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Herwig 7.2 Release Note
Johannes Bellm, Gavin Bewick, Silvia Ferrario Ravasio +13
A new release of the Monte Carlo event generator Herwig (version 7.2) is now available. This version introduces a number of improvements, notably: improvements to the simulation of…
VBSCan Thessaloniki 2018 Workshop Summary
Riccardo Bellan, Jakob Beyer, Carsten Bittrich +61
This document reports the first year of activity of the VBSCan COST Action network, as summarised by the talks and discussions happened during the VBSCan Thessaloniki 2018 workshop…
Beyond the Standard Model Physics at the HL-LHC and HE-LHC
X. Cid Vidal, M. D'Onofrio, P. J. Fox +294
This is the third out of five chapters of the final report [1] of the Workshop on Physics at HL-LHC, and perspectives on HE-LHC [2]. It is devoted to the study of the potential, in…
The Gauge-Higgs Legacy of the LHC Run II
Anke Biekötter, Tyler Corbett, Tilman Plehn
We present a global analysis of the Higgs and electroweak sector based on LHC Run II and electroweak precision observables. We show which measurements provide the leading constrain…
Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report
J. Bendavid, F. Caola, V. Ciulli +102
This Report summarizes the proceedings of the 2017 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments relevant for high precision Standard…
Precise predictions for same-sign W-boson scattering at the LHC
Alessandro Ballestrero, Benedikt Biedermann, Simon Brass +21
Vector-boson scattering processes are of great importance for the current run-II and future runs of the Large Hadron Collider. The presence of triple and quartic gauge couplings in…
Stress-testing the VBF approximation in multijet final states
Francisco Campanario, Terrance M. Figy, Simon Plätzer +3
We consider electro-weak Higgs plus three jets production at NLO QCD beyond strict VBF acceptance cuts. We investigate, for the first time, how accurate the VBF approximation is in…
Higgs Factories: Higgs-Strahlung versus W-Fusion
Remi Lafaye, Tilman Plehn, Michael Rauch +1
Higgs factories will be able to measure Higgs properties, and in particular Higgs couplings with high precision. In a follow-up to an earlier analysis we study the impact of the Hi…
Herwig 7.1 Release Note
Johannes Bellm, Stefan Gieseke, David Grellscheid +13
A new release of the Monte Carlo event generator Herwig (version 7.1) is now available. This version introduces a number of improvements, notably: multi-jet merging with the dipole…
Jet clustering dependence of VBF Higgs production
Michael Rauch, Dieter Zeppenfeld
Precise predictions for Higgs production via vector-boson fusion play an important role when testing the properties of the Higgs boson and probing new-physics effects. While the in…
Vector-Boson Fusion and Vector-Boson Scattering
Michael Rauch
Vector-boson fusion and vector-boson scattering are an important class of processes for the Large Hadron Collider at CERN. It is characterized by two high-energetic jets in the for…
Learning from the New Higgs-like Scalar before It Vanishes
Martin Bauer, Anja Butter, Juan Gonzalez-Fraile +2
Motivated by a di-photon anomaly observed by ATLAS and CMS we develop an SFitter analysis for a combined electroweak-Higgs sector, and a scalar portal at the LHC. The theoretical d…
Parton-shower Effects in Vector-Boson-Fusion Processes
Michael Rauch, Simon Plätzer
We investigate the effects of combining next-to-leading order QCD results with parton-shower effects in production via vector-boson fusion including leptonic decays. Usi…
Parton Shower Matching Systematics in Vector-Boson-Fusion WW Production
Michael Rauch, Simon Plätzer
We perform a detailed analysis of next-to-leading order plus parton-shower matching in vector-boson-fusion WW production including leptonic decays. The study is performed in the He…
NLO efforts in Herwig++
Christian Reuschle, Johannes Bellm, Stefan Gieseke +13
With the advent and recent extension of the BLHA standard to interface Monte Carlo event generators and one-loop matrix element providers, the Herwig++ event generator has expanded…
Herwig 7.0 / Herwig++ 3.0 Release Note
Johannes Bellm, Stefan Gieseke, David Grellscheid +13
A major new release of the Monte Carlo event generator Herwig++ (version 3.0) is now available. This release marks the end of distinguishing Herwig++ and HERWIG development and the…
The Non-Linear Higgs Legacy of the LHC Run I
Tyler Corbett, Oscar J. P. Eboli, Dorival Goncalves +3
In the recent paper on "The Higgs Legacy of the LHC Run I" we interpreted the LHC Higgs results in terms of an effective Lagrangian using the SFitter framework. For the on-shell Hi…
Invisible Higgs Decays to Hooperons in the NMSSM
Anja Butter, Tilman Plehn, Michael Rauch +3
The galactic center excess of gamma ray photons can be naturally explained by light Majorana fermions in combination with a pseudoscalar mediator. The NMSSM provides exactly these…
The Higgs Legacy of the LHC Run I
Tyler Corbett, Oscar J. P. Eboli, Dorival Goncalves +3
Based on Run I data we present a comprehensive analysis of Higgs couplings. For the first time this SFitter analysis includes independent tests of the Higgs-gluon and top Yukawa co…
ZZ production at high transverse momenta beyond NLO QCD
Francisco Campanario, Michael Rauch, Sebastian Sapeta
We study the production of the four-lepton final state , predominantly produced by a pair of electroweak Z bosons, ZZ. Using the LoopSim method, we merge NLO QCD r…
Multi-boson Production in Weak Boson Fusion
Michael Rauch, Francisco Campanario, Bastian Feigl +1
The production of multiple gauge bosons via weak boson fusion is an important process at the LHC. It is relevant as a background process appearing in many searches and measurements…
Precision Measurements of Higgs Couplings: Implications for New Physics Scales
C. Englert, A. Freitas, M. Muhlleitner +4
The measured properties of the recently discovered Higgs boson are in good agreement with predictions from the Standard Model. However, small deviations in the Higgs couplings may…
Release Note - VBFNLO 2.7.0
J. Baglio, J. Bellm, F. Campanario +11
VBFNLO is a flexible parton level Monte Carlo program for the simulation of vector boson fusion (VBF), double and triple vector boson (plus jet) production as well as QCD-induced s…
Monte Carlo tools for studies of non-standard electroweak gauge boson interactions in multi-boson processes: A Snowmass White Paper
Celine Degrande, Oscar Eboli, Bastian Feigl +7
In this Snowmass 2013 white paper, we review the effective field theory approach for studies of non-standard electroweak interactions in electroweak vector boson pair and triple pr…