Helicity amplitudes for QCD with massive quarks
The novel massive spinor-helicity formalism of Arkani-Hamed, Huang and Huang provides an elegant way to calculate scattering amplitudes in quantum chromodynamics for arbitrary quark spin projections. In this note we compute two families of tree-level QCD amplitudes with one massive quark pair and n...
| Main Author: | |
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| Format: | Journal article |
| Language: | English |
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Springer
2018
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| _version_ | 1797058449710776320 |
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| author | Ochirov, A |
| author_facet | Ochirov, A |
| author_sort | Ochirov, A |
| collection | OXFORD |
| description | The novel massive spinor-helicity formalism of Arkani-Hamed, Huang and Huang provides an elegant way to calculate scattering amplitudes in quantum chromodynamics for arbitrary quark spin projections. In this note we compute two families of tree-level QCD amplitudes with one massive quark pair and n − 2 gluons. The two cases include all gluons with identical helicity and one opposite-helicity gluon being color-adjacent to one of the quarks. Our results naturally incorporate the previously known amplitudes for both quark spins quantized along one of the gluonic momenta. In the all-multiplicity formulae presented here the spin quantization axes can be tuned at will, which includes the case of the definite-helicity quark states. |
| first_indexed | 2024-03-06T19:50:40Z |
| format | Journal article |
| id | oxford-uuid:23dfd0c9-8965-49bf-9b05-e27d0dbfba18 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:50:40Z |
| publishDate | 2018 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:23dfd0c9-8965-49bf-9b05-e27d0dbfba182022-03-26T11:46:38ZHelicity amplitudes for QCD with massive quarksJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:23dfd0c9-8965-49bf-9b05-e27d0dbfba18EnglishSymplectic ElementsSpringer2018Ochirov, AThe novel massive spinor-helicity formalism of Arkani-Hamed, Huang and Huang provides an elegant way to calculate scattering amplitudes in quantum chromodynamics for arbitrary quark spin projections. In this note we compute two families of tree-level QCD amplitudes with one massive quark pair and n − 2 gluons. The two cases include all gluons with identical helicity and one opposite-helicity gluon being color-adjacent to one of the quarks. Our results naturally incorporate the previously known amplitudes for both quark spins quantized along one of the gluonic momenta. In the all-multiplicity formulae presented here the spin quantization axes can be tuned at will, which includes the case of the definite-helicity quark states. |
| spellingShingle | Ochirov, A Helicity amplitudes for QCD with massive quarks |
| title | Helicity amplitudes for QCD with massive quarks |
| title_full | Helicity amplitudes for QCD with massive quarks |
| title_fullStr | Helicity amplitudes for QCD with massive quarks |
| title_full_unstemmed | Helicity amplitudes for QCD with massive quarks |
| title_short | Helicity amplitudes for QCD with massive quarks |
| title_sort | helicity amplitudes for qcd with massive quarks |
| work_keys_str_mv | AT ochirova helicityamplitudesforqcdwithmassivequarks |