Pseudo-scalar Higgs boson production at N3LOA+N3LL
We consider the production of a pseudo-scalar particle A at the LHC, and present accurate theoretical predictions for its inclusive cross section in gluon fusion. The prediction is based on combining fixed-order perturbation theory and all-order threshold resummation. At fixed order we include the e...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
Springer Verlag
2016
|
| _version_ | 1797068540126167040 |
|---|---|
| author | Ahmed, T Bonvini, M Kumar, M Mathews, P Rana, N Ravindran, V Rottoli, L |
| author_facet | Ahmed, T Bonvini, M Kumar, M Mathews, P Rana, N Ravindran, V Rottoli, L |
| author_sort | Ahmed, T |
| collection | OXFORD |
| description | We consider the production of a pseudo-scalar particle A at the LHC, and present accurate theoretical predictions for its inclusive cross section in gluon fusion. The prediction is based on combining fixed-order perturbation theory and all-order threshold resummation. At fixed order we include the exact next-to-next-to-leading order (NNLO) plus an approximate next-to-next-to-next-to-leading order (N 3 LO A ) which is based on the recent computation at this order for the scalar case. We then add threshold resummation at next-to-next-to-next-to leading logarithmic accuracy (N 3 LL ′ ). Various forms of threshold resummation are considered, differing by the treatment of subleading terms, allowing a robust estimate of the theoretical uncertainties due to missing higher orders. With particular attention to pseudo-scalar masses of 200 and 750 GeV, we also observe that perturbative convergence is much improved when resummation is included. Additionally, results obtained with threshold resummation in direct QCD are compared with analogous results as computed in soft-collinear effective theory, which turn out to be in good agreement. We provide precise predictions for pseudo-scalar inclusive cross section at 13 TeV LHC for a wide range of masses. The results are available through updated versions of the public codes ggHiggs and TROLL. |
| first_indexed | 2024-03-06T22:12:04Z |
| format | Journal article |
| id | oxford-uuid:5225c2d1-c664-4b7d-a852-4afc1f15dd5f |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:12:04Z |
| publishDate | 2016 |
| publisher | Springer Verlag |
| record_format | dspace |
| spelling | oxford-uuid:5225c2d1-c664-4b7d-a852-4afc1f15dd5f2022-03-26T16:23:52ZPseudo-scalar Higgs boson production at N3LOA+N3LLJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5225c2d1-c664-4b7d-a852-4afc1f15dd5fSymplectic Elements at OxfordSpringer Verlag2016Ahmed, TBonvini, MKumar, MMathews, PRana, NRavindran, VRottoli, LWe consider the production of a pseudo-scalar particle A at the LHC, and present accurate theoretical predictions for its inclusive cross section in gluon fusion. The prediction is based on combining fixed-order perturbation theory and all-order threshold resummation. At fixed order we include the exact next-to-next-to-leading order (NNLO) plus an approximate next-to-next-to-next-to-leading order (N 3 LO A ) which is based on the recent computation at this order for the scalar case. We then add threshold resummation at next-to-next-to-next-to leading logarithmic accuracy (N 3 LL ′ ). Various forms of threshold resummation are considered, differing by the treatment of subleading terms, allowing a robust estimate of the theoretical uncertainties due to missing higher orders. With particular attention to pseudo-scalar masses of 200 and 750 GeV, we also observe that perturbative convergence is much improved when resummation is included. Additionally, results obtained with threshold resummation in direct QCD are compared with analogous results as computed in soft-collinear effective theory, which turn out to be in good agreement. We provide precise predictions for pseudo-scalar inclusive cross section at 13 TeV LHC for a wide range of masses. The results are available through updated versions of the public codes ggHiggs and TROLL. |
| spellingShingle | Ahmed, T Bonvini, M Kumar, M Mathews, P Rana, N Ravindran, V Rottoli, L Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title | Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title_full | Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title_fullStr | Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title_full_unstemmed | Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title_short | Pseudo-scalar Higgs boson production at N3LOA+N3LL |
| title_sort | pseudo scalar higgs boson production at n3loa n3ll |
| work_keys_str_mv | AT ahmedt pseudoscalarhiggsbosonproductionatn3loan3ll AT bonvinim pseudoscalarhiggsbosonproductionatn3loan3ll AT kumarm pseudoscalarhiggsbosonproductionatn3loan3ll AT mathewsp pseudoscalarhiggsbosonproductionatn3loan3ll AT ranan pseudoscalarhiggsbosonproductionatn3loan3ll AT ravindranv pseudoscalarhiggsbosonproductionatn3loan3ll AT rottolil pseudoscalarhiggsbosonproductionatn3loan3ll |