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SUMMARY:Exploring chirality structure in nucleon decay
DTSTART:20250828T070000Z
DTEND:20250828T090000Z
DTSTAMP:20260415T012500Z
UID:indico-event-971@indico.ibs.re.kr
DESCRIPTION:Speakers: Hiroki Takahashi (Tokyo U)\n\nThe search for baryon 
 number violation offers a promising path to uncovering new physics. In thi
 s talk\, we examine how measurements of different nucleon decay channels c
 an shed light on the underlying theory. We first investigate the chirality
  structure of baryon-number-violating interactions through lifetime measur
 ements of strangeness-conserving nucleon decay modes. Using an effective f
 ield theory framework\, we show that the ratio of partial decay widths—s
 pecifically\, Γ(p→ηℓ+)/Γ(p→π0ℓ+)\, where ℓ+ denotes a positr
 on or anti-muon—is sensitive to this chirality structure. Moreover\, we 
 find that in certain new physics scenarios\, decay channels involving both
  anti-leptons and anti-neutrinos can provide complementary insights into t
 heir structures. These results underscore the importance of searching for 
 various decay modes in future nucleon decay experiments. If time permits\,
  we also discuss how the ratios of branching fractions can be useful to de
 termine an unknown unitary matrix in the flipped SU(5) grand unification.\
 n\nhttps://indico.ibs.re.kr/event/971/
LOCATION:447B-1 (IBS CTPU-CGA)
URL:https://indico.ibs.re.kr/event/971/
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