Measurement of CP Violation Observables in D^{+}→K^{-}K^{+}π^{+} Decays.

A search for violation of the charge-parity (CP) symmetry in the D^{+}→K^{-}K^{+}π^{+} decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4  fb^{-1}, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D^{+} and D^{-} phase-space distributions, with instrumental asymmetries subtracted using the D_{s}^{+}→K^{-}K^{+}π^{+} decay as a control channel.

Annual Trends Among the Unsheltered in Three Los Angeles Neighborhoods: The Los Angeles Longitudinal Enumeration and Demographic Survey (LA LEADS) 2023 Annual Report.

Since fall 2021, the authors of this study have conducted regular enumerations of the unsheltered populations in three Los Angeles neighborhoods known for having high concentrations of people experiencing unsheltered homelessness: Hollywood, Skid Row, and Venice. In addition to counts, the authors have conducted surveys of unsheltered residents in these same neighborhoods to better understand the characteristics, experiences, and needs of these populations. The results of the first year of this study, known as the Los Angeles Longitudinal Enumeration and Demographic Survey (LA LEADS), were presented in a report published by RAND in 2023.

Lifetime depression, sleep disruption and brain structure in the UK Biobank cohort.

Whether depression and poor sleep interact or have statistically independent associations with brain structure and its change over time is not known. Within a subset of UK Biobank participants with neuroimaging and subjective and/or objective sleep data (n = 28,351), we examined associations between lifetime depression and sleep disruption and their interaction with structural neuroimaging measures, both cross-sectionally and longitudinally. Sleep variables were: self-reported insomnia and difficulty getting up; actigraphy-derived short sleep (<7 h); sustained inactivity bouts during daytime (SIBD); and sleep efficiency.