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Showing 1 to 8 of 8 for “"CP Asymmetry"”.
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Measurement of CP asymmetry in [beta] --> [sigma] [gamma] decays using a sum of exclusive final states
In this thesis, I describe a study of the CP asymmetry in [beta] --> [sigma] [gamma] decays. This CP asymmetry is expected to be less than 0.01 in the Standard Model, but could be enhanced up to the order of 0.10 by non-Standard Model contributions. We use a sample of 383 x 106 BB events collected …
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Measurement of direct CP asymmetry in B± → J/ K± decays produced in pp̅ collisions at √s = 1.96TeV
A measurement of direct CP asymmetry is performed using 6fb−1 of pp̄ collisions at √s = 1.96TeV from the CDF detector at the Fermi National Accelerator Laboratory. Approximately 80,000 B− → J/ K− (and charge conjugate) events were selected on the dimuon trigger and the yields were determined using …
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Measurement of the CP Asymmetry in Semimuonic B Decays Produced in Proton-Antiproton Collisions at Center of Mass Energy= 1.96 TeV
We measure the asymmetry between positive and negative same-sign muon pairs originating from semileptonic decays of pairs of B hadrons. Low transverse momentum dimuon pairs are evaluated to determine B hadron content using a log likelihood fit to two-dimensional impact parameter significance …
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Search for CP violation in D-meson decays
… confidence level is set on the magnitude of the CP asymmetry Acp for the CP eigenstate no -+ K+ K-. This falls within the preexisting limit of .45 @90% CL set by FNAL experiment E691 using the same decay. The first measurement of Acp is made for two other CP eigenstates, no -+ K2 K2 and no -+ …
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Search For Cp Violation In Singly Cabibbo-Suppressed Charm Decays
<p>CP violation in singly Cabibbo-Suppressed (SCS) weak decays of charged D mesons is predicted in the Standard Model (SM) to have asymmetries on the order of $10^{-3}$. $CP$ violation has not yet been observed in the Charm sector; however, the BaBar experiment now has extremely large data samples …
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Search for CP violation in D-meson decays
… confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment E687 using the same decay. The first measurement of $A\sb{cp}$ is made for two other CP eigenstates, …
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SUSY Seesaw model and phenomenological implications for leptonic processes at low energies and leptogenesis
… parameters of thermal leptogenesis, such as the CP asymmetry in the decays of the lightest right-handed Majorana neutrino, provide probes of the unknown complex orthogonal R-matrix of the seesaw model.
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Doubly charmed B decays with the LHCb experiment
$CP$ violation is a necessary ingredient to create a matter-antimatter asymmetry. However, the amount of $CP$ violation incorporated in the Standard Model is orders of magnitude too small to explain the observed asymmetry. This thesis documents two studies of $CP$ violation with doubly charmed $B$ …