Deutsches Elektronen-Synchrotron

Feb 8, 2024 | phys.org | Deutsches Elektronen-Synchrotron

What happens when radiation hits water? This is a question that has an impact every time you get an X-ray at the doctor's office, given you are mostly made of water. A team of theoretical physicists at DESY has worked on data taken by colleagues from Argonne National Laboratory in the US at the LCLS X-ray laser in California to get a better answer to this question.

Jan 30, 2024 | link.aps.org | Deutsches Elektronen-Synchrotron |Institut für Kernphysik |Technische Universität Darmstadt |Carnegie Mellon

A lattice QCD computation of the coupled channel πΣ–K¯N scattering amplitudes in the Λ(1405) region is detailed. Results are obtained using a single ensemble of gauge field configurations with Nf=2+1 dynamical quark flavors and mπ≈200  MeV and mK≈487  MeV. Hermitian correlation matrices using both single baryon and meson-baryon interpolating operators for a variety of different total momenta and irreducible representations are used.

Oct 5, 2023 | phys.org | Deutsches Elektronen-Synchrotron

Scientists using the H.E.S.S. observatory in Namibia have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about 10 trillion times the energy of visible light. This observation is hard to reconcile with the theory of the production of such pulsed gamma rays, as the international team reports in the journal Nature Astronomy.

Oct 3, 2023 | phys.org | Deutsches Elektronen-Synchrotron

Using a novel method, beams of laser light can be deflected using air alone. An invisible grating made only of air is not only immune to damage from the laser light, but it also preserves the original quality of the beam, reports an interdisciplinary research team in the journal Nature Photonics. The researchers have applied for a patent for their method.

Sep 30, 2023 | frontiersin.org | Deutsches Elektronen-Synchrotron

Oksana Chukova1, 2* Ludmyla Borkovska3 Larysa Khomenkova3, 4 Nadiia O.