European Organization for Nuclear Research

output

19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing hep-phShow all

5,511 papers · 1 filter

hep-ph2026

Particle Cosmology

Venus Keus

Particle cosmology is the branch of science that seeks to understand the birth and evolution of the Universe by applying the principles of particle physics. It brings together the…

hep-ph2026

Application of Deep Learning to Jet Charge Discrimination

Meisam Ghasemi Bostanabad, Mojtaba Mohammadi Najafabadi

The Large Hadron Collider (LHC) produces an enormous volume of data in which the identification and characterization of hadronic jets is a central challenge. Determining the electr…

hep-ph2026

Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence

João Barata, Meijian Li, Wenyang Qian +2

Hard scattering events in high-energy collisions produce highly virtual partons that subsequently fragment into collimated hadronic cascades. When such partonic showers evolve in a…

hep-ph2026

W-boson helicity fractions in top decay as probes of dimension-6 and dimension-8 SMEFT operators

Afsaneh Kianfar, Gholamhossein Haghighat, Mojtaba Mohammadi Najafabadi

Precision measurements of top-quark decays provide powerful probes of physics beyond the Standard Model (SM). While the impact of dimension-6 operators in the SM Effective Field Th…

hep-ph2026

Blocking Mesogenesis

Chaja Baruch, Gilly Elor, Jared M. Goldberg +2

Mechanisms of Mesogenesis generate the baryon asymmetry and dark matter of the Universe through late-time decays of Standard Model mesons into baryons and dark matter states. Utili…

hep-ph2026

Next-to-next-to-leading order event generation for $t t ˉ H$ production with approximate two-loop amplitude

Christian Biello, Chiara Savoini, Chiara Signorile-Signorile +1

We study Higgs-boson production in association with a top-quark pair ( $t t ˉ H$ ) at hadron colliders and present the first matching of next-to-next-to-leading order (NNLO) QCD co…

hep-ph2026

Electroweak Higgs boson pair production: Updated inclusive cross sections

Ramona Gröber, Alexander Karlberg, Mathieu Pellen +2

We present updated inclusive cross sections for electroweak Higgs boson pair production for energies of relevance to the LHC and High-Luminosity phase of the LHC. The cross section…

hep-ph2026

New results on small-x resummation for splitting functions

Marco Bonvini, Stefano Frixione, Giovanni Stagnitto

We revisit the basic steps necessary to obtain next-to-leading-logarithmic accurate small- $x$ results for the DGLAP splitting functions, and their implementations within the HELL f…

hep-ph2026★ 1 cited

Precise QCD Predictions for Hadron-in-jet Production in $e^{+} e^{-}$ Collisions

Leonardo Bonino, Aude Gehrmann-De Ridder, Thomas Gehrmann +3

The production of identified hadrons inside jets in $e^{+} e^{-}$ annihilation allows for detailed studies of parton-to-hadron fragmentation functions in a clean environment. We comput…

hep-ph2026

The Simplest B Decay, Precisely

Claudia Cornella, Max Ferré, Matthias König +1

We derive the QCD $\times$ QED factorization theorem governing the leptonic decay $B^{-} \to μ^{-} ν ˉ_{μ} (γ)$ at all orders in $α_{s}$ and $α$ . Electromagnetic corrections to this decay prob…

hep-ph2026

Dark Matter emission at Belle II and NA62 in Minimal Flavor Violation framework

Federico Mescia, Shohei Okawa, Joel Swallow +1

Minimal Flavor Violation (MFV) provides a compelling framework for exploring physics beyond the Standard Model, in which new QCD-singlet fields transforming under the global $\math…

hep-ph2025★ 1 cited

Amplitude Surrogates for Multi-Jet Processes

Luca Beccatini, Fabio Maltoni, Olivier Mattelaer +1

Accurate and efficient amplitude predictions are essential for precision studies of multi-jet processes at the LHC. We introduce a novel neural network architecture that predicts m…

hep-ph2025

Probing invisible particles with charm

Gudrun Hiller, Dominik Suelmann

We point out opportunities to probe invisible particles, left- and right-handed neutrinos, axion-like particles (ALPs) and dark photons $(Z^{'})$ with rare decays of charm hadro…

hep-ph2025

Event shapes and Inclusive Hadron Spectra at FCC-ee energies

Philip Mathew, Ritu Aggarwal, Manjit Kaur

We analyze hadronic final states of $e^{+} e^{-}$ annihilation through event shape observables, Thrust and C-parameter, and inclusive hadron spectra at the planned center-of-mass (c.m.)…

hep-ph2025★ 3 cited

Jet quenching in out-of-equilibrium QCD matter

João Barata, Kirill Boguslavski, Florian Lindenbauer +1

We present the first study of jet substructure modifications during the bottom-up evolution that describes the early stages of heavy-ion collisions. To this end, we study the brems…

hep-ph2025

Transverse-momentum resummation at mixed QCD $\otimes$ QED NNLL accuracy for Z boson production at hadron colliders

Andrea Autieri, Stefano Camarda, Leandro Cieri +2

We consider the transverse momentum ( $q_{T}$ ) distribution of neutral charged bosons at hadron colliders. We perform the resummation of the logarithmically-enhanced effects due to si…

hep-ph2025★ 1 cited

Nucleosynthesis and CMB bounds on photophilic ALPs: a fresh look

Miguel Escudero, Clara Garcia-Perez, Maksym Ovchynnikov

We provide a fresh look at the cosmological constraints on axion-like particles (ALPs) that couple predominantly to photons, focusing on lifetimes $τ_{a} ≲ 1 0^{4} s$ …

hep-ph2025★ 2 cited

Running Couplings in High-Temperature Effective Field Theory

Mikael Chala, Andrii Dashko, Guilherme Guedes

In this work, we study the renormalization-group evolution of parameters in the three-dimensional effective field theory (3D EFT) that describes the thermally driven electroweak ph…

hep-ph2025★ 2 cited

Sub-GeV dark matter and multi-decay signatures from dark showers at beam-dump experiments

Elias Bernreuther, Nicoline Hemme, Felix Kahlhoefer +2

In models of strongly-interacting dark sectors, the production of dark quarks at accelerators can give rise to dark showers with multiple dark mesons in the final state. If some of…

hep-ph2025★ 1 cited

Modelling $b b ˉ H$ production for the LHC at 13.6 TeV

Christian Biello, Alessandro Gavardi, Rebecca von Kuk +10

We present new state-of-the-art predictions for Standard Model Higgs boson production in association with a bottom-quark pair ( $b b ˉ H$ ). Updated cross sections are computed in a…

hep-ph2025★ 5 cited

Automated computation of spin-density matrices and quantum observables for collider physics

Valentin Durupt, Fabio Maltoni, Olivier Mattelaer

We present a fully automated framework to compute production spin-density matrices for generic collider processes at tree level within \textsc{MadGraph5\_aMC@NLO}. The method assem…

hep-ph2025

Flavor hierarchies with nonminimal irreducible representations

Hannah Banks, Graeme Crawford, Matthew McCullough +1

We propose a new class of flavour models in which the spurion which breaks Standard Model flavour symmetries transforms in a non-minimal representation. Hierarchies in fermion mass…

hep-ph2025

Probing the Chern-Simons Portal at the HL-LHC through Displaced Vertices from W Boson Associated Production

Mohammad Nourbakhsh, Mojtaba Mohammadi Najafabadi

This study explores the Chern-Simons portal model, an extension of the Standard Model that introduces a massive neutral vector boson $X$ associated with a $U_{X} (1)$ gauge symmetry.…

hep-ph2025

An EFT study of the $pp \to t ˉ tZ (l l) h (bb)$ process at the FCC- $hh$

Shankha Banerjee, Rick S. Gupta, Shilpi Jain +2

We carry out an Effective Field Theory (EFT) study of the $pp \to t ˉ tZ h$ process in the $4b + 3 \ell + \ge 2j + \slashed{E}_T$ final state. This process can uniquely probe t…

Particle Cosmology

Application of Deep Learning to Jet Charge Discrimination

Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence

W-boson helicity fractions in top decay as probes of dimension-6 and dimension-8 SMEFT operators

Blocking Mesogenesis

Next-to-next-to-leading order event generation for ttˉH production with approximate two-loop amplitude

Electroweak Higgs boson pair production: Updated inclusive cross sections

New results on small-x resummation for splitting functions

Precise QCD Predictions for Hadron-in-jet Production in e+e− Collisions

The Simplest B Decay, Precisely

Dark Matter emission at Belle II and NA62 in Minimal Flavor Violation framework

Amplitude Surrogates for Multi-Jet Processes

Probing invisible particles with charm

Event shapes and Inclusive Hadron Spectra at FCC-ee energies

Jet quenching in out-of-equilibrium QCD matter

Transverse-momentum resummation at mixed QCD⊗QED NNLL accuracy for Z boson production at hadron colliders

Nucleosynthesis and CMB bounds on photophilic ALPs: a fresh look

Running Couplings in High-Temperature Effective Field Theory

Sub-GeV dark matter and multi-decay signatures from dark showers at beam-dump experiments

Modelling bbˉH production for the LHC at 13.6 TeV

Automated computation of spin-density matrices and quantum observables for collider physics

Flavor hierarchies with nonminimal irreducible representations

Probing the Chern-Simons Portal at the HL-LHC through Displaced Vertices from W Boson Associated Production

An EFT study of the pp→tˉtZ(ll)h(bb) process at the FCC-hh

Next-to-next-to-leading order event generation for $t t ˉ H$ production with approximate two-loop amplitude

Precise QCD Predictions for Hadron-in-jet Production in $e^{+} e^{-}$ Collisions

Transverse-momentum resummation at mixed QCD $\otimes$ QED NNLL accuracy for Z boson production at hadron colliders

Modelling $b b ˉ H$ production for the LHC at 13.6 TeV

An EFT study of the $pp \to t ˉ tZ (l l) h (bb)$ process at the FCC- $hh$