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SUMMARY:PJC: Giovanna Paola Perdonà "Topological gauge dynamics of Standa
 rd Model $\\theta$ vacua"
DTSTART:20260430T110000Z
DTEND:20260430T123000Z
DTSTAMP:20260429T204300Z
UID:indico-event-52103@agenda.infn.it
DESCRIPTION:It is well known that the topological angle of the electroweak
  sector of the Standard Model (SM) is unphysical\, as it can be removed by
  an anomalous B+L chiral rotation. Recent claims ( https://arxiv.org/abs/2
 408.07535 ) suggest that a parametrically light pseudo-scalar degree of fr
 eedom -- dubbed the $\\eta'_{W}$ -- exists in the spectrum\, associated wi
 th the anomalous breaking of B+L symmetry. To determine whether such a lig
 ht degree of freedom exists within the SM\, we perform explicit calculatio
 ns of the topological susceptibility and of the B+L breaking "condensate"\
 , along with a detailed analysis and comparison with the Schwinger model a
 nd QCD in the large-$N_c$ limit.\n\nhttps://agenda.infn.it/event/52103/
LOCATION:Sala Direzione INFN
URL:https://agenda.infn.it/event/52103/
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