ABSTRACT
We present first results from a dark photon dark matter search in the mass range from 44 to 52 µeV (10.7-12.5 GHz) using a room-temperature dish antenna setup called GigaBREAD. Dark photon dark matter converts to ordinary photons on a cylindrical metallic emission surface with area 0.5 m^{2} and is focused by a novel parabolic reflector onto a horn antenna. Signals are read out with a low-noise receiver system. A first data taking run with 24 days of data does not show evidence for dark photon dark matter in this mass range, excluding dark photon photon mixing parameters χâ³10^{-12} in this range at 90% confidence level. This surpasses existing constraints by about 2 orders of magnitude and is the most stringent bound on dark photons in this range below 49 µeV.
ABSTRACT
Juvenile-onset recurrent respiratory papillomatosis (JORRP) is a rare disease associated with the human papilloma virus (HPV) in which papillomas form along the aerodigestive tract in children. Pulmonary involvement is uncommon, but associated with worse clinical outcomes, including the rare complication of malignant transformation. We present a patient with JORRP in which lung disease underwent malignant transformation during adolescence. Our goal is to raise awareness of the potential for malignant transformation in children, as well as to familiarize pediatric radiologists with imaging features of malignant lung disease in JORRP. We advocate for the identification of the subgroup of JORPP patients with pulmonary disease who, due to increased risk for malignant transformation, may benefit from closer clinical and imaging surveillance by a multidisciplinary team.
