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Articles 1 - 5 of 5
Full-Text Articles in Physics
Search For A Dark Leptophilic Scalar Produced In Association With Taupair In Electron-Positron Annihilation At Center-Of-Mass Energies Near 10.58 Gev., Diptaparna Biswas
Search For A Dark Leptophilic Scalar Produced In Association With Taupair In Electron-Positron Annihilation At Center-Of-Mass Energies Near 10.58 Gev., Diptaparna Biswas
Electronic Theses and Dissertations
Dark matter is believed to be a form of matter which seemingly accounts for approximately 85% of the matter in the universe and about 27% of its total mass–energy density. It doesn't participate in electromagnetic interaction, i.e. doesn't interact with light. Consequently, we cannot see it using optical or radio telescope and hence the name dark matter. However, it participates in gravitational interaction, and we hypothesize its existence based on a variety of astrophysical observations, including gravitational effects, that cannot be explained by the accepted theories of gravity unless we account for more matter than can be perceived through electromagnetic …
Study Of Neutral Hadron Production In A High Intensity Particle Physics Experiment., Jake W. Berg
Study Of Neutral Hadron Production In A High Intensity Particle Physics Experiment., Jake W. Berg
Electronic Theses and Dissertations
In this dissertation I present independent measurements of the multiplicities, R, of π0 and η mesons produced in annihilation interactions of electrons and positrons at a center-of-mass energy of 10.54 GeV. Data were collected using the BaBar detector at the PEP-II storage rings located at the SLAC National Accelerator Laboratory in Menlo Park, California. Both mesons have a decay mode to two photons, which is used to identify them and measure their production per event. I find R(π0) = 2.8±0.3 per event and R(η) = 0.25±0.03 per event. I also present my contributions to …
Search For New Physics Using Lepton Flavor Violating Signatures In Modern Particle Colliders., Atanu Pathak
Search For New Physics Using Lepton Flavor Violating Signatures In Modern Particle Colliders., Atanu Pathak
Electronic Theses and Dissertations
Charged lepton flavor violation is a clear signal of new physics. Such decays are not allowed in the Standard Model but highly anticipated in a large class of new physics models. A direct search for lepton flavor violation in decays of the Higgs boson with the ATLAS detector at the LHC is presented here. The analysis is performed in the H → l tau channel, where the leading lepton (l) can be either an electron or a muon, and the tau lepton decays into an opposite flavored lighter lepton or via the hadronic decay channel. Published results of this search …
A Study On Radiative Pion Capture As A Source Of Background In The Search For Muon To Electron Conversion At The Mu2e Experiment., Joseph Leibson
A Study On Radiative Pion Capture As A Source Of Background In The Search For Muon To Electron Conversion At The Mu2e Experiment., Joseph Leibson
Electronic Theses and Dissertations
The following thesis will cover the process of radiative pion capture in the Mu2e experiment at Fermi National Accelerator Laboratory. Radiative pion capture (RPC) is a process that is able to mimic the signal of an electron spawned from the neutrino-less conversion of a muon. In this paper we will discuss the current Standard Model accepted by physicists, and discuss charged lepton flavor violation, which is the motivation behind Mu2e. This paper will cover the theory behind Mu2e and RPC, as well as the apparatus involved in the Mu2e experiment. Next, software and simulations used to carry out the RPC …
A Study Of The Radiative Pion Capture Process As A Background To The Search For Muon To Electron Conversion With The Mu2e Experiment., Jacob Colston
A Study Of The Radiative Pion Capture Process As A Background To The Search For Muon To Electron Conversion With The Mu2e Experiment., Jacob Colston
Electronic Theses and Dissertations
This thesis will introduce radiative pion capture (RPC), a process which can produce a fake signal in a search for the coherent conversion of a muon to an electron in the presence of a nucleus. There will be a brief introduction to standard model (SM) physics, as well as some more in-depth discussion of the relevant high energy physics at the Mu2e experiment. We will discuss charged lepton flavor violation (CLFV), as well as Supersymmetry, which predicts CLFV at higher intensities than the SM prediction. A description of the RPC process follows, including the external and internal conversions in pion …