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Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam
Agafonova, N.,Aleksandrov, A.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Bertolin, A.,Bozza, C.,Brugnera, R.,Buonaura, A.,Buontempo, S.,Chernyavskiy, M.,Chukanov, A.,Consiglio, L.,D’Ambrosio, N.,De Lel Institute of Physics Pub 2018 The journal of high energy physics Vol.2018 No.6
Observation of a first ν<sub>τ</sub> candidate event in the OPERA experiment in the CNGS beam
Agafonova, N.,Aleksandrov, A.,Altinok, O.,Ambrosio, M.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Autiero, D.,Badertscher, A.,Bagulya, A.,Bendhabi, A.,Bertolin, A.,Besnier, M.,Bick, D.,Boyarkin, V.,Boz North-Holland Pub. Co 2010 Physics letters: B Vol.691 No.3
The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode through the study of the ν<SUB>μ</SUB>->ν<SUB>τ</SUB> channel. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008 and 2009. After a brief description of the beam, the experimental setup and the procedures used for the analysis of the neutrino events, we describe the topology and kinematics of a first candidate ν<SUB>τ</SUB> charged-current event satisfying the kinematical selection criteria. The background calculations and their cross-check are explained in detail and the significance of the event is assessed.
New results on ν μ → ν τ appearance with the OPERA experiment in the CNGS beam
Agafonova, N.,Aleksandrov, A.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Asada, T.,Autiero, D.,Badertscher, A.,Ben Dhahbi, A.,Bender, D.,Bertolin, A.,Bozza, C.,Brugnera, R.,Brunetti, G.,Bü,ttner, B Springer-Verlag 2013 Journal of high energy physics Vol.2013 No.11
Evidence forνμ→ντappearance in the CNGS neutrino beam with the OPERA experiment
Agafonova, N.,Aleksandrov, A.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Asada, T.,Autiero, D.,Ben Dhahbi, A.,Badertscher, A.,Bender, D.,Bertolin, A.,Bozza, C.,Brugnera, R.,Brunet, F.,Brunetti, G.,Buon American Physical Society 2014 PHYSICAL REVIEW D - Vol.89 No.5
Final Results of the OPERA Experiment on ντ Appearance in the CNGS Neutrino Beam
Agafonova, N.,Alexandrov, A.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Bertolin, A.,Bozza, C.,Brugnera, R.,Buonaura, A.,Buontempo, S.,Chernyavskiy, M.,Chukanov, A.,Consiglio, L.,D’Ambrosio, N.,De Lell American Physical Society 2018 Physical review letters Vol.120 No.21
<P>The OPERA experiment was designed to study nu mu -> nu tau oscillations in the appearance mode in the CERN to Gran Sasso Neutrino beam (CNGS). In this Letter, we report the final analysis of the full data sample collected between 2008 and 2012, corresponding to 17.97 x 10(19) protons on target. Selection criteria looser than in previous analyses have produced ten nu(tau) candidate events, thus reducing the statistical uncertainty in the measurement of the oscillation parameters and of nu(tau) properties. A multivariate approach for event identification has been applied to the candidate events and the discovery of nu(tau) appearance is confirmed with an improved significance level of 6.1 sigma. |Delta m(32)(2)| has been measured, in appearance mode, with an accuracy of 20%. The measurement of the nu(tau) charged-current cross section, for the first ti me with a negligible contamination from p(z), and the first direct evidence for the nu(tau) lepton number are also reported.</P>
D.L. Aminin,I.G. Agafonova,V.I. Kalinin,A.S. Silchenko,S.A. Avilov,V.A. Stonik,P.D. Collin,C. Woodward 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.3
Frondoside A, a major triterpene glycoside from North Atlantic commercially harvested sea cucumber Cucumaria frondosa, possesses strong immunomodulatory properties in subtoxic doses. Frondoside A stimulates lysosomal activity of mouse macrophages in vivo at a maximal effective stimulatory dose of 0.2 μg per mouse and is maintained over 10 days. This glycoside also shows a 30% stimulation of lysosomal activity in mouse macrophages in vitro at concentrations of 0.1–0.38 μg/mL. Frondoside A enhances macrophage phagocytosis of the bacterium Staphylococcus aureus in vitro at a maximal effective concentration of 0.001 μg/mL. Frondoside A stimulates reactive oxygen species formation in macrophages in vitro at a maximal effective concentration of 0.001 μg/mL. Frondoside A stimulates an increase in the number of antibody plaque-forming cells (normally B-cells in spleen) in vivo with a maximal stimulatory effect at a concentration of 0.2 μg per mouse (stimulatory index, 1.86). Frondoside A has a weak effect upon immunoglobulin (Ig) M production after immunization with sheep erythrocytes in mice. Frondoside A does not stimulate Ig production in mice and does not significantly enhance the ovalbumin-stimulated IgM and IgG antibody levels in ovalbumin-immunized mice. Hence frondoside A is an immunostimulant of cell-based immunity including phagocytosis without a significant effect on amplification of humoral immune activity or adjuvant properties. Therefore, frondoside A may provide curative and/or preventive treatment options against diseases wherein a depleted immune status contributes to the pathological processes.