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  Solving the Strong CP Problem with Discrete Symmetries and the Right Unitarity Triangle

Antusch, S., Holthausen, M., Schmidt, M. A., & Spinrath, M. (2013). Solving the Strong CP Problem with Discrete Symmetries and the Right Unitarity Triangle. Nuclear Physics B, 877(3), 752-771. doi:10.1016/j.nuclphysb.2013.10.028.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-B55B-0 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-B55C-E
Genre: Journal Article

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 Creators:
Antusch, Stefan1, 2, Author
Holthausen, Martin3, Author           
Schmidt, Michael A.4, Author
Spinrath, Martin5, Author
Affiliations:
1Department of Physics, University of Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland, ou_persistent22              
2Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, D-80805 München, Germany, ou_persistent22              
3Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              
4ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of Melbourne, Melbourne, Victoria 3010, Australia, ou_persistent22              
5 SISSA/ISAS and INFN, Via Bonomea 265, I-34136 Trieste, Italy, ou_persistent22              

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Free keywords: High Energy Physics - Phenomenology, hep-ph
 Abstract: We present a solution to the strong CP problem based on spontaneous CP violation and discrete family symmetries. The model predicts in a natural way the almost right-angled quark unitarity triangle angle ($\alpha \simeq 90^\circ$) by making the entries of the quark mass matrices either real or imaginary. By this choice the determinants of the mass matrices are rendered real and hence the strong CP phase vanishes. We present a toy model for the quark sector that demonstrates the viability of our approach.

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 Dates: 2013-12-21
 Publication Status: Published online
 Pages: 20 pages, 4 figures
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 1307.0710
DOI: 10.1016/j.nuclphysb.2013.10.028
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Title: Nuclear Physics B
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 877 (3) Sequence Number: - Start / End Page: 752 - 771 Identifier: ISSN: 0550-3213
CoNE: https://pure.mpg.de/cone/journals/resource/954925564667