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Precise predictions for V+jets dark matter backgrounds

Lindert, J.M.; Pozzorini, S.; Boughezal, R.; Campbell, J.M.; Denner, A.; Dittmaier, S.; Gehrmann-De Ridder, A.; Gehrmann, T.; Glover, N.; Huss, A.; Kallweit, S.; Maierhöfer, P.; Mangano, M.L.; Morgan, T.A.; Mück, A.; Petriello, F.; Salam, G.P.; Schoenherr, M.; Williams, C.

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J.M. Lindert

S. Pozzorini

R. Boughezal

J.M. Campbell

A. Denner

S. Dittmaier

A. Gehrmann-De Ridder

T. Gehrmann

A. Huss

S. Kallweit

P. Maierhöfer

M.L. Mangano

T.A. Morgan

A. Mück

F. Petriello

G.P. Salam

C. Williams


High-energy jets recoiling against missing transverse energy (MET) are powerful probes of dark matter at the LHC. Searches based on large MET signatures require a precise control of the Z(νν¯)+Z(νν¯)+ jet background in the signal region. This can be achieved by taking accurate data in control regions dominated by Z(ℓ+ℓ−)+Z(ℓ+ℓ−)+ jet, W(ℓν)+W(ℓν)+ jet and γ+γ+ jet production, and extrapolating to the Z(νν¯)+Z(νν¯)+ jet background by means of precise theoretical predictions. In this context, recent advances in perturbative calculations open the door to significant sensitivity improvements in dark matter searches. In this spirit, we present a combination of state-of-the-art calculations for all relevant V+V+ jets processes, including throughout NNLO QCD corrections and NLO electroweak corrections supplemented by Sudakov logarithms at two loops. Predictions at parton level are provided together with detailed recommendations for their usage in experimental analyses based on the reweighting of Monte Carlo samples. Particular attention is devoted to the estimate of theoretical uncertainties in the framework of dark matter searches, where subtle aspects such as correlations across different V+V+ jet processes play a key role. The anticipated theoretical uncertainty in the Z(νν¯)+Z(νν¯)+ jet background is at the few percent level up to the TeV range.


Lindert, J., Pozzorini, S., Boughezal, R., Campbell, J., Denner, A., Dittmaier, S., …Williams, C. (2017). Precise predictions for V+jets dark matter backgrounds. The European Physical Journal C, 77(12), Article 829.

Journal Article Type Article
Acceptance Date Nov 15, 2017
Online Publication Date Dec 5, 2017
Publication Date Dec 5, 2017
Deposit Date Jan 5, 2018
Publicly Available Date Jan 5, 2018
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 77
Issue 12
Article Number 829


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Copyright Statement
© The Author(s) 2017.<br /> This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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