782 citations · 11.8k across the 249 of their papers we have counts for
230 papers · 1 filter
Electroweak and Single Top-Quark Conspiracy in Current LHC Data
Christoph Englert, Roman Kogler, Michael Spannowsky
Recent LHC measurements of electroweak single top-quark and top-quark associated Higgs boson production show a number of rate shifts, while related multiboson channels remain close…
Differentiating Dimension-6 and Dimension-8 Effects in SMEFT at the HL-LHC
Manimala Mitra, Shakeel Ur Rahaman, Subham Saha +1
We study dimension-eight effects in the Standard Model Effective Field Theory extended by right-handed neutrinos (SMEFT). Using the Hilbert series formalism, we derive the compl…
Weak boson probes of Higgs unitarity restoration at 10 TeV parton colliders
Christoph Englert, Wrishik Naskar, Andrew D. Pilkington +1
Higgs coupling deviations, at levels accessible to the high-luminosity LHC, can imply a phenomenological no-lose theorem for the next generation of collider facilities. Correlating…
Searching for New Physics with the Large Hadron Collider
Michael Spannowsky
This chapter provides an introduction to collider phenomenology, explaining how theoretical concepts are translated into experimental analyses at the Large Hadron Collider (LHC). B…
Sensitivity of -boson measurements to low-mass right-handed neutrinos
Rodrigo Alonso, Sam Bates, Chris Hays +2
A low-mass right-handed neutrino could interact with electroweak bosons via mixing, a mediator particle, or loop corrections. Using an effective field theory, we determine constrai…
Harnessing Higgs Kinematics for HEFT Constraints
Christoph Englert, Tom Ingebretsen Carlson, Jörgen Sjölin +1
We present a momentum-dependent reweighting strategy to extend current LHC di-Higgs analyses within the -framework and SMEFT into the bosonic sector of the Higgs Effective Field…
Potential Blind Directions at TeraZ
Mikael Chala, Juan Carlos Criado, Michael Spannowsky
The next generation of high-luminosity electron-positron colliders, such as FCC-ee and CEPC operating at the pole (TeraZ), is expected to deliver unprecedented precision in ele…
Distorting the Top Resonance with Effective Interactions
Felix Egle, Christoph Englert, Margarete Mühlleitner +1
Interference effects in effective field theory (EFT) analyses can significantly distort sensitivity expectations, leaving subtle yet distinct signatures in the reconstruction of fi…
Limits on New Lorentz-violating Bosons
P. Carenza, J. Jaeckel, G. Lucente +3
We obtain novel constraints on new scalar fields interacting with Standard Model fermions through Lorentz-violating couplings, bridging searches for scalar particles and Lorentz-sy…
Electroweak Scalar Effects Beyond Dimension-6 in SMEFT
Nilabhra Adhikary, Tisa Biswas, Joydeep Chakrabortty +2
The Standard Model Effective Field Theory (SMEFT) provides a robust framework for probing deviations in the couplings of Standard Model particles from their theoretical predictions…
Impact of New Physics on Momentum-Dependent Particle Widths and Propagators
Christoph Englert, Wrishik Naskar, Michael Spannowsky
We investigate the impact of momentum-dependent particle widths and propagators on gauge and Higgs bosons and the top quark within the Standard Model (SM) and its SMEFT extensions…
Probing right-handed neutrinos via tri-lepton signals at the HL-LHC
Manimala Mitra, Subham Saha, Michael Spannowsky +1
Neutrino oscillation experiments have provided direct evidence for the existence of neutrino masses. The seesaw mechanism explains the smallness of these masses through the introdu…
Field Redefinitions in Classical Field Theory with some Quantum Perspectives
Juan Carlos Criado, Joerg Jaeckel, Michael Spannowsky
In quantum field theories, field redefinitions are often employed to remove redundant operators in the Lagrangian, making calculations simpler and physics more evident. This techni…
Electroweak corrections and EFT operators in production at the LHC
Shankha Banerjee, Daniel Reichelt, Michael Spannowsky
We investigate the impact of electroweak corrections and effective field theory operators on production at the Large Hadron Collider (LHC). Utilizing the Standard Model ef…
Equivariant, Safe and Sensitive -- Graph Networks for New Physics
Akanksha Bhardwaj, Christoph Englert, Wrishik Naskar +2
This study introduces a novel Graph Neural Network (GNN) architecture that leverages infrared and collinear (IRC) safety and equivariance to enhance the analysis of collider data f…
Dispelling the myth for the High-Luminosity LHC
Alberto Belvedere, Christoph Englert, Roman Kogler +1
Extrapolations of sensitivity to new interactions and standard model parameters critically inform the programme at the Large Hadron Collider (LHC) and potential future collider cas…
Higgs boson off-shell measurements probe non-linearities
Anisha, Christoph Englert, Roman Kogler +1
The measurements of off-shell Higgs boson contributions in massive gauge boson pair production are known to probe its electroweak interactions across different energy scales. Often…
Interpretable deep learning models for the inference and classification of LHC data
Vishal S. Ngairangbam, Michael Spannowsky
The Shower Deconstruction methodology is pivotal in distinguishing signal and background jets, leveraging the detailed information from perturbative parton showers. Rooted in the N…
Deuterium spectroscopy for enhanced bounds on physics beyond the Standard Model
Robert M. Potvliege, Adair Nicolson, Matthew P. A. Jones +1
We consider the impact of combining precision spectroscopic measurements made in atomic hydrogen with similar measurements made in atomic deuterium on the search for physics beyond…
Hypergraphs in LHC Phenomenology -- The Next Frontier of IRC-Safe Feature Extraction
Partha Konar, Vishal S. Ngairangbam, Michael Spannowsky
In this study, we critically evaluate the approximation capabilities of existing infra-red and collinear (IRC) safe feature extraction algorithms, namely Energy Flow Networks (EFNs…
Hunting for Neutral Leptons with Ultra-High-Energy Cosmic Rays
Robert Heighton, Lucien Heurtier, Michael Spannowsky
Next-generation large-volume detectors, such as GRAND, POEMMA, Trinity, TAROGE-M, TAMBO, or PUEO, have been designed to search for ultra-high-energy cosmic rays (UHECRs) with unpre…
EFT, decoupling, Higgs boson mixing, and higher dimensional operators
Upalaparna Banerjee, Joydeep Chakrabortty, Christoph Englert +3
The effective field theory (EFT) framework is a precise approximation procedure when the inherent assumptions of a large-scale separation between the Standard Model (SM) and new in…
Generative Invertible Quantum Neural Networks
Armand Rousselot, Michael Spannowsky
Invertible Neural Networks (INN) have become established tools for the simulation and generation of highly complex data. We propose a quantum-gate algorithm for a Quantum Invertibl…
Probing Poincaré Violation
Rick S. Gupta, Joerg Jaeckel, Michael Spannowsky
Time and space translation invariance, giving rise to energy and momentum conservation, are not only amongst the most fundamental but also the most generally accepted symmetry assu…