Phase transition in multi-scalar-singlet extensions of the Standard Model
We propose a generalization of the Standard Model (SM) by adding two real gauge-singlets S1, S2. The field S1 will improve the strength of the electroweak phase transition (EWPT). Imposing a Z2 symmetry on the field S2 makes this field a possible candidate for dark matter. Both singlets interact wit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-09-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315005195 |
| _version_ | 1811310263085826048 |
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| author | A. Tofighi O.N. Ghodsi M. Saeedhoseini |
| author_facet | A. Tofighi O.N. Ghodsi M. Saeedhoseini |
| author_sort | A. Tofighi |
| collection | DOAJ |
| description | We propose a generalization of the Standard Model (SM) by adding two real gauge-singlets S1, S2. The field S1 will improve the strength of the electroweak phase transition (EWPT). Imposing a Z2 symmetry on the field S2 makes this field a possible candidate for dark matter. Both singlets interact with other observable fields through the Higgs boson. They are allowed to interact with each other as well. We find that by introducing two different scalar fields, the model is less vulnerable to experimental constraints.
In this paper, we consider the effects of a heavy scalar (M1>MH) on the electroweak phase transition. And we present configurations that produce a strong first order EWPT. |
| first_indexed | 2024-04-13T09:56:06Z |
| format | Article |
| id | doaj.art-d4f6a978d79b4774add9ab5336cfeb94 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-04-13T09:56:06Z |
| publishDate | 2015-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-d4f6a978d79b4774add9ab5336cfeb942022-12-22T02:51:26ZengElsevierPhysics Letters B0370-26931873-24452015-09-01748C20821110.1016/j.physletb.2015.07.009Phase transition in multi-scalar-singlet extensions of the Standard ModelA. TofighiO.N. GhodsiM. SaeedhoseiniWe propose a generalization of the Standard Model (SM) by adding two real gauge-singlets S1, S2. The field S1 will improve the strength of the electroweak phase transition (EWPT). Imposing a Z2 symmetry on the field S2 makes this field a possible candidate for dark matter. Both singlets interact with other observable fields through the Higgs boson. They are allowed to interact with each other as well. We find that by introducing two different scalar fields, the model is less vulnerable to experimental constraints. In this paper, we consider the effects of a heavy scalar (M1>MH) on the electroweak phase transition. And we present configurations that produce a strong first order EWPT.http://www.sciencedirect.com/science/article/pii/S0370269315005195Phase transitionGauge singlet model |
| spellingShingle | A. Tofighi O.N. Ghodsi M. Saeedhoseini Phase transition in multi-scalar-singlet extensions of the Standard Model Physics Letters B Phase transition Gauge singlet model |
| title | Phase transition in multi-scalar-singlet extensions of the Standard Model |
| title_full | Phase transition in multi-scalar-singlet extensions of the Standard Model |
| title_fullStr | Phase transition in multi-scalar-singlet extensions of the Standard Model |
| title_full_unstemmed | Phase transition in multi-scalar-singlet extensions of the Standard Model |
| title_short | Phase transition in multi-scalar-singlet extensions of the Standard Model |
| title_sort | phase transition in multi scalar singlet extensions of the standard model |
| topic | Phase transition Gauge singlet model |
| url | http://www.sciencedirect.com/science/article/pii/S0370269315005195 |
| work_keys_str_mv | AT atofighi phasetransitioninmultiscalarsingletextensionsofthestandardmodel AT onghodsi phasetransitioninmultiscalarsingletextensionsofthestandardmodel AT msaeedhoseini phasetransitioninmultiscalarsingletextensionsofthestandardmodel |