The high-energy frontier
Collider phenomenology and effective field theory to probe new physics at machines like the Future Circular Collider, from composite-Higgs models to the Goldstone symmetries and positivity bounds that govern them.
I'm a theoretical physicist working on physics beyond the Standard Model. My work runs from future colliders to the QCD axion and the nature of dark matter.
I'm a theoretical physicist and Research Fellow in the Theory Department at CERN. I work on physics beyond the Standard Model: building the physics case for future colliders, mapping the multi-axion landscape, and connecting particle-physics models of dark matter to what experiments actually measure. Before CERN I held research positions in Madrid, and I did my doctorate jointly between Granada and Minho, which went on to win three best-thesis prizes.
Spanish Royal Physics Society (Theory Division), University of Granada and University of Minho.
Early-career representative of the CERN theory group on the European Committee for Future Accelerators.
Swiss representative on the Management Committee of the EU COST Action on weakly-interacting particles.
I work across three complementary fronts, from the highest collider energies to the faintest astrophysical signals, all aimed at redefining the most motivated targets for the next discovery in particle physics.
Collider phenomenology and effective field theory to probe new physics at machines like the Future Circular Collider, from composite-Higgs models to the Goldstone symmetries and positivity bounds that govern them.
Phenomenology of the QCD axion in realistic multi-axion ("axiverse") scenarios, where mass mixing and cosmological level-crossings reshape the signal regions experiments are built to hunt.
A rigorous map between particle-physics models and astrophysical data, including a first-principles framework for self-interacting dark matter in the cosmological simulations used to test it.
I finished my BSc in Physics at the University of Porto, and got my first taste of research at CAUP, on dark-energy models and their observational imprints.
I did my MSc in Theoretical Physics at Porto (19/20), on CPT, modified gravity and the baryon asymmetry of the Universe.
I did my PhD as a co-tutelle between the Universities of Granada and Minho, on the interplay between collider and astrophysical probes of composite-Higgs models.
I defended my thesis Cum Laude, and it went on to win three best-thesis prizes from the Spanish Royal Physics Society, Granada and Minho.
I joined the Marie Skłodowska-Curie network HIDDeN as an Early-Stage Researcher at the Universidad Autónoma de Madrid, with a research stay at the University of California, San Diego.
I was a guest on the Quantum Fracture podcast, talking about the Higgs, the Standard Model and axions. It's been watched over 280,000 times.
I moved to the Instituto de Física Teórica (IFT) in Madrid as a postdoctoral researcher.
I became a Research Fellow in the Theory Department at CERN, and the theory group's early-career representative on the European Committee for Future Accelerators (ECFA).
I gave seminars and plenaries at ETH Zürich, the 8th FCC Physics Workshop and the Pollica workshop on the strong CP problem, and co-organised the Invisibles Workshop at CERN.
Plenary talks at Planck 2026 and the Blois Workshop, and I'm co-organising the MITP institute "ALPs Across Scales". 18 publications and 660+ citations so far.
I've published 18 papers and 2 white papers, with 660+ citations on INSPIRE-HEP. Each title links straight to its PDF on arXiv.
I've given 19 invited seminars and 18 conference talks across Europe and the US, including plenaries at Planck, the Blois Workshop and the FCC Physics Workshop, and seminars at ETH Zürich and Berkeley. Here's a selection by year.
Plenary · Planck 2026 · Plenary · Blois Workshop · CERN-TH Cosmo Seminar · CEPC International Workshop
Seminar · ETH Zürich · IST Lisbon Colloquium · Plenary · Pollica “The strong CP problem” · Plenary · “Dark Matter Beyond the Weak Scale III” (UK) · Plenary · 8th FCC Physics Workshop (CERN) · Review · LII Meeting on Fundamental Physics
CERN BSM Forum · Mainz Theorie Palaver · Heidelberg Teilchen-Tee · Plenary · PASCOS (Rencontres du Vietnam) · Seminar · Oskar Klein Centre · Plenary · COSMIC WISPers (DESY)
Seminar · Berkeley Center for Theoretical Physics · UC Santa Cruz · UC San Diego · Plenary · LAPTh “Axions++” · DESY · INFN Padova · Plenary · Patras
Plenary · CERN “Implications of LHCb measurements” · IJCLab Orsay · Plenary · IGFAE “Multimuon signatures” · Plenary · Invisibles Workshop · Plenary · CPAN · MITP “Flavor at the Crossroads”
“Higgs Hunting” Workshop · Seminar · IFT Madrid · Seminar · IGFAE Santiago · Plenary · LIO “Composite connection of Higgs, dark matter and neutrinos”
Plenary · “Stealth physics at LHCb” · Seminars at U. Granada, U. Aveiro & IPPP Durham · Plenary · MITP “Dark Matter Identification” · “Higgs and Flavour Physics” (Lisbon)
I co-organise the CERN Theory Journal Club and international workshops like MITP “ALPs Across Scales”, Invisibles and HEFT, and I referee for Physics Letters B, EPJ C and JHEP.
I love bringing particle physics to wider audiences. My episode on the Quantum Fracture podcast, about the Higgs, the Standard Model and axions, has been watched over 280,000 times. I've also run CERN Masterclasses for high-school students in Portugal and the UK, given public lectures at European Researchers’ Night and CAUP, and co-authored a 2026 GenHET interview on diversity and mentorship in physics.
I'm always happy to hear about collaborations, seminar invitations and science communication. The fastest way to reach me is email.
maria.ramos@cern.chCERN · Theory Department · Geneva, Switzerland