Soft gluon resummation in the signal-background interference process of gg(→ h ∗) → ZZ

Li, Chong Sheng; Li, Hai Tao; Shao, Dingyu; Wang, Jian (2015). Soft gluon resummation in the signal-background interference process of gg(→ h ∗) → ZZ. Journal of High Energy Physics, 2015(8) Springer 10.1007/JHEP08(2015)065

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We present a precise theoretical prediction for the signal-background interference process of gg(→ h ∗) → ZZ, which is useful to constrain the Higgs boson decay width and to measure Higgs couplings to the SM particles. The approximate NNLO K-factor is in the range of 2.05 − 2.45 (1.85 − 2.25), depending on M ZZ , at the 8 (13) TeV LHC. And the soft gluon resummation can increase the approximate NNLO result by about 10% at both the 8 TeV and 13 TeV LHC. The theoretical uncertainties including the scale, uncalculated multi-loop amplitudes of the background and PDF+αs are roughly O(10%) at NNLL′. We also confirm that the approximate K-factors in the interference and the pure signal processes are the same.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Shao, Dingyu

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

27 Aug 2015 16:06

Last Modified:

26 Jun 2016 02:06

Publisher DOI:

10.1007/JHEP08(2015)065

ArXiv ID:

1504.02388v2

BORIS DOI:

10.7892/boris.71333

URI:

https://boris.unibe.ch/id/eprint/71333

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