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SUMMARY:Priyotosh Bandyopadhyay (IIT\, Hyderabad) "Fate of Triplet Higgs i
 n the context of Dark matter\, Collider and FOPT"
DTSTART:20260715T060000Z
DTEND:20260715T070000Z
DTSTAMP:20260715T064600Z
UID:indico-event-1355@indico.ibs.re.kr
DESCRIPTION:We start with triplet as an extension of the Standard Model wi
 th the motivation from vacuum stability. We draw some perturbative limit a
 s well as point out the possibility of the Landau Pole at one-loop and Fix
 ed point at the two-loop level. The minimal Y=0 triplet with Z_2 odd\, kno
 wn as inert triplet\,  provides the dark matter. However\, considering th
 e Somerfeld enhancement\, 2024 LUX-ZEPLIN bound and the recent Higgs to ga
 mma gamma bound from ATLAS rules out Y=0 inert triplet as a single dark ma
 tter scenario. Considering a Y=0 non-inert triplet breaks custodial symmet
 ry as the tree-level provides H^\\pm-W^\\mp-Z vertex but fails to provide 
 a dark matter. However\, a simple extension to Z_2 real scalar can provide
  that. Considering first order phase transitions (FOPTs) both single step 
 and multi-sept we found out that it demands lower triplet mass ~< 300 GeV 
 and inert triplet cease to produce any FOPT points in the allowed regions 
 of parameter space\, however for normal triplet a low mass point ~< 200 Ge
 V\, we still get some points providing FOPT. We also make comments on the 
 recent observation of SU(2) quartet. \n\nhttps://indico.ibs.re.kr/event/1
 355/
LOCATION:B109 conference room (Theory Bldg\, 1F)
URL:https://indico.ibs.re.kr/event/1355/
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