DE KERRET, H.; ABRAHÃO, T.; ALMAZAN, H.; DOS ANJOS, J.C.; APPEL, S.; BARRIERE, J.C.; BEKMAN, I.; BEZERRA, T.J.C.; BEZRUKOV, L.; BLUCHER, E.; BRUGIÈRE, T.; BUCK, C.; BUSENITZ, J.; CABRERA, A.; CERRADA, M.; CHAUVEAU, E.; CHIMENTI, P.; CORPACE, O.; DAWSON, J.V.; DJURCIC, Z.; ETENKO, A.; FRANCO, D.; FURUTA, H.; GIL-BOTELLA, I.; GIVAUDAN, A.; GOMEZ, H.; GONZALEZ, L.F.G.; GOODMAN, M.C.; HARA, T.; HASER, J.; HELLWIG, D.; HOURLIER, A.; ISHITSUKA, M.; JOCHUM, J.; JOLLET, C.; KALE, K.; KANEDA, M.; KARAKAC, M.; KAWASAKI, T.; KEMP, E.; KRYN, D.; KUZE, M.; LACHENMAIER, T.; LANE, C.E.; LASSERRE, T.; LASTORIA, C.; LHUILLIER, D.; LIMA, H.P.; LINDNER, M.; LÓPEZ-CASTAÑO, J.M.; LOSECCO, J.M.; LUBSANDORZHIEV, B.; MAEDA, J.; MARIANI, C.; MARICIC, J.; MARTINO, J.; MATSUBARA, T.; MENTION, G.; MEREGAGLIA, A.; MILETIC, T.; MILINCIC, R.; NAVAS-NICOLÁS, D.; NOVELLA, P.; NUNOKAWA, H.; OBERAUER, L.; OBOLENSKY, M.; ONILLON, A.; ORALBAEV, A.; PALOMARES, C.; PEPE, I.M.; PRONOST, G.; REICHENBACHER, J.; REINHOLD, B.; SETTIMO, M.; SCHÖNERT, S.; SCHOPPMANN, S.; SCOLA, L.; SHARANKOVA, R.; SIBILLE, V.; SINEV, V.; SKOROKHVATOV, M.; SOLDIN, P.; STAHL, A.; STANCU, I.; STOKES, L.F.F.; SUEKANE, F.; SUKHOTIN, S.; SUMIYOSHI, T.; SUN, Y.; TONAZZO, A.; VEYSSIERE, C.; VIAUD, B.; VIVIER, M.; WAGNER, S.; WIEBUSCH, C.; WURM, M.; YANG, G.; YERMIA, F.

doi:10.1007/JHEP11(2018)053

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DE KERRET, H.
AstroParticule et Cosmologie [APC (UMR_7164)]

ABRAHÃO, T.

ALMAZAN, H.

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Journal of High Energy Physics. 2018, vol. 11, p. 053

Springer

Résumé en anglais

The yields and production rates of the radioisotopes$^{9}$Li and$^{8}$He created by cosmic muon spallation on$^{12}$C, have been measured by the two detectors of the Double Chooz experiment. The identical detectors are located at separate sites and depths, which means that they are subject to different muon spectra. The near (far) detector has an overburden of ∼120 m.w.e. (∼300 m.w.e.) corresponding to a mean muon energy of 32.1 ± 2.0 GeV (63.7 ± 5.5 GeV). Comparing the data to a detailed simulation of the$^{9}$Li and$^{8}$He decays, the contribution of the$^{8}$He radioisotope at both detectors is found to be compatible with zero. The observed$^{9}$Li yields in the near and far detectors are 5.51 ± 0.51 and 7.90 ± 0.51, respectively, in units of 10$^{−8}$μ$^{−1}$g$^{−1}$cm$^{2}$. The shallow overburdens of the near and far detectors give a unique insight when combined with measurements by KamLAND and Borexino to give the first multi-experiment, data driven relationship between the$^{9}$Li yield and the mean muon energy according to the power law $ Y = {Y}_0{\left(\left\langle {E}_{\mu}\right\rangle /1\ GeV\right)}^{\overline{\alpha}} $ , giving $ \overline{\alpha} = 0.72 \pm 0.06 $ and Y$_{0}$ = (0.43 ± 0.11) × 10$^{−8}$μ$^{−1}$g$^{−1}$cm$^{2}$. This relationship gives future liquid scintillator based experiments the ability to predict their cosmogenic$^{9}$Li background rates.< Réduire

Mots clés en anglais

Neutrino Detectors and Telescopes (experiments)

muon nucleus: nuclear reaction

scintillation counter: liquid

muon: cosmic radiation

muon: energy

neutrino: detector

far detector

near detector

Double Chooz

nuclear reactor

background

Borexino

KamLAND

nuclide: yield

fission

numerical calculations: Monte Carlo

experimental results

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Yields and production rates of cosmogenic $^9$Li and $^8$He measured with the Double Chooz near and far detectors

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