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- W5376588 abstract "We consider pair production and decay of fundamental unstable particles in the framework of a modified perturbation theory (MPT), which treats resonant contributions of unstable particles in the sense of distributions. The cross-section of the process is calculated within the NNLO of the MPT in a model that admits exact solution. Universal massless-particles contributions are taken into consideration. The calculations are carried out by means of FORTRAN code with double precision, which ensures per mille accuracy of computations. A comparison of the outcomes with the exact solution reveals an excellent convergence of the MPT series at the energies close to and above the maximum of the cross-section. Near the maximum of the cross-section the discrepancy of the NNLO approximation makes up a few per mille." @default.
- W5376588 created "2016-06-24" @default.
- W5376588 creator A5032938721 @default.
- W5376588 date "2010-06-20" @default.
- W5376588 modified "2023-09-27" @default.
- W5376588 title "Unstable-particles pair production in modified perturbation theory in NNLO" @default.
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- W5376588 hasPublicationYear "2010" @default.
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