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Il Nuovo Cimento A (1965-1970)

, Volume 100, Issue 2, pp 167–181 | Cite as

A cosmologically acceptable hadronic axion in a superstring-inspired model

  • F. Gabbiani
Article
  • 19 Downloads

Summary

A cosmologically acceptable harmless hadronic axion is generated in a superstring-inspired model with an intermediate mass scale, through the heavy-quark mechanism. The heavy quarks required to implement this scheme are naturally identified with the exoticD fields contained in the fundamental representations of the gauge groupE6. The axion couplings with ordinary matter are discussed.

PACS 11.30.Pb

Supersymmetry 

Космологически приемлемый адронный аксион в сунерструнной модели

Резюме

В суперструнной модели с промежуточной массовой шкалой образуется космологически приемлемый адронный аксион с помощью механизма «тяжелого кварка». Тяжелые кварки, требуемые для реалиэации этой схемы, отождествляются естественным обраэом с экэотическимиD полями, содержащимися в фундаментальных представлениях калибровочной группыE6. Обсуждаются свяэи аксиона с обыкновенным веществом.

Riassunto

Un assione adronico innocuo e cosmologicamente accettabile è generato in un modello ispirato alle superstringhe con una scala di massa intermedia, attraverso il meccanismo del «quark pesante». I quark pesanti richiesti per realizzare questo schema sono identificati in modo naturale con i campi esoticiD contenuti nelle rappresentazioni fondamentali del gruppo di gaugeE6. Si discutono gli accoppiamenti dell'assione con la materia ordinaria.

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Copyright information

© Società Italiana di Fisica 1988

Authors and Affiliations

  • F. Gabbiani
    • 1
  1. 1.Istituto Nazionale Fisica NucleareSezione di PadovaItalia

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