434 citations · 5.4k across the 122 of their papers we have counts for
124 papers · 1 filter
Non-linear top-Higgs CP violation
Akanksha Bhardwaj, Christoph Englert, Dorival Gonçalves +1
Searches for additional sources of CP violation at the Large Hadron Collider are a central part of the Higgs physics programme beyond the Standard Model. Studies employing so-calle…
BSM patterns in scalar-sector coupling modifiers
Christoph Englert, Wrishik Naskar, Dave Sutherland
We consider what multiple Higgs interactions may yet reveal about the scalar sector. We estimate the sensitivity of a Feynman topology-templated analysis of weak boson Higgs pair p…
Higgs Footprints of Hefty ALPs
Anisha, Supratim Das Bakshi, Christoph Englert +1
We discuss axion-like particles (ALPs) within the framework of Higgs Effective Field Theory, targeting instances of close alignment of ALP physics with a custodial singlet characte…
Density dependent displaced vertex signatures as a novel probe of light dark sector scalars at the LHC
Spyros Argyropoulos, Clare Burrage, Christoph Englert
Dynamical theories of dark energy predict new degrees of freedom with particular environmental sensitivity to avoid constraints on fifth forces. We show that the similar, yet compl…
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…
On the BSM reach of four top production at the LHC
Anisha, Oliver Atkinson, Akanksha Bhardwaj +3
Many scenarios of beyond the Standard Model (BSM) physics give rise to new top-philic interactions that can be probed at proton machines such as the Large Hadron Collider through a…
Integrating out heavy scalars with modified EOMs: matching computation of dimension-eight SMEFT coefficients
Upalaparna Banerjee, Joydeep Chakrabortty, Christoph Englert +2
The shift in focus towards searches for physics beyond the Standard Model (SM) employing model-independent Effective Field Theory (EFT) methods necessitates a rigorous approach to…
Machine-enhanced CP-asymmetries in the electroweak sector
Noah Clarke Hall, Isaac Criddle, Archie Crossland +4
The violation of charge conjugation (C) and parity (P) symmetries are a requirement for the observed dominance of matter over antimatter in the Universe. As an established effect o…
Quartic Gauge-Higgs couplings: Constraints and Future Directions
Anisha, Oliver Atkinson, Akanksha Bhardwaj +2
Constraints on quartic interactions of the Higgs boson with gauge bosons have been obtained by the experimental LHC collaborations focussing on the so-called framework of flat…
MUonE, muon and electroweak precision constraints within 2HDMs
Oliver Atkinson, Matthew Black, Christoph Englert +2
Two Higgs doublet models are attractive scenarios for physics beyond the Standard Model. In particular, lepton-specific manifestations remain contenders to explain the observed dis…
Implications of the muon anomalous magnetic moment for the LHC and MUonE
Akanksha Bhardwaj, Christoph Englert, Panagiotis Stylianou
We consider the anomalous magnetic moment of the muon , which shows a significant deviation from the Standard Model expectation given the recent measurements at Fermilab and B…
Two Higgs doublets, Effective Interactions and a Strong First-Order Electroweak Phase Transition
Anisha, Lisa Biermann, Christoph Englert +1
It is well-known that type II two Higgs doublet models (2HDMs) can struggle to facilitate a strong first-order electroweak phase transition in the early universe whilst remaining t…
IRC-safe Graph Autoencoder for unsupervised anomaly detection
Oliver Atkinson, Akanksha Bhardwaj, Christoph Englert +3
Anomaly detection through employing machine learning techniques has emerged as a novel powerful tool in the search for new physics beyond the Standard Model. Historically similar t…
The Flavourful Present and Future of 2HDMs at the Collider Energy Frontier
Oliver Atkinson, Matthew Black, Christoph Englert +3
We study the intersection of flavour and collider physics for Two-Higgs-Doublet models of Type I and II. Drawing from the flavour precision-LHC exotics search complementarity, we a…
Machine-enhanced CP-asymmetries in the Higgs sector
Akanksha Bhardwaj, Christoph Englert, Robert Hankache +1
Improving the sensitivity to CP-violation in the Higgs sector is one of the pillars of the precision Higgs programme at the Large Hadron Collider. We present a simple method that a…
Improved Constraints on Effective Top Quark Interactions using Edge Convolution Networks
Oliver Atkinson, Akanksha Bhardwaj, Stephen Brown +3
We explore the potential of Graph Neural Networks (GNNs) to improve the performance of high-dimensional effective field theory parameter fits to collider data beyond traditional re…
Effective connections of , Higgs physics, and the collider frontier
Anisha, Upalaparna Banerjee, Joydeep Chakrabortty +3
We consider scalar extensions of the SM and their effective field theoretic generalisations to illustrate the phenomenological connection between precision measurements of the anom…
Anomaly detection with Convolutional Graph Neural Networks
Oliver Atkinson, Akanksha Bhardwaj, Christoph Englert +2
We devise an autoencoder based strategy to facilitate anomaly detection for boosted jets, employing Graph Neural Networks (GNNs) to do so. To overcome known limitations of GNN auto…
Extended Higgs sectors, effective field theory and Higgs phenomenology
Anisha, Upalaparna Banerjee, Joydeep Chakrabortty +2
We consider the phenomenological implications of charged scalar extensions of the SM Higgs sector in addition to EFT couplings of this new state to SM matter. We perform a detailed…
Landscaping CP-violating BSM scenarios
Supratim Das Bakshi, Joydeep Chakrabortty, Christoph Englert +2
We consider a wide range of UV scenarios with the aim of informing searches for CP violation at the TeV scale using effective field theory techniques. We demonstrate that broad the…
On interference effects in top-philic decay chains
Oliver Atkinson, Christoph Englert, Panagiotis Stylianou
Sizeable exotic Higgs boson production through gluon fusion via top quark loops is correlated with large Higgs decay probabilities into top quark final states, if these are kinemat…
ATLAS Violating CP Effectively
Supratim Das Bakshi, Joydeep Chakrabortty, Christoph Englert +2
CP violation beyond the Standard Model (SM) is a crucial missing piece for explaining the observed matter-antimatter symmetry in the Universe. Recently, the ATLAS experiment at the…
Sensing Higgs cascade decays through memory
Christoph Englert, Malcolm Fairbairn, Michael Spannowsky +2
Beyond the Standard Model scenarios with extensions of the Higgs sector typically predict new resonances that can undergo a series of cascade decays to detectable Standard Model pa…
Di-Higgs resonance searches in weak boson fusion
Rahool Kumar Barman, Christoph Englert, Dorival Gonçalves +1
The search for di-Higgs final states is typically limited at the LHC to the dominant gluon fusion channels, with weak boson fusion only assuming a spectator role. In this work, we…