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SUMMARY:New methods to probe Standard Model Extensions via Proton Decay an
 d Neutrino Masses
DTSTART;VALUE=DATE-TIME:20251120T081500Z
DTEND;VALUE=DATE-TIME:20251120T083000Z
DTSTAMP;VALUE=DATE-TIME:20260420T232343Z
UID:indico-contribution-28634@indico.ific.uv.es
DESCRIPTION:Speakers: Arnau Bas i Beneito (Institut de Física Corpuscular
  (IFIC\, CSIC))\nBaryon and lepton number are excellent low-energy symmetr
 ies of the Standard Model (SM) that tightly constrain the form of its exte
 nsions. In this paper we investigate the possibility that these accidental
  symmetries are violated in the deep UV\, in such a way that one multiplet
  necessary for their violation lives at an intermediate energy scale M abo
 ve the electroweak scale. We write down the simplest effective operators c
 ontaining each multiplet that may couple linearly to the SM at the renorma
 lisable level and estimate the dominant contribution of the underlying UV 
 model to the pertinent operators in the SMEFT: the dimension-5 Weinberg op
 erator and the baryon-number-violating operators up to dimension 7. Our re
 sults are upper bounds on the scale M for each multiplet–operator pair\,
  derived from neutrino-oscillation data as well as prospective nucleon-dec
 ay searches. We also analyse the possibility that both processes are simul
 taneously explained within a natural UV model. In addition\, we advocate t
 hat our framework provides a convenient and digestible way of organising t
 he space of UV models that violate these symmetries.\n\nhttps://indico.ifi
 c.uv.es/event/8035/contributions/28634/
LOCATION:
URL:https://indico.ific.uv.es/event/8035/contributions/28634/
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