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Showing 1 to 6 of 6 for “"weak decays"”.
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Lattice QCD determination of weak decays of B mesons
… outlining quantum chromodynamics and electroweak theory, and then illustrating the procedure of gauge fixing, the quantum effective action and background field gauge which is required for subsequent perturbative work. Details of the basic methodology of lattice quantum field theory are given …
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Weak decays of beautiful pseudoscalar mesons with Lattice Quantum Chromodynamics
Weak decays of beautiful mesons can be used to probe the validity of our best model of particle physics: the Standard Model. In this thesis, I use specialised techniques to overcome practical challenges associated with the large mass of valence $b$ quarks to study a selection of decays of $B$ …
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Suppression of High Transverse Momentum Charged Hadrons in Au+Au Collisions at 200 GeV Nucleon-Nucleon Center of Mass Energy
… sources such as photon conversions and weak decays, which mimic high $p_T$ particles, have limited the measurement of charged hadrons to $p_T < 10$ GeV/c at PHENIX. The newly installed silicon vertex tracker upgrade (VTX) can reject this background allowing the measurement of the charged …
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Search For Cp Violation In Singly Cabibbo-Suppressed Charm Decays
… 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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Kinematic fitting of detached vertices
… first reconstructing the X- particle through its weak decays, X- → pi- and &Lgr; → ppi -. A kinematic fitting routine was developed to reconstruct the detached vertices of these decays, where confidence level cuts on the fits are used to remove background events. Prior to fitting these …
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Identified particle transverse momentum distributions from AU + AU collisions at 62.4 GeV per nucleon pair
… effects, including feed-down from weak decays. At PT 3 GeV/c, protons are measured to be the dominant species of charged hadrons and scale much faster with respect to collision centrality than mesons. This behaviour at 62.4 GeV is found to be remarkably similar to that observed in …