Modulations of the cosmic muon signal in ten years of Borexino data
- Creators
- Agostini, M.
- Altenmüller, K.
- Appel, S.
- Atroshchenko, V.
- Bagdasarian, Z.
- Basilico, D.
- Bellini, G.
- Benziger, J.
- Bick, D.
- Bolognino, I.
- Bonfini, G.
- Bravo, D.
- Caccianiga, B.
- Calaprice, F.
- Caminata, A.
- Caprioli, S.
- Carlini, M.
- Cavalcante, P.
- Cavanna, F.
- Chepurnov, A.
- Choi, K.
- Collica, L.
- D'Angelo, D.
- Davini, S.
- Derbin, A.
- Ding, X. F.
- Di Ludovico, A.
- Di Noto, L.
- Drachnev, I.
- Fomenko, K.
- Formozov, A.
- Franco, D.
- Gabriele, F.
- Galbiati, C.
- Gschwender, M.
- Ghiano, C.
- Giammarchi, M.
- Goretti, A.
- Gromov, M.
- Guffanti, D.
- Hagner, C.
- Houdy, T.
- Hungerford, E.
- Ianni, Aldo
- Ianni, Andrea
- Jany, A.
- Jeschke, D.
- Kobychev, V.
- Korablev, D.
- Korga, G.
- Kudryavtsev, V. A.
- Kumaran, S.
- Lachenmaier, T.
- Laubenstein, M.
- Litvinovich, E.
- Lombardi, F.
- Lombardi, P.
- Ludhova, L.
- Lukyanchenko, G.
- Lukyanchenko, L.
- Machulin, I.
- Manuzio, G.
- Marcocci, S.
- Maricic, J.
- Martyn, J.
- Meighen-Berger, S.
- Meroni, E.
- Meyer, M.
- Miramonti, L.
- Misiaszek, M.
- Muratova, V.
- Neumair, B.
- Nieslony, M.
- Oberauer, L.
- Opitz, B.
- Orekhov, V.
- Ortica, F.
- Pallavicini, M.
- Papp, L.
- Penek, Ö.
- Pietrofaccia, L.
- Pilipenko, N.
- Pocar, A.
- Porcelli, A.
- Raikov, G.
- Ranucci, G.
- Razeto, A.
- Re, A.
- Redchuk, M.
- Romani, A.
- Rossi, N.
- Rottenanger, S.
- Schönert, S.
- Semenov, D.
- Skorokhvatov, M.
- Smirnov, O.
- Sotnikov, A.
- Stokes, L. F. F.
- Suvorov, Y.
- Tartaglia, R.
- Testera, G.
- Thurn, J.
- Toropova, M.
- Unzhakov, E.
- Vishneva, A.
- Vogelaar, R. B.
- Von Feilitzsch, F.
- Weinz, S.
- Wojcik, M.
- Wurm, M.
- Yokley, Z.
- Zaimidoroga, O.
- Zavatarelli, S.
- Zuber, K.
- Zuzel, G.
- Others:
- Agostini, M.
- Altenmüller, K.
- Appel, S.
- Atroshchenko, V.
- Bagdasarian, Z.
- Basilico, D.
- Bellini, G.
- Benziger, J.
- Bick, D.
- Bolognino, I.
- Bonfini, G.
- Bravo, D.
- Caccianiga, B.
- Calaprice, F.
- Caminata, A.
- Caprioli, S.
- Carlini, M.
- Cavalcante, P.
- Cavanna, F.
- Chepurnov, A.
- Choi, K.
- Collica, L.
- D'Angelo, D.
- Davini, S.
- Derbin, A.
- Ding, X. F.
- Di Ludovico, A.
- Di Noto, L.
- Drachnev, I.
- Fomenko, K.
- Formozov, A.
- Franco, D.
- Gabriele, F.
- Galbiati, C.
- Gschwender, M.
- Ghiano, C.
- Giammarchi, M.
- Goretti, A.
- Gromov, M.
- Guffanti, D.
- Hagner, C.
- Houdy, T.
- Hungerford, E.
- Ianni, Aldo
- Ianni, Andrea
- Jany, A.
- Jeschke, D.
- Kobychev, V.
- Korablev, D.
- Korga, G.
- Kudryavtsev, V. A.
- Kumaran, S.
- Lachenmaier, T.
- Laubenstein, M.
- Litvinovich, E.
- Lombardi, F.
- Lombardi, P.
- Ludhova, L.
- Lukyanchenko, G.
- Lukyanchenko, L.
- Machulin, I.
- Manuzio, G.
- Marcocci, S.
- Maricic, J.
- Martyn, J.
- Meighen-Berger, S.
- Meroni, E.
- Meyer, M.
- Miramonti, L.
- Misiaszek, M.
- Muratova, V.
- Neumair, B.
- Nieslony, M.
- Oberauer, L.
- Opitz, B.
- Orekhov, V.
- Ortica, F.
- Pallavicini, M.
- Papp, L.
- Penek, Ö.
- Pietrofaccia, L.
- Pilipenko, N.
- Pocar, A.
- Porcelli, A.
- Raikov, G.
- Ranucci, G.
- Razeto, A.
- Re, A.
- Redchuk, M.
- Romani, A.
- Rossi, N.
- Rottenanger, S.
- Schönert, S.
- Semenov, D.
- Skorokhvatov, M.
- Smirnov, O.
- Sotnikov, A.
- Stokes, L. F. F.
- Suvorov, Y.
- Tartaglia, R.
- Testera, G.
- Thurn, J.
- Toropova, M.
- Unzhakov, E.
- Vishneva, A.
- Vogelaar, R. B.
- Von Feilitzsch, F.
- Weinz, S.
- Wojcik, M.
- Wurm, M.
- Yokley, Z.
- Zaimidoroga, O.
- Zavatarelli, S.
- Zuber, K.
- Zuzel, G.
Description
We have measured the flux of cosmic muons in the Laboratori Nazionali del Gran Sasso at 3800 m w.e. To be (3.432 ± 0.003)ċ 10 -4 m -2 s -1 based on ten years of Borexino data acquired between May 2007 and May 2017. A seasonal modulation with a period of (366.3 ± 0.6) d and a relative amplitude of (1.36 ±0.04)% is observed. The phase is measured to be (181.7 ± 0.4) d, corresponding to a maximum at the 1 st of July. Using data inferred from global atmospheric models, we show the muon flux to be positively correlated with the atmospheric temperature and measure the effective temperature coefficient α T = 0.90 ± 0.02. The origin of cosmic muons from pion and kaon decays in the atmosphere allows to interpret the effective temperature coefficient as an indirect measurement of the atmospheric kaon-to-pion production ratio r K /π = 0.11 +0.11-0.07 for primary energies above 18 TeV. We find evidence for a long-term modulation of the muon flux with a period of ∼ 3000 d and a maximum in June 2012 that is not present in the atmospheric temperature data. A possible correlation between this modulation and the solar activity is investigated. The cosmogenic neutron production rate is found to show a seasonal modulation in phase with the cosmic muon flux but with an increased amplitude of (2.6 ± 0.4)%.
Additional details
- URL
- http://hdl.handle.net/11567/941930
- URN
- urn:oai:iris.unige.it:11567/941930
- Origin repository
- UNIGE