| Texto completo | |
| Autor(es): |
Das, Arindam
;
Mandal, Sanjoy
;
Shil, Sujay
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 108, n. 1, p. 42-pg., 2023-07-20. |
| Resumo | |
We investigate the possibilities of probing the electroweak scale seesaw scenarios such as type-I, type-II, and type-III seesaw at e-gamma and gamma gamma colliders. For the case of type-I seesaw, the heavy neutrinos can be produced at e- gamma colliders in association with a W boson. We study a variety of final states in this case, including single and multilepton modes in association with jets to estimate bounds on the light-heavy neutrino mixing angle. In case of type-II seesaw, doubly charged multiplets of the SU(2)L triplet scalar can be produced in pair at gamma gamma collider. We study the multileptonic decay modes coming from this pair production of doubly charged Higgs and show how one can probe neutrino mass hierarchy. We also study same-sign W boson production from the doubly charged Higgs to study multilepton modes in association with missing energy. From the type-III seesaw, we study same-sign dilepton + jets and trilepton + jets modes at e-gamma collider which are coming from the neutral and charged component of the triplet fermion in association with a W boson and a Z boson, respectively. Due to the existing limits on the triplet fermions from the LHC we choose heavier mass so that the gauge boson originating from the decay of a neutral multiplet can be sufficiently boosted producing a fat-jet signature in association with same-sign dilepton and trilepton. Finally, we estimate bounds on the light neutrino-heavy triplet fermion mixing angle and compare them with the existing bounds. (AU) | |
| Processo FAPESP: | 21/09547-9 - Fenomenologia do Large Hadron Collider |
| Beneficiário: | Sujay Shil |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |