### Abstract

We show that there is a constraint on the parameter space of two Higgs doublet models that comes from the existence of the stable vortex-domain wall systems. The constraint is quite universal in the sense that it depends on only two combinations of Lagrangian parameters and, at tree level, does not depend on how fermions couple to two Higgs fields. Numerical solutions of field configurations of domain wall-vortex system are obtained, which provide a basis for further quantitative study of cosmology which involve such topological objects.

Original language | English |
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Pages (from-to) | 447-453 |

Number of pages | 7 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 785 |

DOIs | |

Publication status | Published - 2018 Oct 10 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

**Constraints on two Higgs doublet models from domain walls.** / Eto, Minoru; Kurachi, Masafumi; Nitta, Muneto.

Research output: Contribution to journal › Article

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*, vol. 785, pp. 447-453. https://doi.org/10.1016/j.physletb.2018.09.002

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TY - JOUR

T1 - Constraints on two Higgs doublet models from domain walls

AU - Eto, Minoru

AU - Kurachi, Masafumi

AU - Nitta, Muneto

PY - 2018/10/10

Y1 - 2018/10/10

N2 - We show that there is a constraint on the parameter space of two Higgs doublet models that comes from the existence of the stable vortex-domain wall systems. The constraint is quite universal in the sense that it depends on only two combinations of Lagrangian parameters and, at tree level, does not depend on how fermions couple to two Higgs fields. Numerical solutions of field configurations of domain wall-vortex system are obtained, which provide a basis for further quantitative study of cosmology which involve such topological objects.

AB - We show that there is a constraint on the parameter space of two Higgs doublet models that comes from the existence of the stable vortex-domain wall systems. The constraint is quite universal in the sense that it depends on only two combinations of Lagrangian parameters and, at tree level, does not depend on how fermions couple to two Higgs fields. Numerical solutions of field configurations of domain wall-vortex system are obtained, which provide a basis for further quantitative study of cosmology which involve such topological objects.

UR - http://www.scopus.com/inward/record.url?scp=85053183626&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053183626&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.09.002

DO - 10.1016/j.physletb.2018.09.002

M3 - Article

AN - SCOPUS:85053183626

VL - 785

SP - 447

EP - 453

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -