I discuss the stability of the SM scalar potential in view of the discovery of a Higgs boson with mass around 125 GeV. The role played by the top quark mass in the choice between the full stability and the metastability conditions is analyzed in detail. The present experimental value of the top mass do not support the possibility that the SM potential is stable up to the Planck scale but favor an electroweak vacuum sufficiently long-lived to be metastable. PACS 14.80.Bn - Standard-model Higgs bosons. PACS 14.65.jk - Other quarks (e.g., 4th generations). © Società Italiana di Fisica.
Degrassi, G. (2014). The role of the top quark in the stability of the SM Higgs potential. In LC13 Exploring QCD from the infrared regime to heavy flavour scales at B-factories, the LHC and aLinear Collider (pp.47-53). Editrice Compositori s.r.l. [10.1393/ncc/i2014-11735-1].
The role of the top quark in the stability of the SM Higgs potential
DEGRASSI, GIUSEPPE
2014-01-01
Abstract
I discuss the stability of the SM scalar potential in view of the discovery of a Higgs boson with mass around 125 GeV. The role played by the top quark mass in the choice between the full stability and the metastability conditions is analyzed in detail. The present experimental value of the top mass do not support the possibility that the SM potential is stable up to the Planck scale but favor an electroweak vacuum sufficiently long-lived to be metastable. PACS 14.80.Bn - Standard-model Higgs bosons. PACS 14.65.jk - Other quarks (e.g., 4th generations). © Società Italiana di Fisica.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
