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Constraining CP violating operators in charged and neutral triple gauge couplings (2021)
Journal Article
Bieköetter, A., Gregg, P., Krauss, F., & Schöenherr, M. (2021). Constraining CP violating operators in charged and neutral triple gauge couplings. Physics Letters B, 817, https://doi.org/10.1016/j.physletb.2021.136311

We constrain CP-violating charged and neutral anomalous triple gauge couplings using LHC measurements and projections of diboson and VBF Vjj production, both with subsequent leptonic decays. For triple gauge couplings involving W bosons we analyse di... Read More about Constraining CP violating operators in charged and neutral triple gauge couplings.

Event Generation with Sherpa 2.2 (2019)
Journal Article
Bothmann, E., Chahal, G. S., Hoche, S., Krause, J., Krauss, F., Kuttimalai, S., …Siegert, F. (2019). Event Generation with Sherpa 2.2. SciPost Physics, 7, Article 034. https://doi.org/10.21468/scipostphys.7.3.034

Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarize essential features and improvements of the Sherpa 2.2 release series, which is heavily used for event... Read More about Event Generation with Sherpa 2.2.

Accurate simulation of W, Z, and Higgs boson decays in Sherpa (2019)
Journal Article
Krauss, F., Lindert, J. M., Linten, R., & Schönherr, M. (2019). Accurate simulation of W, Z, and Higgs boson decays in Sherpa. The European Physical Journal C, 79(2), Article 143. https://doi.org/10.1140/epjc/s10052-019-6614-x

We discuss the inclusion of next-to–next-to leading order electromagnetic and of next-to leading order electroweak corrections to the leptonic decays of weak gauge and Higgs bosons in the Sherpa event generator. To this end, we modify the Yennie– Fra... Read More about Accurate simulation of W, Z, and Higgs boson decays in Sherpa.

Multi-jet merged top-pair production including electroweak corrections (2018)
Journal Article
Gütschow, C., Lindert, J. M., & Schoenherr, M. (2018). Multi-jet merged top-pair production including electroweak corrections. The European Physical Journal C, 78(4), Article 317. https://doi.org/10.1140/epjc/s10052-018-5804-2

We present theoretical predictions for the production of top-quark pairs in association with jets at the LHC including electroweak (EW) corrections. First, we present and compare differential predictions at the fixed-order level for tt¯ and tt¯+jet p... Read More about Multi-jet merged top-pair production including electroweak corrections.

Single top-quark production with sherpa (2018)
Journal Article
Bothmann, E., Krauss, F., & Schönherr, M. (2018). Single top-quark production with sherpa. The European Physical Journal C, 78(3), Article 220. https://doi.org/10.1140/epjc/s10052-018-5696-1

We present results at next-to-leading order accuracy in QCD for single top-quark production in the t, s and tW channels at the lhc at a centre-of-mass energy of 8TeV, obtained with the sherpa event generator. We find them in very good agreement with... Read More about Single top-quark production with sherpa.

Precise predictions for V+jets dark matter backgrounds (2017)
Journal Article
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. https://doi.org/10.1140/epjc/s10052-017-5389-1

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... Read More about Precise predictions for V+jets dark matter backgrounds.

NLO QCD+EW predictions for 2ℓ2ν diboson signatures at the LHC (2017)
Journal Article
Kallweit, S., Lindert, J., Pozzorini, S., & Schoenherr, M. (2017). NLO QCD+EW predictions for 2ℓ2ν diboson signatures at the LHC. Journal of High Energy Physics, 2017(11), Article 120. https://doi.org/10.1007/jhep11%282017%29120

We present next-to-leading order (NLO) calculations including QCD and electroweak (EW) corrections for 2ℓ2ν diboson signatures with two opposite-charge leptons and two neutrinos. Specifically, we study the processes pp→e+μ−νeν¯¯¯μpp→e+μ−νeν¯μ and pp→... Read More about NLO QCD+EW predictions for 2ℓ2ν diboson signatures at the LHC.

Precision studies of observables in pp → W → lνl and pp → γ , Z → l+l− processes at the LHC (2017)
Journal Article
Alioli, S., Arbuzov, A., Bardin, D. Y., Barzè, L., Bernaciak, C., Bondarenko, S., …Zanderighi, G. (2017). Precision studies of observables in pp → W → lνl and pp → γ , Z → l+l− processes at the LHC. The European Physical Journal C, 77(5), Article 280. https://doi.org/10.1140/epjc/s10052-017-4832-7

This report was prepared in the context of the LPCC Electroweak Precision Measurements at the LHC WG (https://lpcc.web.cern.ch/lpcc/index.php?page=electroweak_wg) and summarizes the activity of a subgroup dedicated to the systematic comparison of pub... Read More about Precision studies of observables in pp → W → lνl and pp → γ , Z → l+l− processes at the LHC.

Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower (2015)
Journal Article
Höche, S., Krauss, F., Maierhöfer, P., Pozzorini, S., Schönherr, M., & Siegert, F. (2015). Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower. Physics Letters B, 748, 74-78. https://doi.org/10.1016/j.physletb.2015.06.060

We present differential cross sections for the production of top-quark pairs in conjunction with up to two jets, computed at next-to-leading order in perturbative QCD and consistently merged with a parton shower in the Sherpa+OpenLoops framework. Top... Read More about Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower.

LHAPDF6: parton density access in the LHC precision era (2015)
Journal Article
Buckley, A., Ferrando, J., Lloyd, S., Nordström, K., Page, B., Rüfenacht, M., …Watt, G. (2015). LHAPDF6: parton density access in the LHC precision era. The European Physical Journal C, 75(3), Article 132. https://doi.org/10.1140/epjc/s10052-015-3318-8

The Fortran LHAPDF library has been a long-term workhorse in particle physics, providing standardised access to parton density functions for experimental and phenomenological purposes alike, following on from the venerable PDFLIB package. During Run... Read More about LHAPDF6: parton density access in the LHC precision era.

Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production (2015)
Journal Article
Buschmann, M., Gonçalves, D., Kuttimalai, S., Schönherr, M., Krauss, F., & Plehn, T. (2015). Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production. Journal of High Energy Physics, 2015(02), https://doi.org/10.1007/jhep02%282015%29038

In the upcoming LHC run we will be able to probe the structure of the loopinduced Higgs-gluon coupling through kinematics. First, we establish state-of-the-art simulations with up to two jets to next-to-leading order including top mass effects. They... Read More about Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production.

Uncertainties in MEPS@NLO calculations of h+jets (2014)
Journal Article
Höche, S., Krauss, F., & Schönherr, M. (2014). Uncertainties in MEPS@NLO calculations of h+jets. Physical Review D, 90(1), https://doi.org/10.1103/physrevd.90.014012

Uncertainties in the simulation of Higgs boson production with up to two jets at next-to-leading-order accuracy are investigated. Traditional uncertainty estimates based on scale variations are extended employing different functional forms for the ce... Read More about Uncertainties in MEPS@NLO calculations of h+jets.

Measuring collinear W emissions inside jets (2014)
Journal Article
Krauss, F., Petrov, P., Schönherr, M., & Spannowsky, M. (2014). Measuring collinear W emissions inside jets. Physical Review D, 89(11), Article 114006. https://doi.org/10.1103/physrevd.89.114006

Single and multiple emission of electroweak gauge bosons and in particular of W bosons is discussed in the parton shower language. Algorithms and observables for the reconstruction of both leptonically and hadronically decaying W bosons inside light... Read More about Measuring collinear W emissions inside jets.

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs (2014)
Journal Article
Alioli, S., Badger, S., Bellm, J., Biedermann, B., Boudjema, F., Cullen, G., …Zaro, M. (2014). Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs. Computer Physics Communications, 185(2), 560-571. https://doi.org/10.1016/j.cpc.2013.10.020

We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements.

QCD matrix elements + parton showers: the NLO case (2013)
Journal Article
Höche, S., Krauss, F., Schönherr, M., & Siegert, F. (2013). QCD matrix elements + parton showers: the NLO case. Journal of High Energy Physics, 2013(4), Article 027. https://doi.org/10.1007/jhep04%282013%29027

We present a process-independent technique to consistently combine next-to-leading order parton-level calculations of varying jet multiplicity and parton showers. Double counting is avoided by means of a modified truncated shower scheme. This method... Read More about QCD matrix elements + parton showers: the NLO case.

W+n-Jet Predictions at the Large Hadron Collider at Next-To-Leading Order Matched with a Parton Shower (2013)
Journal Article
Höche, S., Krauss, F., Schönherr, M., & Siegert, F. (2013). W+n-Jet Predictions at the Large Hadron Collider at Next-To-Leading Order Matched with a Parton Shower. Physical Review Letters, 110(5), https://doi.org/10.1103/physrevlett.110.052001

For the first time, differential cross sections for the production of W bosons in conjunction with up to three jets, computed at next-to leading order in QCD and including parton shower corrections, are presented and compared to recent experimental d... Read More about W+n-Jet Predictions at the Large Hadron Collider at Next-To-Leading Order Matched with a Parton Shower.

NLO QCD matrix elements + parton showers in e+e− → hadrons (2013)
Journal Article
Gehrmann, T., Höche, S., Krauss, F., Schönherr, M., & Siegert, F. (2013). NLO QCD matrix elements + parton showers in e+e− → hadrons. Journal of High Energy Physics, 2013(1), https://doi.org/10.1007/jhep01%282013%29144

We present a new approach to combine multiple NLO parton-level calculations matched to parton showers into a single inclusive event sample. The method provides a description of hard multi-jet configurations at next-to leading order in the perturbativ... Read More about NLO QCD matrix elements + parton showers in e+e− → hadrons.