Top mass from asymptotic safety

• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Verfasst von: Held, Aaron [VerfasserIn]
• Titel: Top mass from asymptotic safety
• Verf.angabe: Astrid Eichhorn, Aaron Held
• Jahr: 2018
• Jahr des Originals: 2017
• Umfang: 5 S.
• Fussnoten: Available online 19 December 2017 ; Gesehen am 11.11.2020
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2018
• Band/Heft Quelle: 777(2018), Seite 217-221
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2017.12.040
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1567054765

Abstract

We discover that asymptotically safe quantum gravity could predict the top-quark mass. For a broad range of microscopic gravitational couplings, quantum gravity could provide an ultraviolet completion for the Standard Model by triggering asymptotic freedom in the gauge couplings and bottom Yukawa and asymptotic safety in the top-Yukawa and Higgs-quartic coupling. We find that in a part of this range, a difference of the top and bottom mass of approximately 170GeV is generated and the Higgs mass is determined in terms of the top mass. Assuming no new physics below the Planck scale, we construct explicit Renormalization Group trajectories for Standard Model and gravitational couplings which link the transplanckian regime to the electroweak scale and yield a top pole mass of Mt,pole≈171GeV.