Determination of the top quark mass through the measurement of the\frac{{\Gamma ({\rm Z} \to b\bar b)}}{{\Gamma _{hadr} - \Gamma (Z \to b\bar b)}} ratio at high luminosity LEP |
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Authors: | J M Benlloch E Cortina A M Llopis J Salt C De la Vaissière |
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Institution: | 1. Institute for Theoretical Physics III, University of Erlangen-Nürnberg, Staudtstrasse 7, W-8520, Erlangen, Germany
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Abstract: | We investigate a possible role of invariant (the integral of motion) in nonstationary field theory by employing an explicit example of a scalar field interacting with a time-dependent external electromagnetic field. We show how in a unique manner the invariant operator leads to the particle concept in the Schrödinger picture. This approach gives an intermediate connection between the operator and functional-Schrödinger-equation formalisms. An application to the problem of particle creation is also discussed briefly. |
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