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35 results on '"A. Incicchitti"'

1. Investigation of ββ decay modes in 134Xe and 136Xe

Author

R. Cerulli, R. Bernabei, D. Prosperi, P. Belli, A. Incicchitti, F. Montecchia, C.J. Dai, and F. Cappella

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Xenon, chemistry, chemistry.chemical_element, Scintillator, National laboratory
Abstract

A new investigation of Pp decay modes in Xe-134 and in Xe-136 is presented. The data have been collected deep underground at the Gran Sasso National Laboratory of the INFN over a period of 8823.54 hours with the similar or equal to 6.5 kg DAMA liquid xenon pure scintillator, filled by Kr-free xenon containing 17.1 % of Xe-134 and 68.8% of Xe-136. New limits are set for various decay modes. (C) 2002 Elsevier Science B.V. All rights reserved.

Published
2002
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2. Search for neutrinoless ββ decay in 134Xe

Author

P. Belli, C.J. Dai, R. Cerulli, R. Bernabei, F. Montecchia, F. Cappella, D. Prosperi, and A. Incicchitti

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Xenon, chemistry, Energy spectrum, Analytical chemistry, chemistry.chemical_element, Orders of magnitude (speed), National laboratory
Abstract

New results have been obtained by investigating the neutrinoless ββ decay in 134 Xe deep underground at the Gran Sasso National Laboratory of INFN by means of the ≃6.5 kg liquid xenon setup of the DAMA experiment. New limits on the half-lives of the β − β − 0 ν (0 + →0 + ) and β − β − 0 ν (0 + →2 + ) decay modes have been obtained. They are: T 1/2 >5.8×10 22 yr (90% C.L.) and T 1/2 >2.6×10 22 yr (90% C.L.), respectively. The T 1/2 limit for β − β − 0 ν (0 + →0 + ) process is about three orders of magnitude higher than the one previously available, while the T 1/2 limit for β − β − 0 ν (0 + →2 + ) has been set for the first time.

Published
2002
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3. Search for solar axions by Primakoff effect in NaI crystals

Author

R. Cerulli, F. Montecchia, D. Prosperi, J. M. Ma, R. Bernabei, A. Incicchitti, C.J. Dai, F. Nozzoli, H. L. He, P. Belli, H. H. Kuang, and Stefano Scopel

Subjects
Physics, Nuclear and High Energy Physics, Helioscope, DAMA/LIBRA, Particle physics, Photon, Axions, Bragg scattering, Dark matter, Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Crystal, CERN Axion Solar Telescope, Axion, Primakoff effect
Abstract

The results of a search for possible signal due to Primakoff coherent conversion of solar axions into photons in NaI(Tl) are presented. The experiment has been carried out at the Gran Sasso National Laboratory of INFN; the used statistics is 53437 kg day. The presently most stringent experimental limit on g(a gamma gamma) from this process is obtained: g(a gamma gamma) < 1.7 x 10(-9) GeV-1 (90% C.L.). In particular, the axion mass window m(a) greater than or similar to 0.03 eV, not accessible by other direct methods, is explored and KSVZ axions with mass larger than 4.6 eV are excluded at 90% C.L. (C) 2001 Elsevier Science B.V. All rights reserved.

Published
2001
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4. Search for the nucleon and di-nucleon decay into invisible channels

Author

F. Montecchia, R. Cerulli, V.I. Tretyak, C.J. Dai, V. Yu. Denisov, M. Amato, P. Belli, A. Incicchitti, D. Prosperi, O. A. Ponkratenko, H. H. Kuang, J. M. Ma, H. L. He, Yu.G. Zdesenko, and R. Bernabei

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, CONSERVATION, Settore FIS/01 - Fisica Sperimentale, chemistry.chemical_element, LIFETIME, LIMITS, XENON, SCINTILLATOR, MATTER, MODES, Lower limit, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, Xenon, chemistry, Energy spectrum, Nucleon, National laboratory, Bar (unit)
Abstract

Data collected deep underground at the Gran Sasso National Laboratory of INFN by using the similar or equal to 6.5 kg DAMA liquid Xenon scintillator have been analysed to search for nucleon and di-nucleon decays into invisible channels (decay to nu (i) )over bar>(i) or to nu (i) )over bar>(i)nu (i) or to 5 nu (i), etc., with i = e, mu, tau) or disappearance. The considered statistics has been 2257.7 kg x day. The new obtained limits are: tau (p) = 1.9 x 10(24) yr, tau (nn), = 1.2 x 10(25) yr and tau (pp) = 5.5 X 10(23) yr at 90% C.L. The latter values are the same or better than those previously established by the Frejus Collaboration; in particular, the limits for the NN decay into nu (tau) )over bar>(tau) are set for the first time. (C) 2000 Elsevier Science B.V. All rights reserved.

Published
2000
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5. On a further search for a yearly modulation of the rate in particle Dark Matter direct search

Author

F. Montecchia, P. Belli, C. J. Dai, G. Ignesti, R. Bernabei, H.H. Kuang, A. Incicchitti, L. K. Ding, W. Di Nicolantonio, J. M. Ma, and D. Prosperi

Subjects
Physics, Nuclear and High Energy Physics, DAMA/LIBRA, Settore FIS/01 - Fisica Sperimentale, Dark matter, Maximum likelihood analysis, Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare, WIMP, DAMA/NaI, Modulation (music), Statistics, Energy spectrum, Direct search, Particle Physics - Experiment
Abstract

The results achieved with a statistics of 14962 kg . day, collected with the large mass highly radiopure DAMA NaI(TI) set-up, are described and investigated in terms of WIMP annual modulation signature. A maximum likelihood analysis of these data, combined with the statistics of 4549 kg day previously published (total statistics of 19511 kg . day), favours the hypothesis of presence of an annual modulation at 99.6% C.L. (C) 1999 Elsevier Science B.V. All rights reserved.

Published
1999
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6. New limits on particle dark matter search with a liquid Xenon target-scintillator

Author

F. Montecchia, Mario Pillon, Maurizio Angelone, P. Belli, P. Batistoni, C. J. Dai, R. Bernabei, A. Incicchitti, and D. Prosperi

Subjects
Quenching, Elastic scattering, Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Settore FIS/01 - Fisica Sperimentale, Dark matter, GRAN-SASSO, chemistry.chemical_element, Scintillator, NUCLEUS SCATTERING, WIMPS, Settore FIS/04 - Fisica Nucleare e Subnucleare, Pulse (physics), Nuclear physics, Xenon, chemistry, DISCRIMINATION, Particle, FRASCATI NEUTRON GENERATOR, Neutron, DETECTOR
Abstract

New results on WIMP-Xe-129 elastic scattering are presented. The target-detector is a pure liquid Xenon scintillator filled with Kr-free Xenon enriched in Xe-129 at 99.5%. Preliminary measurements with neutrons to estimate the quenching factor and to study a statistical pulse shape discrimination between electromagnetic background and recoils are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

Published
1998
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7. Search for non-paulian transitions in 23Na and 127I

Author

R. Bernabei, W. Di Nicolantonio, P. Belli, D. Prosperi, A. Incicchitti, H.H. Kuang, C. Bacci, J. M. Ma, M. C. De Sanctis, L. K. Ding, F. Montecchia, and C. J. Dai

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, symbols.namesake, DAMA/LIBRA, Pauli exclusion principle, DAMA/NaI, symbols, Spontaneous emission, Limit (mathematics), Relative strength, National laboratory
Abstract

A new search of non-paulian nuclear processes, i.e. processes normally forbidden by the Pauli exclusion principle, was carried out by determining an improved upper limit for the spontaneous emission rate of protons in 23 Na and 127 I. A large set-up of highly radiopure NaI(Tl) crystals was employed; it was placed deeply underground at the Gran Sasso National Laboratory of I.N.F.N. The upper limit on the unit time probability of non-paulian emission of protons with energy E p ⩾ 10 MeV is λ ⩽ 4.6 · 10 −33 s −1 . The corresponding limit on the relative strength ( δ 2 ) for the searched non-paulian transitions has been estimated to be δ 2 ≲ 1.0 · 10 −54 .

Published
1997
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8. New limits on WIMP search with large-mass low-radioactivity NaI(Tl) set-up at Gran Sasso

Author

R. Bernabei, D. Prosperi, F. Montecchia, P. Bastistoni, A. Incicchitti, C. Bacci, C. J. Dai, P. Belli, Nicolantonio W. Di, H.H. Kuang, L K Ding, Mario Pillon, Maurizio Angelone, J. M. Ma, and Valeria Landoni

Subjects
Set (abstract data type), Physics, Nuclear physics, Nuclear and High Energy Physics, DAMA/LIBRA, Theoretical physics, WIMP, DAMA/NaI, Settore FIS/01 - Fisica Sperimentale, Dark matter, Pulse shape analysis, National laboratory, Settore FIS/04 - Fisica Nucleare e Subnucleare
Abstract

Improved limits on WIMP search have been obtained by the pulse shape analysis of the data collected with a large-mass low-radioactivity NaI(Tl) set-up at Gran Sasso National Laboratory.

Published
1996
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9. Search for neutralino dark matter with NaI detectors

Author

Dai Changjiang, J. Mallet, R. Marcovaldi, R. Bernabei, Stefano Scopel, E. Gaillard, Kuang Hao-Huai, C. Bacci, Nicolao Fornengo, D. Prosperi, Xie Yigang, V. de Alfaro, P. Belli, L. Mosca, Ding Linkai, A. Incicchitti, A. Bottino, G. Gerbier, G. Mignola, and Charling Tao

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Dark Matter, MSSM, Physics::Instrumentation and Detectors, Settore FIS/01 - Fisica Sperimentale, High Energy Physics::Phenomenology, Detector, Dark matter, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Supersymmetry, Recoil energy, Settore FIS/04 - Fisica Nucleare e Subnucleare, Standard Model, Neutralino, High Energy Physics::Experiment, Direct search
Abstract

Theoretical predictions for neutralino dark matter in the framework of the minimal SUSY standard model are compared with recent results of a direct search for dark matter with NaI detectors. Perspectives for a future investigation by this kind of detectors are also discussed.

Published
1992
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11. Search for 2β processes in 64Zn with the help of ZnWO4 crystal scintillator

Author

Belli, P., primary, Bernabei, R., additional, Cappella, F., additional, Cerulli, R., additional, Dai, C.J., additional, Danevich, F.A., additional, Grinyov, B.V., additional, Incicchitti, A., additional, Kobychev, V.V., additional, Nagornaya, L.L., additional, Nagorny, S.S., additional, Nozzoli, F., additional, Poda, D.V., additional, Prosperi, D., additional, Tretyak, V.I., additional, and Yurchenko, S.S., additional

Published
2008
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13. Search for neutrinoless ββ decay in 134Xe

Author

Bernabei, R., primary, Belli, P., additional, Cappella, F., additional, Cerulli, R., additional, Montecchia, F., additional, Incicchitti, A., additional, Prosperi, D., additional, and Dai, C.J., additional

Published
2002
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14. Search for solar axions by Primakoff effect in NaI crystals

Author

Bernabei, R., primary, Belli, P., additional, Cerulli, R., additional, Montecchia, F., additional, Nozzoli, F., additional, Incicchitti, A., additional, Prosperi, D., additional, Dai, C.J., additional, He, H.L., additional, Kuang, H.H., additional, Ma, J.M., additional, and Scopel, S., additional

Published
2001
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16. Search for the nucleon and di-nucleon decay into invisible channels

Author

Bernabei, R., primary, Amato, M., additional, Belli, P., additional, Cerulli, R., additional, Dai, C.J., additional, Denisov, V.Yu., additional, He, H.L., additional, Incicchitti, A., additional, Kuang, H.H., additional, Ma, J.M., additional, Montecchia, F., additional, Ponkratenko, O.A., additional, Prosperi, D., additional, Tretyak, V.I., additional, and Zdesenko, Yu.G., additional

Published
2000
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22. Searching for WIMPs by the annual modulation signature

Author

Bernabei, R, primary, Belli, P, additional, Montecchia, F, additional, Di Nicolantonio, W, additional, Incicchitti, A, additional, Prosperi, D, additional, Bacci, C, additional, Dai, C.J, additional, Ding, L.K, additional, Kuang, H.H, additional, and Ma, J.M, additional

Published
1998
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23. Search for non-paulian transitions in 23Na and 127I

Author

Bernabei, R., primary, Belli, P., additional, Montecchia, F., additional, De Sanctis, M., additional, Di Nicolantonio, W., additional, Incicchitti, A., additional, Prosperi, D., additional, Bacci, C., additional, Dai, C.J., additional, Ding, L.K., additional, Kuang, H.H., additional, and Ma, J.M., additional

Published
1997
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25. New limits on WIMP search with large-mass low-radioactivity NaI(Tl) set-up at Gran Sasso

Author

Bernabei, R., primary, Belli, P., additional, Landoni, V., additional, Montecchia, F., additional, Di, Nicolantonio W., additional, Incicchitti, A., additional, Prosperi, D., additional, Bacci, C., additional, C.J., Dai, additional, L.K., Ding, additional, Kuang, H.H., additional, Ma, J.M., additional, Angelone, M., additional, Bastistoni, P., additional, and Pillon, M., additional

Published
1996
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28. Search for neutralino dark matter with NaI detectors

Author

Bottino, A., primary, de Alfaro, V., additional, Fornengo, N., additional, Mignola, G., additional, Scopel, S., additional, Bacci, C., additional, Belli, P., additional, Bernabei, R., additional, Changjiang, Dai, additional, Linkai, Ding, additional, Gaillard, E., additional, Gerbier, G., additional, Haohuai, Kuang, additional, Incicchitti, A., additional, Mallet, J., additional, Marcovaldi, R., additional, Mosca, L., additional, Prosperi, D., additional, Tao, C., additional, and Yigang, Xie, additional

Published
1992
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29. WIMPs search with low activity NaI crystals. Preliminary results

Author

Bacci, C., primary, Belli, P., additional, Bernabei, R., additional, Changjiang, Dai, additional, Linkai, Ding, additional, Gaillard, E., additional, Gerbier, G., additional, Haohuai, Kuang, additional, Incicchitti, A., additional, Mallet, J., additional, Marcovaldi, R., additional, Mosca, L., additional, Prosperi, D., additional, Tao, C., additional, and Yigang, Xie, additional

Published
1992
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33. Search for 7Li solar axions using resonant absorption in LiF crystal: Final results

Author

Belli, P., Bernabei, R., Cappella, F., Cerulli, R., Danevich, F.A., dʼAngelo, A., Incicchitti, A., Kobychev, V.V., Laubenstein, M., Polischuk, O.G., and Tretyak, V.I.

Subjects
*AXIONS, *LITHIUM fluoride, *SOLAR radiation, *ABSORPTION, *NUCLEAR excitation, *DATA analysis, *NUCLEAR counters
Abstract

Abstract: The resonance excitation of the 7Li nuclei in a LiF crystal with mass of 553 g by hypothetical axions emitted in the deexcitation of the 7Li nuclei in the Sun was searched for deep underground at the Gran Sasso National Laboratories (LNGS) of INFN (3600 m w.e.). The data collected with a low background HP Ge detector 244 cm3 during 4044h have allowed us to set the limit on the axion mass: (90% C.L.) which is the best one for the 7Li solar axions to-date. [Copyright &y& Elsevier]

Published
2012
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34. Search for 2β processes in 64Zn with the help of ZnWO4 crystal scintillator

Author

Belli, P., Bernabei, R., Cappella, F., Cerulli, R., Dai, C.J., Danevich, F.A., Grinyov, B.V., Incicchitti, A., Kobychev, V.V., Nagornaya, L.L., Nagorny, S.S., Nozzoli, F., Poda, D.V., Prosperi, D., Tretyak, V.I., and Yurchenko, S.S.

Subjects
*RADIOACTIVE decay, *CRYSTALS, *SCINTILLATORS, *MATHEMATICAL physics
Abstract

Abstract: Double beta processes in 64Zn were searched for with the help of a low background ZnWO4 crystal scintillator (mass of 117 g) at the Gran Sasso National Laboratories of the INFN. Total time of measurements was 1902 h. New improved half-life limits on different modes of double electron capture and electron capture with positron emission were established as: , , , , and , all at 90% C.L. [Copyright &y& Elsevier]

Published
2008
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35. Investigation of <f>ββ</f> decay modes in 134Xe and 136Xe

Author

Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Montecchia, F., Incicchitti, A., Prosperi, D., and Dai, C.J.

Subjects
*BETA decay, *SCINTILLATORS
Abstract

A new investigation of ββ decay modes in 134Xe and in 136Xe is presented. The data have been collected deep underground at the Gran Sasso National Laboratory of the INFN over a period of 8823.54 hours with the ≃ 6.5 kg DAMA liquid xenon pure scintillator, filled by Kr-free xenon containing 17.1% of 134Xe and 68.8% of 136Xe. New limits are set for various decay modes. [Copyright &y& Elsevier]

Published
2002
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