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The KM phase in semi-realistic heterotic orbifold models

Journal Article · · Nuclear Physics B
OSTI ID:860287

In string-inspired semi-realistic heterotic orbifolds models with an anomalous U(1){sub X},a nonzero Kobayashi-Masakawa (KM) phase is shown to arise generically from the expectation values of complex scalar fields, which appear in nonrenormalizable quark mass couplings. Modular covariant nonrenormalizable superpotential couplings are constructed. A toy Z{sub 3} orbifold model is analyzed in some detail. Modular symmetries and orbifold selection rules are taken into account and do not lead to a cancellation of the KM phase. We also discuss attempts to obtain the KM phase solely from renormalizable interactions.

Research Organization:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Organization:
USDOE Director, Office of Science. Office of High Energy andNuclear Physics. Division of High Energy Physics; National ScienceFoundation
DOE Contract Number:
AC02-05CH11231
OSTI ID:
860287
Report Number(s):
LBNL--46292
Journal Information:
Nuclear Physics B, Journal Name: Nuclear Physics B Journal Issue: 1-2 Vol. 595
Country of Publication:
United States
Language:
English

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