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SUMMARY:The Nambu Sum Rule in the Composite Two Higgs Doublet Model
DTSTART;VALUE=DATE-TIME:20201006T140500Z
DTEND;VALUE=DATE-TIME:20201006T142000Z
DTSTAMP;VALUE=DATE-TIME:20261015T231736Z
UID:indico-contribution-2161@cern.ch
DESCRIPTION:Speakers: Mahmoud Khalifa (Moscow Institute of Physics and Tec
 hnology\, Dolgoprudnyi\, Moscow oblast\, 141701 Russia\, Department of Phy
 sics\, Al-Azhar University\, Cairo\, 11751 Egypt)\nThe spectrum of spinles
 s modes in a model with the 〖SU(2)〗_L×〖SU(2)〗_R  symmetrical four
 -quark interaction proposed by Miransky\, Tanabashi\, and Yamawaki is stud
 ied. For the sake of simplicity\, only four-fermion interactions of top an
 d bottom quarks are considered. The spinless modes result from spontaneous
  electroweak interaction symmetry breaking and are coupled quark–antiqua
 rk states associated with SU(2) two Higgs doublets. Their dynamics is desc
 ribed by the effective Lagrangian obtained by the Schwinger– DeWitt meth
 od. The spectrum is represented by excitations of five types\, the mass of
  each being expressed by the parameters of the model. It is shown that the
  model yields phenomenologically acceptable values of both the mass of qua
 rks m_t=173 GeV and m_b=4.18 GeV and the mass of the standard Higgs state 
 m_(χ_1 )=125 GeV. The masses of the particles that comprise the second Hi
 ggs doublet m_(h^∓ )=275 GeV\, m_(χ_1 )=325 GeV and m_(ϕ_0 )=125 GeV\,
  have been calculated. The Nambu sum rule and the conditions for satisfyin
 g it in the theories with the broken 〖U(1)〗_A symmetry are discussed.\
 n\nhttps://indico.particle.mephi.ru/event/35/contributions/2161/
LOCATION:Zoom HEP Theory
URL:https://indico.particle.mephi.ru/event/35/contributions/2161/
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