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14 results on '"Rukhadze, N. I."'

1. Improved limits on $\beta^+$EC and ECEC processes in $^{74}$Se

Author

Barabash, A. S., Brudanin, V. B., Klimenko, A. A., Konovalov, S. I., Rakhimov, A. V., Rukhadze, E. N., Rukhadze, N. I., Shitov, Yu. A., Stekl, I., Warot, G., and Umatov, V. I.

Subjects
Nuclear Experiment
Abstract

New limits on $\beta^+$EC and ECEC processes in $^{74}$Se have been obtained using a 600 cm$^3$ HPGe detector and an external source consisting of 1600 g of a natural selenium powder. For different $\beta^+$EC and ECEC transitions (to the ground and excited states) obtained limits are on the level $\sim (0.2-4.8)\times10^{19}$ yr at 90\% C.L. In particular, for the potentially resonant transition into the 1204.2 keV excited state of $^{74}$Ge a lower half-life limit of $1.1\times10^{19}$ yr at 90\% C.L. has been obtained. Possibility to increase the sensitivity of such measurements is discussed., Comment: 16 pages, 3 figures. arXiv admin note: text overlap with arXiv:hep-ex/0610046

Published
2020
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2. Final results on $^\textbf{82}$Se double beta decay to the ground state of $^\textbf{82}$Kr from the NEMO-3 experiment

Author

Collaboration, NEMO-3, Arnold, R., Augier, C., Barabash, A. S., Basharina-Freshville, A., Blondel, S., Blot, S., Bongrand, M., Boursette, D., Brudanin, V., Busto, J., Caffrey, A. J., Calvez, S., Cascella, M., Cerna, C., Cesar, J. P., Chapon, A., Chauveau, E., Chopra, A., Dawson, L., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., Gómez, H., Guillon, B., Guzowski, P., Hodák, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lemière, Y., Noblet, T. Le, Liptak, Z., Liu, X. R., Loaiza, P., Lutter, G., Macolino, C., Mamedov, F., Marquet, C., Mauger, F., Morgan, B., Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Patrick, C., Perrot, F., Piquemal, F., Povinec, P., Přidal, P., Ramachers, Y. A., Remoto, A., Reyss, J. L., Riddle, C. L., Rukhadze, E., Rukhadze, N. I., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., Šimkovic, F., Smetana, A., Smolek, K., Smolnikov, A., Söldner-Rembold, S., Soulé, B., Štekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Xie, F., and Žukauskas, A.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Using data from the NEMO-3 experiment, we have measured the two-neutrino double beta decay ($2\nu\beta\beta$) half-life of $^{82}$Se as $T_{1/2}^{2\nu} = \left[ 9.39 \pm 0.17\,\left(\mbox{stat}\right) \pm 0.58\,\left(\mbox{syst}\right)\right] \times 10^{19}$ y under the single-state dominance hypothesis for this nuclear transition. The corresponding nuclear matrix element is $\left|M^{2\nu}\right| = 0.0498 \pm 0.0016$. In addition, a search for neutrinoless double beta decay ($0\nu\beta\beta$) using 0.93 kg of $^{82}$Se observed for a total of 5.25 y has been conducted and no evidence for a signal has been found. The resulting half-life limit of $T_{1/2}^{0\nu} > 2.5 \times 10^{23} \,\mbox{y} \,(90\%\,\mbox{C.L.})$ for the light neutrino exchange mechanism leads to a constraint on the effective Majorana neutrino mass of $\langle m_{\nu} \rangle < \left(1.2 - 3.0\right) \,\mbox{eV}$, where the range reflects $0\nu\beta\beta$ nuclear matrix element values from different calculations. Furthermore, constraints on lepton number violating parameters for other $0\nu\beta\beta$ mechanisms, such as right-handed currents, majoron emission and R-parity violating supersymmetry modes have been set., Comment: 14 pages, 10 figures

Published
2018

3. Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of $^{48}{\rm Ca}$ with the NEMO-3 detector

Author

Collaboration, NEMO-3, Arnold, R., Augier, C., Bakalyarov, A. M., Baker, J. D., Barabash, A. S., Basharina-Freshville, A., Blondel, S., Blot, S., Bongrand, M., Brudanin, V., Busto, J., Caffrey, A. J., Calvez, S., Cascella, M., Cerna, C., Cesar, J. P., Chapon, A., Chauveau, E., Chopra, A., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., Gómez, H., Guillon, B., Guzowski, P., Hodák, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lebedev, V. I., Lemière, Y., Noblet, T. Le, Liptak, Z., Liu, X. R., Loaiza, P., Lutter, G., Mamedov, F., Marquet, C., Mauger, F., Morgan, B., Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Perrot, F., Piquemal, F., Povinec, P., Přidal, P., Ramachers, Y. A., Remoto, A., Reyss, J. L., Richards, B., Riddle, C. L., Rukhadze, E., Rukhadze, N. I., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., Šimkovic, F., Smetana, A., Smolek, K., Smolnikov, A., Söldner-Rembold, S., Soulé, B., Štekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Zhukov, S. V., and Žukauskas, A.

Subjects
High Energy Physics - Experiment, Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract

The NEMO-3 experiment at the Modane Underground Laboratory has investigated the double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr of data recorded with a $6.99\,{\rm g}$ sample of $^{48}{\rm Ca}$, approximately $150$ double-$\beta$ decay candidate events have been selected with a signal-to-background ratio greater than $3$. The half-life for the two-neutrino double-$\beta$ decay of $^{48}{\rm Ca}$ has been measured to be $T^{2\nu}_{1/2}\,=\,[6.4\, ^{+0.7}_{-0.6}{\rm (stat.)} \, ^{+1.2}_{-0.9}{\rm (syst.)}] \times 10^{19}\,{\rm yr}$. A search for neutrinoless double-$\beta$ decay of $^{48}{\rm Ca}$ yields a null result and a corresponding lower limit on the half-life is found to be $T^{0\nu}_{1/2} > 2.0 \times 10^{22}\,{\rm yr}$ at $90\%$ confidence level, translating into an upper limit on the effective Majorana neutrino mass of $< m_{\beta\beta} > < 6.0 - 26$ ${\rm eV}$, with the range reflecting different nuclear matrix element calculations. Limits are also set on models involving Majoron emission and right-handed currents., Comment: 8 pages, 5 figures, 3 tables. Final journal version after peer review

Published
2016
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4. Final results on 82Se82Kr double beta decay to the ground state of 82Se82Kr from the NEMO-3 experiment

Author

Arnold, R., Augier, C., Barabash, A. S., Basharina-Freshville, A., Blondel, S., Blot, S., Bongrand, M., Boursette, D., Brudanin, V., Busto, J., Caffrey, A. J., Calvez, S., Cascella, M., Cerna, C., Cesar, J. P., Chapon, A., Chauveau, E., Chopra, A., Dawson, L., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., Gómez, H., Guillon, B., Guzowski, P., Hodák, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lemière, Y., Le Noblet, T., Liptak, Z., Liu, X. R., Loaiza, P., Lutter, G., Macolino, C., Mamedov, F., Marquet, C., Mauger, F., Morgan, B., Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Patrick, C., Perrot, F., Piquemal, F., Povinec, P., Přidal, P., Ramachers, Y. A., Remoto, A., Reyss, J. L., Riddle, C. L., Rukhadze, E., Rukhadze, N. I., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., Šimkovic, F., Smetana, A., Smolek, K., Smolnikov, A., Söldner-Rembold, S., Soulé, B., Štekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Xie, F., and Žukauskas, A.

Published
2018
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6. Final results on $^\textbf{82}$Se double beta decay to the ground state of $^\textbf{82}$Kr from the NEMO-3 experiment

Author

3 Collaboration, Arnold, R., Augier, C., Barabash, A. S., Basharina-Freshville, A., Blondel, S., Blot, S., Bongrand, M., Boursette, D., Brudanin, V., Busto, J., Caffrey, A. J., Calvez, S., Cascella, M., Cerna, C., Cesar, J. P., Chapon, A., Chauveau, E., Chopra, A., Dawson, L., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., G��mez, H., Guillon, B., Guzowski, P., Hod��k, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lemi��re, Y., Noblet, T. Le, Liptak, Z., Liu, X. R., Loaiza, P., Lutter, G., Macolino, C., Mamedov, F., Marquet, C., Mauger, F., Morgan, B., Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Patrick, C., Perrot, F., Piquemal, F., Povinec, P., P��idal, P., Ramachers, Y. A., Remoto, A., Reyss, J. L., Riddle, C. L., Rukhadze, E., Rukhadze, N. I., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., ��imkovic, F., Smetana, A., Smolek, K., Smolnikov, A., S��ldner-Rembold, S., Soul��, B., ��tekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Xie, F., and ��ukauskas, A.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract

Using data from the NEMO-3 experiment, we have measured the two-neutrino double beta decay ($2\nu\beta\beta$) half-life of $^{82}$Se as $T_{1/2}^{2\nu} = \left[ 9.39 \pm 0.17\,\left(\mbox{stat}\right) \pm 0.58\,\left(\mbox{syst}\right)\right] \times 10^{19}$ y under the single-state dominance hypothesis for this nuclear transition. The corresponding nuclear matrix element is $\left|M^{2\nu}\right| = 0.0498 \pm 0.0016$. In addition, a search for neutrinoless double beta decay ($0\nu\beta\beta$) using 0.93 kg of $^{82}$Se observed for a total of 5.25 y has been conducted and no evidence for a signal has been found. The resulting half-life limit of $T_{1/2}^{0\nu} > 2.5 \times 10^{23} \,\mbox{y} \,(90\%\,\mbox{C.L.})$ for the light neutrino exchange mechanism leads to a constraint on the effective Majorana neutrino mass of $\langle m_{\nu} \rangle < \left(1.2 - 3.0\right) \,\mbox{eV}$, where the range reflects $0\nu\beta\beta$ nuclear matrix element values from different calculations. Furthermore, constraints on lepton number violating parameters for other $0\nu\beta\beta$ mechanisms, such as right-handed currents, majoron emission and R-parity violating supersymmetry modes have been set., Comment: 14 pages, 10 figures

Published
2018

7. Final results on $${}^\mathbf{82 }{\hbox {Se}}$$ double beta decay to the ground state of $${}^\mathbf{82 }{\hbox {Kr}}$$ from the NEMO-3 experiment

Author

Arnold, R., primary, Augier, C., additional, Barabash, A. S., additional, Basharina-Freshville, A., additional, Blondel, S., additional, Blot, S., additional, Bongrand, M., additional, Boursette, D., additional, Brudanin, V., additional, Busto, J., additional, Caffrey, A. J., additional, Calvez, S., additional, Cascella, M., additional, Cerna, C., additional, Cesar, J. P., additional, Chapon, A., additional, Chauveau, E., additional, Chopra, A., additional, Dawson, L., additional, Duchesneau, D., additional, Durand, D., additional, Egorov, V., additional, Eurin, G., additional, Evans, J. J., additional, Fajt, L., additional, Filosofov, D., additional, Flack, R., additional, Garrido, X., additional, Gómez, H., additional, Guillon, B., additional, Guzowski, P., additional, Hodák, R., additional, Huber, A., additional, Hubert, P., additional, Hugon, C., additional, Jullian, S., additional, Klimenko, A., additional, Kochetov, O., additional, Konovalov, S. I., additional, Kovalenko, V., additional, Lalanne, D., additional, Lang, K., additional, Lemière, Y., additional, Le Noblet, T., additional, Liptak, Z., additional, Liu, X. R., additional, Loaiza, P., additional, Lutter, G., additional, Macolino, C., additional, Mamedov, F., additional, Marquet, C., additional, Mauger, F., additional, Morgan, B., additional, Mott, J., additional, Nemchenok, I., additional, Nomachi, M., additional, Nova, F., additional, Nowacki, F., additional, Ohsumi, H., additional, Pahlka, R. B., additional, Patrick, C., additional, Perrot, F., additional, Piquemal, F., additional, Povinec, P., additional, Přidal, P., additional, Ramachers, Y. A., additional, Remoto, A., additional, Reyss, J. L., additional, Riddle, C. L., additional, Rukhadze, E., additional, Rukhadze, N. I., additional, Saakyan, R., additional, Salazar, R., additional, Sarazin, X., additional, Shitov, Yu., additional, Simard, L., additional, Šimkovic, F., additional, Smetana, A., additional, Smolek, K., additional, Smolnikov, A., additional, Söldner-Rembold, S., additional, Soulé, B., additional, Štekl, I., additional, Suhonen, J., additional, Sutton, C. S., additional, Szklarz, G., additional, Thomas, J., additional, Timkin, V., additional, Torre, S., additional, Tretyak, Vl. I., additional, Tretyak, V. I., additional, Umatov, V. I., additional, Vanushin, I., additional, Vilela, C., additional, Vorobel, V., additional, Waters, D., additional, Xie, F., additional, and Žukauskas, A., additional

Published
2018
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8. Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of Ca48 with the NEMO-3 detector

Author

Arnold, R., Augier, C., Bakalyarov, A. M., Baker, J. D., Barabash, A. S., Basharina-Freshville, A., Blondel, S., Blot, S., Bongrand, M., Brudanin, V., Busto, J., Caffrey, A. J., Calvez, S., Cascella, M., Cerna, C., Cesar, J. P., Chapon, A., Chauveau, E., Chopra, A., Duchesneau, D., Durand, D., Egorov, V., Eurin, G., Evans, J. J., Fajt, L., Filosofov, D., Flack, R., Garrido, X., Gómez, H., Guillon, B., Guzowski, P., Hodák, R., Huber, A., Hubert, P., Hugon, C., Jullian, S., Klimenko, A., Kochetov, O., Konovalov, S. I., Kovalenko, V., Lalanne, D., Lang, K., Lebedev, V. I., Lemière, Y., Le Noblet, T., Liptak, Z., Liu, X. R., Loaiza, P., Lutter, G., Mamedov, F., Marquet, C., Mauger, F., Morgan, B. (Ben), Mott, J., Nemchenok, I., Nomachi, M., Nova, F., Nowacki, F., Ohsumi, H., Pahlka, R. B., Perrot, F., Piquemal, F., Povinec, P., Přidal, P., Ramachers, Y., Remoto, A., Reyss, J. L., Richards, B., Riddle, C. L., Rukhadze, E., Rukhadze, N. I., Saakyan, R., Salazar, R., Sarazin, X., Shitov, Yu., Simard, L., Šimkovic, F., Smetana, A., Smolek, K., Smolnikov, A., Söldner-Rembold, S., Soulé, B., Štekl, I., Suhonen, J., Sutton, C. S., Szklarz, G., Thomas, J., Timkin, V., Torre, S., Tretyak, Vl. I., Tretyak, V. I., Umatov, V. I., Vanushin, I., Vilela, C., Vorobel, V., Waters, D., Zhukov, S. V., Žukauskas, A., and HASH(0x5651ca2a1718)

Subjects
QC
Abstract

The NEMO-3 experiment at the Modane Underground Laboratory investigates the double-beta decay of 48Ca. Using 5.25 yr of data recorded with a 6.99 g sample of 48 Ca, approximately 150 double-beta decay candidate events are selected with a signal-to-background ratio greater than 3. The half-life for the two-neutrino double-beta decay of 48Ca is measured to be T2ν1/2=[6.4+0.7−0.6(stat)+1.2 −0.9(syst)]×1019 yr. A search for neutrinoless double-beta decay of 48Ca yields a null result, and a corresponding lower limit on the half-life is found to be T0ν1/2 >2.0×1022 yr at 90% confidence level, translating into an upper limit on the effective Majorana neutrino mass of ⟨mββ⟩

Published
2016

9. New search for double electron capture of 106Cd with the TGV-2 spectrometer

Author

Briancon, Ch., Brudanin, V. B., Egorov, V. G., Fajt, L., Hodak, R., Jose, J. M., Klimenko, A. A., Kovalik, A., Rozov, S. V., Rukhadze, E. N., Rukhadze, N. I., Salamatin, A. V., Shitov, Yu. A., Simkovic, F., Spavorova, M., Stekl, I., Timkin, V. V., and Yakushev, E. A.

Abstract

Plenary and semiplenary sessions This work was partly supported by RFBR under grant № 14-02-00568.

Published
2014

10. Search for double beta decay of106Cd in the TGV-2 experiment

Author

Rukhadze, N I, primary, Brudanin, V B, additional, Egorov, V G, additional, Klimenko, A A, additional, Kovalik, A, additional, Kouba, P, additional, Piquemal, F, additional, Rozov, S V, additional, Rukhadze, E, additional, Salamatin, A V, additional, Šimkovic, F, additional, Shitov, Yu A, additional, Štekl, I, additional, Timkin, V V, additional, and Yakushev, E A, additional

Published
2016
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11. Experiment TGV-2. Search for double beta decay of106Cd

Author

Rukhadze, N I, primary, Bakalyarov, A M, additional, Briançon, Ch, additional, Brudanin, V B, additional, Čermák, P, additional, Egorov, V G, additional, Klimenko, A A, additional, Kovalik, A, additional, Lebedev, V I, additional, Rukhadze, E N, additional, Mamedov, F, additional, Shitov, Yu A, additional, Šimkovic, F, additional, Štekl, I, additional, Timkin, V V, additional, and Zhukov, S V, additional

Published
2012
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12. Search for double beta decay of106Cd in TGV-2 experiment

Author

Rukhadze, N I, primary, Briançon, Ch, additional, Brudanin, V B, additional, Čermák, P, additional, Egorov, V G, additional, Klimenko, A A, additional, Kovalik, A, additional, Shitov, Yu A, additional, Štekl, I, additional, Timkin, V V, additional, and Vylov, Ts, additional

Published
2010
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13. Experiment TGV II: results on double electron capture in106Cd

Author

Cermak, P, primary, Benes, P, additional, Briançon, C, additional, Brudanin, V B, additional, Egorov, V G, additional, Gusev, K N, additional, Klimenko, A A, additional, Kovalenko, V E, additional, Kovalik, A, additional, Rukhadze, N I, additional, Salamatin, A V, additional, Simkovic, F, additional, Stekl, I, additional, Timkin, V V, additional, and Vylov, T, additional

Published
2008
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