2011/06/03 by Aqeel Ahmed, Ahmed, Aqeel
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1106.0740
41 Pages, 5 figures, M.Phil Thesis
arxiv created 2011/06/03 · openalex publication_date 2011/06/03 · arxiv updated 2011/06/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A study of the decay channels Lambdab-->Lambda V, where V is a vector meson (1-), has been done by putting together kinematical and dynamical analysis. An intensive use of the helicity formalism is involved on the kinematical side, while on the dynamical side, Heavy Quark Effective Theory (HQET) is applied to calculate the hadronic matrix elements between the baryons Lambdab and Lambda. The branching ratios(BR) and helicity asymmetry parameters (alphaAS) for Lambdab --> Lambda J/psi, Lambdab --> Lambda rho0 and Lambdab --> Lambda omega have been calculated. Since both the decay products are polarized, so they offer interesting opportunities to perform tests of time reversal, CP violation and of CPT invariance. A model independent parametrization is done via spin density matrix of the angular distribution, polarizations and some of polarization correlations of the decay products. The transverse component of the polarization and two polarization correlations are sensitive to time reversal violations. Moreover several CP- and CPT-odd observables are pointed out.