Tipo di tesi
Tesi di laurea magistrale
Titolo
Scalar Leptoquarks as Goldstone Bosons
Parole chiave
- Beyond the Standard Model Physics
- Leptoquarks
- Pati-Salam symmetry
- Standard Model Effective Field Theory
Data inizio appello
27/03/2023
Consultabilità
Non consultabile
Data di rilascio
27/03/2093
Riassunto (Italiano)
Our research focuses on extensions of the SM that, with the addition of the right-handed neutrino, leaving unchanged the gauged symmetry group of the Standard Model, exhibits an approximate Pati-Salam global symmetry, assigning a single fourth color to every leptonic family. Our request is that it must break spontaneously, directly or in two steps, into the SM’s global broken group, with the
Custodial Symmetry already broken in its vectorial subgroup. This symmetry breaking generates scalar Leptoquarks as Goldstone bosons, instead of gauge vectors as in the local version proposed by J. C. Pati and A. Salam in the 1970s. Taking our BSM theory, we calculate the one-loop corrections to the Peskin-Takeuchi parameter T, in order to compute the Custodial Symmetry breaking. Then, we will explore the use of Standard Model Effective Field Theories, in order to create projections for leptoquarks masses from the estimation of some Wilson coefficient coming from the Yukawa sector.
