Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region
Abstract We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to $$\gamma \gamma $$ γ γ , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while neglecting all particle mass...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-4768-y |
| _version_ | 1819151181029572608 |
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| author | Rafael L. Delgado Antonio Dobado Felipe J. Llanes-Estrada |
| author_facet | Rafael L. Delgado Antonio Dobado Felipe J. Llanes-Estrada |
| author_sort | Rafael L. Delgado |
| collection | DOAJ |
| description | Abstract We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to $$\gamma \gamma $$ γ γ , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while neglecting all particle masses. The resulting amplitudes can be useful in the energy regime ( $$500~\mathrm{{GeV}}{-}3~\mathrm{{TeV}}$$ 500 GeV - 3 TeV ). We also deal with their unitarization so that resonances of the EWSBS can simultaneously be described in the $$\gamma \gamma $$ γ γ initial or final states. Our resulting amplitudes satisfy unitarity, perturbatively in $$\alpha $$ α , but for all s values. In this way we improve on the HEFT that fails as interactions become stronger with growing s and we provide a natural framework for the decay of dynamically generated resonances into WW, ZZ and $$\gamma \gamma $$ γ γ pairs. |
| first_indexed | 2024-12-22T14:29:18Z |
| format | Article |
| id | doaj.art-f629cc170a7940b6bad1a6286cc0b651 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-22T14:29:18Z |
| publishDate | 2017-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-f629cc170a7940b6bad1a6286cc0b6512022-12-21T18:22:47ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-03-0177411310.1140/epjc/s10052-017-4768-yCoupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV regionRafael L. Delgado0Antonio Dobado1Felipe J. Llanes-Estrada2Departamento de Física Teórica I, Universidad Complutense de MadridDepartamento de Física Teórica I, Universidad Complutense de MadridDepartamento de Física Teórica I, Universidad Complutense de MadridAbstract We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to $$\gamma \gamma $$ γ γ , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while neglecting all particle masses. The resulting amplitudes can be useful in the energy regime ( $$500~\mathrm{{GeV}}{-}3~\mathrm{{TeV}}$$ 500 GeV - 3 TeV ). We also deal with their unitarization so that resonances of the EWSBS can simultaneously be described in the $$\gamma \gamma $$ γ γ initial or final states. Our resulting amplitudes satisfy unitarity, perturbatively in $$\alpha $$ α , but for all s values. In this way we improve on the HEFT that fails as interactions become stronger with growing s and we provide a natural framework for the decay of dynamically generated resonances into WW, ZZ and $$\gamma \gamma $$ γ γ pairs.http://link.springer.com/article/10.1140/epjc/s10052-017-4768-yPartial WaveChiral ExpansionRiemann SheetMinimal Composite Higgs ModelElastic Amplitude |
| spellingShingle | Rafael L. Delgado Antonio Dobado Felipe J. Llanes-Estrada Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region European Physical Journal C: Particles and Fields Partial Wave Chiral Expansion Riemann Sheet Minimal Composite Higgs Model Elastic Amplitude |
| title | Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region |
| title_full | Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region |
| title_fullStr | Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region |
| title_full_unstemmed | Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region |
| title_short | Coupling WW, ZZ unitarized amplitudes to $$\gamma \gamma $$ γ γ in the TeV region |
| title_sort | coupling ww zz unitarized amplitudes to gamma gamma γ γ in the tev region |
| topic | Partial Wave Chiral Expansion Riemann Sheet Minimal Composite Higgs Model Elastic Amplitude |
| url | http://link.springer.com/article/10.1140/epjc/s10052-017-4768-y |
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