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SUMMARY:Softening Higgs Naturalness: an Effective Field Theory Analysis
DTSTART;VALUE=DATE-TIME:20140705T074500Z
DTEND;VALUE=DATE-TIME:20140705T080000Z
DTSTAMP;VALUE=DATE-TIME:20261014T174746Z
UID:indico-contribution-1435@indico.ific.uv.es
DESCRIPTION:Speakers: Shaouly Bar-Shalom (Technion\, Haifa\, Israel)\nWe u
 se an effective field theory (EFT) prescription to accommodate naturalness
  in the Standard Model (SM) Higgs sector. We study the 1-loop corrections 
 to the Higgs mass which are generated by the (complete) set of relevant ef
 fective operators of dimension n>4\, assuming that the SM's degrees of fre
 edom and gauge symmetries are valid up to some new physics scale \\Lambda.
   We find that there are only three classes of higher dimensional effectiv
 e operators which can balance the SM's 1-loop corrections to the Higgs mas
 s\, and that these operators can be generated in the underlying heavy theo
 ry through tree-level exchanges of a heavy singlet or triplet scalar\, a h
 eavy isosinglet\, doublet or isotriplet fermion and a heavy isosinglet or 
 isotriplet vector-boson. Using the EFT naturalness as a guide\, we demonst
 rate how naturalness can be restored within simple toy models containing t
 hese heavy degrees of freedom. In particular\, we show that the SM Higgs s
 ector can be kept natural up to an arbitrary large scale if certain relati
 ons hold between the masses and couplings of the heavy and SM fields\; the
  amount of fine-tuning required depends on the amount of fine-tuning one i
 s willing to tolerate in the Higgs mass corrections.\n\nhttps://indico.ifi
 c.uv.es/event/2025/contributions/1435/
LOCATION: Auditorium 1
URL:https://indico.ific.uv.es/event/2025/contributions/1435/
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