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Title: ν solution to the strong C P problem

Abstract

We present a new solution to the strong CP problem in which the imaginary component of the up quark mass, $$\mathcal{I}[m_u]$$, acquires a tiny, but non-vanishing value. This is achieved via a Dirac seesaw mechanism, which is also responsible for the generation of the small neutrino masses. Consistency with the observed value of the up quark mass is achieved via instanton contributions arising from QCD-like interactions. In this framework, the value of the neutron electric dipole moment is directly related to $$\mathcal{I}[m_u]$$, which, due to its common origin with the neutrino masses, implies that the neutron electric dipole moment is likely to be measured in the next round of experiments. We also present a supersymmetric extension of this Dirac seesaw model to stabilize the hierarchy among the scalar mass scales involved in this new mechanism.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [2]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States). Enrico Fermi Inst.
  2. Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  3. Univ. of Chicago, IL (United States). Enrico Fermi Inst. and Kavli Inst. for Cosmological Physics
  4. Wayne State Univ., Detroit, MI (United States). Dept. of Physics & Astronomy
  5. Univ. of Chicago, IL (United States). Enrico Fermi Inst.; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1545102
Report Number(s):
arXiv:1904.05360; FERMILAB-PUB-19-144-T; EFI-19-4; WSU-HEP-1902
Journal ID: ISSN 2470-0010; PRVDAQ; oai:inspirehep.net:1729235
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Carena, Marcela, Liu, Da, Liu, Jia, Shah, Nausheen R., Wagner, Carlos E.M., and Wang, Xiao-Ping. ν solution to the strong CP problem. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.094018.
Carena, Marcela, Liu, Da, Liu, Jia, Shah, Nausheen R., Wagner, Carlos E.M., & Wang, Xiao-Ping. ν solution to the strong CP problem. United States. doi:10.1103/PhysRevD.100.094018.
Carena, Marcela, Liu, Da, Liu, Jia, Shah, Nausheen R., Wagner, Carlos E.M., and Wang, Xiao-Ping. Fri . "ν solution to the strong CP problem". United States. doi:10.1103/PhysRevD.100.094018. https://www.osti.gov/servlets/purl/1545102.
@article{osti_1545102,
title = {ν solution to the strong CP problem},
author = {Carena, Marcela and Liu, Da and Liu, Jia and Shah, Nausheen R. and Wagner, Carlos E.M. and Wang, Xiao-Ping},
abstractNote = {We present a new solution to the strong CP problem in which the imaginary component of the up quark mass, $\mathcal{I}[m_u]$, acquires a tiny, but non-vanishing value. This is achieved via a Dirac seesaw mechanism, which is also responsible for the generation of the small neutrino masses. Consistency with the observed value of the up quark mass is achieved via instanton contributions arising from QCD-like interactions. In this framework, the value of the neutron electric dipole moment is directly related to $\mathcal{I}[m_u]$, which, due to its common origin with the neutrino masses, implies that the neutron electric dipole moment is likely to be measured in the next round of experiments. We also present a supersymmetric extension of this Dirac seesaw model to stabilize the hierarchy among the scalar mass scales involved in this new mechanism.},
doi = {10.1103/PhysRevD.100.094018},
journal = {Physical Review D},
number = 9,
volume = 100,
place = {United States},
year = {2019},
month = {11}
}

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