Models with higher weak-isospin Higgs multiplets
In order for scale factors κV(V=W,Z) of the 125-GeV Higgs boson couplings to have the possibilities of being greater than unity and κW≠κZ while keeping the electroweak ρ parameter unity at tree level, the Higgs sector must be extended with at least two exotic SU(2)L multiplets in addition to the dou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318307512 |
| _version_ | 1818252860007120896 |
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| author | Cheng-Wei Chiang Kei Yagyu |
| author_facet | Cheng-Wei Chiang Kei Yagyu |
| author_sort | Cheng-Wei Chiang |
| collection | DOAJ |
| description | In order for scale factors κV(V=W,Z) of the 125-GeV Higgs boson couplings to have the possibilities of being greater than unity and κW≠κZ while keeping the electroweak ρ parameter unity at tree level, the Higgs sector must be extended with at least two exotic SU(2)L multiplets in addition to the doublet Higgs field in the Standard Model. By the requirements of perturbative unitarity, no Landau pole in gauge couplings, and no accidental global U(1) symmetry, we exhaust all the possible combinations of two exotic Higgs fields and derive general formulas for κV. We find that the current central values κW=1.12 and κZ=0.99 reported by CMS can be accommodated in the model with a complex and a real Higgs triplets as the simplest example. |
| first_indexed | 2024-12-12T16:30:53Z |
| format | Article |
| id | doaj.art-c564bee65927435c97a5c69e980a52c9 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-12T16:30:53Z |
| publishDate | 2018-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-c564bee65927435c97a5c69e980a52c92022-12-22T00:18:46ZengElsevierPhysics Letters B0370-26932018-11-01786268271Models with higher weak-isospin Higgs multipletsCheng-Wei Chiang0Kei Yagyu1Department of Physics, National Taiwan University, Taipei, 10617, Taiwan, ROC; Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan, ROC; Kavli IPMU, University of Tokyo, Kashiwa, 277-8583, JapanSeikei University, Musashino, Tokyo 180-8633, Japan; Corresponding author at: Seikei University, Musashino, Tokyo 180-8633, Japan.In order for scale factors κV(V=W,Z) of the 125-GeV Higgs boson couplings to have the possibilities of being greater than unity and κW≠κZ while keeping the electroweak ρ parameter unity at tree level, the Higgs sector must be extended with at least two exotic SU(2)L multiplets in addition to the doublet Higgs field in the Standard Model. By the requirements of perturbative unitarity, no Landau pole in gauge couplings, and no accidental global U(1) symmetry, we exhaust all the possible combinations of two exotic Higgs fields and derive general formulas for κV. We find that the current central values κW=1.12 and κZ=0.99 reported by CMS can be accommodated in the model with a complex and a real Higgs triplets as the simplest example.http://www.sciencedirect.com/science/article/pii/S0370269318307512 |
| spellingShingle | Cheng-Wei Chiang Kei Yagyu Models with higher weak-isospin Higgs multiplets Physics Letters B |
| title | Models with higher weak-isospin Higgs multiplets |
| title_full | Models with higher weak-isospin Higgs multiplets |
| title_fullStr | Models with higher weak-isospin Higgs multiplets |
| title_full_unstemmed | Models with higher weak-isospin Higgs multiplets |
| title_short | Models with higher weak-isospin Higgs multiplets |
| title_sort | models with higher weak isospin higgs multiplets |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318307512 |
| work_keys_str_mv | AT chengweichiang modelswithhigherweakisospinhiggsmultiplets AT keiyagyu modelswithhigherweakisospinhiggsmultiplets |