Physics News

"Search for the rare decay !" → $%&&̅ at J-PARC KOTO experiment", Presentation at KAON2019 conference by Satoshi Shinohara. 4 events are seen for K_L --> Pi0+nu,nubar channel. BSM ? Need to be checked more.

"Annual modulations from secular variations: relaxing DAMA?", arXiv:2002.00459, speculation that DAMA annual modulation may be due to the way analyzing the background data. Maybe not from DM signal. Interesting !

"Early-type Host Galaxies of Type Ia Supernovae. II. Evidence for Luminosity Evolution in Supernova Cosmology", arXiv:1912.04903, A team of Yonsei U. led by Young-Wook Lee claims that dark energy is not real ! But the data are questioned.

"Strongly baryon-dominated disk galaxies at the peak of galaxy formation ten billion years ago", R. Genzel et al., Nature 543, 397 (2019), Dark Matter in early Universe shows different rotation curve !

"New evidence supporting the existence of the hypothetic X17 particle", arXiv:1910.10459, A new ATOMKI experiment with he-4 supporting 17MeV dark photon !

"Light Dark Matter Search with Ionization Signals in XENON1T", PRL123, 251801 (2019), 22 ton day data. New limits to DM-nucleus scattering for 3–6 GeV , DM-electron scattering for > 30 MeV, and dark photons and axionlike particles for 0.186–1 keV.

“Search for dark matter induced de-excitation of 180-Ta”, Dark matter interpretation of Ta-180 data

Axionic charge-density wave in the Weyl semimetal (TaSe4)2I. Composite Axion detected !, Nature (2019)

CUPID pre-CDR. arXiv:1907.09376 (2019)