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SUMMARY:Muonic Force Behind Flavour Anomalies - Peter Stangl - Peter Stang
 l (University of Bern)
DTSTART:20211112T160000Z
DTEND:20211112T170000Z
UID:TALK162079@talks.cam.ac.uk
CONTACT:Maeve Madigan
DESCRIPTION:This year\, two long-standing hints of new physics have been c
 orroborated by precision measurements. The Muon g-2 experiment found agree
 ment with the previous Brookhaven measurement and LHCb has reported eviden
 ce for violation of lepton flavour universality (LFU). Prime candidates fo
 r new-physics explanations of these anomalies are\, in both cases\, scalar
  leptoquarks. In generic models\, however\, these new particles are\nnotor
 ious for leading to excessive lepton flavour violation (LFV) and\nproton d
 ecay. I will present a class of models in which a new U(1) gauge symmetry\
 nturns leptoquarks into "muoquarks" by ensuring that they couple only to\n
 quarks and second-generation leptons. As a result\, the muoquark models\na
 re free of LFV and proton decay.\nIt turns out that in a muoquark model th
 at explains the violation of\nLFU\, the U(1) gauge boson can provide the n
 ecessary contribution to\nexplain the Muon g-2 measurement. For this type 
 of muoquark models\, I\nwill present a classification of the possible U(1)
  gauge groups and show\nhow their parameter space can be probed by precisi
 on measurements.
LOCATION:Virtual Seminar 
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