Publications (86)
Tackling light higgsinos at the ILC
Mikael Berggren, Felix Brümmer, Jenny List +4
In supersymmetric extensions of the Standard Model, higgsino-like charginos and neutralinos are preferred to have masses of the order of the electroweak scale by naturalness argume…
Kinematic Riffs and Interference Effects in Triple Higgs Production in the N2HDM
Wrishik Naskar, Tania Robens, Julia Anabell Ziegler
We investigate the complex kinematic structure involved in resonant production of three Higgs bosons at the Large Hadron Collider (LHC), within the rich scalar spectra of the Next-…
Constraining the Inert Doublet Model at the LHC
Jayita Lahiri, Tania Robens, Krzysztof Rolbiecki
In this work, we analyze experimental exclusion bounds that have been derived within a specific new physics realization, the two Higgs-doublet model with a pseudoscalar singlet (2H…
Signal strength and W-boson mass measurements as a probe of the electro-weak phase transition at colliders -- Snowmass White Paper
Andreas Papaefstathiou, Tania Robens, Graham White
We consider an extension of the scalar sector of the Standard Model (SM) by an additional gauge singlet, which mixes with a part of the SM-like Higgs doublet. Within this model, pa…
HHH Whitepaper
Vuko Brigljevic, Dinko Ferencek, Greg Landsberg +31
We here report on the progress of the HHH Workshop, that took place in Dubrovnik in July 2023. After the discovery of a particle that complies with the properties of the Higgs boso…
The Higgs singlet extension at LHC Run 2
Guillaume Chalons, David Lopez-Val, Tania Robens +1
We discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs bos…
Monte Carlo Simulations for NLO Chargino Production at the ILC
Tania Robens
We present an extension of the Monte Carlo Event Generator Whizard which includes chargino production at the ILC at NLO. We include photons using both a fixed order and a resummati…
TRSM Benchmark Planes -- Snowmass White Paper
Tania Robens
In this whitepaper, I briefly review the Benchmark Planes in the Two-Real-Singlet Model (TRSM), a model that enhances the Standard Model (SM) scalar sector by two real singlets tha…
Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2
Waleed Abdallah, Shehu AbdusSalam, Azar Ahmadov +139
We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpret…
The THDMa revisited
Tania Robens
The THDMa is a new physics model that extends the scalar sector of the Standard Model by an additional doublet as well as a pseudoscalar singlet and allows for mixing between all p…
BSM: Extended Scalar Sectors
Tania Robens, Rui Santos
In particle physics the world is described by a function, the Lagrangian. Each of its sectors characterizes the interactions between the particles of the Standard Model (SM). The a…
Low mass scalars at colliders
Tania Robens
I briefly discuss the search for low mass scalars at Higgs factories as well as available models that render such scalars feasible, where I focus on new developments since the revi…
The Muon Collider
Carlotta Accettura, Simon Adrian, Rohit Agarwal +450
Muons offer a unique opportunity to build a compact high-energy electroweak collider at the 10 TeV scale. A Muon Collider enables direct access to the underlying simplicity of the…
TRSM benchmark planes -- EPS-HEP2023 update
Tania Robens
I briefly review the Benchmark Planes in the Two-Real-Singlet Model (TRSM), a model that enhances the Standard Model (SM) scalar sector by two real singlets that obey a Z2 x Z2' sy…
Extended scalar sectors from all angles -- Mostly at lepton colliders
Tania Robens
I briefly discuss the current state of the art for models with extended scalar sectors and give examples for corresponding investigations, with a focus on processes at lepton colli…
Interference effects in new physics searches
Tania Robens
Interference effects are an important consequence of a correct description in physics theories within and beyond the Standard Model (SM) of particle physics. However, many current…
Search for Invisibly Decaying Light Scalars at the FCC-ee
Aman Desai, Tania Robens
We investigate the production of invisibly decaying light scalars in association with hadronically decaying bosons at the Future Circular Collider-ee at a centre-of-mass energy…
Search for Light Scalars in the TRSM at the LHC
Aman Desai, Kristin Lohwasser, Mohamed Ouchemhou +2
We study the production of Beyond the Standard Model light scalar states in association with a vector boson (, with ) at the LHC. We consider the scenario where…
A survey for low stau yields in the MSSM
Jan Heisig, Jörn Kersten, Boris Panes +1
We study the implications of LHC results for the abundance of long-lived staus after freeze-out from thermal equilibrium in a super-WIMP dark matter scenario. We classify regions i…
An alternative subtraction scheme for next-to-leading order QCD calculations
Cheng-Han Chung, Michael Krämer, Tania Robens
We propose a new subtraction scheme for next-to-leading order QCD calculations. Our scheme is based on the momentum mapping and on the splitting functions derived in the context of…
Di-Higgs production in BSM models
Tania Robens
I give a short overview on di-Higgs productions in models that extend the Standard Model of particle physics by additional fields and particle content, including EFT prescriptions.
Two-Real-Singlet-Model Benchmark Planes
Tania Robens
In this manuscript, I briefly review the Benchmark Planes in the Two-Real-Singlet Model (TRSM), a model that enhances the Standard Model (SM) scalar sector by two real singlets tha…
TRSMScans
Tania Robens, Roxana Rodriguez, Manuel Samaniego +1
The paper introduces TRSMScans, a software tool that automatically computes maximal cross sections for new physics models with extra scalar particles, demonstrated on the Two‑Real‑…
Investigating extended scalar sectors at current and future colliders
Tania Robens
In this work, I briefly report on constraints that can be obtained on new physics models that extend the scalar sector of the Standard Model (SM) of particle physics at the LHC. I…
Two-Real-Singlet Model Benchmark Planes -- A Moriond Update
Tania Robens
I present an update on the the Benchmark Planes in the Two-Real-Singlet Model (TRSM), a model that enhances the Standard Model (SM) scalar sector by two real singlets, where an add…
MuCol Milestone Report No. 7: Consolidated Parameters
Rebecca Taylor, Antoine Chancé, Dario Augusto Giove +459
This document is comprised of a collection of consolidated parameters for the key parts of the muon collider. These consolidated parameters follow on from the October 2024 Prelimin…
Focus topics for the ECFA study on Higgs / Top / EW factories
Jorge de Blas, Patrick Koppenburg, Jenny List +105
In order to stimulate new engagement and trigger some concrete studies in areas where further work would be beneficial towards fully understanding the physics potential of an $e^+e…
Inert Doublet Model in the light of LHC and astrophysical data
Agnieszka Ilnicka, Maria Krawczyk, Tania Robens
We investigate the parameter space of the Inert Doublet Model, which is a straightforward extension of the SM in the scalar sector. We apply a set of constraints both from the theo…
IDM benchmarks for the LHC and future colliders
Jan Kalinowski, Tania Robens, Dorota Sokolowska +1
We present cross-section expectations for various processes and collider options, for benchmark scenarios of the Inert Doublet Model, a Two Higgs Doublet Model with a dark matter c…
MuCol Milestone Report No. 5: Preliminary Parameters
Carlotta Accettura, Simon Adrian, Rohit Agarwal +391
This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. The updated preliminary parameters follow on from the October 2…
An alternative subtraction scheme for NLO QCD calculations
Tania Robens
We discuss an alternative subtraction scheme for NLO QCD calculations, which is based on the splitting kernels of an improved parton shower. As an example, we show results for the…
Sqrt{shat}_{min} resurrected
Tania Robens
We discuss the use of the variable sqrt{shat}_{min}, which has been proposed in order to measure the hard scale of a multi parton final state event using inclusive quantities only,…
IDM and not only
Agnieszka Ilnicka, Maria Krawczyk, Tania Robens +1
In this note, we discuss recent updates to a previous scan for the Inert Doublet Model, a two Higgs doublet model with a dark matter candidate. We explicitly show the inclusion of…
Constraining extended scalar sectors at current and future colliders
Tania Robens
In this proceeding, I summarize results on various new physics extensions of the Standard Model, for models with and without dark matter candidates. I discuss current constraints a…
W+W- + jet: compact analytic results
John Campbell, David Miller, Tania Robens
In the second run of the LHC, which started in April 2015, an accurate understanding of Standard Model processes is more crucial than ever. Processes including electroweak gauge bo…
New Physics with missing energy at future lepton colliders -- Snowmass White Paper
Jan Kalinowski, Tania Robens, Aleksander Filip Zarnecki
Two models that extend the particle content of the SM and provide dark matter candidates, namely the Inert Doublet Model and the Two-Higgs Doublet model with additional pseudoscala…
Constraining Extended Scalar Sectors at the LHC and beyond
Agnieszka Ilnicka, Tania Robens, Tim Stefaniak
We give a brief overview of beyond the Standard Model (BSM) theories with an extended scalar sector and their phenomenological status in the light of recent experimental results. W…
An alternative subtraction scheme for NLO QCD calculations using Nagy-Soper dipoles
Markus Bach, Cheng Han Chung, Tania Robens
In this work, we briefly report on the current status of an alternative subtraction scheme which is based on the splitting kernels of an improved parton shower prescription. Our fo…
The Higgs Singlet extension parameter space in the light of the LHC discovery
Giovanni Marco Pruna, Tania Robens
In this note we propose an overview on the current theoretical and experimental limits on a Higgs singlet extension of the Standard Model. We assume that the Boson which has recent…
Triple Higgs Boson Production at the Large Hadron Collider with Two Real Singlet Scalars
Andreas Papaefstathiou, Tania Robens, Gilberto Tetlalmatzi-Xolocotzi
We investigate the production of three Higgs bosons in the Two Real Singlet extension of the Standard Model, where the scalar sector is augmented by two additional real scalar fiel…
The THDMa revisited -- A preview
Tania Robens
We here present preliminary results on a parameter scan of the THDMa, a new physics model that extends the scalar sector of the Standard Model by an additional doublet as well as a…
An overview on low mass scalars at future lepton colliders
Tania Robens
Although many suggestions for BSM searches at future colliders exist, most of them concentrate on additional scalars that have masses higher than the current SM scalar mass. I will…
Inert Doublet Model in light of LHC Run I and astrophysical data
Agnieszka Ilnicka, Maria Krawczyk, Tania Robens
We discuss the parameter space of the Inert Doublet Model, a two Higgs doublet model with a dark matter candidate. An extensive set of theoretical and experimental constraints on t…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
The Inert Doublet Model at current and future colliders
Jan Kalinowski, Wojciech Kotlarski, Tania Robens +2
We discuss the status of the Inert Doublet Model, a two-Higgs doublet model that obeys a discrete Z2 symmetry and provides a dark matter candidate. We discuss all current theoretic…
LHC Benchmark Scenarios for the Real Higgs Singlet Extension of the Standard Model
Tania Robens, Tim Stefaniak
We present benchmark scenarios for searches for an additional Higgs state in the real Higgs singlet extension of the Standard Model in Run 2 of the LHC. The scenarios are selected…
Nagy-Soper subtraction scheme for multiparton final states
Cheng Han Chung, Tania Robens
In this work, we present the extension of an alternative subtraction scheme for next-to-leading order QCD calculations to the case of an arbitrary number of massless final-state pa…
Constraining the Inert Doublet Model using Vector Boson Fusion
Daniel Dercks, Tania Robens
In this work, we use a recast of the Run II search for invisible Higgs decays within Vector Boson Fusion to constrain the parameter space of the Inert Doublet model, a two Higgs do…
Extended scalar sectors at current and future colliders
Tania Robens
After the discovery of a particle that complies with the properties of the Higgs boson predicted by the Standard Model, particle physics has entered an exciting era. One important…
Exploring Inert Scalars at CLIC
Jan Kalinowski, Wojciech Kotlarski, Tania Robens +2
We investigate the prospect of discovering the Inert Doublet Model scalars at CLIC. As signal processes, we consider the pair-production of inert scalars, namely e+e- -> H+H- and e…
Next-to-leading order predictions for WW+jet production
John M. Campbell, David J. Miller, Tania Robens
In this work we report on a next-to-leading order calculation of WW + jet production at hadron colliders, with subsequent leptonic decays of the W-bosons included. The calculation…
An alternative subtraction scheme for NLO calculations
Tania Robens, Cheng Han Chung, Michael Kramer
We present a new subtraction scheme for next-to-leading order QCD calculations, where the momentum mapping and the splitting functions have been derived in the context of an improv…
Interference effects in resonant di-Higgs production at the LHC in the Higgs singlet extension
Finn Feuerstake, Elina Fuchs, Tania Robens +1
Interference effects are well founded from the quantum mechanical viewpoint and in principle cannot be ignored in realistic studies of New Physics scenarios. In this work, we inves…
More Doublets and Singlets
Tania Robens
I give an overview on models that extend the Standard Model scalar sector by additional gauge singlets or multiplets. I discuss current constraints on such models, as well as possi…
NLO Event Simulation for Chargino Production at the ILC
Tania Robens
We present an extension of the Monte Carlo Event Generator Whizard which includes chargino production at the ILC at NLO. We include photons using both a fixed order and a resummati…
Inert Doublet Model signatures at future colliders
Dorota Sokolowska, Jan Kalinowski, Jan Klamka +4
The Inert Doublet Model (IDM) is one of the simplest extensions of the Standard Model (SM), providing a dark matter candidate. It is a two Higgs doublet model with a discrete …
LHC Benchmark scenarios in the TRSM
Tania Robens
The TRSM is a new physics model that extends the scalar sector of the Standard Model by two additional CP even scalars. It leads to a large variety of interesting signatures, some…
Extended scalar sectors at future colliders
Tania Robens, Jan Kalinowski, Aleksander Filip Zarnecki +1
After the discovery of the Higgs boson in 2012, particle physics has entered an exciting era. An important question is whether the Standard Model of particle physics correctly desc…
Event Generation for Next to Leading Order Chargino Production at the International Linear Collider
Tania Robens
We present a Monte-Carlo event generator for simulating chargino pair production at the ILC at next-to-leading order in the electroweak couplings. We consider two approaches of inc…
Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
Tania Robens, Tim Stefaniak
We discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs bos…
LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
Tomohiro Abe, Yoav Afik, Andreas Albert +50
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (). The coher…
BSM scenarios with missing energy at future lepton colliders
Tania Robens
I will briefly discuss the signatures and discovery prospects of several new physics models containing dark matter candidates at future lepton colliders. In particular, I will disc…
Search for additional scalar bosons within the Inert Doublet Model in a final state with two leptons at the FCC-ee
Anubha Bal, Edward Curtis, Anne-Marie Magnan +3
We present a search for new scalar bosons predicted by the Inert Doublet Model at an machine with centre-of-mass energies of 240 and 365 GeV. Within this model, four addit…
Models with (broken) Z2 symmetries
Tania Robens
I discuss the allowed parameter space as well as collider prospects of several new physics models containing (broken) Z2 symmetries. I focus on effects of current constraints on th…
A short overview on low mass scalars at future lepton colliders -- Snowmass White Paper
Tania Robens
In this whitepaper, I give a short summary on possible channels of low-mass scenarios and their discovery potential at future colliders. This is a summary of talks I recen…
Odderon induced Pion-Photoproduction at e+e- Colliders
Tania Robens
In diffractive hadronic scattering processes, the Pomeron trajectory, originating from Regge theory, significantly contributes to the behavior of the total and differential cross s…
Constraining the Inert Doublet Model
Agnieszka Ilnicka, Maria Krawczyk, Tania Robens
We give a survey on current constraints on the Inert Doublet Model parameter space, including all theoretical as well as experimental limits from collider and astrophysical data. F…
News from Extended Scalar Sectors
Tania Robens
In this proceeding contribution, I give a short overview on selected topics regarding extended scalar sector phenomenology. After a short overview on extended scalar sectors with l…
Two-real-scalar-singlet extension of the SM: LHC phenomenology and benchmark scenarios
Tania Robens, Tim Stefaniak, Jonas Wittbrodt
We investigate the LHC phenomenology of a model where the Standard Model (SM) scalar sector is extended by two real scalar singlets. A discrete s…
The Higgs singlet extension at LHC Run 2
Guillaume Chalons, David Lopez-Val, Tania Robens +1
We discuss the current status of theoretical and experimental constraints on the real Higgs singlet extension of the Standard Model. For the second neutral (non-standard) Higgs bos…
A short overview on low mass scalars at future lepton colliders -- LCWS23 proceedings
Tania Robens
I give a short summary on scenarios with new physics scalars that could be investigated at future colliders. I concentrate on cases where at least one of the additional sc…
The IDM and THDMa -- current constraints and future prospects
Tania Robens
We discuss two models that extend the Standard Model by additional particles, leading to additional scalar states, and also providing dark matter candidates. We briefly review the…
Nagy-Soper subtraction: a review
Tania Robens
In this document, we present a review on an alternative NLO subtraction scheme, based on the splitting kernels of an improved parton shower that promises to facilitate the inclusio…
Searching Inert Scalars at Future ee Colliders
Aleksander Filip Zarnecki, Jan Kalinowski, Jan Klamka +4
The Inert Doublet Model (IDM) is one of the simplest extensions of the Standard Model (SM), providing a dark matter candidate. It is a two Higgs doublet model with a discrete …
Reinterpretation and preservation of data and analyses in HEP
Jon Butterworth, Sabine Kraml, Harrison Prosper +145
Data from particle physics experiments are unique and are often the result of a very large investment of resources. Given the potential scientific impact of these data, which goes…
The THDMa and possible signatures
Tania Robens
I here discuss the THDMa, a type II two Higgs doublet model that is enhanced by an additional pseudoscalar which serves as a portal to the dark matter sector containing a fermionic…
Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
Johannes Braathen, Martin Gabelmann, Tania Robens +1
In this work, we explore the discovery potential of the Inert Doublet Model (IDM) via the vector boson fusion (VBF) channel at a muon collider with centre-of-mass energy of 10 TeV.…
Inert Doublet Model Signatures at Future e+e- Colliders
Aleksander Filip Zarnecki, Jan Kalinowski, Jan Klamka +4
The Inert Doublet Model is one of the simplest extensions of the Standard Model, providing a dark matter candidate. It is a two Higgs doublet model with a discrete symmetry,…
The International Linear Collider: Report to Snowmass 2021
Alexander Aryshev, Ties Behnke, Mikael Berggren +508
The International Linear Collider (ILC) is on the table now as a new global energy-frontier accelerator laboratory taking data in the 2030s. The ILC addresses key questions for our…
Constraining extended scalar sectors at current and future colliders -- an update
Tania Robens
In this proceeding, I discuss several models that extend the scalar sector of the Standard Model by additional matter states. I here focus on results for models with singlet extens…
A short overview on low mass scalars at future lepton colliders
Tania Robens
In this manuscript, I give a short summary on scenarios with new physics scalars that could be investigated at future colliders. I concentrate on cases where at least one…
Extended scalar sectors from all angles (in 15 minutes)
Tania Robens
In this proceedings contribution, I briefly summarize various aspects that are important in the discussions of new physics searches with novel scalar states, at current and future…
Overview on low mass scalars at facilities -- theory
Tania Robens
I give a short summary of scenarios with new physics scalars that could be investigated at future colliders. I concentrate on cases where at least one of the additional sc…
Report of the Topical Group on Electroweak Precision Physics and Constraining New Physics for Snowmass 2021
Alberto Belloni, Ayres Freitas, Junping Tian +65
The precise measurement of physics observables and the test of their consistency within the standard model (SM) are an invaluable approach, complemented by direct searches for new…
WW + jet at 14 and 100 TeV
John Campbell, David Miller, Tania Robens
In the current LHC run, an accurate understanding of Standard Model processes is extremely important. Processes including electroweak gauge bosons serve as standard candles for SM…
Benchmarking the Inert Doublet Model for e+ e- colliders
Jan Kalinowski, Wojciech Kotlarski, Tania Robens +2
We present benchmarks for the Inert Doublet Model, a Two Higgs Doublet Model with a dark matter candidate. They are consistent with current constraints on direct detection, includi…