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A simple solution to the strongCP-problem

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Zeitschrift für Physik C Particles and Fields

Abstract

We suggest soft breaking of Peccei-Quinn symmetry as a simple solution to the strongCP problem without the presence of the axion. In the context of theSU(2) L ×U(1) model, it is shown how settingθ tree=0 keeps θ calculable and, furthermore, extremely small: θ≲10−16. Unlike in the case of the axion the model is free from the cosmological domain wall problem. Possible extension of this idea to grand unification is discussed.

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Author notes

  1. Rabindra N. Mohapatra

    Present address: Dept. of Physics and Astronomy, University of Maryland, 20742, College Park, MD, USA

Authors and Affiliations

  1. Department of Physics, City College of New York, 10031, NY, USA

    Rabindra N. Mohapatra

  2. Department of Physics, Brookhaven National Laboratory, 11973, Upton, NY, USA

    Goran Senjanović

Authors
  1. Rabindra N. Mohapatra
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  2. Goran Senjanović
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Mohapatra, R.N., Senjanović, G. A simple solution to the strongCP-problem. Z. Phys. C - Particles and Fields 20, 365–367 (1983). https://doi.org/10.1007/BF01407830

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  • DOI: https://doi.org/10.1007/BF01407830

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