G. Landsberg
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View article: Reconstruction of boosted and resolved multi-Higgs-boson events with symmetry-preserving attention networks
Reconstruction of boosted and resolved multi-Higgs-boson events with symmetry-preserving attention networks Open
A bstract The production of multiple Higgs bosons at the CERN LHC provides a direct way to measure the trilinear and quartic Higgs self-interaction strengths as well as potential access to beyond the standard model effects that can enhance…
View article: t-channel dark matter models – a whitepaper
t-channel dark matter models – a whitepaper Open
This report, summarising work achieved in the context of the LHC Dark Matter Working Group, investigates the phenomenology of t -channel dark matter models, spanning minimal setups with a single dark matter candidate and mediator to more c…
View article: Reconstruction of boosted and resolved multi-Higgs-boson events with symmetry-preserving attention networks
Reconstruction of boosted and resolved multi-Higgs-boson events with symmetry-preserving attention networks Open
The production of multiple Higgs bosons at the CERN LHC provides a direct way to measure the trilinear and quartic Higgs self-interaction strengths as well as potential access to beyond the standard model effects that can enhance productio…
View article: HHH Whitepaper
HHH Whitepaper Open
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 boson of the Standard Model, all Standard Model (SM) parameters…
View article: Search for new particles decaying to two jets with the D0 detector
Search for new particles decaying to two jets with the D0 detector Open
Results from a search for new particles decaying to dijets in $\\sqrt{s} = 1.8 TeV$ $p\\bar{p}$ collisions using the D0 1992-93 and 1994-95 data samples (104 pb$^{-1}$ are presented. We exclude at the 95% confidence level the production of…
View article: New approaches to determine $B^\pm$ and $B^0$ production fractions
New approaches to determine $B^\pm$ and $B^0$ production fractions Open
This proceeding summarises a flavour physics session talk presented at the Conference on High Energy Physics. The talk explored novel methods for precisely determining the decay rates of $\Upsilon(4S)$ into charged and neutral $B$ meson pa…
View article: High Luminosity LHC: Prospects for New Physics
High Luminosity LHC: Prospects for New Physics Open
International audience
View article: Novel approaches to determine $B^\pm$ and $B^0$ meson production fractions
Novel approaches to determine $B^\pm$ and $B^0$ meson production fractions Open
We propose novel methods to determine the $Υ(4S)\to B^+B^-$ and $Υ(4S)\to B^0\bar B^0$ decay rates. The precision to which they and their ratio are known yields at present a limiting uncertainty around $2\%$ in measurements of absolute $B$…
View article: Higgs Turns 10: the Childhood Story
Higgs Turns 10: the Childhood Story Open
In this talk, I give a historical and personal overview of the events that lead to the discovery of the Higgs boson by the ATLAS and CMS experiments in 2012, and highlight the childhood years of the Higgs boson studies at the Large Hadron …
View article: Displaying dark matter constraints from colliders with varying simplified model parameters
Displaying dark matter constraints from colliders with varying simplified model parameters Open
The search for dark matter is one of the main science drivers of the particle and astroparticle physics communities. Determining the nature of dark matter will require a broad approach, with a range of experiments pursuing different experi…
View article: The Future Circular Collider: a Summary for the US 2021 Snowmass Process
The Future Circular Collider: a Summary for the US 2021 Snowmass Process Open
In this white paper for the 2021 Snowmass process, we give a description of the proposed Future Circular Collider (FCC) project and its physics program. The paper summarizes and updates the discussion submitted to the European Strategy on …
View article: Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0
Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0 Open
A direct test of the Standard Model by searching for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings is presented. The authors analyze p{bar p} {yields} ll{gamma} + X, (l = e,{mu}) events at {radical}s = 1.8 TeV with the D0d detector at …
View article: The Future Circular Collider: a Summary for the US 2021 Snowmass Process
The Future Circular Collider: a Summary for the US 2021 Snowmass Process Open
In this white paper for the 2021 Snowmass process, we give a description of the proposed Future Circular Collider (FCC) project and its physics program. The paper summarizes and updates the discussion submitted to the European Strategy on …
View article: Heavy-Flavor Spectroscopy in ATLAS and CMS [PowerPoint]
Heavy-Flavor Spectroscopy in ATLAS and CMS [PowerPoint] Open
The slide presentation covers: B→K*μμ angular analysis and prospects, CP Violation in the Bs →J/ψϕ decay, Angular analysis of the B→J/ψΛp decay; Spectroscopy of excited Bs and Bc mesons, and Conclusions.
View article: LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
LHC Dark Matter Working Group: Next-generation spin-0 dark matter models Open
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy ($E_T^\mathrm{miss}$). The coherent use of these models sharpened the LHC DM search program…
View article: Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for heavy mediators of dark matter production in visible and invisible decay channels
Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for heavy mediators of dark matter production in visible and invisible decay channels Open
Weakly-coupled TeV-scale particles may mediate the interactions between normal matter and dark matter. If so, the LHC would produce dark matter through these mediators, leading to the familiar "mono-X" search signatures, but the mediators …
View article: Towards the next generation of simplified Dark Matter models
Towards the next generation of simplified Dark Matter models Open
This White Paper is an input to the ongoing discussion about the extension and refinement of simplified Dark Matter (DM) models. Based on two concrete examples, we show how existing simplified DM models (SDMM) can be extended to provide a …
View article: Recommendations on presenting LHC searches for missing transverse energy signals using simplified s-channel models of dark matter
Recommendations on presenting LHC searches for missing transverse energy signals using simplified s-channel models of dark matter Open
This document summarises the proposal of the LHC Dark Matter Working Group on how to present LHC results on s-channel simplified dark matter models and to compare them to direct (indirect) detection experiments.
View article: Recommendations on presenting LHC searches for missing transverse energy signals using simplified $s$-channel models of dark matter
Recommendations on presenting LHC searches for missing transverse energy signals using simplified $s$-channel models of dark matter Open
This document summarises the proposal of the LHC Dark Matter Working Group on how to present LHC results on $s$-channel simplified dark matter models and to compare them to direct (indirect) detection experiments.