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4. Erratum to: Several Articles in JETP Letters

Author

S. B. Shaulov, V. A. Ryabov, A. L. Shepetov, S. E. Pyatovsky, V. V. Zhukov, E. A. Kupriyanova, E. N. Gudkova, Yu. M. Gavrilyuk, A. N. Gangapshev, A. V. Derbin, I. S Drachnev, V. V. Kazalov, V. V. Kuzminov, M. S. Mikulich, V. N. Muratova, D. A. Tekueva, E. V. Unzhakov, S. P. Yakimenko, S. V. Sazonov, B. I. Bantysh, K. G. Katamadze, Yu. I. Bogdanov, K. I. Gerasimov, M. M. Minnegaliev, R. V. Urmancheev, S. A. Moiseev, I. Yu. Zudin, M. E. Gushchin, A. V. Strikovskiy, S. V. Korobkov, I. A. Petrova, A. N. Katkov, V. V. Kochedykov, S. Bondarenko, and M. A. Zubkov

Subjects
Physics and Astronomy (miscellaneous)
Abstract

An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022390011

Published
2022

5. New Constraints on the Axion–Electron Coupling Constant for Solar Axions

Author

Yu. M. Gavrilyuk, A. N. Gangapshev, A. V. Derbin, I. S. Drachnev, V. V. Kazalov, V. V. Kuzminov, M. S. Mikulich, V. N. Muratova, D. A. Tekueva, E. V. Unzhakov, and S. P. Yakimenko

Subjects
Physics and Astronomy (miscellaneous)
Abstract

The resonant excitation of the 83Kr first excited nuclear level (E = 9.4 keV) by solar axions whose fluxes depend on the axion–electron coupling constant gAe is sought. The γ- and X-ray photons and the conversion and Auger electrons from the excited-level relaxation are detected with a gas proportional counter of a low-background detector in the underground Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences). As a result, a new constraint $${\text{|}}{{g}_{{Ae}}}(g_{{AN}}^{3} - g_{{AN}}^{0}){\text{|}}$$ ≤ 1.50 × 10–17 (90% C.L.) has been obtained for the axion–electron and axion–nucleon coupling constants, which corresponds to new constraints on the axion mass mA ≤ 320 eV and mA ≤ 4.6 eV in the KSVZ and DFSZ axion models, respectively.

Published
2022

7. Erratum to: Several Articles in JETP Letters

Author

Shaulov, S. B., primary, Ryabov, V. A., additional, Shepetov, A. L., additional, Pyatovsky, S. E., additional, Zhukov, V. V., additional, Kupriyanova, E. A., additional, Gudkova, E. N., additional, Gavrilyuk, Yu. M., additional, Gangapshev, A. N., additional, Derbin, A. V., additional, Drachnev, I. S, additional, Kazalov, V. V., additional, Kuzminov, V. V., additional, Mikulich, M. S., additional, Muratova, V. N., additional, Tekueva, D. A., additional, Unzhakov, E. V., additional, Yakimenko, S. P., additional, Sazonov, S. V., additional, Bantysh, B. I., additional, Katamadze, K. G., additional, Bogdanov, Yu. I., additional, Gerasimov, K. I., additional, Minnegaliev, M. M., additional, Urmancheev, R. V., additional, Moiseev, S. A., additional, Zudin, I. Yu., additional, Gushchin, M. E., additional, Strikovskiy, A. V., additional, Korobkov, S. V., additional, Petrova, I. A., additional, Katkov, A. N., additional, Kochedykov, V. V., additional, Bondarenko, S., additional, and Zubkov, M. A., additional

Published
2022
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8. A Silicon 4π Spectrometer of β-Decay Electrons with Energies of up to 3 MeV

Author

I. M. Kotina, M. V. Trushin, D. A. Semenov, V. N. Muratova, I. E. Alekseev, E. A. Chmel, S. V. Bakhlanov, I. S. Drachnev, E. V. Unzhakov, A. V. Derbin, and N. V. Niyazova

Subjects
010302 applied physics, Materials science, Spectrometer, Silicon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, Electron, 01 natural sciences, Spectral line, Coincidence, Crystal, chemistry, Excited state, 0103 physical sciences, Atomic physics, Nuclear Experiment, Instrumentation
Abstract

A 4π β spectrometer consists of two Si(Li) detectors with a sensitive region that is more than 8-mm thick. Using this total-absorption spectrometer it is possible to make a direct measurement of β spectra without correcting the response function for the electron backscattering from the crystal surface. The β spectra of transitions to the excited states of daughter nuclei have been measured using an additional 3'' BGO detector of γ rays, which is connected in coincidence with the pair of Si(Li) detectors.

Published
2021

12. Search for a Neutrino with a Mass of 0.01–1.0 MeV in Beta Decays of 144Ce–144Pr Nuclei

Author

A. V. Derbin, V. N. Muratova, I. S. Drachnev, E. V. Unzhakov, L. M. Tukkhonen, D. A. Semenov, N. V. Pilipenko, A. Kh. Khusainov, and I. S. Lomskaya

Subjects
Physics, Physics and Astronomy (miscellaneous), Solid-state physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Electron, 01 natural sciences, Upper and lower bounds, Spectral line, Nuclear physics, Beta (plasma physics), 0103 physical sciences, High Energy Physics::Experiment, Heavy neutrino, Neutrino, 010306 general physics, Mixing (physics)
Abstract

Spectra of electrons from beta decays of 144Ce–144Pr nuclei have been measured and analyzed in order to find a contribution from a heavy neutrino. For the neutrino with the mass mνH in the interval of 150–350 keV, a new upper bound |UeH|2 ≤ (2−5) × 10−3 at 90% C.L. has been found for the mixing parameter.

Published
2018

13. New Constraints on the Axion–Photon Coupling Constant for Solar Axions

Author

V. V. Kuzminov, A. N. Gangapshev, V. N. Muratova, V. V. Kazalov, V. V. Kobychev, D. A. Tekueva, A. V. Derbin, Yu. M. Gavrilyuk, E. V. Unzhakov, S. S. Ratkevich, I. S. Drachnev, S. P. Yakimenko, and S. I. Panasenko

Subjects
Physics, Coupling constant, Photon, Physics and Astronomy (miscellaneous), Auger effect, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Relaxation (NMR), Proportional counter, 01 natural sciences, Nuclear physics, High Energy Physics::Theory, symbols.namesake, Observatory, 0103 physical sciences, symbols, High Energy Physics::Experiment, Neutrino, 010306 general physics, Axion
Abstract

Resonance excitation of the 83Kr first nuclear level (E = 9.4 keV) by solar axions formed via the Primakoff mechanism is sought. The γ- and X-ray photons and the conversion and Auger electrons arising from the excited-level relaxation are detected with a gas proportional counter of a low-background detector in the underground Baksan Neutrino Observatory. The following experimental constraint is obtained for the product of the axion–photon coupling constant and the axion mass:|gAγ × mA| ≤ 6.3 × 10 -17 In the framework of the hadronic-axion model, this corresponds to a new axion-mass constraint of mA ≤ 12.7 eV at 95% C.L.

Published
2018

14. A Beta Spectrometer Based on Silicon Detectors

Author

E. V. Unzhakov, S. V. Bakhlanov, A. V. Derbin, I. S. Drachnev, N. V. Bazlov, E. A. Chmel, D. A. Semenov, I. M. Kotina, N. V. Pilipenko, V. N. Muratova, and V. K. Eremin

Subjects
Physics, Spectrometer, Silicon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, chemistry.chemical_element, 01 natural sciences, Spectral line, Optics, medicine.anatomical_structure, chemistry, 0103 physical sciences, medicine, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, business, Neutrino oscillation, Instrumentation, Nucleus, β radiation
Abstract

The characteristics of a beta spectrometer that consists of a total-absorption Si(Li) detector and a drift Si detector are presented. Using this spectrometer, it is possible to efficiently separate β radiation of nuclei from concomitant X and γ rays. The method is based on coincidences between signals from the thick and thin detectors. The spectrometer can be used to precisely measure the shape of the β spectra of various radioactive nuclei, in particular, of the 144Pr nucleus, which is the most promising antineutrino source for searching for neutrino oscillations into a sterile state.

Published
2018

16. Results of Searching for Solar Hadronic Axions Emitted in the M1 Transition in 83Kr Nuclei

Author

S. S. Ratkevich, V. V. Kuzminov, S. P. Yakimenko, V. N. Muratova, D. A. Tekueva, A. Kh. Khokonov, A. V. Derbin, Yu. M. Gavrilyuk, E. V. Unzhakov, I. S. Drachnev, S. I. Panasenko, Z. A. Akhmatov, V. V. Kobychev, V. V. Kazalov, and A. M. Gangapshev

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Star (game theory), Hadron, Electron, Resonant absorption, 01 natural sciences, 0103 physical sciences, Atomic physics, 010306 general physics, Axion, Energy (signal processing)
Abstract

Axions with the energy of $$9.4$$ keV emitted in the М1 transition in 83Kr nuclei in the Sun have been searched for using the resonant absorption reaction $$A + \,{{\,}^{{83}}}{\kern 1pt} {\text{Kr}} \to \,{{\,}^{{83}}}{\text{K}}{{{\text{r}}}^{ \star }} \to \,{{\,}^{{83}}}{\kern 1pt} {\text{Kr}} + \gamma ,e$$ (9.4 keV). A krypton-filled proportional counter located in a low-background setup is used to detect $$\gamma $$ rays and electrons. A new limit on the axion–nucleon coupling constant $$\left| {g_{{AN}}^{3} - g_{{AN}}^{0}} \right| \leqslant 8.4 \times {{10}^{{ - 7}}}$$ is obtained. In the hadronic axion model, it leads to a new limit on the axion mass $${{m}_{A}} \leqslant 65$$ eV (95% CL). A possibility of searching for solar axions with 57Fe-containing semiconductor crystals is described.

Published
2018

17. Search for resonant absorption of solar axions emitted in M1-transitions in 83Kr nuclei: Second stage of the experiment

Author

S. P. Yakimenko, V. V. Kazalov, V. N. Muratova, S. I. Panasenko, A. V. Derbin, D. A. Tekueva, V. V. Kuzminov, Yu. M. Gavrilyuk, A. M. Gangapshev, E. V. Unzhakov, and S. S. Ratkevich

Subjects
Coupling constant, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Krypton, Hadron, chemistry.chemical_element, Proportional counter, Resonant absorption, Electron, 01 natural sciences, Nuclear physics, medicine.anatomical_structure, chemistry, 0103 physical sciences, medicine, 010306 general physics, Nucleus, Axion
Abstract

Axions with energies of 9.4 keV putatively produced in the Sun via an M1-transition in the 83Kr nucleus are searched for using the reaction of resonant absorption: A +83Kr →83Kr* →83Kr + γ, e (9.4 keV). The γ-quanta and electrons are detected with a proportional counter filled with krypton and placed in a low-background setup. A new upper limit on the axion–nucleon coupling constant is imposed: |g AN 3 g AN 0 |≤1.02 106. For the hadronic axion, this implies a new upper limit on the axion mass: m A ≤ 79eV at the 95% confidence level.

Published
2018

18. A method for measuring the detector response function for monochromatic electrons based on Compton scattering

Author

A. S. Kayunov, E. V. Unzhakov, A. V. Derbin, D. A. Semenov, V. N. Muratova, S. V. Bakhlanov, and I. S. Drachnev

Subjects
Physics, Scintillation, Photon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Attenuation length, Compton scattering, Electron, Scintillator, 01 natural sciences, Optics, 0103 physical sciences, High Energy Physics::Experiment, Monochromatic color, 010306 general physics, business, Instrumentation
Abstract

A method for calibrating the energy scale of a scintillation detector using γ rays has been proposed and implemented. The technique is based on Compton scattering in the scintillation detector, followed by photoelectric absorption of a scattered γ-ray photon in a Ge detector. The novelty of the method consists in placing the γ-ray source and the scintillation and Ge detectors tightly to each other. The method is efficient for detectors with a low-Z material for which the ratio of the cross sections for Compton scattering and photoeffect is great in value and the attenuation length of the γ-ray flux is comparable to the detector dimensions. The described technique can be used to precisely investigate the dependence of the light yield in a scintillator on the electron energy.

Published
2016

19. New experiment on search for the resonance absorption of solar axion emitted in the M1 transition of 83Kr nuclei

Author

V. V. Kazalov, V. V. Kobychev, D. A. Tekueva, V. V. Kuzminov, A. V. Derbin, I. S. Drachnev, E. V. Unzhakov, S. I. Panasenko, Yu. M. Gavrilyuk, A. N. Gangapshev, V. N. Muratova, S. S. Ratkevich, D. A. Semenov, and S. P. Yakimenko

Subjects
Physics, Physics and Astronomy (miscellaneous), Isovector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Isoscalar, Nuclear Theory, Hadron, Krypton, chemistry.chemical_element, Electron, Nuclear physics, chemistry, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Nucleon, Axion
Abstract

Axions with an energy of 9.4 keV emitted in the M1 transition of 83Kr nuclei in the Sun have been sought in the resonance absorption reaction A + 83Kr → 83Kr* → 83Kr + γ, e (9.4 keV). A proportional gas chamber filled with krypton and placed in a low-background setup at the underground laboratory of the Baksan neutrino observatory was used to detect γ-ray photons and electrons appearing after the decay of a nuclear level. As a result, a new constraint has been determined on the isoscalar and isovector coupling constants of the axion with nucleons: |gAN3– gAN0| ≤ 1.29 × 10–6. This constraint results in the following new bound on the mass of the axion in the hadronic axion model: mA ≤ 100 eV (95% C.L.).

Published
2015

20. First result of the experimental search for the 9.4 keV solar axion reactions with 83Kr in the copper proportional counter

Author

V. V. Kazalov, E. V. Unzhakov, S. I. Panasenko, S. S. Ratkevich, H. J. Kim, A. M. Gangapshev, S. P. Yakimenko, V. V. Kobychev, D. A. Semenov, A. V. Derbin, Yu. M. Gavrilyuk, V. V. Kuzminov, Luqman Ali, Y. D. Kim, D. A. Tekueva, and V. N. Muratova

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Krypton, FOS: Physical sciences, Proportional counter, chemistry.chemical_element, Instrumentation and Detectors (physics.ins-det), Particle detector, Nuclear physics, chemistry, Observatory, Excited state, Invariant mass, Nuclear Experiment (nucl-ex), Neutrino, Nuclear Experiment, Axion
Abstract

The experimental search for solar hadronic axions is started at the Baksan Neutrino Observatory of the Institute for Nuclear Researches Russian Academy of Science. It is assumed that axions are created in the Sun during M1-transition between the first thermally excited level at 9.4 keV and the ground state in Kr-83. The experiment is based on axion detection via resonant absorption process by the same nucleus in the detector. The big copper proportional counter filled with krypton is used to detect signals from axions. The experimental setup is situated in the deep underground low background laboratory. No evidence of axion detection were found after the 26.5 days data collection. Resulting new upper limit on axion mass is m_{A} < 130 eV at 95% C.L., Talk at the International Workshop on Prospects of Particle Physics: "Neutrino Physics and Astrophysics" Jan 26 - Ferb 2, 2014, Valday, Russia, 10 pages, 5 figures

Published
2015

22. Results of Searching for Solar Hadronic Axions Emitted in the M1 Transition in 83Kr Nuclei

Author

Akhmatov, Z. A., primary, Gavrilyuk, Yu. M., additional, Gangapshev, A. M., additional, Derbin, A. V., additional, Drachnev, I. S., additional, Kazalov, V. V., additional, Kobychev, V. V., additional, Kuz’minov, V. V., additional, Muratova, V. N., additional, Panasenko, S. I., additional, Ratkevich, S. S., additional, Tekueva, D. A., additional, Unzhakov, E. V., additional, Khokonov, A. Kh., additional, and Yakimenko, S. P., additional

Published
2018
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23. New Constraints on the Axion–Photon Coupling Constant for Solar Axions

Author

Gavrilyuk, Yu. M., primary, Gangapshev, A. N., additional, Derbin, A. V., additional, Drachnev, I. S., additional, Kazalov, V. V., additional, Kobychev, V. V., additional, Kuzminov, V. V., additional, Muratova, V. N., additional, Panasenko, S. I., additional, Ratkevich, S. S., additional, Tekueva, D. A., additional, Unzhakov, E. V., additional, and Yakimenko, S. P., additional

Published
2018
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24. A Beta Spectrometer Based on Silicon Detectors

Author

Bazlov, N. V., primary, Bakhlanov, S. V., additional, Derbin, A. V., additional, Drachnev, I. S., additional, Eremin, V. K., additional, Kotina, I. M., additional, Muratova, V. N., additional, Pilipenko, N. V., additional, Semenov, D. A., additional, Unzhakov, E. V., additional, and Chmel, E. A., additional

Published
2018
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26. Constraints on the axion-electron coupling constant for solar axions appearing owing to bremsstrahlung and the compton process

Author

A. V. Derbin, A. Kayunov, I. Drachnev, and V. N. Muratova

Subjects
Nuclear physics, Coupling constant, Physics, Physics and Astronomy (miscellaneous), Silicon, chemistry, Solid-state physics, Compton scattering, Bremsstrahlung, chemistry.chemical_element, Electron, Photoelectric effect, Axion
Abstract

The axio-electric effect in silicon atoms is sought for solar axions appearing owing to bremsstrahlung and the Compton process. Axions are detected using a Si(Li) detector placed in a low-background setup. As a result, a model-independent constraint on the axion-electron coupling constant |g Ae | ≤ 2.2 × 10−10 has been obtained, which leads to the bounds m A ≤ 7.9 eV and m A ≤ 1.4 eV (at 90% C.L.) for the mass of the axion in the DFSZ and KSVZ models, respectively.

Published
2012

27. New limit on the mass of 14.4-keV solar axions emitted in an M1 transition in 57Fe nuclei

Author

E. V. Unzhakov, A. V. Derbin, D. A. Semenov, and V. N. Muratova

Subjects
Nuclear physics, Physics, Coupling, Nuclear and High Energy Physics, Photon, Invariant mass, Resonant absorption, Limit (mathematics), Nucleon, Axion, Atomic and Molecular Physics, and Optics, Semiconductor detector
Abstract

Axions of energy 14.4 keV that originated from the M1 transition in 57Fe nuclei in the Sun were sought by using the resonance-absorption reaction A+57Fe → 57Fe* → 57Fe+γ (14.4 keV). Asectioned Si(Li) detector arranged in a low-background facility was used to record photons from this reaction. This resulted in setting a new limit on the axion couplings to nucleons, |−1.19g 0 + g 3 | ≤ 3.0×10−6. Within the hadronic-axion model, the respective constraint on the axion mass is m A ≤ 145 eV (at a 95% C.L.).

Published
2011

28. New experimental limits on the probabilities of pauli-forbidden transitions in the 12C nucleus from data obtained with the borexino detector

Author

A. V. Derbin and K. Fomenko

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, Physics::Instrumentation and Detectors, Nuclear Theory, Detector, Electron, Atomic and Molecular Physics, and Optics, Nuclear physics, symbols.namesake, Pauli exclusion principle, Semi-empirical mass formula, symbols, Neutron, Nuclear Experiment, Nucleon, Borexino
Abstract

The Pauli exclusion principle was tested for nucleons in the 12C nucleus by using data from the Borexino detector. The approach used consisted in seeking photons, neutrons, and protons, as well as electrons and positrons, emitted in the Pauli-forbidden transitions of nucleons from the 1P 3/2 shell to the filled 1S 1/2 shell. Owing to a uniquely low background level in the Borexino detector and its large mass, the currently most stringent experimental limits were obtained for the probabilities and relative intensities of Pauli-forbidden transitions for the electromagnetic, strong, and weak channels.

Published
2010

29. First results of the Borexino experiment

Author

A. V. Derbin

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Oscillation, Scattering, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Electron, Atomic and Molecular Physics, and Optics, Nuclear physics, symbols.namesake, Pauli exclusion principle, symbols, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Borexino
Abstract

Data of the Borexino experiment on the detection of the reaction involving elastic solar-neutrino scattering on an electron are presented. The fraction of electron neutrinos in the fluxes of 7Be and 8B neutrinos is in agreement with the LMA MSW oscillation solution. The uniquely low level of the Borexino detector background made it possible to set new limits on the effective magnetic moment of the neutrino, on the possible violation of the Pauli exclusion principle, and on some other rare processes.

Published
2010

30. Search for resonant absorption of solar axions emitted in an M1 transition in 57Fe nuclei

Author

N. V. Bazlov, D. A. Semenov, A. I. Egorov, I. A. Mitropolsky, A. V. Derbin, E. V. Unzhakov, S. V. Bakhlanov, and V. N. Muratova

Subjects
Nuclear physics, Physics, Photon, Physics and Astronomy (miscellaneous), Solid-state physics, Physics::Instrumentation and Detectors, Excited state, Detector, Resonant absorption, Atomic physics, Nuclear Experiment, Axion, Excitation
Abstract

The resonant absorption of solar axions by 57Fe nuclei, which is accompanied by the excitation of the first excited nuclear level: A + 57Fe → 57Fe* → 57Fe + γ(14.4 keV), is sought. To seek 14.4-keV photons, a Si(Li) detector and an enriched 57Fe target are used. The detector and target are placed in a low-background setup equipped with passive and active shieldings. As a result, a new upper limit m A ≤ 360 eV (at 90% C.L.) has been determined for the axion mass.

Published
2007

31. The search for sterile neutrinos with SOX-Borexino

Author

Altenmüller, K., primary, Agostini, M., additional, Appel, S., additional, Bellini, G., additional, Benziger, J., additional, Berton, N., additional, Bick, D., additional, Bonfini, G., additional, Bravo, D., additional, Caccianiga, B., additional, Calaprice, F., additional, Caminata, A., additional, Cavalcante, P., additional, Chepurnov, A., additional, Cribier, M., additional, D’Angelo, D., additional, Davini, S., additional, Derbin, A., additional, di Noto, L., additional, Drachnev, I., additional, Durero, M., additional, Empl, A., additional, Etenko, A., additional, Farinon, S., additional, Fischer, V., additional, Fomenko, K., additional, Franco, D., additional, Gabriele, F., additional, Gaffiot, J., additional, Galbiati, C., additional, Ghiano, C., additional, Giammarchi, M., additional, Göger-Neff, M., additional, Goretti, A., additional, Gromov, M., additional, Hagner, C., additional, Houdy, Th., additional, Hungerford, E., additional, Ianni, Aldo, additional, Ianni, Andrea, additional, Jonqures, N., additional, Kaiser, M., additional, Kobychev, V., additional, Korablev, D., additional, Korga, G., additional, Kryn, D., additional, Lachenmaier, T., additional, Lasserre, T., additional, Laubenstein, M., additional, Lehnert, B., additional, Link, J., additional, Litvinovich, E., additional, Lombardi, F., additional, Lombardi, P., additional, Ludhova, L., additional, Lukyanchenko, G., additional, Machulin, I., additional, Maneschg, W., additional, Marcocci, S., additional, Maricic, J., additional, Mention, G., additional, Meroni, E., additional, Meyer, M., additional, Miramonti, L., additional, Misiaszek, M., additional, Montuschi, M., additional, Muratova, V., additional, Musenich, R., additional, Neumair, B., additional, Oberauer, L., additional, Obolensky, M., additional, Ortica, F., additional, Pagani, L., additional, Pallavicini, M., additional, Papp, L., additional, Perasso, L., additional, Pocar, A., additional, Ranucci, G., additional, Razeto, A., additional, Re, A., additional, Roncin, R., additional, Romani, A., additional, Rossi, N., additional, Schönert, S., additional, Scola, L., additional, Semenov, D., additional, Simgen, H., additional, Skorokhvatov, M., additional, Smirnov, O., additional, Sotnikov, A., additional, Sukhotin, S., additional, Suvorov, Y., additional, Tartaglia, R., additional, Testera, G., additional, Toropova, M., additional, Unzhakov, E., additional, Veyssière, C., additional, Vivier, M., additional, Vogelaar, R. B., additional, von Feilitzsch, F., additional, Wang, H., additional, Winter, J., additional, Wojcik, M., additional, Wurm, M., additional, Yokley, Z., additional, Zaimidoroga, O., additional, Zavatarelli, S., additional, Zuber, K., additional, and Zuzel, G., additional

Published
2016
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32. Search for solar axions emitted in an M1 transition in 7Li* nuclei

Author

V. N. Muratova, I. A. Mitropolsky, A. I. Egorov, and A. V. Derbin

Subjects
Physics, Physics and Astronomy (miscellaneous), Solid-state physics, Physics::Instrumentation and Detectors, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, chemistry.chemical_element, Resonant absorption, Nuclear physics, chemistry, Energy spectrum, Lithium, Atomic physics, Nuclear Experiment, Hpge detector, Axion, Excitation
Abstract

The resonance absorption of solar axions by 7Li nuclei, which is accompanied by the excitation of the first nuclear level of lithium a + 7Li → 7Li* → 7Li + γ, is sought. To this end, the energy spectrum has been measured by an HPGe detector that is surrounded by a LiOH layer. A new upper limit ma ≤ 16 keV (at 90% C.L.) has been determined for the mass of the hadron axion.

Published
2005

33. On the possibility of detecting solar pp neutrino with the large-volume liquid organic scintillator detector

Author

A. V. Derbin, O. Yu. Smirnov, and O. Zaimidoroga

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Scintillator, Atomic and Molecular Physics, and Optics, Physics::Geophysics, Nuclear physics, Neutrino detector, Volume (thermodynamics), High Energy Physics::Experiment, Invariant mass, Neutrino, Borexino
Abstract

It is shown that a large volume liquid organic scintillator detector with an energy resolution of 10 keV at 200 keV 1 sigma will be sensitive to solar pp-neutrino, if operated at the target radiopurity levels for the Borexino detector, or the solar neutrino project of KamLAND., 18 pages, 2 figures, 4 tables. Contributed paper to the Nonaccelerating New Neutrino Physic. NANP-2003, Dubna. To be published in Phys.At.Nucl.(2004)

Published
2004

34. Search for solar pp neutrinos with an upgrade of CTF detector

Author

A. V. Derbin, O. Zaimidoroga, and O.Ju. Smirnov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Active volume, Solar neutrino, Detector, Scintillator, Atomic and Molecular Physics, and Optics, Nuclear physics, Recoil, Upgrade, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Borexino
Abstract

The possibility of using ultrapure liquid organic scintillator as a low-energy solar neutrino detector is discussed. The detector with an active volume of 10 t and 4π coverage will count 1.8 pp neutrinos and 5.4 7Be neutrinos per day with an energy threshold of 170 keV for the recoil electrons. The evaluation of the detector sensitivity and backgrounds is based on the results obtained by the Borexino collaboration with the Counting Test Facility (CTF). The detector can be build at the LNGS underground laboratory as an upgrade of the CTF detector using already developed technologies.

Published
2003

35. Search for neutrino radiative decay with a prototype Borexino detector

Author

A. V. Derbin and O.Ju. Smirnov

Subjects
Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Solar neutrino, Detector, Radiative decay, Radiative transfer, Neutrino, Lower limit, Order of magnitude, Borexino
Abstract

Results of background measurements with a prototype of the Borexino detector were used to obtain bounds on the lifetime of radiative neutrino decay νH→νL+γ. The new lower limit for the lifetime of pp and 7Be neutrinos is τc.m.(νH→νL+γ) /mν≥4.2×103 s eV−1(α)= 0). It is more than an order of magnitude stronger than the value obtained in previous experiments using nuclear reactors and accelerators.

Published
2002

36. Search for axions emitted in nuclear magnetic transitions

Author

A. I. Egorov, S. V. Bakhlanov, L. M. Tukhkonen, A. V. Derbin, I. A. Mitropolsky, and V. N. Muratova

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Axion, Atomic and Molecular Physics, and Optics, Magnetic transitions
Abstract

Searches for invisible axions emitted in the electromagnetic transitions of isomeric nuclei are continued. It is found experimentally that the probability of axion emission in an M1 transition in 125mTe is less than 8.5×10−6 (90% C.L.).

Published
2002

37. Measurement of neutrino flux from the primary proton–proton fusion process in the Sun with Borexino detector

Author

Smirnov, O. Yu., primary, Agostini, M., additional, Appel, S., additional, Bellini, G., additional, Benziger, J., additional, Bick, D., additional, Bonfini, G., additional, Bravo, D., additional, Caccianiga, B., additional, Calaprice, F., additional, Caminata, A., additional, Cavalcante, P., additional, Chepurnov, A., additional, Choi, K., additional, D’Angelo, D., additional, Davini, S., additional, Derbin, A., additional, Di Noto, L., additional, Drachnev, I., additional, Empl, A., additional, Etenko, A., additional, Fomenko, K., additional, Franco, D., additional, Gabriele, F., additional, Galbiati, C., additional, Ghiano, C., additional, Giammarchi, M., additional, Goeger-Neff, M., additional, Goretti, A., additional, Gromov, M., additional, Hagner, C., additional, Hungerford, E., additional, Ianni, Aldo, additional, Ianni, Andrea, additional, Jedrzejczak, K., additional, Kaiser, M., additional, Kobychev, V., additional, Korablev, D., additional, Korga, G., additional, Kryn, D., additional, Laubenstein, M., additional, Lehnert, B., additional, Litvinovich, E., additional, Lombardi, F., additional, Lombardi, P., additional, Ludhova, L., additional, Lukyanchenko, G., additional, Machulin, I., additional, Manecki, S., additional, Maneschg, W., additional, Marcocci, S., additional, Meroni, E., additional, Meyer, M., additional, Miramonti, L., additional, Misiaszek, M., additional, Mosteiro, P., additional, Muratova, V., additional, Neumair, B., additional, Oberauer, L., additional, Obolensky, M., additional, Ortica, F., additional, Otis, K., additional, Pagani, L., additional, Pallavicini, M., additional, Papp, L., additional, Perasso, L., additional, Pocar, A., additional, Ranucci, G., additional, Razeto, A., additional, Re, A., additional, Romani, A., additional, Roncin, R., additional, Rossi, N., additional, Schönert, S., additional, Semenov, D., additional, Simgen, H., additional, Skorokhvatov, M., additional, Sotnikov, A., additional, Sukhotin, S., additional, Suvorov, Y., additional, Tartaglia, R., additional, Testera, G., additional, Thurn, J., additional, Toropova, M., additional, Unzhakov, E., additional, Vogelaar, R. B., additional, von Feilitzsch, F., additional, Wang, H., additional, Weinz, S., additional, Winter, J., additional, Wojcik, M., additional, Wurm, M., additional, Yokley, Z., additional, Zaimidoroga, O., additional, Zavatarelli, S., additional, Zuber, K., additional, and Zuzel, G., additional

Published
2016
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39. Measurement of the 45Ca β spectrum in search of deviations from the theoretical shape

Author

Aleksandr Vladimirovich Derbin, A. I. Egorov, S. V. Bakhlanov, and V. N. Muratova

Subjects
Physics, Physics and Astronomy (miscellaneous), Solid-state physics, Physics::Instrumentation and Detectors, business.industry, Spectrum (functional analysis), Detector, Computational physics, Optics, Interval (graph theory), High Energy Physics::Experiment, Monochromatic color, Neutrino, business, Mixing (physics)
Abstract

The 45Ca β spectrum has been measured with a Si(Li) detector. New limits on the mixing parameter (|U eH |2≤0.005) for a neutrino with mass in the interval 75–100 keV are obtained. The possibility of a monochromatic peak appearing at the end of the β spectrum is analyzed.

Published
1997

40. Search for the invisible axion emitted in the M1 transition in 125m Te

Author

S. V. Bakhlanov, I. A. Mitropol’skii, A. I. Egorov, V. N. Muratova, Aleksandr Vladimirovich Derbin, and L. M. Tukhkonen

Subjects
Physics, Nuclear physics, Particle physics, Physics and Astronomy (miscellaneous), Solid-state physics, Axion
Abstract

A method of searching for the invisible axion emitted in M transitions of isomeric nuclei is proposed. It is determined experimentally that the probability of emission of an axion in the M1 transition in 125m Te is ⩽1.3⋅10−5 (90% confidence level).

Published
1997

41. New experiment on search for the resonance absorption of solar axion emitted in the M1 transition of 83Kr nuclei

Author

Gavrilyuk, Yu. M., primary, Gangapshev, A. N., additional, Derbin, A. V., additional, Drachnev, I. S., additional, Kazalov, V. V., additional, Kobychev, V. V., additional, Kuz’minov, V. V., additional, Muratova, V. N., additional, Panasenko, S. I., additional, Ratkevich, S. S., additional, Semenov, D. A., additional, Tekueva, D. A., additional, Unzhakov, E. V., additional, and Yakimenko, S. P., additional

Published
2015
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42. Geo-neutrinos and Borexino

Author

Ludhova, L., primary, Bellini, G., additional, Benziger, J., additional, Bick, D., additional, Bonfini, G., additional, Bravo, D., additional, Caccianiga, B., additional, Calaprice, F., additional, Caminata, A., additional, Cavalcante, P., additional, Chavarria, A., additional, Chepurnov, A., additional, D’Angelo, D., additional, Davini, S., additional, Derbin, A., additional, Empl, A., additional, Etenko, A., additional, Fomenko, K., additional, Franco, D., additional, Fiorentini, G., additional, Galbiati, C., additional, Gazzana, S., additional, Ghiano, C., additional, Giammarchi, M., additional, Göger-Neff, M., additional, Goretti, A., additional, Hagner, C., additional, Hungerford, E., additional, Ianni, Aldo, additional, Ianni, Andrea, additional, Kobychev, V., additional, Korablev, D., additional, Korga, G., additional, Kryn, D., additional, Laubenstein, M., additional, Lehnert, B., additional, Lewke, T., additional, Litvinovich, E., additional, Lombardi, F., additional, Lombardi, P., additional, Lukyanchenko, G., additional, Machulin, I., additional, Manecki, S., additional, Maneschg, W., additional, Mantovani, F., additional, Marcocci, S., additional, Meindl, Q., additional, Meroni, E., additional, Meyer, M., additional, Miramonti, L., additional, Misiaszek, M., additional, Mosteiro, P., additional, Muratova, V., additional, Oberauer, L., additional, Obolensky, M., additional, Ortica, F., additional, Otis, K., additional, Pallavicini, M., additional, Papp, L., additional, Perasso, L., additional, Pocar, A., additional, Ranucci, G., additional, Razeto, A., additional, Re, A., additional, Ricci, B., additional, Romani, A., additional, Rossi, N., additional, Saldanha, R., additional, Salvo, C., additional, Schönert, S., additional, Simgen, H., additional, Skorokhvatov, M., additional, Smirnov, O., additional, Sotnikov, A., additional, Sukhotin, S., additional, Suvorov, Y., additional, Tartaglia, R., additional, Testera, G., additional, Vignaud, D., additional, Vogelaar, R. B., additional, von Feilitzsch, F., additional, Wang, H., additional, Winter, J., additional, Wojcik, M., additional, Wright, A., additional, Wurm, M., additional, Zaimidoroga, O., additional, Zavatarelli, S., additional, Zuber, K., additional, and Zuzel, G., additional

Published
2015
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43. First result of the experimental search for the 9.4 keV solar axion reactions with 83Kr in the copper proportional counter

Author

Gavrilyuk, Yu. M., primary, Gangapshev, A. M., additional, Derbin, A. V., additional, Kazalov, V. V., additional, Kim, H. J., additional, Kim, Y. D., additional, Kobychev, V. V., additional, Kuzminov, V. V., additional, Ali, Luqman, additional, Muratova, V. N., additional, Panasenko, S. I., additional, Ratkevich, S. S., additional, Semenov, D. A., additional, Tekueva, D. A., additional, Yakimenko, S. P., additional, and Unzhakov, E. V., additional

Published
2015
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44. Solar neutrino with Borexino: Results and perspectives

Author

Smirnov, O., primary, Bellini, G., additional, Benziger, J., additional, Bick, D., additional, Bonfini, G., additional, Bravo, D., additional, Caccianiga, B., additional, Calaprice, F., additional, Caminata, A., additional, Cavalcante, P., additional, Chavarria, A., additional, Chepurnov, A., additional, D’Angelo, D., additional, Davini, S., additional, Derbin, A., additional, Empl, A., additional, Etenko, A., additional, Fomenko, K., additional, Franco, D., additional, Fiorentini, G., additional, Galbiati, C., additional, Gazzana, S., additional, Ghiano, C., additional, Giammarchi, M., additional, Göger-Neff, M., additional, Goretti, A., additional, Hagner, C., additional, Hungerford, E., additional, Ianni, Aldo, additional, Ianni, Andrea, additional, Kobychev, V., additional, Korablev, D., additional, Korga, G., additional, Kryn, D., additional, Laubenstein, M., additional, Lehnert, B., additional, Lewke, T., additional, Litvinovich, E., additional, Lombardi, F., additional, Lombardi, P., additional, Ludhova, L., additional, Lukyanchenko, G., additional, Machulin, I., additional, Manecki, S., additional, Maneschg, W., additional, Mantovani, F., additional, Marcocci, S., additional, Meindl, Q., additional, Meroni, E., additional, Meyer, M., additional, Miramonti, L., additional, Misiaszek, M., additional, Mosteiro, P., additional, Muratova, V., additional, Oberauer, L., additional, Obolensky, M., additional, Ortica, F., additional, Otis, K., additional, Pallavicini, M., additional, Papp, L., additional, Perasso, L., additional, Pocar, A., additional, Ranucci, G., additional, Razeto, A., additional, Re, A., additional, Ricci, B., additional, Romani, A., additional, Rossi, N., additional, Saldanha, R., additional, Salvo, C., additional, Schönert, S., additional, Simgen, H., additional, Skorokhvatov, M., additional, Sotnikov, A., additional, Sukhotin, S., additional, Suvorov, Y., additional, Tartaglia, R., additional, Testera, G., additional, Vignaud, D., additional, Vogelaar, R. B., additional, von Feilitzsch, F., additional, Wang, H., additional, Winter, J., additional, Wojcik, M., additional, Wright, A., additional, Wurm, M., additional, Zaimidoroga, O., additional, Zavatarelli, S., additional, Zuber, K., additional, and Zuzel, G., additional

Published
2015
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