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SUMMARY:Precision studies of neutron decay and the left-right asymmetric m
 odel of weak interaction
DTSTART;VALUE=DATE-TIME:20261029T150000Z
DTEND;VALUE=DATE-TIME:20261029T151500Z
DTSTAMP;VALUE=DATE-TIME:20261026T053312Z
UID:indico-contribution-6242@cern.ch
DESCRIPTION:Speakers: Anatolii Serebrov (NRC "Kurchatov Institute" - PNPI)
 \nAn analysis of the most recent\, most precise experimental data on neutr
 on decay points to the need to extend the Standard Model by introducing an
  admixture of the right-handed vector boson $W_R$. A left-right asymmetric
  weak interaction model is presented\, in which the sign of the mixing ang
 le of $W_R$ and $W_L$ reverses upon the transition from $W^-$ to $W^+$. In
  this model\, CP violation arises due to the presence of an admixture of t
 he right-handed vector boson. The model parameter\, the mixing angle $\\ze
 ta = -(2.7 \\pm 0.9) \\cdot 10^{-3}$\, is derived from neutron decay — t
 he lifetime and decay asymmetries — as well as from studies of proton de
 cay in nuclei\, the so-called superallowed $0^+$-$0^+$ transitions. The $W
 _R$: mass $M_{W_R} = (340 \\pm 60)$ GeV estimate is given by the relation 
 from the parameter $\\delta = -(5.5\\pm1.8) \\cdot 10^{-2}$\, which is the
  ratio of the squares of the mass states of vector bosons. It is shown tha
 t within the framework of this model\, the effects of CP violation in the 
 decays of  $K^0$-mesons\, $D^0$-mesons\, $B^0$-mesons\, and $B^0_S$-mesons
  can be successfully described.\n\nhttps://indico.particle.mephi.ru/event/
 626/contributions/6242/
LOCATION: Conference Hall 1
URL:https://indico.particle.mephi.ru/event/626/contributions/6242/
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