Browsing by Author "Meyer, M."

Now showing 1 - 6 of 6
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    Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II
    Agarwalla, S. K.; Agostini, Matteo; Altenmueller, Konrad; Appel, S.; Atroshchenko, Victor; Bagdasarian, Zara; Basilico, D.; Bellini, G.; Benziger, Jay; Bick, D.; Bonfini, G.; Bravo, D.; Caccianiga, B.; Calaprice, F.; Caminata, A.; Cappelli, L.; Cavalcante, P.; Cavanna, F.; Chepurnov, A.; Choi, K.; D'Angelo, D.; Davini, S.; Derbin, A. V.; Di Giacinto, A.; Di Marcello, V.; Ding, X. F.; Di Ludovico, Antonio; Di Noto, Lea; Drachnev, I.; Fomenko, K.; Formozov, A.; Franco, D.; Gabriele, Federico; Galbiati, C.; Gschwender, M.; Ghiano, C.; Giammarchi, Marco; Goretti, A.; Gromov, M.; Guffanti, D.; Hagner, C.; Hungerford, Ed V.; Ianni, Aldo; Ianni, Andrea; Jany, A.; Jeschke, D.; Kumaran, S.; Kobychev, V.; Korga, G.; Lachenmaier, Tobias; Laubenstein, Matthias; Litvinovich, E.; Lombardi, Paolo; Ludhova, L.; Lukyanchenko, G.; Lukyanchenko, L.; Machulin, I. N.; Manuzio; Marcocci, S.; Maricic, Jelena; Martyn, J.; Meroni, E.; Meyer, M.; Miramonti, L.; Misiaszek, M.; Muratova, V. N.; Neumair, B.; Nieslony, M.; Oberauer, L.; Orekhov, V.; Ortica, F.; Pallavicini, M.; Papp, L.; Penek, O.; Pietrofaccia, L.; Pilipenko, N.; Pocar, A.; Raikov, G.; Ranucci, G.; Razeto, A.; Re, A.; Redchuk, M.; Romani, A.; Rossi, Nicola; Rottenanger, Sebastian; Schoenert, S.; Semenov, D. A.; Skorokhvatov, Mikhail D.; Smirnov, O. Y.; Sotnikov, A.; Sun, C.; Suvorov, Yura; Takeuchi, Tatsu; Tartaglia, R.; Testera, G.; Thurn, J.; Unzhakov, E. V.; Vishneva, A.; Vogelaar, R. Bruce; von Feilitzsch, F.; Wojcik, M. M.; Wurm, M.; Zaimidoroga, O.; Zavatarelli, S.; Zuber, Kai; Zuzel, G. (2020-02-05)
    The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-nu(e) survival probability P-ee(E), and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI's) which modify the chiral couplings and P-ee(E). In this paper, we search for such NSI's, in particular, flavor-diagonal neutral current interactions that modify the nu(e)e and nu(tau)e couplings using Borexino Phase II data. Standard Solar Model predictions of the solar neutrino fluxes for both high- and low-metallicity assumptions are considered. No indication of new physics is found at the level of sensitivity of the detector and constraints on the parameters of the NSI's are placed. In addition, with the same dataset the value of sin(2)theta(W) is obtained with a precision comparable to that achieved in reactor antineutrino experiments .
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    Direct measurement of backgrounds using reactor-off data in Double Chooz
    Abe, Y.; Aberle, C.; dos Anjos, J. C.; Barriere, J. C.; Bergevin, M.; Bernstein, A.; Bezerra, T. J. C.; Bezrukhov, Leonid B.; Blucher, E.; Bowden, N. S.; Buck, C.; Busenitz, J.; Cabrera, A.; Caden, E.; Camilleri, Leslie; Carr, Rachel E.; Cerrada, M.; Chang, P. J.; Chimenti, P.; Classen, T.; Collin, A. P.; Conover, E.; Conrad, Janet M.; Crespo-Anadon, J. I.; Crum, K.; Cucoanes, A. S.; D'Agostino, M. V.; Damon, E.; Dawson, J. V.; Dazeley, S.; Dietrich, D.; Djurcic, Zelimir; Dracos, M.; Durand, V.; Ebert, J.; Efremenko, Y.; Elnimr, M.; Erickson, A.; Etenko, A.; Fallot, M.; Fechner, M.; von Feilitzsch, F.; Felde, J.; Fernandes, S. M.; Fischer, V.; Franco, D.; Franke, A. J.; Franke, M.; Furuta, H.; Gama, R.; Gil-Botella, I.; Giot, L.; Goger-Neff, M.; Gonzalez, L. F. G.; Goodenough, L.; Goodman, M. C.; Goon, J. T. M.; Greiner, D.; Haag, N.; Habib, S.; Hagner, C.; Hara, T.; Hartmann, F. X.; Haser, J.; Hatzikoutelis, A.; Hayakawa, T.; Hofmann, M.; Horton-Smith, Glenn A.; Hourlier, A.; Ishitsuka, M.; Jochum, J.; Jollet, C.; Jones, C. L.; Kaether, F.; Kalousis, L. N.; Kamyshkov, Y.; Kaplan, D. M.; Kawasaki, T.; Keefer, G.; Kemp, E.; de Kerret, H.; Kibe, Y.; Konno, T.; Kryn, D.; Kuze, M.; Lachenmaier, Tobias; Lane, C. E.; Langbrandtner, C.; Lasserre, T.; Letourneau, A.; Lhuillier, D.; Lima, H. P.; Lindner, M.; Lopez-Castano, J. M.; LoSecco, J. M.; Lubsandorzhiev, B. K.; Lucht, S.; McKee, D.; Maeda, J.; Maesano, C. N.; Mariani, Camillo; Maricic, Jelena; Martino, J.; Matsubara, T.; Mention, G.; Meregaglia, A.; Meyer, M.; Miletic, T.; Milincic, R.; Miyata, H.; Mueller, T. A.; Nagasaka, Y.; Nakajima, K.; Novella, P.; Obolensky, M.; Oberauer, L.; Onillon, A.; Osborn, A.; Ostrovskiy, I.; Palomares, C.; Pepe, I. M.; Perasso, S.; Perrin, P.; Pfahler, P.; Porta, A.; Potzel, W.; Pronost, G.; Reichenbacher, J.; Reinhold, B.; Remoto, A.; Roehling, M.; Roncin, R.; Roth, S.; Rybolt, B.; Sakamoto, Y.; Santorelli, R.; Sato, F.; Schoenert, S.; Schoppmann, S.; Schwetz, T.; Shaevitz, Marjorie Hansen; Shimojima, S.; Shrestha, D.; Sida, J. L.; Sinev, V.; Skorokhvatov, Mikhail D.; Smith, E.; Spitz, Joshua; Stahl, A.; Stancu, Ion; Stokes, Lee F. F.; Strait, M.; Stuken, A.; Suekane, F.; Sukhotin, S.; Sumiyoshi, T.; Sun, Y.; Svoboda, R.; Terao, K.; Tonazzo, A.; Toups, M.; Thi, H. H. T.; Valdiviesso, G. A.; Veyssiere, C.; Wagner, S.; Watanabe, H.; White, B.; Wiebusch, C.; Winslow, L.; Worcester, M.; Wurm, M.; Yermia, F.; Zimmer, V.; Double Chooz, Collaboration (American Physical Society, 2013-01-08)
    Double Chooz is unique among modern reactor-based neutrino experiments studying (nu) over bar (e) disappearance in that data can be collected with all reactors off. In this paper, we present data from 7.53 days of reactor-off running. Applying the same selection criteria as used in the Double Chooz reactor-on oscillation analysis, a measured background rate of 1.0 +/- 0.4 events/day is obtained. The background model for accidentals, cosmogenic beta-n-emitting isotopes, fast neutrons from cosmic muons, and stopped-mu decays used in the oscillation analysis is demonstrated to be correct within the uncertainties. Kinematic distributions of the events, which are dominantly cosmic-ray-produced correlated-background events, are provided. The background rates are scaled to the shielding depths of two other reactor-based oscillation experiments, Daya Bay and RENO.
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    Exceptionally preserved fossil assemblages through geologic time and space
    Muscente, A. D.; Schiffbauer, J. D.; Broce, J.; Laflamme, M.; O'Donnell, K.; Boag, T. H.; Meyer, M.; Hawkins, A. D.; Huntley, J. W.; McNamara, M.; MacKenzie, L. A.; Stanley, G. D.; Hinman, N. W.; Hofmann, M. H.; Xiao, S. (2017-08)
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    First test of Lorentz violation with a reactor-based antineutrino experiment
    Abe, Y.; Aberle, C.; dos Anjos, J. C.; Bergevin, M.; Bernstein, A.; Bezerra, T. J. C.; Bezrukhov, Leonid B.; Blucher, E.; Bowden, N. S.; Buck, C.; Busenitz, J.; Cabrera, A.; Caden, E.; Camilleri, Leslie; Carr, Rachel E.; Cerrada, M.; Chang, P. J.; Chimenti, P.; Classen, T.; Collin, A. P.; Conover, E.; Conrad, Janet M.; Crespo-Anadon, J. I.; Crum, K.; Cucoanes, A. S.; D'Agostino, M. V.; Damon, E.; Dawson, J. V.; Dazeley, S.; Dietrich, D.; Djurcic, Zelimir; Dracos, M.; Durand, V.; Ebert, J.; Efremenko, Y.; Elnimr, M.; Erickson, A.; Fallot, M.; Fechner, M.; von Feilitzsch, F.; Felde, J.; Fischer, V.; Franco, D.; Franke, A. J.; Franke, M.; Furuta, H.; Gama, R.; Gil-Botella, I.; Giot, L.; Goger-Neff, M.; Gonzalez, L. F. G.; Goodman, M. C.; Goon, J. T.; Greiner, D.; Haag, N.; Habib, S.; Hagner, C.; Hara, T.; Hartmann, F. X.; Haser, J.; Hatzikoutelis, A.; Hayakawa, T.; Hofmann, M.; Horton-Smith, Glenn A.; Ishitsuka, M.; Jochum, J.; Jollet, C.; Jones, C. L.; Kaether, F.; Kalousis, L. N.; Kamyshkov, Y.; Kaplan, D. M.; Katori, T.; Kawasaki, T.; Keefer, G.; Kemp, E.; de Kerret, H.; Konno, T.; Kryn, D.; Kuze, M.; Lachenmaier, Tobias; Lane, C. E.; Lasserre, T.; Letourneau, A.; Lhuillier, D.; Lima, H. P.; Lindner, M.; Lopez-Castano, J. M.; LoSecco, J. M.; Lubsandorzhiev, B. K.; Lucht, S.; McKee, D.; Maeda, J.; Maesano, C. N.; Mariani, Camillo; Maricic, Jelena; Martino, J.; Matsubara, T.; Mention, G.; Meregaglia, A.; Meyer, M.; Miletic, T.; Milincic, R.; Miyata, H.; Mueller, T. A.; Nagasaka, Y.; Nakajima, K.; Novella, P.; Obolensky, M.; Oberauer, L.; Onillon, A.; Osborn, A.; Ostrovskiy, I.; Palomares, C.; Pepe, I. M.; Perasso, S.; Perrin, P.; Pfahler, P.; Porta, A.; Potzel, W.; Pronost, G.; Reichenbacher, J.; Reinhold, B.; Remoto, A.; Roehling, M.; Roncin, R.; Roth, S.; Rybolt, B.; Sakamoto, Y.; Santorelli, R.; Sato, F.; Schoenert, S.; Schoppmann, S.; Schwetz, T.; Shaevitz, Marjorie Hansen; Shrestha, D.; Sida, J. L.; Sinev, V.; Skorokhvatov, Mikhail D.; Smith, E.; Spitz, Joshua; Stahl, A.; Stancu, Ion; Stokes, Lee F. F.; Strait, M.; Stuken, A.; Suekane, F.; Sukhotin, S.; Sumiyoshi, T.; Sun, Y.; Terao, K.; Tonazzo, A.; Toups, M.; Thi, H. H. T.; Valdiviesso, G. A.; Veyssiere, C.; Wagner, S.; Watanabe, H.; White, B.; Wiebusch, C.; Winslow, L.; Worcester, M.; Wurm, M.; Yanovitch, E.; Yermia, F.; Zimmer, V.; Double Chooz, Collaboration (American Physical Society, 2012-12-28)
    We present a search for Lorentz violation with 8249 candidate electron antineutrino events taken by the Double Chooz experiment in 227.9 live days of running. This analysis, featuring a search for a sidereal time dependence of the events, is the first test of Lorentz invariance using a reactor-based antineutrino source. No sidereal variation is present in the data and the disappearance results are consistent with sidereal time independent oscillations. Under the Standard-Model Extension, we set the first limits on 14 Lorentz violating coefficients associated with transitions between electron and tau flavor, and set two competitive limits associated with transitions between electron and muon flavor.
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    Modulations of the cosmic muon signal in ten years of Borexino data
    Agostini, Matteo; Altenmueller, Konrad; Appel, S.; Atroshchenko, Victor; Bagdasarian, Zara; Basilico, D.; Bellini, G.; Benziger, Jay; Bick, D.; Bolognino, Irene; 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. V.; Ding, X. F.; Di Ludovico, Antonio; Di Noto, Lea; Drachnev, I.; Fomenko, K.; Formozov, A.; Franco, D.; Gabriele, Federico; Galbiati, C.; Gschwender, M.; Ghiano, C.; Giammarchi, Marco; Goretti, A.; Gromov, M.; Guffanti, D.; Hagner, C.; Houdy, T.; Hungerford, Ed V.; Ianni, Aldo; Ianni, Andrea; Jany, A.; Jeschke, D.; Kobychev, V.; Korablev, D.; Korga, G.; Kudryavtsev, V. A.; Kumaran, S.; Lachenmaier, Tobias; Laubenstein, Matthias; Litvinovich, E.; Lombardi, Francesco; Lombardi, Paolo; Ludhova, L.; Lukyanchenko, G.; Lukyanchenko, L.; Machulin, I. N.; Manuzio, G.; Marcocci, S.; Maricic, Jelena; Martyn, J.; Meighen-Berger, S.; Meroni, E.; Meyer, M.; Miramonti, L.; Misiaszek, M.; Muratova, V. N.; Neumair, B.; Nieslony, M.; Oberauer, L.; Opitz, B.; Orekhov, V.; Ortica, F.; Pallavicini, M.; Papp, L.; Penek, Oe; Pietrofaccia, L.; Pilipenko, N.; Pocar, A.; Porcelli, A.; Raikov, G.; Ranucci, G.; Razeto, A.; Re, A.; Redchuk, M.; Romani, A.; Rossi, Nicola; Rottenanger, Sebastian; Schoenert, S.; Semenov, D. A.; Skorokhvatov, Mikhail D.; Smirnov, O. Y.; Sotnikov, A.; Stokes, Lee F. F.; Suvorov, Yura; Tartaglia, R.; Testera, G.; Thurn, J.; Toropova, M.; Unzhakov, E. V.; Vishneva, A.; Vogelaar, R. Bruce; von Feilitzsch, F.; Weinz, S.; Wojcik, M. M.; Wurm, M.; Yokley, Z. W.; Zaimidoroga, O.; Zavatarelli, S.; Zuber, Kai; Zuzel, G. (2019-02)
    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) center dot 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 e ff ective temperature coe ffi cient alpha(T) = 0.90 +/- 0.02. The origin of cosmic muons from pion and kaon decays in the atmosphere allows to interpret the e ff ective temperature coe ffi cient as an indirect measurement of the atmospheric kaon-topion production ratio r(K/pi) = 0.11(-0.07)(+0.11) for primary energies above 18TeV. We find evidence for a long-term modulation of the muon flux with a period of similar to 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)%.
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    Recent advances in understanding the terminal Ediacaran Earth-life system in South China and Arctic Siberia
    Cui, H.; Kaufman, Alan J.; Xiao, S.; Grazhdankin, D. V.; Peek, S.; Martin, A. J.; Bykova, N. V.; Rogov, V. I.; Liu, X. M.; Zhang, F.; Romaniello, S. J.; Anbar, A. D.; Peng, Y.; Cai, Y.; Schiffbauer, J. D.; Meyer, M.; Gilleaudeau, Geoffrey J.; Plummer, Rebecca E.; Sievers, N. E.; Goderis, S.; Claeys, P. (2019-11-22)
    The terminal Ediacaran contains dramatic changes in biogeochemical cycles, many of which are closely coupled with evolutionary transitions in the corresponding fossil records. Dynamic redox conditions may have caused a profound impact on early animal evolution. Our work highlights the significance of integrated bio-, litho-, and chemo-stratigraphy in geobiology research of the deep time.