Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Gi-Chol Cho"'
Publikováno v:
Nuclear Physics B, Vol 1007, Iss , Pp 116688- (2024)
We examine a complex singlet scalar extension of the Standard Model (CxSM) with an extra singlet fermion. Both the singlet scalar and fermion are dark matter (DM) candidates. It is known that although the scalar potential in the CxSM can realize stro
Externí odkaz:
https://doaj.org/article/b99a61b541f24affbf8622896bcc4989
Autor:
Gi-Chol Cho, Chikako Idegawa
Publikováno v:
Nuclear Physics B, Vol 994, Iss , Pp 116320- (2023)
We investigate a suppression mechanism of dark matter and quark scattering amplitudes in a complex singlet extension of the Standard Model. It has been pointed out that, in a some variant of the model, the scattering amplitudes cancel each other in t
Externí odkaz:
https://doaj.org/article/6cfc3d849d1f4d52a6fe864304148b6b
Publikováno v:
Physics Letters B, Vol 839, Iss , Pp 137757- (2023)
We study the Multi-critical Point Principle (MPP) in a complex singlet scalar extension of the Standard Model (CxSM). The MPP discussed in this study selects model parameters so that two low-energy vacua realized by scalar fields are degenerate. We f
Externí odkaz:
https://doaj.org/article/aa94294c13b9432a88477d0d5ae7a292
Publikováno v:
Physics Letters B, Vol 823, Iss , Pp 136787- (2021)
We study the feasibility of strong first-order electroweak phase transition (EWPT) in a degenerate-scalar scenario of a complex singlet extension of the Standard Model, in which a mass of an additional scalar is nearly degenerate with that of the Hig
Externí odkaz:
https://doaj.org/article/f325d2421d4042878e035a8de3f988e4
Publikováno v:
Physics Letters B, Vol 789, Iss , Pp 399-404 (2019)
Lepton flavor violating (LFV) process e+e−→e+τ− induced by the four-Fermi contact interactions at the International Linear Collider (ILC) is studied. Taking account of the event selection conditions, it is shown that the ILC is sensitive to sm
Externí odkaz:
https://doaj.org/article/ad71fc4ab75b424f9e2359b05211eb2d
Publikováno v:
Physical Review
We examine CP-violating effects on electroweak phase transition (EWPT) in the standard model with a complex singlet scalar focusing particularly on a scenario where additional scalars have masses close to 125 GeV. Such a high mass degeneracy makes co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58c60c538c07f079952fcee7848cd899
https://doi.org/10.1103/physrevd.106.115012
https://doi.org/10.1103/physrevd.106.115012
Publikováno v:
Physical Review
The minimal dark matter (MDM) scenario is a very simple framework of physics beyond the Standard Model (SM) to supplement the SM with a DM candidate. In this paper, we consider an ultraviolet completion of the scenario to an SO(10) grand unified theo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da6d749ce3e802344ab5ac05a478a2e1
http://arxiv.org/abs/2110.03884
http://arxiv.org/abs/2110.03884
Publikováno v:
Physical Review
We study a pseudoscalar dark-matter model arising from a complex singlet extension of the standard model (SM), and show that the dark-matter--nucleon scattering is suppressed when two CP-even scalars are degenerate. In such a degenerate-scalar scenar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87f0ccd98dd02d4beb455e285f8de111
Publikováno v:
Physical Review
We investigate the production of fermionic dark matter $\chi$ via $pp \to p\gamma p \to p j \chi \bar{\chi}X$ mediated by a leptophobic spin-1 particle, where one of the protons remains intact and is tagged by forward proton detectors. We find that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc1d833e67efaff50c858f6e0015bb42
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physics Letters
Physics Letters B, Vol 823, Iss, Pp 136787-(2021)
Physics Letters B, Vol 823, Iss, Pp 136787-(2021)
We study the feasibility of strong first-order electroweak phase transition (EWPT) in a degenerate-scalar scenario of a complex singlet extension of the Standard Model, in which a mass of an additional scalar is nearly degenerate with that of the Hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a7f39ac775b6c754012b2fa0dd8ce19
https://doi.org/10.1016/j.physletb.2021.136787
https://doi.org/10.1016/j.physletb.2021.136787