رکورد قبلیرکورد بعدی

" Flavor conserving, flavor changing radiative decays of vector mesons in quark model "


Document Type : Latin Dissertation
Language of Document : English
Record Number : 1112623
Doc. No : TLpq230756270
Main Entry : E.-A. El-Hassan
Title & Author : Flavor conserving, flavor changing radiative decays of vector mesons in quark model\ E.-A. El-Hassan
College : King Fahd University of Petroleum and Minerals (Saudi Arabia)
Date : 1991
student score : 1991
Degree : M.S.
Page No : 103
Abstract : A relativised quark model appropriate to a universal one-gluon exchange plus a screening confining potential motivated by lattice gauge theory was used in studying flavor changing radiative decays of B meson: usd\rm B \to K\sp* + \gamma.usd Recoil as well as relativistic corrections were included in evaluating the form factor. Compared to other predictions, numerical computations showed that the ratio of exclusive usd(\rm B \to K\sp* + \gamma)usd to inclusive usd(\rm b \to s + \gamma)usd processes is reduced by introducing screening potential. The above model was extended to flavor conserving radiative decay of ground states mesons usd\rm V(1\sp-) \to P(O\sp-) + \gamma.usd Here the relativistic corrections are more important than the recoil effects while in B decay opposite is the case. Fitting the predicted decay rates with experimental results provides information about the strong interaction at large distances as one can fix the screening length in fitting the data for these decays. It was found that the screening length increases as we move to light sector.
Subject : Particle physics
: Pure sciences
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