle II detector using decays of two common baryons, Λ0 → ��π- and Σ+ → ��π0. A Monte Carlo simulation of both decays was used to determine the validity of signal isolation criteria. These criteria were then applied to the Belle II data, allowing for a comparison of the detection asymmetry in the data relative to the simulation. The results show a moderate detection asymmetry when using the Λ0 → ��π- decay, particularly for forward-going baryons. For the Σ+ …
A Performance Analysis Of The Belle Ii Detector, John Stacy
A Performance Analysis Of The Belle Ii Detector, John Stacy
Honors Theses
The Belle II experiment has recently (2018) started data taking at the SuperKEKB electron-positron collider in Tsukuba, Japan. Detector performance studies are necessary to understand early data and prepare for more complex analyses. This study of the proton detection efficiency of the Belle II detector compares real and simulated data to find discrepancies with the intention to provide useful information for detector and calibration experts to better gauge detector performance. It also attempts to improve the characterization of proton identification efficiency at low momenta, which performs poorly under the current fitting model. This helps analysts exploring final states that include …
Monte Carlo Study Of Lepton Flavor Universality Violation In B Decays With Belle Ii Simulation, Sakul Mahat
Monte Carlo Study Of Lepton Flavor Universality Violation In B Decays With Belle Ii Simulation, Sakul Mahat
Honors Theses
Belle II, the first super B-Factory experiment, is designed to make precise measurements of weak interaction parameters and search for New Physics beyond the Standard Model of particle physics. The Standard Model of particle physics is a theory that classifies all known elementary particles and describes three of the four known fundamental forces in the universe. Physics beyond the Standard Model that addresses the theoretical developments needed to explain the deficiencies in the Standard Model is often referred to as New Physics. One of the assumptions of the Standard Model is that the couplings of particles that mediate the weak …
Investigation Of Narrow Bipolar Events In Mississippi Thunderstorms, Sampath Asiri Bandara
Investigation Of Narrow Bipolar Events In Mississippi Thunderstorms, Sampath Asiri Bandara
Electronic Theses and Dissertations
In the first part of the study FA and Log-RF data were used to examine low-altitude (<8.0 km) negative NBEs (NNBEs) to see how many -CG flashes were initiated by NNBEs. Out of 686 -CG flashes only 33 (5%) flashes were initiated by an NNBE. These NNBEs occurred at an average altitude of 6.2 km had average amplitude (range-normalized amplitude to 100 km) of 0.4 V/m and had average VHF (Log-RF) power of 130 W. Since the low-altitude NNBEs were substantially weaker than positive NBEs that initiate intracloud (IC) flashes it is hypothesized that -CG flashes are easier to initiate than IC flashes. The second part of the study investigated the properties of 201 positive NBEs (+NBEs). The +NBEs were classified in two ways: into Types A-D [Karunarathne et al. 2015] and into three different groups: Isolated Not-isolated and IC flash-initiator or INBE [Wu et al. 2014]. The average VHF (Log-RF) power of NBEs within the A-D categories were 1.9 4 9.8 and 13.2 kW respectively while the powers for the Isolated Not-isolated and INBE categories were 10.1 4 and 10.1 kW respectively. The third study considered 34 NBEs that occurred close in space and time to each other: 13 pairs of NBEs one group of three +NBEs and one group of five +NBEs. The NBEs were overlaid on radar data of the parent thunderstorms. The data indicate that the individual NBEs in each group initiated in separate intense electric field regions of small extent rather than in a single large-scale electric field region. This dissertation investigates Narrow Bipolar Events (NBEs) which are a type of short-duration (10- 30 µs) lightning discharge. The study primarily used data from NBEs collected in 2016 at seven sensor sites within 50 km of Oxford Mississippi USA. Each sensor site had three electromagnetic antennas called Fast Antenna (FA) dE⁄dt and Log-RF with bandwidths of 0-2.5 MHz 0-1.0 MHz and 186-192 MHz respectively. NBEs are often isolated from other lightning events in thunderclouds but they sometimes initiate negative cloud-to-ground (-CG) and intracloud (IC) lightning flashes or they can occur during these flashes.
The Temporal Conatus And The Problem Of Motion From Eternity, David Harmon
The Temporal Conatus And The Problem Of Motion From Eternity, David Harmon
Electronic Theses and Dissertations
Spinoza’s theory of persistence is articulated through the conatus (EIp7) and the ratio of motion and rest (EIIp13). Section I explores Spinoza’s usage of “motion,” and illustrates that the conatus is essentially temporal. From this claim and Spinoza’s conception of eternity, the problem arises. I explain this as a contradiction between Natura naturata and Natura naturans. Section II features an evaluation of the potential acosmist solution and reveals how it contradicts other Spinozistic commitments. I construct an alternative solution in Section III. Temporal passage is not an adequate idea for Spinoza. However, Spinoza considers duration to be a feature of …
Mississippians In Physics: Perspectives And Practice In A Search For Physics Excellence, Paul D. Rogers
Mississippians In Physics: Perspectives And Practice In A Search For Physics Excellence, Paul D. Rogers
Electronic Theses and Dissertations
This mixed-method study represents a broad evaluation of the physics views of Mississippi physics students and physicists, along with an analysis of graduate school data, in a search for answers which might improve physics education in Mississippi. Descriptive statistics were calculated using data from eight graduate degree programs (from Fall 2003 through Full Summer 2012) at the University of Mississippi. This was done to find the percent of graduate degrees in each degree program which were awarded to in-state residents. It was found that of the eight University of Mississippi graduate degree programs in the study, two programs awarded a …