Phenomenology of combined resummation for Higgs and Drell-Yan
Abstract We study the phenomenological impact of a recently suggested formalism for the combination of threshold and a so-called threshold-improved transverse momentum resummation, by using it to improve the fixed-order results. This formalism allows for a systematic improvement of the transverse mo...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2020)073 |
| _version_ | 1818721232696115200 |
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| author | Tanjona R. Rabemananjara |
| author_facet | Tanjona R. Rabemananjara |
| author_sort | Tanjona R. Rabemananjara |
| collection | DOAJ |
| description | Abstract We study the phenomenological impact of a recently suggested formalism for the combination of threshold and a so-called threshold-improved transverse momentum resummation, by using it to improve the fixed-order results. This formalism allows for a systematic improvement of the transverse momentum resummation that is valid in the entire range of p T by the inclusion of the threshold contribution. We use the Borel method as a suitable prescription for defining the inverse Mellin and Fourier transforms in the context of combined resummed expression. The study is applied to two QCD processes, namely the Higgs boson produced via gluon fusion and Z boson production via the Drell-Yan mechanism. We compare our results to the standard transverse momentum resummation, as well as to the fixed-order results. We find that the threshold-improved transverse momentum resummation leads to faster perturbative convergence at small p T while the inclusion of threshold resummation improves the agreement with fixed-order calculations at medium and large p T . These effects are more pronounced in the case of Higgs which is known to have slower perturbative convergence. |
| first_indexed | 2024-12-17T20:35:28Z |
| format | Article |
| id | doaj.art-167be38d189e45179ec3b9814e9612a1 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-17T20:35:28Z |
| publishDate | 2020-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-167be38d189e45179ec3b9814e9612a12022-12-21T21:33:28ZengSpringerOpenJournal of High Energy Physics1029-84792020-12-0120201212410.1007/JHEP12(2020)073Phenomenology of combined resummation for Higgs and Drell-YanTanjona R. Rabemananjara0Tif Lab, Dipartimento di Fisica, Università di Milano, and INFN, Sezione di MilanoAbstract We study the phenomenological impact of a recently suggested formalism for the combination of threshold and a so-called threshold-improved transverse momentum resummation, by using it to improve the fixed-order results. This formalism allows for a systematic improvement of the transverse momentum resummation that is valid in the entire range of p T by the inclusion of the threshold contribution. We use the Borel method as a suitable prescription for defining the inverse Mellin and Fourier transforms in the context of combined resummed expression. The study is applied to two QCD processes, namely the Higgs boson produced via gluon fusion and Z boson production via the Drell-Yan mechanism. We compare our results to the standard transverse momentum resummation, as well as to the fixed-order results. We find that the threshold-improved transverse momentum resummation leads to faster perturbative convergence at small p T while the inclusion of threshold resummation improves the agreement with fixed-order calculations at medium and large p T . These effects are more pronounced in the case of Higgs which is known to have slower perturbative convergence.https://doi.org/10.1007/JHEP12(2020)073QCD Phenomenology |
| spellingShingle | Tanjona R. Rabemananjara Phenomenology of combined resummation for Higgs and Drell-Yan Journal of High Energy Physics QCD Phenomenology |
| title | Phenomenology of combined resummation for Higgs and Drell-Yan |
| title_full | Phenomenology of combined resummation for Higgs and Drell-Yan |
| title_fullStr | Phenomenology of combined resummation for Higgs and Drell-Yan |
| title_full_unstemmed | Phenomenology of combined resummation for Higgs and Drell-Yan |
| title_short | Phenomenology of combined resummation for Higgs and Drell-Yan |
| title_sort | phenomenology of combined resummation for higgs and drell yan |
| topic | QCD Phenomenology |
| url | https://doi.org/10.1007/JHEP12(2020)073 |
| work_keys_str_mv | AT tanjonarrabemananjara phenomenologyofcombinedresummationforhiggsanddrellyan |