| Article | |
| Report number | arXiv:1205.6497 ; CERN-PH-TH-2012-134 ; RM3-TH-12-9 |
| Title | Higgs mass and vacuum stability in the Standard Model at NNLO |
| Author(s) | Degrassi, Giuseppe (INFN, Rome3) ; Di Vita, Stefano (INFN, Rome3) ; Elias-Miró, Joan (Barcelona, IFAE) ; Espinosa, José R (Barcelona, IFAE ; ICREA, Barcelona) ; Giudice, Gian F (CERN) ; Isidori, Gino (CERN ; LNF, Dafne Light) ; Strumia, Alessandro (INFN, Pisa ; NICPB, Tallinn) |
| Publication | 2012 |
| Imprint | 31 May 2012 |
| Number of pages | 35 |
| Note | Comments: 35 pages, 8 figures. Final published version, misprints fixed, figures updated Comments: 35 pages, 8 figures. Final published version, misprints fixed, figures updated |
| In: | JHEP 08 (2012) 098 |
| DOI | 10.1007/JHEP08(2012)098 |
| Subject category | Particle Physics - Phenomenology |
| Abstract | We present the first complete next-to-next-to-leading order analysis of the Standard Model Higgs potential. We computed the two-loop QCD and Yukawa corrections to the relation between the Higgs quartic coupling (lambda) and the Higgs mass (Mh), reducing the theoretical uncertainty in the determination of the critical value of Mh for vacuum stability to 1 GeV. While lambda at the Planck scale is remarkably close to zero, absolute stability of the Higgs potential is excluded at 98% C.L. for Mh < 126 GeV. Possible consequences of the near vanishing of lambda at the Planck scale, including speculations about the role of the Higgs field during inflation, are discussed. |
| Copyright/License | Preprint: © 2012-2024 CERN (License: CC-BY-3.0) |
Corresponding record in: Inspire
Rekord stworzony 2012-05-31, ostatnia modyfikacja 2017-05-24