Read article: Sterile neutrinos are a no-show (again) Astroparticle physics Research update Sterile neutrinos are a no-show (again) Hypothetical fourth neutrino flavour is absent from new data from Fermilab's NOvA experiment
Read article: Atomic anomaly explained without recourse to hypothetical ‘dark force’ Dark matter and energy Research update Atomic anomaly explained without recourse to hypothetical ‘dark force’ Effect observed in 2020 arises from changes in nuclear structure, not new physics
Read article: Ultrahigh-energy neutrino detection opens a new window on the universe Astroparticle physics Research update Ultrahigh-energy neutrino detection opens a new window on the universe Particle could have been created by a blazar or a cosmic collision
Read article: New class of quasiparticle appears in bilayer graphene Condensed matter Research update New class of quasiparticle appears in bilayer graphene "Fractional excitons" form in 2D carbon structure at high magnetic fields
Read article: String theory may be inevitable as a unified theory of physics, calculations suggest Mathematical physics Research update String theory may be inevitable as a unified theory of physics, calculations suggest Physicists explore particle scattering at tiny length scales
Read article: Positronium gas is laser-cooled to one degree above absolute zero Ultracold matter Research update Positronium gas is laser-cooled to one degree above absolute zero New cooling technique could help reveal physics beyond the Standard Model
Read article: Improved antiproton trap could shed more light on antimatter-matter asymmetry Particles and interactions Research update Improved antiproton trap could shed more light on antimatter-matter asymmetry Maxwell's demon cooling trap measures the magnetic moment of antiprotons with higher precision than ever before
Read article: Quark distribution in light–heavy mesons is mapped using innovative calculations Particles and interactions Research update Quark distribution in light–heavy mesons is mapped using innovative calculations Form factors can be tested by collider experiments
Read article: Multiple molecular hexaquarks are predicted by theoretical study Particles and interactions Research update Multiple molecular hexaquarks are predicted by theoretical study Exotic hadrons comprising six quarks could be observed in future experiments
Read article: X(3960) is a tetraquark, theoretical analysis suggests Particles and interactions Research update X(3960) is a tetraquark, theoretical analysis suggests Calculations reproduce particle’s mass and lifetime
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