New Stringy Instanton Effects And Neutrino Majorana Masses
Journal Article
·
· AIP Conference Proceedings
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104-6396 (United States)
D-brane instantons can generate open string couplings in the superpotential which violate global abelian symmetries and are therefore perturbatively forbidden. After discussing the main ingredients, focussing for concretenes on Type IIA orientifold compactifications, we exemplify the computation of instanton-induced Majorana mass terms for right-handed neutrinos in a local SU(5) GUT-like model. In particular, we show that the instanton allows for naturally engineering the intermediate scale of the Majorana masses, thereby realizing the seesaw mechanism for neutrinos.
- OSTI ID:
- 21035957
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 939; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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