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The scalar sector of $SU(2)$ gauge theory with $N_F=2$ fundamental flavours

We present a first non perturbative study of the flavour singlet scalar and pseudoscalar spectrum of $SU(2)$ gauge theory with two fundamental Dirac flavours. This theory provides a minimal template for a wide class of Standard Model extensions featuring novel strong dynamics. After having discussed...

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Detalles Bibliográficos
Autores principales: Drach, Vincent, Janowski, Tadeusz, Pica, Claudio, Rantaharju, Jarno, Sannino, Francesco
Lenguaje:eng
Publicado: SISSA 2017
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.256.0229
http://cds.cern.ch/record/2315115
Descripción
Sumario:We present a first non perturbative study of the flavour singlet scalar and pseudoscalar spectrum of $SU(2)$ gauge theory with two fundamental Dirac flavours. This theory provides a minimal template for a wide class of Standard Model extensions featuring novel strong dynamics. After having discussed our computational method, we present our new results for the $\sigma$, $\eta '$ and $a_0$ states. We evaluate the relevant disconnected contributions and ob tain benchmark results that are crucial input for model building. This work summarises our recent contribution.