English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In-situ production of long-lived isotopes by cosmic muon interactions maygenerate a non-negligible background for deep underground rare event searches.Previous Monte Carlo studies for the GERDA experiment at LNGS identified thedelayed decays of $^{77}$Ge and its metastable state $^{77m}$Ge as dominantcosmogenic background in the search for neutrinoless double beta decay of$^{76}$Ge. This might limit the sensitivity of next generation experimentsaiming for increased $^{76}$Ge mass at background-free conditions and therebydefine a minimum depth requirement. A re-evaluation of the $^{77(m)}$Gebackground for the GERDA experiment has been carried out by a set of MonteCarlo simulations. The obtained $^{77(m)}$Ge production rate is (0.21$\pm$0.01)nuclei/(kg$\cdot$yr). After application of state-of-the-art active backgroundsuppression techniques and simple delayed coincidence cuts this corresponds toa background contribution of (2.7$\pm$0.3)$\cdot10^{-6}$cts/(keV$\cdot$kg$\cdot$yr). The suppression achieved by this strategy equalsan effective muon flux reduction of more than one order of magnitude. Thisvirtual depth increase opens the way for next generation rare event searches.

Virtual depth by active background suppression: Revisiting the cosmic muon induced background of GERDA Phase II