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Similarity and Differences between the Radion and Higgs Boson Production and Decay Processes Involving Off-Shell Fermionsстатья
- Авторы: Boos E.E., Keizerov S.I., Rakhmetov E.R., Svirina K.S.
- Журнал: Physics of Atomic Nuclei
- Том: 78
- Номер: 13
- Год издания: 2015
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- DOI: 10.1134/S1063778815130050
- Аннотация: The radion is a scalar particle that occurs in brane world models and interacts with the trace of the energy–momentum tensor of the Standard Model (SM). The radion–SM fermion interaction Lagrangian differs from the Higgs boson–fermion interaction Lagrangian for off-shell fermions. It is shown that all additional, as compared to the Higgs boson, contributions to the amplitudes of radion production and decay processes involving off-shell fermions are canceled out for both massless and massive fermions. Thus, additional terms in the interaction Lagrangian do not change properties of these processes for the radion and the Higgsboson, except for the general normalization factors. Thissimilarity is a consequence of gauge invariance for the processes with production of gauge bosons. When anadditional scalar particle is produced, there are no apparent reasons for the above cancellation, as confirmed, for example, by the process with production of two scalar particles, which features an additional contribution of the radion in comparison with the Higgs boson.
- Добавил в систему: Свирина Ксения Сергеевна