3 papers
astro-ph.GA2026
OQ~208: A New Fe~II Changing-look Active Galactic Nucleus and Implications for the Nature of the Changing-look Phenomenon
J. Wang, W. K. Zheng, D. W. Xu +5
In addition to the traditional hydrogen Balmer emission lines, here we extend the optical changing-look (CL) phenomenon occurring in some active galactic nuclei (AGNs) to the optic…
hep-ex2026
Unexpected large relative strong phase and search for isospin breaking and asymmetries in $J/ψ\to K^*(892)\bar K
BESIII Collaboration, M. Ablikim, M. N. Achasov +766
Using a direct scan of 26 energy points near the resonance, we perform the first measurement of the relative phase between the strong and electromagnetic amplitud…
hep-ex2026
Updated measurement of the branching fraction of
BESIII Collaboration, M. Ablikim, M. N. Achasov +703
Using a dataset of 7.33 fb of annihilation data collected with the BESIII detector at center-of-mass energies from 4.128 to 4.226 GeV, we report an updated measure…