The anomalous U(1)anom symmetry and flavors from an SU(5) x SU(5)′ GUT in Z 12−I orbifold compactification

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Title
The anomalous U(1)anom symmetry and flavors from an SU(5) x SU(5)′ GUT in Z 12−I orbifold compactification
Author(s)
Jihn E. Kim; Bumseok Kyae; Soonkeon Nam
Publication Date
2017-12
Journal
EUROPEAN PHYSICAL JOURNAL C, v.77, no.12, pp.847 -
Publisher
SPRINGER
Abstract
In string compactifications, frequently the anomalous U(1) gauge symmetry appears which belongs to E 8 ×E ′ 8 E8×E8′ of the heterotic string. This anomalous U(1) gauge boson obtains mass at the compactification scale (≈10 18 GeV ≈1018GeV) by absorbing one pseudoscalar (corresponding to the model-independent axion) from the second rank antisymmetric tensor field B MN BMN . Below the compactification scale a global symmetry U(1) anom U(1)anom results whose charge Q anom Qanom is the original gauge U(1) charge. This is the most natural global symmetry, realizing the “invisible” axion. This global symmetry U(1) anom U(1)anom is suitable for a flavor symmetry. In the simplest compactification model with the flipped SU(5) grand unification, all the low energy parameters are calculated in terms of the vacuum expectation values of the standard model singlets. © The Author(s) 2017. This article is an open access publication
URI
https://pr.ibs.re.kr/handle/8788114/4062
ISSN
1434-6044
Appears in Collections:
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > Journal Papers (저널논문)
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