Gravitational waves from domain wall collapses and dark matter in the SM with a complex scalar field

被引：0

作者：

Pham, Hieu The ^{[1
,2
]}

Senaha, Eibun ^{[3
,4
]}

机构：

[1] Univ Sci, Dept Theoret Phys, Ho Chi Minh City, Vietnam

[2] Vietnam Natl Univ, Ho Chi Minh City, Vietnam

[3] Van Lang Univ, Sci & Technol Adv Inst, Subatom Phys Res Grp, Ho Chi Minh City, Vietnam

[4] Van Lang Univ, Fac Appl Technol, Sch Technol, Ho Chi Minh City, Vietnam

来源：

PHYSICAL REVIEW D | 2024年 / 109卷 / 09期

关键词：

BARYON-NUMBER NONCONSERVATION; CP VIOLATION; ELECTROWEAK;

D O I：

10.1103/PhysRevD.109.095048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study a domain wall induced by spontaneously broken 1 2 symmetry and its gravitational wave signature in the standard model with a complex scalar in connection with dark matter physics. In a minimal setup, a linear term of the singlet field is added to the scalar potential as an explicit 1 2 breaking term to make the domain wall unstable. We obtain its minimal size from cosmological constraints and show that the parameter space that can be probed by current and future pulsar time array experiments requires the vacuum expectation value of the singlet field to be greater than O ( 10 -100 ) TeV, along with a singletlike Higgs mass of O ( 1 -100 ) TeV. However, such a region is severely restricted by the dark matter relic density, which places an upper bound on the singlet vacuum expectation value at approximately 200 TeV, and limits the dark matter mass to about half of the singletlike Higgs boson mass.

引用

页数：12

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