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177 results on '"Cappella F."'

1. Recent Results from DAMA/LIBRA and Comparisons

Author

Bernabei, R., Belli, P., Bussolotti, A., Caracciolo, V., Cerulli, R., Ferrari, N., Leoncini, A., Merlo, V., Montecchia, F., Cappella, F., d’Angelo, A., Incicchitti, A., Mattei, A., Dai, C. J., Ma, X. H., Sheng, X. D., and Ye, Z. P.

Published
2022
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3. Further results from DAMA/LIBRA-phase2 and perspectives

Author

Bernabei, R, Belli, P, Bussolotti, A, Caracciolo, V, Cappella, F, Cerulli, R, Dai, Cj, D’Angelo, A, Ferrari, N, Incicchitti, A, Leoncini, A, X. H., M, Mattei, A, Merlo, V, Montecchia, F, Sheng, Xd, and Z. P., Y

Subjects
Dark Matter, elementary particle processes, scintillation detectors, Nuclear and High Energy Physics, scintillation detectors, Settore FIS/04, Dark Matter, elementary particle processes
Abstract

The data collected by the DAMA/LIBRA-phase2 set-up during two additional annual cycles have been analyzed, further investigating the long-standing model-independent annual modulation effect pointed out by DAMA deep underground at the Gran Sasso National Laboratory of the I.N.F.N. by using various different experimental configurations. Including the new results, the total exposure of DAMA/LIBRA-phase2 over 8 annual cycles is 1.53 t·yr and the evidence for a signal that meets all the requirements of the model-independent Dark Matter annual modulation signature is 11.8 σ C.L. in the energy region (1 - 6) keV. In the (2 - 6) keV energy interval, where data are also available from DAMA/NaI and DAMA/LIBRA-phase1, the achieved C.L. for the full exposure of 2.86 t·yr is 13.7 σ. No systematics or side reaction able to mimic this signature (i.e., to account for the whole measured modulation amplitude and to simultaneously satisfy all the requirements of the signature) has been found or suggested by anyone throughout some decades thus far. A preliminary result on the further lowering of the software energy threshold and perspectives are also mentioned.

Published
2021
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4. First DAMA/LIBRA Results and Beyond

Author

Bernabei, R., Belli, P., Montecchia, F., Nozzoli, F., Cappella, F., d'Angelo, A., Incicchitti, A., Prosperi, D., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, J. M., Sheng, X. D., Ye, Z. P., Begun, Viktor, editor, Jenkovszky, László L., editor, and Polański, Aleksander, editor

Published
2009
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5. From DAMA/NaI to DAMA/LIBRA at LNGS

Author

Bernabei, R., Belli, P., Montecchia1, F., Nozzoli, F., Cappella, F., d’Angelo, A., Incicchitti, A., Prosperi, D., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, J. M., Ye, Z. P., Fülöp, Zsolt, editor, Gyürky, György, editor, and Somorjai, Endre, editor

Published
2006
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7. DAMA/LIBRA and Beyond

Author

Bernabei, R., Belli, P., Cappella, F., Montecchia, F., Nozzoli, F., d’Angelo, A., Incicchitti, A., Prosperi, D., Cerulli, R., Dai, C.J., Kuang, H.H., Ma, J.M., Ye, Z.P., Klapdor-Kleingrothaus, Hans Volker, editor, and Arnowitt, Richard, editor

Published
2006
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9. Exploring coherent elastic neutrino-nucleus scattering of reactor neutrinos with the NUCLEUS experiment

Author

The NUCLEUS Collaboration, Goupy, C., Abele, H., Angloher, G., Bento, A., Canonica, L., Cappella, F., Cardani, L., Casali, N., Cerulli, R., Colantoni, I., Cruciani, A., Del Castello, G., Roccagiovine, M. del Gallo, Doblhammer, A., Dorer, S., Erhart, A., Friendl, M., Garai, A., Ghete, V. M., Hauff, D., Jeanneau, F., Jericha, E., Kaznacheeva, M., Kinast, A., Kluck, H., Langenkämper, A., Lasserre, T., Lhuillier, D., Mancuso, M., Mauri, B., Mazzolari, A., Mazzucato, E., Neyrial, H., Nones, C., Oberauer, L., Ortmann, T., Pattavina, L., Peters, L., Petricca, F., Potzel, W., Pröbst, F., Pucci, F., Riendl, F., Rogly, R., Romagnoni, M., Rothe, J., Schermer, N., Schieck, J., Schönert, S., Schwertner, C., Scola, L., Sidikov, G. Soum, Stodolsky, L., Strauss, R., Tamisari, M., Tomei, C., Vignati, M., Vivier, M., Wagner, V., Wex, A., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Département de Physique des Particules (ex SPP) (DPhP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, NUCLEUS, and HEP, INSPIRE

Subjects
Physics - Instrumentation and Detectors, new physics, background, scattering, nucleus, FOS: Physical sciences, temperature, Instrumentation and Detectors (physics.ins-det), dark matter, coherence, neutrino, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], cryogenics, calorimeter, nuclear reactor, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], neutrino nucleus
Abstract

The NUCLEUS experiment aims to perform a high-precision measurement of Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) at the EdF Chooz B nuclear power plant in France. CEvNS is a unique process to study neutrino properties and to search for physics beyond the Standard Model. The study of CEvNS is also important for light Dark-Matter searches. It could be a possible irreducible background for high-sensitivity Dark-Matter searches. NUCLEUS is an experiment under construction based on ultra-low threshold (20 eVnr) cryogenic calorimeters, operated at tens-of-mK temperatures., Procceding for 14th International Conference on Identification of Dark Matter Vienna, Austria, 18-22 July 2022 - Submitted to SciPost

Published
2022

10. Observation of a nuclear recoil peak at the 100 eV scale induced by neutron capture

Author

CRAB Collaboration, NUCLEUS Collaboration, Abele, H., Angloher, G., Bento, A., Canonica, L., Cappella, F., Cardani, L., Casali, N., Cerulli, R., Chalil, A., Chebboubi, A., Colantoni, I., Crocombette, J. -P., Cruciani, A., Del Castello, G., Roccagiovine, M. del Gallo, Desforge, D., Doblhammer, A., Dumonteil, E., Dorer, S., Erhart, A., Fuss, A., Friedl, M., Garai, A., Ghete, V. M., Giuliani, A., Goupy, C., Gunsing, F., Hauff, D., Jeanneau, F., Jericha, E., Kaznacheeva, M., Kinast, A., Kluck, H., Langenkämper, A., Lasserre, T., Letourneau, A., Lhuillier, D., Litaize, O., Mancuso, M., de Marcillac, P., Marnieros, S., Materna, T., Mauri, B., Mazzolari, A., Mazzucato, E., Neyrial, H., Nones, C., Oberauer, L., Ortmann, T., Ouzriat, A., Pattavina, L., Peters, L., Petricca, F., Poda, D. V., Potzel, W., Pröbst, F., Reindl, F., Rogly, R., Romagnoni, M., Rothe, J., Schermer, N., Schieck, J., Schönert, S., Schwertner, C., Scola, L., Serot, O., Soum-Sidikov, G., Stodolsky, L., Strauss, R., Tamisari, M., Thulliez, L., Tomei, C., Vignati, M., Vivier, M., Wagner, V., Wex, A., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CEA Cadarache, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), CRAB, and NUCLEUS

Subjects
Physics - Instrumentation and Detectors, detector, nucleus, scattering, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], calibration, dark matter, coherence, cryogenics, recoil, structure, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), capture, Nuclear Experiment, neutrino nucleus
Abstract

International audience; Coherent elastic neutrino-nucleus scattering and low-mass Dark Matter detectors rely crucially on the understanding of their response to nuclear recoils. We report the first observation of a nuclear recoil peak at around 112 eV induced by neutron capture. The measurement was performed with a CaWO$_4$ cryogenic detector from the NUCLEUS experiment exposed to a $^{252}$Cf source placed in a compact moderator. The measured spectrum is found in agreement with simulations and the expected peak structure from the single-$\gamma$ de-excitation of $^{183}$W is identified with 3 $\sigma$ significance. This result demonstrates a new method for precise, in-situ, and non-intrusive calibration of low-threshold experiments.

Published
2022
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11. Development of ZnWO4 crystal scintillators for rare events search.

Author

Belli, P., Bernabei, R., Caracciolo, V., Cerulli, R., Leoncini, A., Merlo, V., Borovlev, Yu. A., Shlegel, V. N., Tkachev, D. S., Tkachev, S. V., Cappella, F., Incicchitti, A., Cherubini, N., Piccinelli, E., Danevich, F. A., Kasperovych, D. V., Polischuk, O. G., Tretyak, V. I., and Zhdankov, V. N.

Subjects
SCINTILLATORS, ALPHA decay, DARK matter, CRYSTALS, OPTICAL properties, RADIOCHEMICAL purification
Abstract

The ZnWO4 crystal scintillator is a promising detector for low counting experiments thanks to the high level of radiopurity and reasonably high optical and scintillation properties. In particular, ZnWO4 scintillators can be utilized in the searches for double beta processes, in the investigation of rare alpha decays and Dark Matter. In fact, one of its main characteristics is to be an anisotropic detector. In the case of interaction of heavy particles or nuclear recoils, the light output and the time profile of the scintillation pulse depend on the direction of the particles with respect to the crystal axes; no difference is observed for γ / β radiation. These anisotropic features can offer a unique possibility to exploit the so-called directionality approach in order to investigate the presence of the Dark Matter candidates which induces nuclear recoils. In fact, their use can overcome the difficulty of detecting extremely short nuclear recoil traces. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Annual modulation results from DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Caracciolo, V., Cerulli, R., Di Marco, A., Leoncini, A., Merlo, V., Montecchia, F., Cappella, F., d'Angelo, A., Incicchitti, A., Dai, C. J., Ma, X. H., Sheng, X. D., and Ye, Z. P.

Subjects
SCINTILLATORS, GALACTIC halos, DARK matter, AMPLITUDE modulation, THRESHOLD energy, GOVERNMENT laboratories
Abstract

DAMA/LIBRA is an experiment investigating the presence of Dark Matter particles in the Galactic halo. The target detectors are ultra-radiopure NaI(Tl) crystal scintillators. They are placed inside a low-background set-up at the underground Gran Sasso National Laboratory (LNGS) of the I.N.F.N.. DAMA/LIBRA has been in operation in two phases by pursuing the annual modulation as signature to point-out in a model-independent way the presence and the features of the Dark Matter (DM) signal in the counting rate. In its second phase of measurement, DAMA/LIBRA–phase2, it has been working with a lower software energy threshold with respect to DAMA/LIBRA–phase1. DAMA/LIBRA–phase2 confirms the evidence of a signal that meets all the requirements of the model independent Dark Matter annual modulation signature, at 11.8 σ C.L. in the energy region (1–6) keV. In the energy region (2–6) keV, where data are also available from DAMA/NaI and DAMA/LIBRA–phase1, the achieved C.L. for the full exposure (2.86 ton × yr, 22 annual cycles) is 13.7 σ ; the modulation amplitude of the single-hit scintillation events is: (0. 0 1 0 1 4 ± 0. 0 0 0 7 4) cpd/kg/keV, and the measured period and phase are well in agreement with those expected for DM particles. Detailed studies have excluded that the observed modulation is due to systematics or side reaction. In this proceedings the results achieved so far by the DAMA/LIBRA experiment and the new ones corresponding to two new annual cycles of data will be presented. Future perspectives of the experiment will be addressed. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Results from DAMA/LIBRA at Gran Sasso

Author

Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C. J., d’Angelo, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Nozzoli, F., Prosperi, D., Sheng, X. D., and Ye, Z. P.

Published
2010
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15. Dark matter investigation with DAMA set-ups.

Author

Bernabei, R., Belli, P., Caracciolo, V., Cerulli, R., Di Marco, A., Merlo, V., Cappella, F., d'Angelo, A., Incicchitti, A., Dai, C. J., Ma, X. H., Sheng, X. D., Montecchia, F., and Ye, Z. P.

Subjects
DARK matter, GOVERNMENT laboratories, GALACTIC halos
Abstract

Experimental observations and theoretical arguments at Galaxy and larger scales suggested that a large fraction of the universe is composed by Dark Matter particles. This motivated the DAMA experimental efforts to investigate the presence of such particles in the galactic halo by exploiting a model-independent signature and very highly radiopure set-ups deep underground. Here, a review of the model-independent positive results, obtained by the DAMA set-ups at the Gran Sasso National Laboratory of the INFN, and some of the implications will be given. [ABSTRACT FROM AUTHOR]

Published
2022
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16. The ADAMO project for the dark matter directionality approach.

Author

Belli, P., Bernabei, R., Caracciolo, V., Cerulli, R., Merlo, V., Cappella, F., Incicchitti, A., Cherubini, N., Piccinelli, E., Danevich, F. A., Kasperovych, D. V., Polischuk, O. G., and Tretyak, V. I.

Subjects
DARK matter, NEUTRON counters, SMALL-angle neutron scattering, PARTICLE tracks (Nuclear physics), NEUTRON scattering, NEUTRON generators, NUCLEAR energy, SCINTILLATORS
Abstract

Anisotropic scintillators can offer a unique possibility to exploit the so-called directionality approach to investigate the presence of those Dark Matter (DM) candidates inducing nuclear recoils. Their use can overcome the difficulty of detecting extremely short nuclear recoil tracks. In this paper, we present recent measurements performed on the anisotropic response of a ZnWO4 crystal scintillator to nuclear recoils in the framework of the ADAMO project. The anisotropic features of the ZnWO4 crystal scintillators were initially measured with α particles; those results have also been confirmed by the additional measurements presented here. The experimental nuclear recoil data were obtained using a neutron generator at ENEA-Casaccia and neutron detectors to tag the scattered neutrons; in particular, the quenching factor values for nuclear recoils along different crystallographic axes have been determined for three different neutron scattering angles (i.e. nuclear recoils energies). The anisotropy of the light response for nuclear recoils in the ZnWO4 crystal scintillator has been determined at 5.4 standard deviations. These results open the possibility to realize a pioneering experiment to investigate the above-mentioned DM candidates by means of the directionality. [ABSTRACT FROM AUTHOR]

Published
2022
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17. DAMA/LIBRA results and perspectives

Author

Bernabei, R, Belli, P, Bussolotti, A, Cerulli, R, Di Marco, A, Merlo, V, Montecchia, F, Cappella, F, D'Angelo, A, Incicchitti, A, Mattei, A, Caracciolo, V, Dai, Cj, H. L., H, X. H., M, Sheng, Xd, and Z. P., Y

Subjects
Scintillation detectors, elementary particle processes, Dark Matter, Settore FIS/04, Scintillation detectors, Dark Matter, elementary particle processes
Published
2019

19. Dark Matter Particles in the Galactic Halo

Author

Bernabei, R, Belli, P, Di Marco, A, Merlo, V, Montecchia, F, Cappella, F, D'Angelo, A, Incicchitti, A, Caracciolo, V, Cerulli, R, C J, D, H L, H, H H, K, X H, M, X D, S, R G, W, and Z P, Y

Subjects
undergrond physics, dark matter, low background techniques, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2018

20. RECENT RESULTS FROM DAMA/LIBRA AND PERSPECTIVES

Author

Bernabei, R, Belli, P, D'Angelo, S, Di Marco, A, Montecchia, F, D'Angelo, A, Incicchitti, A, Prosperi, D, Cappella, F, Caracciolo, V, Cerulli, R, Dai, C, Hl, H, Kuang, H, Xh, M, Sheng, X, Wang, R, and Zp, Y

Subjects
underground physics, dark matter, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2017
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21. DAMA/LIBRA–phase2 results and implications on several dark matter scenarios.

Author

Bernabei, R., Belli, P., Caracciolo, V., Cerulli, R., Merlo, V., Cappella, F., d'Angelo, A., Incicchitti, A., Di Marco, A., Dai, C. J., He, H. L., Ma, X. H., Sheng, X. D., Montecchia, F., and Ye, Z. P.

Subjects
DARK matter, PARTICLES (Nuclear physics), THRESHOLD energy, PARTICLE physics
Abstract

The first DAMA/LIBRA–phase2 model-independent results (exposure: 1. 1 3 ton × yr , and software energy threshold at 1 keV). They further confirm — with high confidence level — the evidence already observed by DAMA/NaI and DAMA/LIBRA–phase1 on the basis of the exploited model-independent dark matter (DM) annual modulation signature. The total exposure of the three experiments above the 2 keV software energy threshold is 2. 4 6 ton × yr. Here, several DM candidate particles and related scenarios are analyzed including the latest results. Thanks to the increased exposure and to the lower software energy threshold, corollary model-dependent analyses permit to significantly restrict the allowed regions for the parameters spaces of various dark matter candidates and astrophysical, particle and nuclear physics scenarios. [ABSTRACT FROM AUTHOR]

Published
2020
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22. DAMA-phase1 results and perspectives of the phase2

Author

Bernabei, R, Belli, P, Cappella, F, Caracciolo, V, Cerulli, R, Dai, Cj, D'Angelo, A, D'Angelo, S, Di Marco, A, Hl, H, Incicchitti, A, Kuang, H, Xh, M, Montecchia, F, Sheng, X, Wang, R, and Zp, Y

Subjects
underground physics, rare processes, Dark Matter, Dark Matter, underground physics, rare processes, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2015

23. DAMA/LIBRA Results and Perspectives.

Author

Aharonov, Y., Bravina, L., Kabana, S., Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C.J., d'Angelo, A., Di Marco, A., He, H.L., Incicchitti, A., Kuang, H.H., Ma, X.H., Montecchia, F., Sheng, X.D., Wang, R.G., and Ye, Z.P.

Subjects
DARK matter, GALACTIC halos, ASTRONOMICAL observations, NUCLEAR reactions, PHASE transitions
Abstract

The DAMA/LIBRA experiment (~ 250 kg sensitive mass composed by highly radio-pure NaI(Tl)) is in data taking in the underground Laboratory of Gran Sasso (LNGS). In its first phase (DAMA/LIBRA-phase1) this experiment and the former DAMA/NaI experiment (~ 100 kg of highly radio-pure NaI(Tl)) collected data for 14 independent annual cycles, exploiting the model-independent Dark Matter (DM) annual modulation signature (total exposure 1.33 ton x yr). A DM annual modulation effect has been observed at 9.3 σ C.L., supporting the presence of DM particles in the galactic halo. No systematic or side reaction able to mimic the observed DM annual modulation has been found or suggested by anyone. Recent analyses on possible diurnal effects, on the Earth shadowing effect and on possible interpretation in terms of Mirror DM will be mentioned. At present DAMA/LIBRA is running in its phase2 with increased sensitivity. [ABSTRACT FROM AUTHOR]

Published
2018
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24. Search for rare processes with DAMA experimental set-ups.

Author

Aharonov, Y., Bravina, L., Kabana, S., Barabash, A.S., Belli, P., Bernabei, R., Boiko, R.S., Brudanin, V.B., Cappella, F., Caracciolo, V., Cerulli, R., Chernyak, D.M., Dai, C.J., Danevich, F.A., d'Angelo, A., Di Marco, A., He, H.L., Incicchitti, A., Kasperovych, D.V., and Kobychev, V.V.

Subjects
DARK matter, CADMIUM isotopes, ANISOTROPY, ZINC compounds, SCINTILLATORS
Abstract

Profiting of the favourable conditions offered by the Gran Sasso underground laboratory and of the several low-background DAMA set-ups, many and competitive results have been obtained for rare processes. Here the main results will be briefly resumed and some more details about the latest activities will be given. In particular, the searches on ββdecays of 106Cd and 116Cd and the perspectives of a complementary investigation on those Dark Matter (DM) candidates inducing just nuclear recoils, by exploiting the directionality approach with the anisotropic ZnWO4 scintillators, will be underlined. [ABSTRACT FROM AUTHOR]

Published
2018
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25. IMPROVED MODEL-DEPENDENT COROLLARY ANALYSES AFTER THE FIRST SIX ANNUAL CYCLES OF DAMA/LIBRA-phase2.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d'Angelo, A., Di Marco, A., He, H. L., Incicchitti, A., Ma, X. H., Merlo, V., Montecchia, F., Sheng, X. D., and Ye, Z. P.

Subjects
THRESHOLD energy, DARK matter, FALLOW deer, SCINTILLATION counters
Abstract

Copyright of Nuclear Physics & Atomic Energy is the property of National Academy of Sciences of Ukraine, Institute for Nuclear Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019
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26. Technical aspects in dark matter investigations

Author

Bernabei, R, Belli, P, Cappella, F, Caracciolo, V, Cerulli, R, Dai, Cj, D'Angelo, A, Di Marco, A, H. L, H, Incicchitti, A, X. H, M, Montecchia, F, Sheng, Xd, Wang, Rg, and Z. P., Y

Subjects
Physics, History, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Mathematical model, Field (physics), Spectrometer, Dark Matter, Dark matter, FOS: Physical sciences, Cosmology, Particle detector, Particle identification, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education, Computational physics, Measuring instrument, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Some theoretical and experimental aspects regarding the direct dark matter field are mentioned. In particular some arguments, which play a relevant role in the evaluation of model dependent interpretations of experimental results and in comparisons, are shortly addressed., Comment: Proceedings of TAUP 2011 Conference

Published
2014

27. Science with the new generation high energy gamma- ray experiments

Author

Alvarez, M., D'Armiento, D., Agnetta, G., Alberdi, A., Antonelli, A., Argan, A., Assis, P., Baltz, E. A., Bambi, C., Barbiellini, G., Bartko, H., Basset, M., Bastieri, D., Belli, P., Benford, G., Bergstrom, L., Bernabei, R., Bertone, G., Biland, A., Biondo, B., Bocchino, F., Brigida, M., Bringmann, T., Brogueira, P., Bulgarelli, A., Caballero, J. A., Caliandro, G. A., Camarri, P., Cappella, F., Caraveo, P., Carbone, R., Carvajal, M., Casanova, S., Castro Tirado, A. J. , Catalano, O. , Catena, R. , Celi, F. , Celotti, A. , Cerulli, R. , Chen, A. , Clay, R. , Cocco, V. , Conrad, J. , Costa, E. , Cuoco, A. , Cusumano, G. , Dai, C. J. , Dawson, De Lotto, De Paris, de Ugarte Postigo, Del Monte, E. , Delgado, Di Ciaccio, Di Cocco, Di Falco, Di Persio, G. , Dingus, B. L. , Dominguez, A. , Donato, F. , Donnarumma, I. , Doro, M. , Edsjo, Espino Navas, J. M., Espirito Santo, M. C. , Evangelista, Y. , Evoli, C. , Fargion, D. , Favuzzi, C. , Feroci, M. , Fiorini, M. , Foggetta, L. , Fornengo, N. , Froysland, T. , Frutti, M. , Fuschino, F. , Gomez, J. L. , Gomez, M. , Gaggero, D. , Galante, N. , Gallardo, M. I. , Galli, M. , Garcia, J. E. , Garczarczyk, M. , Gargano, F. , Gaug, M. , Gianotti, F. , Giarrusso, S. , Giebels, B. , Giglietto, N. , Giommi, P. , Giordano, F. , Giuliani, A. , Glicenstein, J. , Goncalves, P. , Grasso, D. , Guerriero, M. , He, H. L. , Incicchitti, A. , Kirk, J. , Kuang, H. H., La Barbera, La Rosa, G. , Labanti, C. , Lamanna, G. , Lapshov, I. , Lazzarotto, F. , Liberati, S. , Liello, F. , Lipari, P. , Longo, F. , Loparco, F. , Lozano, Lucentini De Sanctis, P. G. , Ma, J. M. , Maccarone, M. C. , Maccione, L. , Malvezzi, V. , Mangano, A. , Mariotti, M. , Marisaldi, M. , Martel, I. , Masiero, A. , Massaro, E. , Mastropietro, M. , Mattaini, E. , Mauri, F. , Mazziotta, M. N. , Mereghetti, S. , Mineo, T. , Mizobuchi, S. , Moiseev, A. , Moles, M. , Monte, C. , Montecchia, F. , Morelli, E. , Morselli, A. , Moskalenko, I. , Nozzoli, F. , Ormes, J. F., Peres Torres, M. A. , Pacciani, L. , Pellizzoni, Perez Bernal, F. , Perotti, F. , Picozza, P. , Pieri, L. , Pietroni, M. , Pimenta, M. , Pina, A. , Pittori, C. , Pontoni, C. , Porrovecchio, G. , Prada, F. , Prest, M. , Prosperi, D. , Protheroe, R. , Pucella, G. , Quesada, J. M. , Quintana, J. M. , Quintero, J. R. , Raino, S. , Rapisarda, M. , Rissi, M. , Rodriguez, J. , Rossi, E. , Rowell, G. , Rubini, A. , Russo, Sanchez Conde, M. , Sacco, B. , Scapin, V. , Schelke, M. , Segreto, A. , Sellerholm, A. , Sheng, X. D. , Smith, A. , Soffitta, P. , Sparvoli, R. , Spinelli, P. , Stamatescu, V. , Stark, L. S. , Tavani, M. , Thornton, G. , Titarchuk, L. G. , Tome, B. , Traci, A. , Trifoglio, M. , Trois, A. , Vallania, P. , Vallazza, E. , Vercellone, S. , Vernetto, S. , Vitale, V. , Wild, N. , Ye, Z. P. , Zambra, A. , Zandanel, F. , Zanello, BRANCHINI, ENZO FRANCO, A.Lionetto, A.Morselli, Alvarez, M., D'Armiento, D., Agnetta, G., Alberdi, A., Antonelli, A., Argan, A., Assis, P., Baltz, E. A., Bambi, C., Barbiellini, G., Bartko, H., Basset, M., Bastieri, D., Belli, P., Benford, G., Bergstrom, L., Bernabei, R., Bertone, G., Biland, A., Biondo, B., Bocchino, F., Branchini, ENZO FRANCO, Brigida, M., Bringmann, T., Brogueira, P., Bulgarelli, A., Caballero, J. A., Caliandro, G. A., Camarri, P., Cappella, F., Caraveo, P., Carbone, R., Carvajal, M., Casanova, S., Castro, Tirado, A. J., Catalano, O., Catena, R., Celi, F., Celotti, A., Cerulli, R., Chen, A., Clay, R., Cocco, V., Conrad, J., Costa, E., Cuoco, A., Cusumano, G., Dai, C. J., Dawson, De, Lotto, De, Pari, de Ugarte, Postigo, Del, Monte, E., Delgado, Di, Ciaccio, Di, Cocco, Di, Falco, Di, Persio, G., Dingu, B. L., Dominguez, A., Donato, F., Donnarumma, I., Doro, M., Edsjo, Espino, Nava, J., M., Espirito, Santo, M. C., Evangelista, Y., Evoli, C., Fargion, D., Favuzzi, C., Feroci, M., Fiorini, M., Foggetta, L., Fornengo, N., Froysland, T., Frutti, M., Fuschino, F., Gomez, J. L., Gomez, M., Gaggero, D., Galante, N., Gallardo, M. I., Galli, M., Garcia, J. E., Garczarczyk, M., Gargano, F., Gaug, M., Gianotti, F., Giarrusso, S., Giebel, B., Giglietto, N., Giommi, P., Giordano, F., Giuliani, A., Glicenstein, J., Goncalve, P., Grasso, D., Guerriero, M., He, H. L., Incicchitti, A., Kirk, J., Kuang, H., H., La, Barbera, La, Rosa, G., Labanti, C., Lamanna, G., Lapshov, I., Lazzarotto, F., Liberati, S., Liello, F., Lipari, P., Longo, F., Loparco, F., Lozano, Lucentini De, Sancti, P. G., Ma, J. M., Maccarone, M. C., Maccione, L., Malvezzi, V., Mangano, A., Mariotti, M., Marisaldi, M., Martel, I., Masiero, A., Massaro, E., Mastropietro, M., Mattaini, E., Mauri, F., Mazziotta, M. N., Mereghetti, S., Mineo, T., Mizobuchi, S., Moiseev, A., Mole, M., Monte, C., Montecchia, F., Morelli, E., Morselli, A., Moskalenko, I., Nozzoli, F., Orme, J., F., Peres, Torre, M. A., Pacciani, L., Pellizzoni, Perez, Bernal, F., Perotti, F., Picozza, P., Pieri, L., Pietroni, M., Pimenta, M., Pina, A., Pittori, C., Pontoni, C., Porrovecchio, G., Prada, F., Prest, M., Prosperi, D., Protheroe, R., Pucella, G., Quesada, J. M., Quintana, J. M., Quintero, J. R., Raino, S., Rapisarda, M., Rissi, M., Rodriguez, J., Rossi, E., Rowell, G., Rubini, A., Russo, Sanchez, Conde, M., Sacco, B., Scapin, V., Schelke, M., Segreto, A., Sellerholm, A., Sheng, X. D., Smith, A., Soffitta, P., Sparvoli, R., Spinelli, P., Stamatescu, V., Stark, L. S., Tavani, M., Thornton, G., Titarchuk, L. G., Tome, B., Traci, A., Trifoglio, M., Troi, A., Vallania, P., Vallazza, E., Vercellone, S., Vernetto, S., Vitale, V., Wild, N., Ye, Z. P., Zambra, A., Zandanel, and F., Zanello

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, General Relativity and Quantum Cosmology, dark matter, Space Physics (physics.space-ph), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Physics - Space Physics, gamma ray astronomy
Abstract

This Conference is the fifth of a series of Workshops on High Energy Gamma- ray Experiments, following the Conferences held in Perugia 2003, Bari 2004, Cividale del Friuli 2005, Elba Island 2006. This year the focus was on the use of gamma-ray to study the Dark Matter component of the Universe, the origin and propagation of Cosmic Rays, Extra Large Spatial Dimensions and Tests of Lorentz Invariance., Comment: 328 pages, 7.8Mb, Proceedings of the 5th SCINEGHE Workshop, June 18-20, 2007 http://www.roma2.infn.it/SciNeGHE07/

Published
2007
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28. Highlights on signals from Dark Matter particles.

Author

Bernabei, R., Belli, P., Di Marco, A., Montecchia, F., d'Angelo, A., Incicchitti, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
DARK matter, PARTICLE interactions, GALACTIC halos, STANDARD model (Nuclear physics), ANNIHILATION reactions, BARYON decay
Abstract

Many experimental observations and theoretical arguments have pointed out that a large fraction of the Universe is composed by Dark Matter particles. Many possibilities are open on the nature and interaction types of such relic particles. In particular, this paper summarizes the main results obtained by exploiting the model independent Dark Matter annual modulation signature for the presence of Dark Matter particles in the galactic halo by DAMA experiment. [ABSTRACT FROM AUTHOR]

Published
2017
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29. Results and Perspectives of DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Cerulli, R., Di Marco, A., Merlo, V., Montecchia, F., Cappella, F., d'Angelo, A., Incicchitti, A., Caracciolo, V., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
DARK matter, GALACTIC halos, GALAXIES, PARTICLES (Nuclear physics), ASTROPHYSICS
Abstract

The DAMA/LIBRA experiment (∼ 250 kg sensitive mass composed by highly radio-pure NaI(Tl)) is in data taking underground in the Gran Sasso Laboratory. Its first phase (DAMA/LIBRA–phase1) and the former DAMA/NaI experiment (∼ 100 kg of highly radio-pure NaI(Tl)) collected data for 14 independent annual cycles, exploiting the model-independent Dark Matter (DM) annual modulation signature (total exposure 1.33 ton × yr). A DM annual modulation effect has been observed at 9.3 σ C.L., supporting the presence of DM particles in the galactic halo. No systematic or side reaction able to mimic the observed DM annual modulation has been found or suggested by anyone. Recent analyses on possible diurnal effects and on possible interpretation in terms of Mirror DM will be mentioned. At present DAMA/LIBRA is running in its phase2 with increased sensitivity. [ABSTRACT FROM AUTHOR]

Published
2017
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30. ZnWO4 anisotropic scintillator for Dark Matter investigation with the directionality technique.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F. A., d'Angelo, A., Di Marco, A., Incicchitti, A., Mokina, V. M., Poda, D. V., Polischuk, O. G., Taruggi, C., and Tretyak, V. I.

Subjects
SCINTILLATORS, DARK matter, SCINTILLATION spectrometry, CRYSTAL detectors, ANISOTROPY, ASTROPHYSICS
Abstract

The ZnWO4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue Dark Matter investigation with the directionality technique. In particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on the direction of the impinging particle with respect to the crystal axes, while the response to γ/β radiation is isotropic. The anisotropy of the light output can be considered to point out the presence in the diurnal counting rate of a Dark Matter signal produced by candidate particle inducing just nuclear recoils. In addition this crystal detector has also other important characteristics for a Dark Matter experiment: high light output, high level of radiopurity. In this paper the present performances of the developed ZnWO4 crystal scintillator will be summarized together with the possible future improvements. Some reachable sensitivities - under given assumptions - in the investigation of DM candidate particles with the directionality technique will also be addressed. [ABSTRACT FROM AUTHOR]

Published
2017
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31. New Results from DAMA/LIBRA

Author

Bernabei, R, Belli, P, Cappella, F, Caracciolo, V, Castellano, S, Cerulli, R, Dai, C, D'Angelo, A, D'Angelo, S, Di Marco, A, Hl, H, Incicchitti, A, Xh, M, Montecchia, F, Sheng, X, Wang, R, and Zp, Y

Subjects
dark matter, low background physics, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2014

32. The Annual Modulation Signature for Dark Matter: DAMA/LIBRA-Phase1 Results and Perspectives

Author

Bernabei, R, Belli, P, Cappella, F, Caracciolo, V, Castellano, S, Cerulli, R, Dai, Cj, D'Angelo, A, D'Angelo, S, Di Marco, A, H. L, H, Incicchitti, A, Kuang, Hh, X. H, M, Montecchia, F, Prosperi, D, Sheng, Xd, Wang, Rg, and Z. P., Y

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, DAMA/LIBRA, Article Subject, Dark matter, Astrophysics, lcsh:QC1-999, Settore FIS/04 - Fisica Nucleare e Subnucleare, Galactic halo, Amplitude, Neutrino detector, astroparticle physics, DAMA/NaI, rare processes, Dark Matter, Neutrino oscillation, lcsh:Physics
Abstract

The results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA-phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized. The DAMA/LIBRA-phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radiopure NaI(Tl) target. The modulation amplitude of thesingle-hitevents in the (2–6) keV energy interval is0.0112±0.0012 cpd/kg/keV; the measured phase is144±7days and the measured period is0.998±0.002 yr; values are in a good well in agreement with those expected for DM particles. No systematic or side reactions able to mimic the exploited DM signature have been found or suggested by anyone over more than a decade. Some of the perspectives of the presently running DAMA/LIBRA-phase2 are outlined.

Published
2014
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33. FIRST MODEL INDEPENDENT RESULTS FROM DAMA/LIBRA-PHASE2.

Author

Bernabei, R., Belli, P., Bussolotti, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d’Angelo, A., Di Marco, A., He, H. L., Incicchitti, A., Ma, X. H., Mattei, A., Merlo, V., Montecchia, F., Sheng, SDX. D., and Ye, Z. P.

Subjects
MODULATION theory, PHOTOMULTIPLIERS, DATA analysis, SCINTILLATORS, DARK matter
Abstract

Copyright of Nuclear Physics & Atomic Energy is the property of National Academy of Sciences of Ukraine, Institute for Nuclear Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2018
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34. Results from DAMA/LIBRA and perspectives

Author

Bernabei, R, Belli, P, Cappella, F, Caracciolo, V, Castellano, S, Cerulli, R, Dai, Cj, D'Angelo, A, D'Angelo, S, Di Marco, A, H. L, H, Incicchitti, A, X. H, M, Montecchia, F, Sheng, Xd, Wang, Rg, and Z. P., Y

Subjects
Hypothetisches Teilchen, Dark Matter, DAMA/LIBRA, Gran Sasso Laboratory, Settore FIS/04 - Fisica Nucleare e Subnucleare
Abstract

Bernabei, R. "Results from DAMA/LIBRA and perspectives" in Proceedings, 9th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2013) / Oberlack, Uwe, Sissol, Pierre (eds.), 2013 ; AXION-WIMP 2013 : 9th Patras Workshop on Axions, WIMPs and WISPs , 2013-06-23 - 2013-06-28, Mainz 9th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2013, Mainz, Germany, 24 Jun 2013 - 28 Jun 2013; Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 179-183 (2013). doi:10.3204/DESY-PROC-2013-04/cerulli_riccardo, The DAMA/LIBRA experiment (about 250 kg of highly radiopure NaI(Tl)) is in operation at the Gran Sasso National Laboratory of the INFN. The main aim of the experiment is to further investigate the Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature. At the time of this Workshop, the DAMA/LIBRA experiment and the former DAMA/NaI one (the first generation experiment having an exposed mass of about 100 kg) have released results corresponding to a total exposure of 1.17 ton × yr over 13 annual cycles; they have provided a model independent evidence of the presence of DM particles in the galactic halo at 8.9 $σ$ C.L.. The results of a further annual cycle, concluding the DAMA/LIBRA–phase1, have been released after this Workshop and are not included here. After the upgrade at fall 2010 when all the PMTs have been replaced with new ones having higher quantum efficiency, the feasibility to decrease the software energy threshold has been demonstrated and the setup is running in this new configuration, named DAMA/LIBRA–phase2., Published by Verlag Deutsches Elektronen-Synchrotron, Hamburg

Published
2013
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35. Particle Dark Matter in DAMA/LIBRA

Author

Bernabei, R, Belli, P, Cappella, F, Cerulli, R, Dai, Cj, D'Angelo, A, H. L, H, Incicchitti, A, Xh, M, Montecchia, F, Nozzoli, F, Prosperi, D, Sheng, X, Wang, R, and Zp, Y

Subjects
dark matter, rare processes, low background physics, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2011

36. Highlights of DAMA/LIBRA.

Author

Bernabei, R., Belli, P., d'Angelo, A., Di Marco, A., Montecchia, F., Incicchitti, A., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
SCINTILLATORS, DARK matter, GALACTIC dynamics, GALACTIC halos, SODIUM
Abstract

The DAMA project develops and uses new/improved low background scintillation detectors to investigate the Dark Matter (DM) particle component(s) in the galactic halo and rare processes deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N.. Here some highlights of DAMA/LIBRA (Large sodium Iodide Bulk for Rare processes) as a unique apparatus in direct DM investigation for its full sensitive mass, target material, intrinsic radio-purity, methodological approach and all the controls performed on the experimental parameters are outlined. The DAMA/LIBRA-phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles) have reached a model-independent evidence at 9.3 σ C.L. for the presence of DM particles in the galactic halo exploiting the DM annual modulation signature with highly radio-pure NaI(Tl) target. Some of the perspectives of the presently running DAMA/LIBRA-phase2 are summarised and the powerful tools offered by a model independent strategy of DM investigation are pointed out. [ABSTRACT FROM AUTHOR]

Published
2016
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37. From DAMA/NaI to DAMA/LIBRA and beyond

Author

Cappella, F, Bernabei, R, Belli, P, Montecchia, F, Nozzoli, F, Incicchitti, A, Prosperi, D, Cerulli, R, C J, D, H L, H, H H, K, X H, M, X D, S, R G, W, and Z P, Y

Subjects
dark matter, Scintillation detectors, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2007

38. Recent DAMA results

Author

Bernabei, R, Belli, P, Montecchia, F, Cappella, F, D'Angelo, A, Incicchitti, A, Prosperi, D, Cerulli, R, C J, D, H L, H, H H, K, J M, M, and Z P§, Y

Subjects
low-background techniques, Dark Matter, scintillators, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2006

39. Results from DAMA/NaI and perspectives for DAMA/LIBRA

Author

Bernabei, R., Belli, P., Cappella, F., Montecchia, F., Nozzoli, F., Incicchitti, A., Prosperi, D., Riccardo Cerulli, Dai, Cj, Kuang, Hh, Ma, Jm, and Ye, Zp

Subjects
underground physics, SPECTRAL-ANALYSIS, NAI(TL) SET-UP, Settore FIS/01 - Fisica Sperimentale, Astrophysics (astro-ph), GRAN-SASSO, Dark Matter, FOS: Physical sciences, ANNUAL MODULATION SIGNATURE, DAMA experiments, Astrophysics, Settore FIS/04 - Fisica Nucleare e Subnucleare
Abstract

The about 100 kg highly radiopure NaI(Tl) set-up of the DAMA project (DAMA/NaI) took data over seven annual cycles up to July 2002 and has achieved results on various rare processes. Its main aim has actually been the exploitation of the model independent WIMP annual modulation signature. After this conference the total exposure, collected during the seven annual cycles, was released. This cumulative exposure (107731 kg day) has given a model independent evidence for the presence of a Dark Matter particle component in the galactic halo at 6.3 sigma C.L.; this main result is summarised here. Some of the many possible corollary model dependent quests for the candidate particle are mentioned. At present, after about five years of new developments, a second generation low background set-up (DAMA/LIBRA with a mass of about 250 kg NaI(Tl)) was built and is taking data since March 2003. New R&D efforts toward a possible NaI(Tl) ton set-up, we proposed in 1996, have been funded and started in 2003., Contributed paper to the Conf. "Beyond the Desert 03", Rindberg Castle, Germany, June 2003

Published
2003
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40. DAMA/LIBRA-phase1 results and perspectives of the phase2.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., Di Marco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
GALACTIC halos, DARK matter, NUCLEAR particle research, EARTH'S orbit, PARTICLE physics
Abstract

The results obtained with the total exposure of 1.04 ton x yr collected by DAMA/LIBRA--phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized. The DAMA/LIBRA--phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radio-pure NaI(Tl) target. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade. The same data of DAMA/LIBRA--phase1 have also been analyzed searching for possible DM second-order diurnal effect; at present, the DM diurnal modulation amplitude -- expected because of the Earth diurnal motion -- evaluated on the basis of the DAMA Dark Matter annual modulation results is below the reached experimental sensitivity. Some of the perspectives of the presently running DAMA/LIBRA--phase2 are outlined. [ABSTRACT FROM AUTHOR]

Published
2015
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41. WIMP search by DAMA at Gran Sasso

Author

Bernabei, R, Amato, M, Belli, P, Cappella, F, Cerulli, R, Dai, Cj, H. L., H, Ignesti, G, Incicchitti, A, Wang, Hh, J. M., M, Montecchia, F, Nozzoli, F, and Prosperi, D

Subjects
Dark Matter, WIMPs, underground physics, Settore FIS/04 - Fisica Nucleare e Subnucleare
Published
2001

42. Other rare processes with DAMA/LIBRA.

Author

Di Marco, A., Cappella, F., and Cerulli, R.

Subjects
*ELECTRON capture, *DARK matter, *PAULI exclusion principle, *PAIR production, *GALACTIC halos
Abstract

DAMA/NaI and DAMA/LIBRA data have allowed the study of several rare processes. In this paper, the results obtained for internal pair production in Am decay, charge not conserving electron capture in I and possible processes violating the Pauli Exclusion Principle are briefly discussed. [ABSTRACT FROM AUTHOR]

Published
2016
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43. The calibration and the monitoring/alarm system.

Author

Cappella, F., Caracciolo, V., Cerulli, R., Bussolotti, A., and Mattei, A.

Subjects
*DARK matter, *PARTICLES (Nuclear physics), *GALACTIC halos, *COMPUTER software, *QUANTUM efficiency
Abstract

Two important parts of the DAMA/LIBRA setup are the calibration system and the monitoring/alarm system. The calibration system allows to perform detector calibrations without changing the running condition of the experiment; the monitoring/alarm system allows to record several parameters to control the running status and its stability. In this paper, we will describe the two system reporting some related obtained results. [ABSTRACT FROM AUTHOR]

Published
2016
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44. Investigation on possible systematics and side processes.

Author

Bernabei, R., Belli, P., Di Marco, A., d'Angelo, A., Incicchitti, A., Cappella, F., Cerulli, R., Dai, C. J., Ma, X. H., and Ye, Z. P.

Subjects
DARK matter, EARTH'S orbit, ORBITAL velocity, SOLAR system, PARTICLES (Nuclear physics)
Abstract

This paper gathers the main arguments and reasons which allowed one to exclude either systematic effects or side processes as possible sources of the annual modulation observed in the former DAMA/NaI and the latter DAMA/LIBRA-phase1 datasets. [ABSTRACT FROM AUTHOR]

Published
2016
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45. The highly radiopure NaI(Tl) DAMA/LIBRA setup.

Author

Bernabei, R., Belli, P., Incicchitti, A., Mattei, A., Cappella, F., Cerulli, R., Dai, C. J., Ma, X. H., and Ye, Z. P.

Subjects
DARK matter, SCINTILLATION counters, PARTICLES (Nuclear physics), PHOTOMULTIPLIERS, ATMOSPHERIC nitrogen, GALACTIC halos
Abstract

The 250 kg highly radiopure NaI(Tl) DAMA/LIBRA apparatus, presently running at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. is described. [ABSTRACT FROM AUTHOR]

Published
2016
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46. DAMA/LIBRA-phase1 model independent results.

Author

Bernabei, R., Belli, P., d'Angelo, S., Di Marco, A., Montecchia, F., d'Angelo, A., Incicchitti, A., Prosperi, D., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
ASTRONOMICAL observations, SCINTILLATION counters, DARK matter, GALACTIC halos, PARTICLES (Nuclear physics)
Abstract

Experimental observations and theoretical arguments at Galaxy and larger scales have suggested that a large fraction of the Universe is composed by Dark Matter (DM) particles. This has motivated the DAMA experimental efforts to investigate the presence of such particles in the galactic halo by exploiting a model independent signature with highly radiopure setups deep underground. In this paper, a review of the results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA-phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN during seven annual cycles is given. The DAMA/LIBRA-phase1 data give evidence for the presence of DM particles in the galactic halo, on the basis of the exploited model independent DM annual modulation signature by using highly radiopure NaI(Tl) target, at 7.5 C.L. Including also the data of the first generation DAMA/NaI experiment (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles), the C.L. is 9.3 and the modulation amplitude of the single-hit scintillation events in the (2-6) keV energy interval is: (0.0112 ± 0.0012) cpd/kg/keV; the measured phase is (144 ± 7) days and the measured period is (0.998 ± 0.002) yr, values well in agreement with those expected for DM particles. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade. [ABSTRACT FROM AUTHOR]

Published
2016
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47. NEW RESULTS FROM DAMA/LIBRA.

Author

Bernabei, R., Belli, P., d'Angelo, S., Di Marco, A., Montecchia, F., Cappella, F., d'Angelo, A., Incicchitti, A., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., He, H. L., Kuang, H. H., Ma, X. H., Sheng, X. D., Wang, R. G., and Yeb, Z. P.

Subjects
DARK matter, GALACTIC halos, PARTICLES, DETECTORS, COSINE function
Published
2015

48. New results and perspectives of DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Castellano, S., Cerulli, R., Dai, C. J., d'Angelo, A., d'Angelo, S., DiMarco, A., He, H. L., Incicchitti, A., Kuang, H. H., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
PARTICLE detectors, DARK matter, GALACTIC halos, PHOTOMULTIPLIERS, RADIOCHEMICAL purification
Abstract

The results obtained with the total exposure of 1.04 ton x yr col lected by DAMA/LIBRA--phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are briefly summarized. The DAMA/LIBRA--phase1 and the former DAMA/NaI data (cumulative exposure 1.33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3 σ C.L. for the presence of Dark Matter (DM) particles in the galactic halo, on the basis of the exploited model inde- pendent DM annual modulation signature by using highly radio-pure NaI(Tl) target. The modulation parameters are well in agreement with those expected for DM particles. No systematic or side reaction able to mimic the exploited DM signature has been found or suggested by anyone over more than a decade. Some of the perspectives of the presently running DAMA/LIBRA--phase2 are outlined. [ABSTRACT FROM AUTHOR]

Published
2014
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49. The Dark Matter annual modulation results from DAMA/LIBRA.

Author

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Dai, C. J., d'Angelo, A., Di Marco, A., He, H. L., Incicchitti, A., Ma, X. H., Montecchia, F., Sheng, X. D., Wang, R. G., and Ye, Z. P.

Subjects
DARK matter, INTERSTELLAR medium, PARTICLES, GALACTIC halos, PHOTOMULTIPLIERS
Abstract

The DAMA/LIBRA experiment, running at the Gran Sasso National Laboratory of the I.N.F.N. in Italy, has a sensitive mass of about 250 kg highly radiopure NaI(Tl). It is mainly devoted to the investigation of Dark Matter (DM) particles in the Galactic halo by exploiting the model independent DM annual modulation signature. The present DAMA/LIBRA experiment and the former DAMA/NaI one (the first generation experiment having an exposed mass of about 100 kg) have released so far results corresponding to a total exposure of 1.17 ton x yr over 13 annual cycles. They provide a model independent evidence of the presence of DM particles in the galactic halo at 8.9 σ C.L. on the basis of the investigated DM signature. The data of another annual cycle in the same DAMA/LIBRA running conditions are at hand. After the replacement at the end of 2012 of all the photomultipliers (PMTs) with new ones, having higher quantum efficiency, DAMA/LIBRA has entered to its phase 2; such a replacements allowed the lowering of the software energy threshold of the experiment in the present data taking. A short summary of the obtained results is presented and future perspectives of the experiment mentioned. [ABSTRACT FROM AUTHOR]

Published
2014
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50. Results from the DAMA/LIBRA experiment

Author

Bernabei, R, Belli, P, Cappella, F, Cerulli, R, Dai, Cj, D'Angelo, A, H. L, H, Incicchitti, A, Kuang, Hh, X. M, M, Montecchia, F, Nozzoli, F, Prosperi, D, Sheng, Xd, Wang, Rg, and Z. P., Y

Subjects
Physics, History, DAMA/LIBRA, Settore FIS/01 - Fisica Sperimentale, Dark matter, Astrophysics, Particle detector, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education, Galactic halo, Amplitude, Observatory, DAMA/NaI, Scintillation counter
Abstract

The DAMA project is an observatory for rare processes and it is operative deep underground at the Gran Sasso National Laboratory of the I.N.F.N. In particular, the DAMA/LIBRA (Large sodium Iodide Bulk for RAre processes) set-up consists of highly radiopure NaI(Tl) detectors for a total sensitive exposed mass of ≊ 250 kg. The results, obtained by this set-up by exploiting the model independent annual modulation signature of Dark Matter (DM) particles, have confirmed and improved those obtained by the former DAMA/NaI experiment. A model independent evidence for the presence of Dark Matter particles in the galactic halo is cumulatively obtained at 8.2 σ C.L. No systematics or side reactions able to account for the measured modulation amplitude and to contemporaneously satisfy all the many specific requirements of the signature have been found or suggested by anyone over more than a decade. Future perspectives are shortly addressed.

Published
2010
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