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MENLO_PARC, a program for \(e^+e^-\to 4\) jets at next-to-leading order. (English) Zbl 0940.81047
Summary: \(\text{MENLO}_- \text{PARC}\) is a general purpose Monte Carlo program for calculating the next-to-leading order \({\mathcal O}(\alpha^3_s)\) correction to four-jet quantities in electron-positron annihilation. Any quantity which can be constructed out of the four jet momenta and which is insensitive to the quark helicities and the beam orientation can be computed. Both virtual photon and \(Z\) intermediate states (and \(\gamma-Z\) interference) are included, hence the quantities can be computed for arbitrary center of mass energies. The cancellation of real and virtual singularities is achieved using a general version of the subtraction method. The only approximation which has been made is the neglect of the light quark masses and terms which are suppressed by \(1/m^4_{\text{top}}\) or higher powers of the top quark mass.

MSC:
81V45 Atomic physics
81T15 Perturbative methods of renormalization applied to problems in quantum field theory
81-04 Software, source code, etc. for problems pertaining to quantum theory
81-08 Computational methods for problems pertaining to quantum theory
Software:
MENLO_PARC
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References:
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