S. Friedrich

activity

20042020

collaborators

Showing nucl-exShow all

4 papers · 1 filter

nucl-ex2020

Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of $^{7}$ Be in Superconducting Quantum Sensors

S. Friedrich, G. B. Kim, C. Bray +14

Sterile neutrinos are natural extensions to the standard model of particle physics and provide a possible portal to the dark sector. We report a new search for the existence of sub…

nucl-ex2020

Direct measurement of the $^{7}$ Be $L / K$ capture ratio in Ta-based superconducting tunnel junctions

S. Fretwell, K. G. Leach, C. Bray +8

We report a high-statistics measurement of the $L / K$ orbital electron capture (EC) ratio in $^{7}$ Be embedded in cryogenic Ta. The thin Ta film formed part of a high-resolution super…

nucl-ex2019

New data on $γ p \to η p$ with polarized photons and protons and their implications for $N^{*} \to N η$ decays

J. Müller, J. Hartmann, M. Grüner +86

The polarization observables $T, E, P, H$ , and $G$ in photoproduction of $η$ mesons off protons are measured for photon energies from threshold to $W = 2400$ MeV ( $T$ ), 2280 MeV ($E…

nucl-ex2017

Missing-mass spectroscopy of the $^{12} C (p, d)$ reaction near the $η^{'}$ -meson production threshold

Y. K. Tanaka, K. Itahashi, H. Fujioka +51

Excitation-energy spectra of $^{11}$ C nuclei near the $η^{'}$ -meson production threshold have been measured by missing-mass spectroscopy using the $^{12}$ C( $p$ , $d$ ) reaction. A…

Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of 7Be in Superconducting Quantum Sensors

Direct measurement of the 7Be L/K capture ratio in Ta-based superconducting tunnel junctions

New data on γ​p​→ηp with polarized photons and protons and their implications for N∗→Nη decays

Missing-mass spectroscopy of the 12C(p,d) reaction near the η′-meson production threshold

Limits on the Existence of sub-MeV Sterile Neutrinos from the Decay of $^{7}$ Be in Superconducting Quantum Sensors

Direct measurement of the $^{7}$ Be $L / K$ capture ratio in Ta-based superconducting tunnel junctions

New data on $γ p \to η p$ with polarized photons and protons and their implications for $N^{*} \to N η$ decays

Missing-mass spectroscopy of the $^{12} C (p, d)$ reaction near the $η^{'}$ -meson production threshold