Dielectric Laser Accelerators…

Topics: Applied Physics, Modern Physics, Particle Physics Physics Today 74, 8, 42 (2021); https://doi.org/10.1063/PT.3.4815 Particle accelerators are among the most important scientific tools of the modern age. Major accelerator facilities, such as the 27-km-circumference Large Hadron Collider in Switzerland, where the Higgs boson was recently discovered, allow scientists to uncover fundamental properties of matter and energy. ButContinue reading “Dielectric Laser Accelerators…”

Collider Neutrinos…

Topics: CERN, High Energy Physics, Particle Physics, Research Think “neutrino detector” and images of giant installations come to mind, necessary to compensate for the vanishingly small interaction probability of neutrinos with matter. The extreme luminosity of proton-proton collisions at the LHC, however, produces a large neutrino flux in the forward direction, with energies leading toContinue reading “Collider Neutrinos…”

FASER, Neutrinos, and Dark Matter…

Topics: CERN, Dark Matter, High Energy Physics, Neutrinos, Particle Physics Neutrinos are ubiquitous and notorious. Billions are passing through you at this moment. Occasionally described as a “ghost of a particle,” neutrinos are nearly massless, thereby making them extremely difficult to detect experimentally (“Neutrino,” meaning “little neutral one” in Italian, was first used by Enrico FermiContinue reading “FASER, Neutrinos, and Dark Matter…”

Muon g-2…

Topics: Modern Physics, Particle Physics, Quantum Mechanics Solving a mystery More than 200 scientists from around the world are collaborating with Fermilab on the Muon g-2 physics experiment which probes fundamental properties of matter and space. Muon g-2 (pronounced gee minus two) allows researchers to peer into the subatomic world to search for undiscovered particlesContinue reading “Muon g-2…”

Right-Handed Photons…

Topics: Modern Physics, Particle Physics, Quantum Mechanics, Quarks Note: A primer on quarks at Hyperphysics On 17 January 1957, a few months after Chien-Shiung Wu’s discovery of parity violation, Wolfgang Pauli wrote to Victor Weisskopf: “Ich glaube aber nicht, daß der Herrgott ein schwacher Linkshänder ist” (I cannot believe that God is a weak left-hander).Continue reading “Right-Handed Photons…”

Chirality…

Topics: Modern Physics, Particle Physics, Quantum Mechanics Our right and left hands are reflections of one another, but they are not equal. To hide one hand perfectly behind the other, we must face our palms in opposite directions. In physics, the concept of handedness (or chirality) works similarly: It is a property of objects thatContinue reading “Chirality…”

Neutrons Eye COVID…

Topics: COVID-19, High Energy Physics, Neutrons, Particle Physics Advanced neutron facilities such as the Institut Laue-Langevin are gearing up to enable a deeper understanding of the structural workings of SARS-CoV-2. The global scientific community has mobilized at an unprecedented rate in response to the COVID-19 pandemic, beyond just pharmaceutical and medical researchers. The world’s mostContinue reading “Neutrons Eye COVID…”