New constraints on ultraheavy dark matter from the LZ experiment

Searches for dark matter with liquid xenon time projection chamber experiments have traditionally focused on the region of the parameter space that is characteristic of weakly interacting massive particles, ranging from a few GeV/c2 to a few TeV/c2. Models of dark matter with a mass much heavier than this are well motivated by early production mechanisms different from the standard thermal freeze-out, but they have generally been less explored experimentally. In this work, we present a reanalysis of the first science run of the LZ experiment, with an exposure of 0.9  tonne×yr, to search for ultraheavy particle dark matter. The signal topology consists of multiple energy deposits in the active region of the detector forming a straight line, from which the velocity of the incoming particle can be reconstructed on an event-by-event basis. Zero events with this topology were observed after applying the data selection calibrated on a simulated sample of signal-like events. New experimental constraints are derived, which rule out previously unexplored regions of the dark matter parameter space of spin-independent interactions beyond a mass of 1017  GeV/c2. Published by the American Physical Society 2024 </jats:sec

Organic Medical And Pharmaceutical Chemistry

xiii;ill.;909hal.;30c

Map of the battle field of Gettysburg. [July 1st, 2nd, and 3rd 1863]

Scale 1:15,840.LC Civil War Maps (2nd ed.), 339From Jacobs, Michael. Notes on the rebel invasion of Maryland and Pennsylvania . . . Philadelphia, J. B. Lippincott, 1864.Indicates Union positions in red and Confederate positions in blue, Union artillery positions, roads, railroads, houses and names of residents, drainage, and vegetation.Description derived from published bibliography

New Samaria ; and, The summer of St. Martin /

Advertisement on p. [2] of preliminary p.Photographic frontispiece and plates facing p. 50, 84, 124 and 164 signed by Winfield S. Lukens.Verso of t.p.: Electrotyped and printed by J.B. Lippincott Company, Philadelphia, U.S.A.Verso of t.p.: Published September, 1904.BALMode of access: Internet

A blind lead : the story of a mine /

Wright, L.H. Amer. fiction, 1876-1900,Mode of access: Internet