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Showing 1 to 4 of 4 for “"perturbative calculations"”.
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Perturbative calculations and the top quark
Submitted by Elizabeth Kent (eckent2@illinois.edu) on 2012-05-17T17:34:22Z No. of bitstreams: 1 1998_Smith.pdf: 1562557 bytes, checksum: 155cebb27389d86711a7d7d56bea2899 (MD5)
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Automating methods to improve precision in Monte-Carlo event generation for particle colliders
… experiments. It focuses on fixed order perturbative calculations, i.e. on matrix elements and scattering cross sections at leading and next-to-leading order. For the leading order a number of algorithms for the matrix element generation and the numeric integration over the phase space …
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Exploring QCD Factorization at Moderate Energy Scales
… range of scales. Thus, it is necessary in QCD calculations to utilize a factorization scheme to separate a process into perturbative and non-perturbative factors. This separation relies on an assumption that one energy scale is infinitely larger than the other scales involved in the process. …
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Bödeker's Effective Theory: From Langevin Dynamics to Dyson-Schwinger Equations
… gauge fields at high temperature is non-perturbative if the characteristic momentum scale is of order |k| \sim g^2 T. Such a situation is typical for the processes of electroweak baryon number violation in the early Universe. Bödeker has derived an effective theory that describes the …