Transverse-momentum spectra of electroweak bosons near threshold at NNLO

Becher, Thomas; Bell, Guido; Lorentzen, Knut Christian; Marti, Stefanie Laura (2014). Transverse-momentum spectra of electroweak bosons near threshold at NNLO. Journal of High Energy Physics, 2014(2), pp. 1-33. Springer 10.1007/JHEP02(2014)004

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We obtain the next-to-next-to-leading order corrections to transverse-momentum spectra of W, Z and Higgs bosons near the partonic threshold. In the threshold limit, the electroweak boson recoils against a low-mass jet and all radiation is either soft, or collinear to the jet or the beam directions. We extract the virtual corrections from known results for the relevant two-loop four-point amplitudes and combine them with the soft and collinear two-loop functions as defined in Soft-Collinear Effective Theory. We have implemented these results in a public code PeTeR and present numerical results for the threshold resummed cross section of W and Z bosons at next-to-next-to-next-to-leading logarithmic accuracy, matched to next-to-leading fixed-order perturbation theory. The two-loop corrections lead to a moderate increase in the cross section and reduce the scale uncertainty by about a factor of two. The corrections are significantly larger for Higgs production.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)

UniBE Contributor:

Becher, Thomas; Bell, Guido; Lorentzen, Knut Christian and Marti, Stefanie Laura

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

28 Feb 2014 10:15

Last Modified:

09 Oct 2019 16:29

Publisher DOI:

10.1007/JHEP02(2014)004

BORIS DOI:

10.7892/boris.42459

URI:

https://boris.unibe.ch/id/eprint/42459

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