Discrete R-symmetry anomalies in heterotic orbifold models

Takeshi Araki, Kang Sin Choi, Tatsuo Kobayashi, Jisuke Kubo, Hiroshi Ohki

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Anomalies of discrete R symmetries appearing in heterotic orbifold models are studied. We find that the mixed anomalies for different gauge groups satisfy the universal Green-Schwarz condition, indicating that these anomalies are canceled by the Green-Schwarz mechanism. An exact relation between the anomaly coefficients of the discrete R symmetries and one-loop beta-function coefficients is obtained. We also find that the discrete R symmetries have a good chance to be unbroken down to the supersymmetry breaking scale. Even below this scale a Z2 subgroup is unbroken, and it may be an origin of the R parity of the minimal supersymmetric standard model. Relations between the R-symmetry anomalies and T-duality anomalies are also investigated.

Original languageEnglish
Article number066006
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number6
StatePublished - 20 Sep 2007


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