On the anomalous U(1) in free fermionic superstring models

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The realistic free fermionic models have had an intriguing success in explaining different properties of the observed particle spectrum. In this paper the authors discuss in some detail the anomalous U(1) symmetry which exists in these models. They study the properties of the anomalous U(1) in both the more realistic NAHE-based free fermionic models and those in a general NAHE class. Appearance of an anomalous U(1) in the more realistic NAHE models is shown to be an effect of reduction of world-sheet supersymmetry from (2,2) to (2,0). They show, however, that in more general (2,1) and (2,0) models, all U(1) ... continued below

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23 p.

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Cleaver, G.B. & Faraggi, A.E. November 1, 1997.

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  • Cleaver, G.B. Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Physics and Astronomy
  • Faraggi, A.E. Florida Univ., Gainesville, FL (United States). Inst. for Fundamental Theory

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Description

The realistic free fermionic models have had an intriguing success in explaining different properties of the observed particle spectrum. In this paper the authors discuss in some detail the anomalous U(1) symmetry which exists in these models. They study the properties of the anomalous U(1) in both the more realistic NAHE-based free fermionic models and those in a general NAHE class. Appearance of an anomalous U(1) in the more realistic NAHE models is shown to be an effect of reduction of world-sheet supersymmetry from (2,2) to (2,0). They show, however, that in more general (2,1) and (2,0) models, all U(1) can remain anomaly-free under certain conditions. Several phenomenological issues related to the anomalous U(1) are discussed. In particular, they note that in some examples the anomalous U(1) arises from the breaking E{sub 6} {yields} SO(10) {times} U(1){sub A}, resulting in U(1){sub A} being family universal.

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23 p.

Notes

INIS; OSTI as DE98001990

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  • Other Information: PBD: Nov 1997

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  • Other: DE98001990
  • Report No.: DOE/ER/40272--288
  • Report No.: UFIFT-HEP--97-28;UPR--0773-T;HEP-TH--9711339
  • Grant Number: FG05-86ER40272
  • DOI: 10.2172/564309 | External Link
  • Office of Scientific & Technical Information Report Number: 564309
  • Archival Resource Key: ark:/67531/metadc699280

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  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 5, 2015, 1:50 p.m.

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Cleaver, G.B. & Faraggi, A.E. On the anomalous U(1) in free fermionic superstring models, report, November 1, 1997; United States. (https://digital.library.unt.edu/ark:/67531/metadc699280/: accessed April 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.