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SUMMARY:Constraints on SU(2)_L-preserving NSI from τ decays
DTSTART;VALUE=DATE-TIME:20251120T084500Z
DTEND;VALUE=DATE-TIME:20251120T090000Z
DTSTAMP;VALUE=DATE-TIME:20260422T105705Z
UID:indico-contribution-28636@indico.ific.uv.es
DESCRIPTION:Speakers: Santiago Paz Castro (Universitat de València)\nNeut
 rino non-standard interactions (NSI) have been studied in a variety of con
 texts and suggested as a possible mechanism for resolving certain unexpect
 ed results in oscillation experiments. NSI may be generated in various way
 s and take a variety of forms. We focus on flavor-changing neutral current
  NSIs involving tau neutrinos. In simple scenarios in which these are gene
 rated by dimension-six effective operators\, it is often the case that fla
 vor-violating interactions of charged leptons are also generated\; the str
 engths of these interactions are then related by SU(2)_L symmetry. We inve
 stigate for this subset of NSI the restrictions which can be obtained by u
 tilizing the stringent experimental limits on charged lepton flavor-violat
 ing tau decays\, finding that the quark contributions to these operators a
 re often constrained to be on the order of 10^-3.\n\nhttps://indico.ific.u
 v.es/event/8035/contributions/28636/
LOCATION:
URL:https://indico.ific.uv.es/event/8035/contributions/28636/
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