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Model independent evaluation of the Wilson coefficient of the Weinberg operator in QCD

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An Erratum to this article was published on 05 September 2018

A preprint version of the article is available at arXiv.

Abstract

We derive a Wilson coefficient of a CP-violating purely gluonic dimension-6 operator called the Weinberg operator \( \left(GG\overset{\sim }{G}\right) \) generated by a scalar and two fermions at the two-loop level. We do not specify the representation of SU(3)c for the scalar and the fermions, and thus our result can be applied to a variety of models beyond the standard model. We estimate the nucleon EDMs induced by the Weinberg operator in some examples and discuss the importance of measuring EDMs. It is found that future measurements of the EDMs can probe physics at higher energy scale beyond the reach of collider experiments.

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Authors and Affiliations

  1. Institute for Advanced Research, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8602, Japan

    Tomohiro Abe

  2. Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8602, Japan

    Tomohiro Abe & Junji Hisano

  3. Department of Physics, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8602, Japan

    Junji Hisano

  4. Kavli IPMU (WPI), UTIAS, University of Tokyo, Kashiwa, Chiba, 277-8584, Japan

    Junji Hisano

  5. Department of Physics, Tohoku University, Sendai, Miyagi, 980-8578, Japan

    Ryo Nagai

Authors
  1. Tomohiro Abe
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  2. Junji Hisano
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  3. Ryo Nagai
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Correspondence to Tomohiro Abe.

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ArXiv ePrint: 1712.09503

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Abe, T., Hisano, J. & Nagai, R. Model independent evaluation of the Wilson coefficient of the Weinberg operator in QCD. J. High Energ. Phys. 2018, 175 (2018). https://doi.org/10.1007/JHEP03(2018)175

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  • DOI: https://doi.org/10.1007/JHEP03(2018)175

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