Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta
Abstract We discuss production of W + W − pairs in proton-proton collisions induced by two-photon fusion including, for a first time, transverse momenta of incoming photons. The unintegrated inelastic fluxes (related to proton dissociation) of photons are calculated based on modern parametrizations...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP05(2018)064 |
| _version_ | 1818350036869709824 |
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| author | Marta Łuszczak Wolfgang Schäfer Antoni Szczurek |
| author_facet | Marta Łuszczak Wolfgang Schäfer Antoni Szczurek |
| author_sort | Marta Łuszczak |
| collection | DOAJ |
| description | Abstract We discuss production of W + W − pairs in proton-proton collisions induced by two-photon fusion including, for a first time, transverse momenta of incoming photons. The unintegrated inelastic fluxes (related to proton dissociation) of photons are calculated based on modern parametrizations of deep inelastic structure functions in a broad range of their arguments (x and Q 2). In our approach we can get separate contributions of different W helicities states. Several one- and two-dimensional differential distributions are shown and discussed. The present results are compared to the results of previous calculations within collinear factorization approach. Similar results are found except of some observables such as e.g. transverse momentum of the pair of W + and W −. We find large contributions to the cross section from the region of large photon virtualities. We show decomposition of the total cross section as well as invariant mass distribution into the polarisation states of both W bosons. The role of the longitudinal F L structure function is quantified. Its inclusion leads to a 4–5% decrease of the cross section, almost independent of M WW . |
| first_indexed | 2024-12-13T18:15:28Z |
| format | Article |
| id | doaj.art-211a2447074f466baa5fe87e5f8268f2 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T18:15:28Z |
| publishDate | 2018-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-211a2447074f466baa5fe87e5f8268f22022-12-21T23:35:51ZengSpringerOpenJournal of High Energy Physics1029-84792018-05-012018512110.1007/JHEP05(2018)064Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momentaMarta Łuszczak0Wolfgang Schäfer1Antoni Szczurek2Faculty of Mathematics and Natural Sciences, University of RzeszówInstitute of Nuclear Physics Polish Academy of SciencesInstitute of Nuclear Physics Polish Academy of SciencesAbstract We discuss production of W + W − pairs in proton-proton collisions induced by two-photon fusion including, for a first time, transverse momenta of incoming photons. The unintegrated inelastic fluxes (related to proton dissociation) of photons are calculated based on modern parametrizations of deep inelastic structure functions in a broad range of their arguments (x and Q 2). In our approach we can get separate contributions of different W helicities states. Several one- and two-dimensional differential distributions are shown and discussed. The present results are compared to the results of previous calculations within collinear factorization approach. Similar results are found except of some observables such as e.g. transverse momentum of the pair of W + and W −. We find large contributions to the cross section from the region of large photon virtualities. We show decomposition of the total cross section as well as invariant mass distribution into the polarisation states of both W bosons. The role of the longitudinal F L structure function is quantified. Its inclusion leads to a 4–5% decrease of the cross section, almost independent of M WW .http://link.springer.com/article/10.1007/JHEP05(2018)064Phenomenological ModelsQCD Phenomenology |
| spellingShingle | Marta Łuszczak Wolfgang Schäfer Antoni Szczurek Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta Journal of High Energy Physics Phenomenological Models QCD Phenomenology |
| title | Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta |
| title_full | Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta |
| title_fullStr | Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta |
| title_full_unstemmed | Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta |
| title_short | Production of W + W − pairs via γ * γ * → W + W − subprocess with photon transverse momenta |
| title_sort | production of w w pairs via γ γ w w subprocess with photon transverse momenta |
| topic | Phenomenological Models QCD Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP05(2018)064 |
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