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SUMMARY:Solving the Strong CP Problem with Heavy Axions
DTSTART;VALUE=DATE-TIME:20261025T062000Z
DTEND;VALUE=DATE-TIME:20261025T064000Z
DTSTAMP;VALUE=DATE-TIME:20261024T233825Z
UID:indico-contribution-2997@indico.itp.ac.cn
DESCRIPTION:Speakers: Xu-Hui Jiang (ICTP-AP)\nWe propose a general framewo
 rk that extends the Standard Model (SM) to the gauge group $SU(2k+3)\\time
 s Sp(2k)'\\times U(1)_Y'\\times Z_4$. The SM quarks are embedded in the fu
 ndamental multiplet of $SU(2k+3)$\, $Sp(2k)'$ provides an extra technicolo
 r (TC) sector\, $U(1)_Y'$ helps reproduce the correct SM hypercharges\, an
 d\, the discrete $Z_4$ forbids unwanted TC fermion mass terms. The strong 
 CP problem is solved by two axions associated with the two non-Abelian gro
 ups. Both axions can be made heavy by the combined effects of small instan
 tons and TC confinement. We scan the viable parameter space for different 
 values of $k$ and present the resulting axion spectrum. The predicted mass
 es lie well above the conventional QCD-axion window and open a richer set 
 of phenomenological signatures for experimental searches.\n\nhttps://indic
 o.itp.ac.cn/event/427/contributions/2997/
LOCATION:
URL:https://indico.itp.ac.cn/event/427/contributions/2997/
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