Publications by Emmanuel Stamou

Electric dipole moment constraints on CP-violating heavy-quark Yukawas at next-to-leading order

Electric dipole moments are sensitive probes of new phases in the Higgs Yukawa couplings. We calculate the complete two-loop QCD anomalous dimension matrix for the mixing of CP-odd scalar and tensor operators and apply our results for a phenomenological st ...

Springer Nature2021

Self-interacting neutrinos: Solution to Hubble tension versus experimental constraints

Emmanuel Stamou

Exotic self-interactions among the Standard Model neutrinos have been proposed as a potential reason behind the tension in the expansion rate, H-0, of the universe inferred from different observations. We constrain this proposal using electroweak precision ...

American Physical Society2021

Flavoured axions in the tail of B-q -> mu(+)mu(-) and B -> gamma* form factors

Emmanuel Stamou

We discuss how LHC di-muon data collected to study B-q -> mu mu can be used to constrain light particles with flavour-violating couplings to b-quarks. Focussing on the case of a flavoured QCD axion, a, we compute the decay rates for B-q -> mu mu a and the ...

Springer Nature2021

Standard-Model Prediction of epsilon(K) with Manifest Quark-Mixing Unitarity

Emmanuel Stamou

The parameter epsilon(K) describes CP violation in the neutral kaon system and is one of the most sensitive probes of new physics. The large uncertainties related to the charm-quark contribution to epsilon(K) have so far prevented a reliable standard-model ...

AMER PHYSICAL SOC2020