820 research outputs found

    Search for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at SNOLAB

    Get PDF
    We present results of a dark matter search performed with a 0.6 kg day exposure of the DAMIC experiment at the SNOLAB underground laboratory. We measure the energy spectrum of ionization events in the bulk silicon of charge-coupled devices down to a signal of 60 eV electron equivalent. The data are consistent with radiogenic backgrounds, and constraints on the spin-independent WIMP-nucleon elastic-scattering cross section are accordingly placed. A region of parameter space relevant to the potential signal from the CDMS-II Si experiment is excluded using the same target for the first time. This result obtained with a limited exposure demonstrates the potential to explore the low-mass WIMP region (<10 GeV/c2c^{2}) of the upcoming DAMIC100, a 100 g detector currently being installed in SNOLAB.Comment: 11 pages, 11 figure

    Search for microwave emission from ultrahigh energy cosmic rays

    Full text link
    We present a search for microwave emission from air showers induced by ultrahigh energy cosmic rays with the microwave detection of air showers experiment. No events were found, ruling out a wide range of power flux and coherence of the putative emission, including those suggested by recent laboratory measurements.Comment: 5 pages, 3 figure

    Validação de marcadores moleculares associados à resistência parcial a Magnaporthe oryzae para aplicação em seleção assistida por marcadores (SAM).

    Get PDF
    O objetivo deste trabalho foi validar os seis marcadores na população de seleção recorrente CNA6, para posterior aplicação destes em SAM. Para tanto, foram coletadas folhas de 223 plantas da população para extração de DNA por lise alcalina
    corecore