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SUMMARY:Radiative Symmetry Breaking\, Freeze-In Dark Matter and Gravitatio
 nal Waves in a Scale-Invariant $U(1)_{L_{\\mu}-L_{\\tau}}$ Model
DTSTART;VALUE=DATE-TIME:20260819T204000Z
DTEND;VALUE=DATE-TIME:20260819T210000Z
DTSTAMP;VALUE=DATE-TIME:20260828T214753Z
UID:indico-contribution-1482@indico.uni.edu.pe
DESCRIPTION:Speakers: Martín Dionisio Arteaga Tupia (PUCP / ULIMA)\nWe pr
 esent ongoing work on a classically scale-invariant extension of the Stand
 ard Model based on the anomaly-free gauge symmetry $U(1)_{L_{\\mu}-L_{\\ta
 u}}$. The model contains a complex scalar\, responsible for the radiative 
 breaking of the new gauge symmetry through the Gildener-Weinberg mechanism
 \, a real singlet scalar\, and a vector-like Dirac fermion playing the rol
 e of dark matter. The vacuum expectation value of the complex scalar induc
 es the singlet vacuum through a scalar portal\, leading dynamically to the
  dark-matter mass.\n\nWe discuss the resulting symmetry-breaking pattern\,
  scalar and gauge spectra\, and the main mechanisms for freeze-in producti
 on\, including vector and scalar decays\, scattering processes\, and possi
 ble cascade production. Particular attention is given to the thermalizatio
 n of the mediator states and to the impact of the phase transition and reh
 eating on the final relic abundance. We also outline the connection with f
 irst-order phase-transition gravitational-wave signatures. The present con
 tribution summarizes the theoretical setup and preliminary progress toward
  a complete phenomenological analysis.\n\nhttps://indico.uni.edu.pe/event/
 184/contributions/1482/
LOCATION:UNI\, Lima Perú Auditorio de la Facultad de Ciencias
URL:https://indico.uni.edu.pe/event/184/contributions/1482/
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