W-boson pair production at lepton colliders in the Feynman-diagram gauge
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866917772625182720 |
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| author | Furusato, Hiroyuki Mawatari, Kentarou Suzuki, Yutaro Zheng, Ya-Juan |
| author_facet | Furusato, Hiroyuki Mawatari, Kentarou Suzuki, Yutaro Zheng, Ya-Juan |
| contents | We calculate helicity amplitudes for $e^-e^+\to W^-W^+$ analytically in the Feynman-diagram (FD) gauge. We show that, unlike in the unitary gauge, there is no energy growth of the individual Feynman amplitudes for the longitudinally polarized W bosons, and the contributions from the associated Goldstone bosons are manifest even without taking the high-energy limit. We also find that the physical distributions can be interpreted by the individual amplitudes in the FD gauge. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_08869 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | W-boson pair production at lepton colliders in the Feynman-diagram gauge Furusato, Hiroyuki Mawatari, Kentarou Suzuki, Yutaro Zheng, Ya-Juan High Energy Physics - Phenomenology We calculate helicity amplitudes for $e^-e^+\to W^-W^+$ analytically in the Feynman-diagram (FD) gauge. We show that, unlike in the unitary gauge, there is no energy growth of the individual Feynman amplitudes for the longitudinally polarized W bosons, and the contributions from the associated Goldstone bosons are manifest even without taking the high-energy limit. We also find that the physical distributions can be interpreted by the individual amplitudes in the FD gauge. |
| title | W-boson pair production at lepton colliders in the Feynman-diagram gauge |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.08869 |