Relativistic freeze-in with scalar dark matter in a gauged B - L model and electroweak symmetry breaking

被引：8

作者：

Bandyopadhyay, Priyotosh ^{[1
]}

Mitra, Manimala ^{[2
,3
]}

Roy, Abhishek ^{[2
,3
]}

机构：

[1] Indian Inst Technol Hyderabad, Sangareddy 50228, Telengana, India

[2] Inst Phys, Sachivalaya Marg, Bhubaneswar 751005, Odisha, India

[3] Homi Bhabha Natl Inst, BARC Training Sch Complex, Mumbai 400094, Maharashtra, India

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 2021卷 / 05期

关键词：

Beyond Standard Model; Cosmology of Theories beyond the SM; Neutrino Physics; NEUTRINO; TEMPERATURE;

D O I：

10.1007/JHEP05(2021)150

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We explore relativistic freeze-in production of scalar dark matter in gauged B - L model, where we focus on the production of dark matter from the decay and annihilation of Standard Model (SM) and B - L Higgs bosons. We consider the Bose-Einstein (BE) and Fermi-Dirac (FD) statistics, along with the thermal mass correction of the SM Higgs boson in our analysis. We show that in addition to the SM Higgs boson, the annihilation and decay of the B - L scalar can also contribute substantially to the dark matter relic density. Potential effects of electroweak symmetry breaking (EWSB) and thermal mass correction in BE framework enhance the dark matter relic substantially as it freezes-in near EWSB temperature via scalar annihilation. However, such effects are not so prominent when the dark matter freezes-in at a later epoch than EWSB, dominantly by decay of scalars. The results of this analysis are rather generic, and applicable to other similar scenarios.

引用

页数：33