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SUMMARY:Addressing the CP-strong problem with two heavy axions
DTSTART;VALUE=DATE-TIME:20261025T064000Z
DTEND;VALUE=DATE-TIME:20261025T070000Z
DTSTAMP;VALUE=DATE-TIME:20261025T002947Z
UID:indico-contribution-2996@indico.itp.ac.cn
DESCRIPTION:Speakers: Vigilante di Risi (ICTP-AP\, University of Chinese A
 cademy of Science)\nWe present a mechanism to solve the CP-strong problem 
 with two heavy axions in a composite Higgs . An $Sp(8)$ technicolour group
  drives electroweak symmetry breaking by producing the Higgs as a pseudo-N
 ambu–Goldstone boson of the associated flavour symmetry breaking. The sa
 me sector generates the Standard Model Yukawa hierarchies through fundamen
 tal partial compositeness. At high energy\, colour and technicolour are un
 ified into $SU(11)\\times Sp'(8)$\, a UV completion engineered so that the
  two physical axion masses receive contributions both from $Sp'(8)$ small 
 instantons and from the $Sp(8)$ confinement scale\, naturally raising them
  well above the QCD axion mass. We analyse the pseudo-Nambu–Goldstone bo
 son spectrum of the technicoloured sector\, the resulting axion mass matri
 x\, and the flavour structure of the Standard Model.\n\nhttps://indico.itp
 .ac.cn/event/427/contributions/2996/
LOCATION:
URL:https://indico.itp.ac.cn/event/427/contributions/2996/
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