Author: "L. Ludhova" / Search Limiters: Available in Library Collection - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"L. Ludhova"' showing total 32 results

Start Over Author "L. Ludhova" Search Limiters Available in Library Collection

32 results on '"L. Ludhova"'

1. Borexino’s search for low-energy neutrinos associated with gravitational wave events from GWTC-3 database

Author: D. Basilico, G. Bellini, J. Benziger, R. Biondi, B. Caccianiga, F. Calaprice, A. Caminata, A. Chepurnov, D. D’Angelo, A. Derbin, A. Di Giacinto, V. Di Marcello, X. F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, D. Franco, C. Galbiati, C. Ghiano, M. Giammarchi, A. Goretti, M. Gromov, D. Guffanti, Aldo Ianni, Andrea Ianni, A. Jany, V. Kobychev, G. Korga, S. Kumaran, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, I. Machulin, J. Martyn, E. Meroni, L. Miramonti, M. Misiaszek, V. Muratova, R. Nugmanov, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Pelicci, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, M. T. Ranalli, G. Ranucci, A. Re, N. Rossi, S. Schönert, D. Semenov, G. Settanta, M. Skorokhvatov, A. Singhal, O. Smirnov, A. Sotnikov, R. Tartaglia, G. Testera, E. Unzhakov, A. Vishneva, R. B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, S. Zavatarelli, K. Zuber, and G. Zuzel
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The search for neutrino events in correlation with gravitational wave (GW) events for three observing runs (O1, O2 and O3) from 09/2015 to 03/2020 has been performed using the Borexino data-set of the same period. We have searched for signals of neutrino-electron scattering and inverse beta-decay (IBD) within a time window of $$\pm \, 1000$$ ± 1000 s centered at the detection moment of a particular GW event. The search was done with three visible energy thresholds of 0.25, 0.8 and 3.0 MeV. Two types of incoming neutrino spectra were considered: the mono-energetic line and the supernova-like spectrum. GW candidates originated by merging binaries of black holes (BHBH), neutron stars (NSNS) and neutron star and black hole (NSBH) were analyzed separately. Additionally, the subset of most intensive BHBH mergers at closer distances and with larger radiative mass than the rest was considered. In total, follow-ups of 74 out of 93 gravitational waves reported in the GWTC-3 catalog were analyzed and no statistically significant excess over the background was observed. As a result, the strongest upper limits on GW-associated neutrino and antineutrino fluences for all flavors ( $$\nu _e, \nu _\mu , \nu _\tau $$ ν e , ν μ , ν τ ) at the level $$10^9{-}10^{15}~\textrm{cm}^{-2}\,\textrm{GW}^{-1}$$ 10 9 - 10 15 cm - 2 GW - 1 have been obtained in the 0.5–5 MeV neutrino energy range.
Published: 2023
Full Text: View/download PDF

2. Search for low-energy signals from fast radio bursts with the Borexino detector

Author: S. Appel, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, R. Biondi, B. Caccianiga, F. Calaprice, A. Caminata, A. Chepurnov, D. D’Angelo, A. Derbin, A. Di Giacinto, V. Di Marcello, X. F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, D. Franco, C. Galbiati, C. Ghiano, M. Giammarchi, A. Goretti, A. S. Göttel, M. Gromov, D. Guffanti, Aldo Ianni, Andrea Ianni, A. Jany, V. Kobychev, G. Korga, S. Kumaran, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, G. Lukyanchenko, I. Machulin, J. Martyn, E. Meroni, L. Miramonti, M. Misiaszek, V. Muratova, R. Nugmanov, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Pelicci, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, M. T. Ranalli, G. Ranucci, A. Razeto, A. Re, M. Redchuk, N. Rossi, S. Schönert, D. Semenov, G. Settanta, M. Skorokhvatov, A. Singhal, O. Smirnov, A. Sotnikov, R. Tartaglia, G. Testera, E. Unzhakov, A. Vishneva, R. B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, S. Zavatarelli, I. Zhutikov, K. Zuber, G. Zuzel, and Borexino Collaboration
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The search for neutrino events in correlation with 42 most intense fast radio bursts (FRBs) has been performed using the Borexino dataset from 05/2007 to 06/2021. We have searched for signals with visible energies above 250 keV within a time window of $$\pm \, 1000$$ ± 1000 s corresponding to detection time of a particular FRB. We also applied an alternative approach based on searching for specific shapes of neutrino-electron scattering spectra in the full exposure data of the Borexino detector. In particular, two incoming neutrino spectra were considered: the monoenergetic line and the spectrum expected from supernovae. The same spectra were considered for electron antineutrinos detected through inverse beta-decay reaction. No statistically significant excess over the background was observed. As a result, the strongest upper limits on FRB-associated neutrino fluences of all flavors have been obtained in the 0.5–50 MeV neutrino energy range.
Published: 2022
Full Text: View/download PDF

3. Identification of the cosmogenic $$^{11}$$ 11 C background in large volumes of liquid scintillators with Borexino

Author: M. Agostini, K. Altenmüller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, R. Biondi, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, P. Cavalcante, A. Chepurnov, D. D’Angelo, S. Davini, A. Derbin, A. Di ZGiacintio, V. Di Marcello, X. F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, A. Formozov, D. Franco, C. Galbiati, C. Ghiano, M. Giammarchi, A. Goretti, A. S. Göttel, M. Gromov, D. Guffanti, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, V. Kobychev, G. Korga, S. Kumaran, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, R. Nugmanov, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, L. Pelicci, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, A. Porcelli, G. Raikov, M. T. Ranalli, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Schönert, D. Semenov, G. Settanta, M. Skorokhvatov, A. Singhal, O. Smirnov, A. Sotnikov, Y. Suvorov, R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, A. Vishneva, R. B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, S. Zavatarelli, K. Zuber, and G. Zuzel
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Cosmogenic radio-nuclei are an important source of background for low-energy neutrino experiments. In Borexino, cosmogenic $$^{11}$$ 11 C decays outnumber solar pep and CNO neutrino events by about ten to one. In order to extract the flux of these two neutrino species, a highly efficient identification of this background is mandatory. We present here the details of the most consolidated strategy, used throughout Borexino solar neutrino measurements. It hinges upon finding the space-time correlations between $$^{11}$$ 11 C decays, the preceding parent muons and the accompanying neutrons. This article describes the working principles and evaluates the performance of this Three-Fold Coincidence (TFC) technique in its two current implementations: a hard-cut and a likelihood-based approach. Both show stable performances throughout Borexino Phases II (2012–2016) and III (2016–2020) data sets, with a $$^{11}$$ 11 C tagging efficiency of $$\sim 90$$ ∼ 90 % and $$\sim $$ ∼ 63–66 % of the exposure surviving the tagging. We present also a novel technique that targets specifically $$^{11}$$ 11 C produced in high-multiplicity during major spallation events. Such $$^{11}$$ 11 C appear as a burst of events, whose space-time correlation can be exploited. Burst identification can be combined with the TFC to obtain about the same tagging efficiency of $$\sim 90\%$$ ∼ 90 % but with a higher fraction of the exposure surviving, in the range of $$\sim $$ ∼ 66–68 %.
Published: 2021
Full Text: View/download PDF

4. Theia: an advanced optical neutrino detector

Author: M. Askins, Z. Bagdasarian, N. Barros, E. W. Beier, E. Blucher, R. Bonventre, E. Bourret, E. J. Callaghan, J. Caravaca, M. Diwan, S. T. Dye, J. Eisch, A. Elagin, T. Enqvist, V. Fischer, K. Frankiewicz, C. Grant, D. Guffanti, C. Hagner, A. Hallin, C. M. Jackson, R. Jiang, T. Kaptanoglu, J. R. Klein, Yu. G. Kolomensky, C. Kraus, F. Krennrich, T. Kutter, T. Lachenmaier, B. Land, K. Lande, J. G. Learned, V. Lozza, L. Ludhova, M. Malek, S. Manecki, J. Maneira, J. Maricic, J. Martyn, A. Mastbaum, C. Mauger, F. Moretti, J. Napolitano, B. Naranjo, M. Nieslony, L. Oberauer, G. D. Orebi Gann, J. Ouellet, T. Pershing, S. T. Petcov, L. Pickard, R. Rosero, M. C. Sanchez, J. Sawatzki, S. H. Seo, M. Smiley, M. Smy, A. Stahl, H. Steiger, M. R. Stock, H. Sunej, R. Svoboda, E. Tiras, W. H. Trzaska, M. Tzanov, M. Vagins, C. Vilela, Z. Wang, J. Wang, M. Wetstein, M. J. Wilking, L. Winslow, P. Wittich, B. Wonsak, E. Worcester, M. Wurm, G. Yang, M. Yeh, E. D. Zimmerman, S. Zsoldos, and K. Zuber
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract New developments in liquid scintillators, high-efficiency, fast photon detectors, and chromatic photon sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov and scintillation signals. Such a detector could reconstruct particle direction and species using Cherenkov light while also having the excellent energy resolution and low threshold of a scintillator detector. Situated deep underground, and utilizing new techniques in computing and reconstruction, this detector could achieve unprecedented levels of background rejection, enabling a rich physics program spanning topics in nuclear, high-energy, and astrophysics, and across a dynamic range from hundreds of keV to many GeV. The scientific program would include observations of low- and high-energy solar neutrinos, determination of neutrino mass ordering and measurement of the neutrino CP-violating phase $$\delta $$ δ , observations of diffuse supernova neutrinos and neutrinos from a supernova burst, sensitive searches for nucleon decay and, ultimately, a search for neutrinoless double beta decay, with sensitivity reaching the normal ordering regime of neutrino mass phase space. This paper describes Theia, a detector design that incorporates these new technologies in a practical and affordable way to accomplish the science goals described above.
Published: 2020
Full Text: View/download PDF

5. Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II

Author: The Borexino collaboration, S. K. Agarwalla, M. Agostini, K. Altenmüller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, D. Bick, G. Bonfini, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, L. Cappelli, P. Cavalcante, F. Cavanna, A. Chepurnov, K. Choi, D. D’Angelo, S. Davini, A. Derbin, A. Di Giacinto, V. Di Marcello, X. F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, K. Fomenko, A. Formozov, D. Franco, F. Gabriele, C. Galbiati, M. Gschwender, C. Ghiano, M. Giammarchi, A. Goretti, M. Gromov, D. Guffanti, C. Hagner, E. Hungerford, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, S. Kumaran, V. Kobychev, G. Korga, T. Lachenmaier, M. Laubenstein, E. Litvinovich, P. Lombardi, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, G. Manuzio, S. Marcocci, J. Maricic, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Rottenanger, S. Schönert, D. Semenov, M. Skorokhvatov, O. Smirnov, A. Sotnikov, C. Sun, Y. Suvorov, T. Takeuchi, R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, A. Vishneva, R. B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, O. Zaimidoroga, S. Zavatarelli, K. Zuber, and G. Zuzel
Subjects: Neutrino Physics, Beyond Standard Model, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-ν e survival probability P ee (E), and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI’s) which modify the chiral couplings and P ee (E). In this paper, we search for such NSI’s, in particular, flavor-diagonal neutral current interactions that modify the ν e e and ν τ e couplings using Borexino Phase II data. Standard Solar Model predictions of the solar neutrino fluxes for both high- and low-metallicity assumptions are considered. No indication of new physics is found at the level of sensitivity of the detector and constraints on the parameters of the NSI’s are placed. In addition, with the same dataset the value of sin2 θ W is obtained with a precision comparable to that achieved in reactor antineutrino experiments .
Published: 2020
Full Text: View/download PDF

6. First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso

Author: P. Agnes, T. Alexander, A. Alton, K. Arisaka, H.O. Back, B. Baldin, K. Biery, G. Bonfini, M. Bossa, A. Brigatti, J. Brodsky, F. Budano, L. Cadonati, F. Calaprice, N. Canci, A. Candela, H. Cao, M. Cariello, P. Cavalcante, A. Chavarria, A. Chepurnov, A.G. Cocco, L. Crippa, D. D'Angelo, M. D'Incecco, S. Davini, M. De Deo, A. Derbin, A. Devoto, F. Di Eusanio, G. Di Pietro, E. Edkins, A. Empl, A. Fan, G. Fiorillo, K. Fomenko, G. Forster, D. Franco, F. Gabriele, C. Galbiati, A. Goretti, L. Grandi, M. Gromov, M.Y. Guan, Y. Guardincerri, B. Hackett, K. Herner, E.V. Hungerford, Al. Ianni, An. Ianni, C. Jollet, K. Keeter, C. Kendziora, S. Kidner, V. Kobychev, G. Koh, D. Korablev, G. Korga, A. Kurlej, P.X. Li, B. Loer, P. Lombardi, C. Love, L. Ludhova, S. Luitz, Y.Q. Ma, I. Machulin, A. Mandarano, S. Mari, J. Maricic, L. Marini, C.J. Martoff, A. Meregaglia, E. Meroni, P.D. Meyers, R. Milincic, D. Montanari, A. Monte, M. Montuschi, M.E. Monzani, P. Mosteiro, B. Mount, V. Muratova, P. Musico, A. Nelson, S. Odrowski, M. Okounkova, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, E. Pantic, L. Papp, S. Parmeggiano, R. Parsells, K. Pelczar, N. Pelliccia, S. Perasso, A. Pocar, S. Pordes, D. Pugachev, H. Qian, K. Randle, G. Ranucci, A. Razeto, B. Reinhold, A. Renshaw, A. Romani, B. Rossi, N. Rossi, S.D. Rountree, D. Sablone, P. Saggese, R. Saldanha, W. Sands, S. Sangiorgio, E. Segreto, D. Semenov, E. Shields, M. Skorokhvatov, O. Smirnov, A. Sotnikov, C. Stanford, Y. Suvorov, R. Tartaglia, J. Tatarowicz, G. Testera, A. Tonazzo, E. Unzhakov, R.B. Vogelaar, M. Wada, S. Walker, H. Wang, Y. Wang, A. Watson, S. Westerdale, M. Wojcik, A. Wright, X. Xiang, J. Xu, C.G. Yang, J. Yoo, S. Zavatarelli, A. Zec, C. Zhu, and G. Zuzel
Subjects: Physics, QC1-999
Abstract: We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4±0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422±67) kgd exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1×10−44 cm2 for a WIMP mass of 100 Gev/c2. Keywords: Dark matter, WIMP, Noble liquid detectors, Low-background detectors, Liquid scintillators
Published: 2015
Full Text: View/download PDF

7. Review article 'Geo-neutrinos'

Author: L. Ludhova
Subjects: Geophysics. Cosmic physics, QC801-809
Abstract: Geo-neutrinos, electron anti-neutrinos produced in β-decays of naturally occurring radioactive isotopes in the Earth, are a unique direct probe of our planet's interior. After a brief introduction about the Earth (mostly for physicists) and the very basics about the neutrinos and anti-neutrinos (mostly for geologists), I describe the geo-neutrino properties and the main aims of their study. An overview of the latest experimental results obtained by KamLAND and Borexino experiments is provided. A short overview of future perspectives of this new inter-disciplinary field is given.
Published: 2012
Full Text: View/download PDF

8. The DarkSide Multiton Detector for the Direct Dark Matter Search

Author: C. E. Aalseth, P. Agnes, A. Alton, K. Arisaka, D. M. Asner, H. O. Back, B. Baldin, K. Biery, G. Bonfini, M. Bossa, A. Brigatti, J. Brodsky, F. Budano, L. Cadonati, M. Cadoni, F. Calaprice, N. Canci, A. Candela, H. Cao, M. Cariello, P. Cavalcante, A. Chepurnov, A. G. Cocco, C. Condon, L. Crippa, D. D’Angelo, M. D’Incecco, S. Davini, M. De Deo, A. Derbin, A. Devoto, F. Di Eusanio, E. Edkins, A. Empl, A. Fan, G. Fiorillo, K. Fomenko, G. Forster, M. Foxe, D. Franco, F. Gabriele, C. Galbiati, A. Goretti, L. Grandi, M. Gromov, M. Y. Guan, Y. Guardincerri, B. Hackett, K. Herner, A. Hime, P. Humble, E. Hungerford, Al. Ianni, An. Ianni, D. E. Jaffe, C. Jollet, K. Keeter, C. Kendziora, S. Kidner, V. Kobychev, G. Koh, D. Korablev, G. Korga, A. Kurlej, P. X. Li, M. Lissia, P. Lombardi, L. Ludhova, S. Luitz, G. Lukyachenko, Y. Q. Ma, I. Machulin, A. Mandarano, S. M. Mari, J. Maricic, L. Marini, D. Markov, J. Martoff, A. Meregaglia, E. Meroni, P. D. Meyers, T. Miletic, R. Milincic, M. Montuschi, M. E. Monzani, P. Mosteiro, B. Mount, V. Muratova, P. Musico, D. Montanari, A. Nelson, S. Odrowski, A. Odrzywolek, J. L. Orrell, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, E. Pantic, S. Parmeggiano, B. Parsells, K. Pelczar, N. Pelliccia, S. Perasso, L. Perasso, A. Pocar, S. Pordes, D. Pugachev, H. Qian, K. Randle, G. Ranucci, A. Razeto, K. Recine, B. Reinhold, A. Renshaw, A. Romani, N. Rossi, B. Rossi, S. D. Rountree, D. Sablone, P. Saggese, R. Saldanha, W. Sands, S. Sangiorgio, E. Segreto, D. Semenov, E. Shields, M. Skorokhvatov, M. Smallcomb, O. Smirnov, A. Sotnikov, Y. Suvurov, R. Tartaglia, J. Tatarowicz, G. Testera, A. Tonazzo, E. Unzhakov, R. B. Vogelaar, M. Wada, S. E. Walker, H. Wang, Y. Wang, A. W. Watson, S. Westerdale, R. Williams, M. Wojcik, J. Xu, C. G. Yang, J. Yoo, B. Yu, S. Zavatarelli, W. L. Zhong, and G. Zuzel
Subjects: Physics, QC1-999
Abstract: Although the existence of dark matter is supported by many evidences, based on astrophysical measurements, its nature is still completely unknown. One major candidate is represented by weakly interacting massive particles (WIMPs), which could in principle be detected through their collisions with ordinary nuclei in a sensitive target, producing observable low-energy (
Published: 2015
Full Text: View/download PDF

9. Neutrino Oscillations

Author: G. Bellini, L. Ludhova, G. Ranucci, and F. L. Villante
Subjects: Physics, QC1-999
Abstract: In the last decades, a very important breakthrough has been brought about in the elementary particle physics by the discovery of the phenomenon of the neutrino oscillations, which has shown neutrino properties beyond the Standard Model. But a full understanding of the various aspects of the neutrino oscillations is far to be achieved. In this paper the theoretical background of the neutrino oscillation phenomenon is described, referring in particular to the paradigmatic models. Then the various techniques and detectors which studied neutrinos from different sources are discussed, starting from the pioneering ones up to the detectors still in operation and to those in preparation. The physics results are finally presented adopting the same research path which has been crossed by this long saga. The problems not yet fixed in this field are discussed, together with the perspectives of their solutions in the near future.
Published: 2014
Full Text: View/download PDF

10. Studying the Earth with Geoneutrinos

Author: L. Ludhova and S. Zavatarelli
Subjects: Physics, QC1-999
Abstract: Geoneutrinos, electron antineutrinos from natural radioactive decays inside the Earth, bring to the surface unique information about our planet. The new techniques in neutrino detection opened a door into a completely new interdisciplinary field of neutrino geoscience. We give here a broad geological introduction highlighting the points where the geoneutrino measurements can give substantial new insights. The status-of-art of this field is overviewed, including a description of the latest experimental results from KamLAND and Borexino experiments and their first geological implications. We performed a new combined Borexino and KamLAND analysis in terms of the extraction of the mantle geo-neutrino signal and the limits on the Earth's radiogenic heat power. The perspectives and the future projects having geo-neutrinos among their scientific goals are also discussed.
Published: 2013
Full Text: View/download PDF

11. Ten years of cosmic muons observation with Borexino

Author: Davide D’Angelo, M. Agostini, K. Altenmüller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, D. Bick, G. Bonfini, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, L. Cappelli, P. Cavalcante, F. Cavanna, A. Chepurnov, K. Choi, D. D’Angelo, S. Davini, A. Derbin, A. Di Giacinto, V. Di Marcello, X.F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, K. Fomenko, A. Formozov, D. Franco, F. Gabriele, C. Galbiati, M. Gschwender, C. Ghiano, M. Giammarchi, A. Goretti, M. Gromov, D. Guffanti, C. Hagner, E. Hungerford, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, S. Kumaran, V. Kobychev, G. Korga, T. Lachenmaier, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, G. Manuzio, S. Marcocci, J. Maricic, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, O. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, M.T. Ranalli, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Rottenanger, S. Schönert, D. Semenov, M. Skorokhvatov, O. Smirnov, A. Sotnikov, Y. Suvorov, R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, A. Vishneva, R.B. Vogelaar, F. von Feilitzsch, M. Wojcik, M. Wurm, O. Zaimidoroga, S. Zavatarelli, K. Zuber, and G. Zuzel
Subjects: Physics, History, Physics::Instrumentation and Detectors, precision measurement, flux [muon], pi, Astronomy, model [atmosphere], solar, Computer Science Applications, Education, Gran Sasso, modulation, correlation, high [energy], High Energy Physics::Experiment, Borexino, Cosmic muons, temperature [atmosphere], Nuclear Experiment
Abstract: The Borexino detector at Gran Sasso has now accumulated over ten years of continuous data which represent a magnificent opportunity to study the cosmic muon flux at a deep underground location. We present here a precision measurement of the flux and of the expected seasonal modulation. We present the correlation with the atmospheric temperature variations from global atmospheric models. We measure the correlation parameters and infer the kaon-to-pion ratio in the production of cosmic muons from high energy primaries. We also find evidence of a long term modulation that is not present in the atmospheric data and we investigate a possible positive correlation with the solar activity. Finally we observe a seasonal modulation of the production rate of cosmogenic neutrons that is in phase with the muon modulation but shows a surprisingly larger amplitude.
Published: 2020
Full Text: View/download PDF

12. Updated geoneutrino measurement with Borexino

Author: S. Rottenanger, D. Franco, A. Caminata, B. Caccianiga, E. Unzhakov, I. Lomskaya, Andrea Ianni, L. Oberauer, M. Gschwender, I. Drachnev, K. Zuber, O. Zaimidoroga, V. Atroshchenko, D. Guffanti, O. Smirnov, C. Ghiano, R.B. Vogelaar, F. von Feilitzsch, A. Re, G. Bonfini, M. Wojcik, J. Martyn, G. Zuzel, B. Neumair, X.F. Ding, A. Razeto, K. Altenmüller, G. Manuzio, V. Di Marcello, V. Strati, F. Gabriele, M. Redchuk, D. Semenov, F. Mantovani, V. Orekhov, L. Miramonti, M. Vivier, M. Gromov, M. Nieslony, D. Jeschke, N. Rossi, A. Di Ludovico, D. Bick, A. Onillon, R. Tartaglia, Ö. Penek, C. Hagner, J. Thurn, M. Meyer, L. Cappelli, B. Ricci, S. Zavatarelli, L. Pietrofaccia, M. Montuschi, A. Pocar, E. Hungerford, G. Bellini, T. Lachenmaier, A. Romani, T. Lasserre, L. Papp, A. Goretti, D. Basilico, V. Muratova, A. Sotnikov, J. Maricic, S. Kumaran, C. Galbiati, M. Giammarchi, I. Machulin, Z. Bagdasarian, G. Korga, J. Benziger, M. Agostini, S. Marcocci, A. Derbin, S. Schöinert, M. Pallavicini, Y. Suvorov, F. Ortica, Livia Ludhova, M. Skorokhvatov, M. Misiaszek, G. Ranucci, S. Davini, S. Appel, V. Kobychev, M.T. Ranalli, A. Formozov, P. Lombardi, L. Lukyanchenko, M. Laubenstein, E. Meroni, A. Chepurnov, G. Fiorentini, G. Lukyanchenko, L. Di Noto, N. Pilipenko, E. Litvinovich, A. Di Giacinto, D. D'Angelo, D. Bravo, M. Wurm, Aldo Ianni, A. Vishneva, G. Raikov, F. Calaprice, G. Testera, F. Cavanna, L. Ludhova, P. Cavalcante, A. Jany, and K. Choi
Subjects: data analysis method, History, Particle physics, liquid [scintillation counter], Geoneutrino, Computer Science Applications, Education, geophysics [neutrino], statistics, Environmental science, Borexino, low [background], activity report, experimental results
Abstract: Borexino is a 280-ton liquid scintillator detector located at the Laboratori Nazionali del Gran Sasso (LNGS), Italy and is one of the two detectors that has measured geoneutrinos so far. The unprecedented radio-purity of the scintillator, the shielding with highly purified water, and the placement of the detector at a 3800 m w.e. depth have resulted in very low background levels and has made Borexino an excellent apparatus for geoneutrino measurements. The new update of the Borexino geoneutrino measurement, using the data obtained from December 2007 to April 2019, has been presented. Enhanced analysis techniques, adopted in this measurement, have been also presented (poster presentation #39 by S. Kumaran). The updated statistics and the new elaborate analysis have led to more than a factor two increase in exposure ((1.12 ± 0.05) × 1032 protons × yr) when compared to the latest Borexino result from 2015. The resulting geoneutrino signal of 47.0 − 7.7 + 8.4 ( stat ) − 1.9 + 2.4 ( sys ) TNU has − 17.2 + 18.3 % total precision. The geological interpretations of this measurement have been discussed. In particular, the 99% C.L. observation of the mantle signal by exploiting the relatively well-known lithospheric contribution, the estimation of the radiogenic heat, as well as the comparison of these results to the predictions based on different geological models. The upper limits on the power of a hypothetical georeactor that might be present at different locations inside the Earth have been set.
Published: 2020
Full Text: View/download PDF

13. Solar and geoneutrinos

Author: L Ludhova, M Agostini, K Altenmüller, S Appel, V Atroshchenko, Z Bagdasarian, D Basilico, G Bellini, J Benziger, R Biondi, D Bravo, B Caccianiga, F Calaprice, A Caminata, P Cavalcante, A Chepurnov, D D’Angelo, S Davini, A Derbin, A Di Giacinto, V Di Marcello, X.F Ding, A Di Ludovico, L Di Noto, I Drachnev, A Formozov, D Franco, C Galbiati, C Ghiano, M Giammarchi, A Goretti, A.S Göttel, M Gromov, D Guffanti, Aldo Ianni, Andrea Ianni, A Jany, D Jeschke, V Kobychev, G Korga, S Kumaran, M Laubenstein, E Litvinovich, P Lombardi, I Lomskaya, G Lukyanchenko, L Lukyanchenko, I Machulin, J Martyn, E Meroni, M Meyer, L Miramonti, M Misiaszek, V Muratova, B Neumair, M Nieslony, R Nugmanov, L Oberauer, V Orekhov, F Ortica, M Pallavicini, L Papp, L Pelicci, Ö Penek, L Pietrofaccia, N Pilipenko, A Pocar, G Raikov, M.T Ranalli, G Ranucci, A Razeto, A Re, M Redchuk, A Romani, N Rossi, S Schönert, D Semenov, G Settanta, M Skorokhvatov, A Singhal, O Smirnov, A Sotnikov, Y Suvorov, R Tartaglia, G Testera, J Thurn, E Unzhakov, F Villante, A Vishneva, R.B Vogelaar, F von Feilitzsch, M Wojcik, M Wurm, S Zavatarelli, K Zuber, G Zuzel, 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), and Borexino
Subjects: History, neutrino: solar, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, ddc:530, High Energy Physics::Experiment, neutrino: geophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ddc, Physics::Geophysics, Computer Science Applications, Education
Abstract: Thanks to the progress of neutrino physics, today we are able of exploiting neutrinos as a tool to study astrophysical objects. The latter in turn serve as unique sources of elusive neutrinos, which fundamental properties are still to be understood. This contribution attempts to summarize the latest results obtained by measuring neutrinos emitted from the Sun and geoneutrinos produced in radioactive decays inside the Earth, with a particular focus on a recent discovery of the CNO-cycle solar neutrinos by Borexino. Comprehensive measurement of the pp-chain solar neutrinos and the first directional detection of sub-MeV solar neutrinos by Borexino, the updated 8B solar neutrino results of Super-Kamiokande, as well as the latest Borexino and KamLAND geoneutrino measurements are also discussed.
Published: 2021
Full Text: View/download PDF

14. First Cherenkov directional detection of sub-MeV solar neutrinos in Borexino

Author: Johann Martyn, M. Agostini, K. Altenmüller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, R. Biondi, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, P. Cavalcante, A. Chepurnov, D. D’Angelo, S. Davini, A. Derbin, A. Di Giacinto, V. Di Marcello, X.F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, A. Formozov, D. Franco, C. Galbiati, C. Ghiano, M. Giammarchi, A. Goretti, A.S. Göttel, M. Gromov, D. Guffanti, null Aldo Ianni, null Andrea Ianni, A. Jany, D. Jeschke, V. Kobychev, G. Korga, S. Kumaran, M. Laubenstein, E. Litvinovich, P. Lombardi, I. Lomskaya, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, R. Nugmanov, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, L. Pelicci, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, G. Raikov, M.T. Ranalli, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Schönert, D. Semenov, G. Settanta, M. Skorokhvatov, A. Singhal, O. Smirnov, A. Sotnikov, Y. Suvorov, R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, A. Vishneva, R.B. Vogelaar, F. von Feilitzsch, M. Wojcik, B. Wonsak, M. Wurm, S. Zavatarelli, K. Zuber, and G. Zuzel
Subjects: Computer Science::Machine Learning, History, Physics::Instrumentation and Detectors, Computer Science::Mathematical Software, Computer Science::Digital Libraries, Computer Science Applications, Education
Abstract: Borexino is a 280t liquid scintillator detector at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. Its main goal is the precision spectroscopy of solar neutrinos down to energies of 0.19 MeV and for this task it features an unprecedented radio-purity and a high scintillation light yield. The solar neutrinos are measured by the elastic scattering off electrons which induce isotropically emitted scintillation photons as well as a sub-dominant number of Cherenkov photons that are detected by photomulitplier tubes. Here we present the first detection of sub-MeV solar neutrinos using their associated Cherenkov photons in a high light yield liquid scintillator detector. In Borexino electrons with E>0.16MeV produce Cherenkov photons, where the ratio of Cherenkov photons from the neutrino scattered electrons is estimated to be < 1% for all PMT hits, so a typical event by event direction reconstruction is not possible. Instead this analysis looks at the integrated signal of the PMT hits of all detected events by correlating the position of each hit PMT relative to the reconstructed position of the event and the well known position of the Sun. In this way it is possible to measure an angular distribution that shows the statistical contribution of Cherenkov photons from the solar neutrino recoil electrons. Using the Geant4-based Borexino Monte Carlo to produce the expected angular distribution for solar neutrinos and background we have measured 8643 − 2058 +2252 neutrino events out of 19904 total events for an energy region around the 7Be edge between 0.53 MeV and 0.74 MeV.
Published: 2021
Full Text: View/download PDF

15. Observation of CNO cycle solar neutrinos in Borexino

Author: Ö Penek, M Agostini, K Altenmüller, S Appel, V Atroshchenko, Z Bagdasarian, D Basilico, G Bellini, J Benziger, R Biondi, D Bravo, B Caccianiga, F Calaprice, A Caminata, P Cavalcante, A Chepurnov, D D’Angelo, S Davini, A Derbin, A Di Giacinto, V Di Marcello, X.F Ding, A Di Ludovico, L Di Noto, I Drachnev, A Formozov, D Franco, C Galbiati, C Ghiano, M Giammarchi, A Goretti, A.S Göttel, M Gromov, D Guffanti, Aldo Ianni, Andrea Ianni, A Jany, D Jeschke, V Kobychev, G Korga, S Kumaran, M Laubenstein, E Litvinovich, P Lombardi, I Lomskaya, L Ludhova, G Lukyanchenko, L Lukyanchenko, I Machulin, J Martyn, E Meroni, M Meyer, L Miramonti, M Misiaszek, V Muratova, B Neumair, M Nieslony, R Nugmanov, L Oberauer, V Orekhov, F Ortica, M Pallavicini, L Papp, L Pelicci, L Pietrofaccia, N Pilipenko, A Pocar, G Raikov, M.T Ranalli, G Ranucci, A Razeto, A Re, M Redchuk, A Romani, N Rossi, S Schønert, D Semenov, G Settanta, M Skorokhvatov, A Singhal, O Smirnov, A Sotnikov, Y Suvorov, R Tartaglia, G Testera, J Thurn, E Unzhakov, F Villante, A Vishneva, R.B Vogelaar, F von Feilitzsch, M Wojcik, M Wurm, S Zavatarelli, K Zuber, and G Zuzel
Subjects: History, Physics::Instrumentation and Detectors, Astrophysics::Solar and Stellar Astrophysics, ddc:530, High Energy Physics::Experiment, Computer Science Applications, Education
Abstract: The Borexino detector, located at the Laboratori Nazionali del Gran Sasso in Italy, is a radiopure 280 ton liquid scintillator detector with a primary goal to measure low-energy solar neutrinos created in the core of the Sun. These neutrinos are a consequence of nuclear fusion reactions in the solar core where Hydrogen is burned into Helium and provide a direct probe of the energy production processes, namely the proton-proton (pp) chain and the Carbon-Nitrogen-Oxygen (CNO) cycle. The fusion of Hydrogen in the case of the CNO cycle, which is expected to contribute in the order of less than 1% to the total solar energy, is catalyzed by Carbon, Nitrogen, and Oxygen directly depending on the abundances of these elements in the solar core. The measurement of CNO neutrinos is challenging due to the high spectral correlation with the decay electrons of the background isotope 210Bi and the pep solar neutrino signal. The experimental achievement of thermal stabilization of the Borexino detector after mid 2016, has opened the possibility to develop a method to constrain the 210Bi rate through its decay daughter and α emitter 210Po which can be identified in Borexino with an efficiency close to 100 percent on an event-by-event basis. Moreover, the flux of pep neutrinos can be constrained precisely through a global analysis of solar neutrino data which is independent of the dataset used for the CNO analysis. This conference contribution is dedicated to the first experimental evidence of neutrinos produced in the CNO fusion cycle in the Sun which is at the same time the dominant energy production mechanism in heavier stars compared to the Sun.
Published: 2021
Full Text: View/download PDF

16. Overview on solar, geo, and reactor neutrino experiments

Author: L Ludhova
Subjects: Physics, History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, High Energy Physics::Experiment, ddc:530, Reactor neutrino, Neutrino, Neutrino oscillation, Computer Science Applications, Education
Abstract: 6th Symposium on Prospects in the Physics of Discrete Symmetries, DICRETE 2018, Vienna, Austria, 26 Nov 2018 - 30 Nov 2018; Journal of physics / Conference series 1586, 012034 (2020). doi:10.1088/1742-6596/1586/1/012034 special issue: "6th Symposium on Prospects in the Physics of Discrete Symmetries - DISCRETE 2018", Published by IOP Publ., Bristol
Published: 2018
Full Text: View/download PDF

17. DarkSide-50, a background free experiment for dark matter searches

Author: P. Agnes, 1 T. Alexander, 2 A. Alton, 3 K. Arisaka, 4 H. O. Back, 5 B. Baldin, 6 K. Biery, 6 G. Bonfini, 7 M. Bossa, 8 A. Brigatti, 9 J. Brodsky, 5 F. Budano, 10 L. Cadonati, 2 F. Calaprice, 5 N. Canci, 4 A. Candela, 7 H. Cao, 5 M. Cariello, 11 P. Cavalcante, 7 A. Chavarria, 12 A. Chepurnov, 13 A. G. Cocco, 14 L. Crippa, 9 D. D’Angelo, 9 M. D’Incecco, 7 S. Davini, 15 M. De Deo, 7 A. Derbin, 16 A. Devoto, 17 F. Di Eusanio, 5 G. Di Pietro, 9 E. Edkins, 18 A. Empl, 15 A. Fan, 4 G. Fiorillo, 14 K. Fomenko, 19 G. Forster, 2 D. Franco, 1 F. Gabriele, 7 C. Galbiati, 5 A. Goretti, 5 L. Grandi, 12 M. Gromov, 13 M. Y. Guan, 20 Y. Guardincerri, 6 B. Hackett, 18 K. Herner, 6 E. V. Hungerford, 15 A.l. Ianni, 7 A.n. Ianni, 5 C. Jollet, 21 K. Keeter, 22 C. Kendziora, 6 S. Kidner, a. V. Kobychev, 24 G. Koh, 5 D. Korablev, 19 G. Korga, 15 A. Kurlej, 2 P. X. Li, 20 B. Loer, 5 P. Lombardi, 9 C. Love, 25 L. Ludhova, 9 S. Luitz, 26 Y. Q. Ma, 20 I. Machulin, 28 A. Mandarano, 10 J. Maricic, 18 L. Marini, 10 C. J. Martoff, 25 A. Meregaglia, 21 E. Meroni, 9 P. D. Meyers, 5 R. Milincic, 18 D. Montanari, 6 M. Montuschi, 7 M. E. Monzani, 26 P. Mosteiro, 5 B. Mount, 22 V. Muratova, 16 P. Musico, 11 A. Nelson, 5 S. Odrowski, 7 M. Okounkova, 5 M. Orsini, 7 F. Ortica, 29 L. Pagani, 11 M. Pallavicini, 11 E. Pantic, 4, 30 L. Papp, 23 S. Parmeggiano, 9 R. Parsells, 5 K. Pelczar, 31 N. Pelliccia, 29 S. Perasso, 1 A. Pocar, 2 S. Pordes, 6 D. Pugachev, 27 H. Qian, 5 K. Randle, 2 G. Ranucci, 9 A. Razeto, 7 B. Reinhold, 18 A. Renshaw, 4 A. Romani, 29 B. Rossi, 5, 14 N. Rossi, 7 S. D. Rountree, 23 D. Sablone, 15 P. Saggese, 7 R. Saldanha, 12 W. Sands, 5 S. Sangiorgio, 32 E. Segreto, 7 D. Semenov, 16 E. Shields, 5 M. Skorokhvatov, 28 O. Smirnov, 19 A. Sotnikov, 19 C. Stanford, 5 Y. Suvorov, 4 R. Tartaglia, 7 J. Tatarowicz, 25 G. Testera, 11 A. Tonazzo, 1 E. Unzhakov, 16 R. B. Vogelaar, 23 M. Wada, 5 S. Walker, 14 H. Wang, 4 Y. Wang, 20 A. Watson, 25 S. Westerdale, 5 M. Wojcik, 31 A. Wright, 5 X. Xiang, 5 J. Xu, 5 C. G. Yang, 20 J. Yoo, 6 S. Zavatarelli, 11 A. Zec, 2 C. Zhu, G. Zuzel31, MARI, Stefano Maria, P., Agne, 1 T., Alexander, 2 A., Alton, 3 K., Arisaka, 4 H. O., Back, 5 B., Baldin, 6 K., Biery, 6 G., Bonfini, 7 M., Bossa, 8 A., Brigatti, 9 J., Brodsky, 5 F., Budano, 10 L., Cadonati, 2 F., Calaprice, 5 N., Canci, 4 A., Candela, 7 H., Cao, 5 M., Cariello, 11 P., Cavalcante, 7 A., Chavarria, 12 A., Chepurnov, 13 A. G., Cocco, 14 L., Crippa, 9 D., D’Angelo, 9 M., D’Incecco, 7 S., Davini, 15 M., De Deo, 7 A., Derbin, 16 A., Devoto, 17 F., Di Eusanio, 5 G., Di Pietro, 9 E., Edkin, 18 A., Empl, 15 A., Fan, 4 G., Fiorillo, 14 K., Fomenko, 19 G., Forster, 2 D., Franco, 1 F., Gabriele, 7 C., Galbiati, 5 A., Goretti, 5 L., Grandi, 12 M., Gromov, 13 M. Y., Guan, 20 Y., Guardincerri, 6 B., Hackett, 18 K., Herner, 6 E. V., Hungerford, Ianni, 15 A. l., Ianni, 7 A. n., 5 C., Jollet, 21 K., Keeter, 22 C., Kendziora, 6 S., Kidner, a. V., Kobychev, 24 G., Koh, 5 D., Korablev, 19 G., Korga, 15 A., Kurlej, 2 P. X., Li, 20 B., Loer, 5 P., Lombardi, 9 C., Love, 25 L., Ludhova, 9 S., Luitz, 26 Y. Q., Ma, 20 I., Machulin, 28 A., Mandarano, Mari, Stefano Maria, 10 J., Maricic, 18 L., Marini, 10 C. J., Martoff, 25 A., Meregaglia, 21 E., Meroni, 9 P. D., Meyer, 5 R., Milincic, 18 D., Montanari, 6 M., Montuschi, 7 M. E., Monzani, 26 P., Mosteiro, 5 B., Mount, 22 V., Muratova, 16 P., Musico, 11 A., Nelson, 5 S., Odrowski, 7 M., Okounkova, 5 M., Orsini, 7 F., Ortica, 29 L., Pagani, 11 M., Pallavicini, 11 E., Pantic, 30 L., Papp, 23 S., Parmeggiano, 9 R., Parsell, 5 K., Pelczar, 31 N., Pelliccia, 29 S., Perasso, 1 A., Pocar, 2 S., Porde, 6 D., Pugachev, 27 H., Qian, 5 K., Randle, 2 G., Ranucci, 9 A., Razeto, 7 B., Reinhold, 18 A., Renshaw, 4 A., Romani, 29 B., Rossi, 14 N., Rossi, 7 S. D., Rountree, 23 D., Sablone, 15 P., Saggese, 7 R., Saldanha, 12 W., Sand, 5 S., Sangiorgio, 32 E., Segreto, 7 D., Semenov, 16 E., Shield, 5 M., Skorokhvatov, 28 O., Smirnov, 19 A., Sotnikov, 19 C., Stanford, 5 Y., Suvorov, 4 R., Tartaglia, 7 J., Tatarowicz, 25 G., Testera, 11 A., Tonazzo, 1 E., Unzhakov, 16 R. B., Vogelaar, 23 M., Wada, 5 S., Walker, 14 H., Wang, 4 Y., Wang, 20 A., Watson, 25 S., Westerdale, 5 M., Wojcik, 31 A., Wright, 5 X., Xiang, 5 J., Xu, 5 C. G., Yang, 20 J., Yoo, 6 S., Zavatarelli, 11 A., Zec, 2 C., Zhu, and G., Zuzel31
Subjects: Physics, Large Underground Xenon experiment, Physics::Instrumentation and Detectors, Hot dark matter, Dark matter, Scalar field dark matter, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Dark matter halo, Weakly interacting massive particles, Warm dark matter, Instrumentation, Light dark matter, Mathematical Physics
Abstract: The existence of dark matter is inferred from gravitational effects, but its nature remains a deep mystery. One possibility, motivated by considerations in elementary particle physics, is that dark matter consists of elementary particles, such as the hypothesized Weakly Interacting Massive Particles (WIMPs), with mass ~ 100 GeV and cross-section ~ 10−47 cm2, that can be gravitationally trapped inside our galaxy and revealed by their scattering on nuclei. It should be possible to detect WIMPs directly, as the orbital motion of the WIMPs composing the dark matter halo pervading the galaxy should result in WIMP-nucleus collisions of sufficient energy to be observable in the laboratory. The DarkSide-50 experiment is a direct WIMP search using a Liquid Argon Time Projection Chamber (LAr-TPC) with an active mass of 50 kg with a high sensitivity and an ultra-low background detector.
Published: 2014

18. First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso

Author: P. Agnes, 1 T. Alexander, 2 A. Alton, 3 K. Arisaka, 4 H. O. Back, 5 B. Baldin, 6 K. Biery, 6 G. Bonfini, 7 M. Bossa, 8 A. Brigatti, 9 J. Brodsky, 5 F. Budano, 10 L. Cadonati, 2 F. Calaprice, 5 N. Canci, 4 A. Candela, 7 H. Cao, 5 M. Cariello, 11 P. Cavalcante, 7 A. Chavarria, 12 A. Chepurnov, 13 A. G. Cocco, 14 L. Crippa, 9 D. D’Angelo, 9 M. D’Incecco, 7 S. Davini, 15 M. De Deo, 7 A. Derbin, 16 A. Devoto, 17 F. Di Eusanio, 5 G. Di Pietro, 9 E. Edkins, 18 A. Empl, 15 A. Fan, 4 G. Fiorillo, 14 K. Fomenko, 19 G. Forster, 2 D. Franco, 1 F. Gabriele, 7 C. Galbiati, 5 A. Goretti, 5 L. Grandi, 12 M. Gromov, 13 M. Y. Guan, 20 Y. Guardincerri, 6 B. Hackett, 18 K. Herner, 6 E. V. Hungerford, 15 A.l. Ianni, 7 A.n. Ianni, 5 C. Jollet, 21 K. Keeter, 22 C. Kendziora, 6 S. Kidner, a. V. Kobychev, 24 G. Koh, 5 D. Korablev, 19 G. Korga, 15 A. Kurlej, 2 P. X. Li, 20 B. Loer, 5 P. Lombardi, 9 C. Love, 25 L. Ludhova, 9 S. Luitz, 26 Y. Q. Ma, 20 I. Machulin, 28 A. Mandarano, 10 J. Maricic, 18 L. Marini, 10 C. J. Martoff, 25 A. Meregaglia, 21 E. Meroni, 9 P. D. Meyers, 5 R. Milincic, 18 D. Montanari, 6 M. Montuschi, 7 M. E. Monzani, 26 P. Mosteiro, 5 B. Mount, 22 V. Muratova, 16 P. Musico, 11 A. Nelson, 5 S. Odrowski, 7 M. Okounkova, 5 M. Orsini, 7 F. Ortica, 29 L. Pagani, 11 M. Pallavicini, 11 E. Pantic, 4, 30 L. Papp, 23 S. Parmeggiano, 9 R. Parsells, 5 K. Pelczar, 31 N. Pelliccia, 29 S. Perasso, 1 A. Pocar, 2 S. Pordes, 6 D. Pugachev, 27 H. Qian, 5 K. Randle, 2 G. Ranucci, 9 A. Razeto, 7 B. Reinhold, 18 A. Renshaw, 4 A. Romani, 29 B. Rossi, 5, 14 N. Rossi, 7 S. D. Rountree, 23 D. Sablone, 15 P. Saggese, 7 R. Saldanha, 12 W. Sands, 5 S. Sangiorgio, 32 E. Segreto, 7 D. Semenov, 16 E. Shields, 5 M. Skorokhvatov, 28 O. Smirnov, 19 A. Sotnikov, 19 C. Stanford, 5 Y. Suvorov, 4 R. Tartaglia, 7 J. Tatarowicz, 25 G. Testera, 11 A. Tonazzo, 1 E. Unzhakov, 16 R. B. Vogelaar, 23 M. Wada, 5 S. Walker, 14 H. Wang, 4 Y. Wang, 20 A. Watson, 25 S. Westerdale, 5 M. Wojcik, 31 A. Wright, 5 X. Xiang, 5 J. Xu, 5 C. G. Yang, 20 J. Yoo, 6 S. Zavatarelli, 11 A. Zec, 2 C. Zhu, G. Zuzel 3, MARI, Stefano Maria, P. Agnes, P., Agne, 1 T., Alexander, 2 A., Alton, 3 K., Arisaka, 4 H. O., Back, 5 B., Baldin, 6 K., Biery, 6 G., Bonfini, 7 M., Bossa, 8 A., Brigatti, 9 J., Brodsky, 5 F., Budano, 10 L., Cadonati, 2 F., Calaprice, 5 N., Canci, 4 A., Candela, 7 H., Cao, 5 M., Cariello, 11 P., Cavalcante, 7 A., Chavarria, 12 A., Chepurnov, 13 A. G., Cocco, 14 L., Crippa, 9 D., D’Angelo, 9 M., D’Incecco, 7 S., Davini, 15 M., De Deo, 7 A., Derbin, 16 A., Devoto, 17 F., Di Eusanio, 5 G., Di Pietro, 9 E., Edkin, 18 A., Empl, 15 A., Fan, 4 G., Fiorillo, 14 K., Fomenko, 19 G., Forster, 2 D., Franco, 1 F., Gabriele, 7 C., Galbiati, 5 A., Goretti, 5 L., Grandi, 12 M., Gromov, 13 M. Y., Guan, 20 Y., Guardincerri, 6 B., Hackett, 18 K., Herner, 6 E. V., Hungerford, Ianni, 15 A. l., Ianni, 7 A. n., 5 C., Jollet, 21 K., Keeter, 22 C., Kendziora, 6 S., Kidner, a. V., Kobychev, 24 G., Koh, 5 D., Korablev, 19 G., Korga, 15 A., Kurlej, 2 P. X., Li, 20 B., Loer, 5 P., Lombardi, 9 C., Love, 25 L., Ludhova, 9 S., Luitz, 26 Y. Q., Ma, 20 I., Machulin, 28 A., Mandarano, Mari, Stefano Maria, 10 J., Maricic, 18 L., Marini, 10 C. J., Martoff, 25 A., Meregaglia, 21 E., Meroni, 9 P. D., Meyer, 5 R., Milincic, 18 D., Montanari, 6 M., Montuschi, 7 M. E., Monzani, 26 P., Mosteiro, 5 B., Mount, 22 V., Muratova, 16 P., Musico, 11 A., Nelson, 5 S., Odrowski, 7 M., Okounkova, 5 M., Orsini, 7 F., Ortica, 29 L., Pagani, 11 M., Pallavicini, 11 E., Pantic, 30 L., Papp, 23 S., Parmeggiano, 9 R., Parsell, 5 K., Pelczar, 31 N., Pelliccia, 29 S., Perasso, 1 A., Pocar, 2 S., Porde, 6 D., Pugachev, 27 H., Qian, 5 K., Randle, 2 G., Ranucci, 9 A., Razeto, 7 B., Reinhold, 18 A., Renshaw, 4 A., Romani, 29 B., Rossi, 14 N., Rossi, 7 S. D., Rountree, 23 D., Sablone, 15 P., Saggese, 7 R., Saldanha, 12 W., Sand, 5 S., Sangiorgio, 32 E., Segreto, 7 D., Semenov, 16 E., Shield, 5 M., Skorokhvatov, 28 O., Smirnov, 19 A., Sotnikov, 19 C., Stanford, 5 Y., Suvorov, 4 R., Tartaglia, 7 J., Tatarowicz, 25 G., Testera, 11 A., Tonazzo, 1 E., Unzhakov, 16 R. B., Vogelaar, 23 M., Wada, 5 S., Walker, 14 H., Wang, 4 Y., Wang, 20 A., Watson, 25 S., Westerdale, 5 M., Wojcik, 31 A., Wright, 5 X., Xiang, 5 J., Xu, 5 C. G., Yang, 20 J., Yoo, 6 S., Zavatarelli, 11 A., Zec, 2 C., Zhu, and G., Zuzel 3
Subjects: Physics::Instrumentation and Detectors, Astrophysics::Instrumentation and Methods for Astrophysics, High Energy Physics::Experiment, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear Experiment
Abstract: We report the first results of DarkSide-50, a direct search for dark matter operating in the un- derground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a ( 46.4 0.7 ) kg active mass, operated inside a 30 t or- ganic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a ( 1422 67 ) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1 10
Published: 2014

19. The Electronics and Data Acquisition System of the DarkSide Dark Matter Search

Author: The DarkSide Collaboration, P. Agnes 1, T. Alexander 2, A. Alton 3, K. Arisaka 4, H. O. Back 5, B. Baldin 6, K. Biery 6, G. Bonfini 7, M. Bossa 8, A. Brigatti 9, J. Brodsky 5, F. Budano 10, L. Cadonati 2, F. Calaprice 5, N. Canci 4, A. Candela 7, H. Cao 5, M. Cariello 11, P. Cavalcante 7, A. Chavarria 12, A. Chepurnov 13, A. G. Cocco 14, L. Crippa 9, D. D’Angelo 9, M. D’Incecco 7, S. Davini 15, M. De Deo 7, A. Derbin 16, A. Devoto 17, F. Di Eusanio 5, G. Di Pieto 9, E. Edkins 18, A. Empl 15, A. Fan 4, G. Fiorillo 14, K. Fomenko 19, G. Forster 2, D. Franco 1, F. Gabriele 7, C. Galbiati 5, A. Goretti 5, L. Grandi 12, M. Gromov 13, M. Y. Guan 20, Y. Guardincerri 6, B. Hackett 18, K. Herner 6, E. Hungerford 15, A.l. Ianni 7, A.n. Ianni 5, C. Jollet 21, K. Keeter 22, C. Kendziora 6, S. Kidner 23, V. Kobychev 24, G. Koh 5, D. Korablev 19, G. Korga 15, A. Kurlej 2, P. X. Li 20, B. Loer 5, P. Lombardi 9, C. Love 25, L. Ludhova 9, S. Luitz 26, Y. Q. Ma 20, I. Machulin 27, A. Mandarano 10, J. Maricic 18, L. Marini 10, J. Martoff 25, A. Meregaglia 21, E. Meroni 9, P. D. Meyers 5, R. Milincic 18, D. Montanari 6, M. Montuschi 7, M. E. Monzani 26, P. Mosteiro 5, B. Mount 22, V. Muratova 16, P. Musico 11, A. Nelson 5, S. Odrowski 7, M. Okounkoa 5, M. Orsini 7, F. Ortica 19, L. Pagani 11, M. Pallavicini 11, E. Pantic 4, L. Papp 23, S. Parmeggiano 9, Bob Parsells 5, K. Pelczar 31, N. Pelliccia 29, S. Perasso 1, A. Pocar 2, S. Pordes 6, D. Pugachev 27, H. Qian 5, K. Randle 2, G. Ranucci 9, A. Razeto 7, B. Reinhold 18, A. Renshaw 4, A. Romani 29, B. Rossi 5, N. Rossi 7, S. D. Rountree 23, D. Sablone 15, P. Saggese 7, R. Saldanha 12, W. Sands 5, S. Sangiorgio 30, E. Segreto 7, D. Semenov 16, E. Shields 5, M. Skorokhvatov 27, O. Smirnov 19, A. Sotnikov 19, C. Stanford 5, Suvorov 4, R. Tartaglia 17, J. Tatarowicz 25, G. Testera 11, A. Tonazzo 1, E. Unzhakov 16, R. B. Vogelaar 23, M. Wada 5, S. E. Walker 14, H. Wang 4, Y. Wang 28, A. Watson 25, S. Westerdale 5, M. Wojcik 31, A. Wright 5, X. Xiang 5, J. Xu 5, C. G. Yang 20, J. Yoo 6, S. Zavatarelli 11, A. Zec 2, C. Zhu 5, G. Zuzel 31, MARI, Stefano Maria, P. Agnes, P.Agnes, The DarkSide, Collaboration, P., Agnes 1, T., Alexander 2, A., Alton 3, K., Arisaka 4, H. O., Back 5, B., Baldin 6, K., Biery 6, G., Bonfini 7, M., Bossa 8, A., Brigatti 9, J., Brodsky 5, F., Budano 10, L., Cadonati 2, F., Calaprice 5, N., Canci 4, A., Candela 7, H., Cao 5, M., Cariello 11, P., Cavalcante 7, A., Chavarria 12, A., Chepurnov 13, A. G., Cocco 14, L., Crippa 9, D., D’Angelo 9, M., D’Incecco 7, S., Davini 15, M., De Deo 7, A., Derbin 16, A., Devoto 17, F., Di Eusanio 5, G., Di Pieto 9, E., Edkins 18, A., Empl 15, A., Fan 4, G., Fiorillo 14, K., Fomenko 19, G., Forster 2, D., Franco 1, F., Gabriele 7, C., Galbiati 5, A., Goretti 5, L., Grandi 12, M., Gromov 13, M. Y., Guan 20, Y., Guardincerri 6, B., Hackett 18, K., Herner 6, E., Hungerford 15, Ianni 7, A. l., Ianni 5, A. n., C., Jollet 21, K., Keeter 22, C., Kendziora 6, S., Kidner 23, V., Kobychev 24, G., Koh 5, D., Korablev 19, G., Korga 15, A., Kurlej 2, P. X., Li 20, B., Loer 5, P., Lombardi 9, C., Love 25, L., Ludhova 9, S., Luitz 26, Y. Q., Ma 20, I., Machulin 27, A., Mandarano 10, Mari, Stefano Maria, J., Maricic 18, L., Marini 10, J., Martoff 25, A., Meregaglia 21, E., Meroni 9, P. D., Meyers 5, R., Milincic 18, D., Montanari 6, M., Montuschi 7, M. E., Monzani 26, P., Mosteiro 5, B., Mount 22, V., Muratova 16, P., Musico 11, A., Nelson 5, S., Odrowski 7, M., Okounkoa 5, M., Orsini 7, F., Ortica 19, L., Pagani 11, M., Pallavicini 11, E., Pantic 4, L., Papp 23, S., Parmeggiano 9, Bob Parsells, 5, K., Pelczar 31, N., Pelliccia 29, S., Perasso 1, A., Pocar 2, S., Pordes 6, D., Pugachev 27, H., Qian 5, K., Randle 2, G., Ranucci 9, A., Razeto 7, B., Reinhold 18, A., Renshaw 4, A., Romani 29, B., Rossi 5, N., Rossi 7, S. D., Rountree 23, D., Sablone 15, P., Saggese 7, R., Saldanha 12, W., Sands 5, S., Sangiorgio 30, E., Segreto 7, D., Semenov 16, E., Shields 5, M., Skorokhvatov 27, O., Smirnov 19, A., Sotnikov 19, C., Stanford 5, Suvorov, 4, R., Tartaglia 17, J., Tatarowicz 25, G., Testera 11, A., Tonazzo 1, E., Unzhakov 16, R. B., Vogelaar 23, M., Wada 5, S. E., Walker 14, H., Wang 4, Y., Wang 28, A., Watson 25, S., Westerdale 5, M., Wojcik 31, A., Wright 5, X., Xiang 5, J., Xu 5, C. G., Yang 20, J., Yoo 6, S., Zavatarelli 11, A., Zec 2, C., Zhu 5, and G., Zuzel 31
Abstract: It is generally inferred from astronomical measurements th at Dark Matter (DM) comprises approximately 27% of the energy-dens ity of the universe. If DM is a subatomic particle, a possible candidate is a Weakl y Interacting Mas- sive Particle (WIMP), and the DarkSide-50 (DS) experiment i s a direct search for evidence of WIMP-nuclear collisions. DS is located undergr ound at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy, and consists of thr ee active, embedded components; an outer water veto (CTF), a liquid scintillato r veto (LSV), and a liquid argon (LAr) time projection chamber (TPC). This pap er describes the data acquisition and electronic systems of the DS detectors , designed to detect the residual ionization from s
Published: 2014

20. Recent results from Borexino

Author: G Testera, M Agostin, K Altenmüller, S Appel, G Bellini, J Benziger, D Bick, G Bonfini, D Bravo, B Caccianiga, F Calaprice, A Caminata, P Cavalcante, A Chepurnov, D D’Angelo, S Davini, A Derbin, L Di Noto, I Drachnev, A Etenko, K Fomenko, D Franco, F Gabriele, C Galbiati, C Ghiano, M Giammarchi, M Göger-Neff, A Goretti, M Gromov, C Hagner, E Hungerford, Aldo Ianni, Andrea Ianni, K Jedrzejczak, M Kaiser, V Kobychev, D Korablev, G Korga, D Kryn, M Laubenstein, B Lehnert, E Litvinovich, F Lombardi, P Lombardi, L Ludhova, G Lukyanchenko, I Machulin, S Manecki, W Maneschg, S Marcocci, E Meroni, M Meyer, L Miramonti, M Misiaszek, M Montuschi, P Mosteiro, V Muratova, B Neumair, L Oberauer, M Obolensky, F Ortica, M Pallavicini, L Papp, L Perasso, A Pocar, G Ranucci, A Razeto, A Re, A Romani, R Roncin, N Rossi, S Schönert, D Semenov, H Simgen, M Skorokhvatov, O Smirnov, A Sotnikov, S Sukhotin, Y Suvorov, R Tartaglia, J Thurn, M Toropova, E Unzhakov, A Vishneva, RB Vogelaar, F von Feilitzsch, H Wang, S Weinz, J Winter, M Wojcik, M Wurm, Z Yokley, O Zaimidoroga, S Zavatarelli, K Zuber, G Zuzel, 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 de Paris (UP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: History, neutrino: solar, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, energy spectrum, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Computer Science Applications, Education, Physics and Astronomy (all), 0103 physical sciences, charge: conservation law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Borexino, 010306 general physics, experimental results, energy: low
Abstract: International audience; We review the solar neutrinos results of Borexino and the limit on the charge conservation obtained in the context of the analysis of the low energy region of the energy spectrum.
Published: 2016
Full Text: View/download PDF

21. DarkSide-50 : a WIMP search with a two-phase argon TPC

Author: P.D. Meyers, P. Agnes, D. Alton, K. Arisaka, H.O. Back, B. Baldin, K. Biery, G. Bonfini, M. Bossa, A. Brigatti, J. Brodsky, F. Budano, L. Cadonati, F. Calaprice, N. Canci, A. Candela, H. Cao, M. Cariello, P. Cavalcante, A. Chavarria, A. Chepurnov, A.G. Cocco, L. Crippa, D. DAngelo, M. D’Incecco, S. Davini, M. De Deo, A. Derbin, F. Di Eusanio, G. Di Pietro, E. Edkins, A. Empl, A. Fan, G. Fiorillo, K. Fomenko, G. Forster, D. Franco, F. Gabriele, C. Galbiati, A. Goretti, L. Grandi, M. Gromov, M. Guan, Y. Guardincerri, B. Hackett, K. Herner, P. Humble, E.V. Hungerford, Al. Ianni, An. Ianni, C. Joliet, K. Keeter, C. Kendziora, S. Kidner, V. Kobychev, G. Koh, D. Korablev, G. Korga, A. Kurlej, P. Li, B. Loer, P. Lombardi, C. Love, L. Ludhova, S. Luitz, Y. Ma, I. Machulin, A. Mandarano, S. Mari, J. Maricic, C.J. Martoff, A. Meregaglia, E. Meroni, R. Milincic, D. Montanari, M. Montuschi, M.E. Monzani, P. Mosteiro, B. Mount, V. Muratova, P. Musico, A. Nelson, M. Okounkova, M. Orsini, F. Ortica, L. Pagani, M. Pallavicini, E. Pantic, L. Papp, S. Parmeggiano, R. Parsells, K. Pelczar, N. Pelliccia, S. Perasso, F. Perfetto, A. Pocar, S. Pordes, H. Qian, K. Randle, G. Ranucci, A. Razeto, B. Reinhold, A. Romani, B. Rossi, N. Rossi, S.D. Rountree, D. Sablone, P. Saggese, R. Saldanha, W. Sands, E. Segreto, D. Semenov, E. Shields, M. Skorokhvatov, O. Smirnov, A. Sotnikov, Y. Suvarov, R. Tartaglia, J. Tatarowicz, G. Testera, A. Tonazzo, E. Unzhakov, R.B. Vogelaar, M. Wada, H. Wang, Y. Wang, A. Watson, R. Westerdale, M. Wojcik, A. Wright, J. Xu, C. Yang, J. Yoo, S. Zavatarelli, G. Zuzel, Agnes, P., Alton, D., Arisaka, K., Back, H. O., Baldin, B., Biery, K., Bonfini, G., Bossa, M., Brigatti, A., Brodsky, J., Budano, F., Cadonati, L., Calaprice, F., Canci, N., Candela, A., Cao, H., Cariello, M., Cavalcante, P., Chavarria, A., Chepurnov, A., Cocco, A. G., Crippa, L., Dangelo, D., D’Incecco, M., Davini, S., De Deo, M., Derbin, A., Di Eusanio, F., Di Pietro, G., Edkins, E., Empl, A., Fan, A., Fiorillo, Giuliana, Fomenko, K., Forster, G., Franco, D., Gabriele, F., Galbiati, C., Goretti, A., Grandi, L., Gromov, M., Guan, M., Guardincerri, Y., Hackett, B., Herner, K., Humble, P., Hungerford, E. V., Ianni, A., Joliet, C., Keeter, K., Kendziora, C., Kidner, S., Kobychev, V., Koh, G., Korablev, D., Korga, G., Kurlej, A., Li, P., Loer, B., Lombardi, P., Love, C., Ludhova, L., Luitz, S., Ma, Y., Machulin, I., Mandarano, A., Mari, S., Maricic, J., Martoff, C. J., Meregaglia, A., Meroni, E., Meyers, P. D., Milincic, R., Montanari, D., Montuschi, M., Monzani, M. E., Mosteiro, P., Mount, B., Muratova, V., Musico, P., Nelson, A., Okounkova, M., Orsini, M., Ortica, F., Pagani, L., Pallavicini, M., Pantic, E., Papp, L., Parmeggiano, S., Parsells, R., Pelczar, K., Pelliccia, N., Perasso, S., Perfetto, F., Pocar, A., Pordes, S., Qian, H., Randle, K., Ranucci, G., Razeto, A., Reinhold, B., Romani, A., Rossi, B., Rossi, N., Rountree, S. D., Sablone, D., Saggese, P., Saldanha, R., Sands, W., Segreto, E., Semenov, D., Shields, E., Skorokhvatov, M., Smirnov, O., Sotnikov, A., Suvarov, Y., Tartaglia, R., Tatarowicz, J., Testera, G., Tonazzo, A., Unzhakov, E., Vogelaar, R. B., Wada, M., Wang, H., Wang, Y., Watson, A., Westerdale, R., Wojcik, M., Wright, A., Xu, J., Yang, C., Yoo, J., Zavatarelli, S., Zuzel, G., Mari, Stefano Maria, and The Darkside, Collaboration
Subjects: Physics, Cryostat, Argon, Time projection chamber, chemistry.chemical_element, WIMP Argon Programme, Scintillator, Physics and Astronomy(all), Nuclear physics, Physics and Astronomy (all), chemistry, WIMP, pacs:95.35.+d, 29.40.Mc, Neutron, Cherenkov radiation
Abstract: DarkSide-50 is a two phase argon TPC for direct dark matter detection which is installed at the Gran Sasso underground laboratory, Italy. DarkSide-50 has a 50-kg active volume and will make use of underground argon low in 39 Ar. The TPC is installed inside an active neutron veto made with boron-loaded high radiopurity liquid scintillator. The neutron veto is installed inside a 1000 m 3 water Cherenkov muon veto. The DarkSide-50 TPC and cryostat are assembled in two radon-free clean rooms to reduce radioactive contaminants. The overall design aims for a background free exposure after selection cuts are applied. The expected sensitivity for WIMP-nucleon cross section is of the order of 10 −45 cm 2 for WIMP masses around 100 GeV/c 2 . The commissioning and performance of the detector are described. Details of the low-radioactivity underground argon and other unique features of the projects are reported.
Published: 2015

22. Kaonic Hydrogen

Author: Michael Cargnelli, G. Beer, A. M. Bragadireanu, M. Cargnelli, C. Curceanu, Petrascu Petrascu, J.-P. Egger, H. Fuhrmann, M. Giersch, C. Guaraldo, M. Iliescu, T. Ishiwatari, K. Itahashi, M. Iwasaki, P. Kienle, B. Lauss, V. Lucherini, L. Ludhova, J. Marton, F. Mulhauser, T. Ponta, L. A. Schaller, D. L. Sirghi, F. Sirghi, and J. Zmeskal
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Kaonic hydrogen, Scattering, Nuclear Theory, Strong interaction, Sigma, law.invention, Nuclear physics, Deuterium, law, Isospin, Physics::Atomic Physics, Nuclear Experiment, Collider
Abstract: The objective of the DEAR experiment is a precision measurement of the strong interaction shifts and widths of the K-series lines in kaonic hydrogen and the first observation of the same quantities in kaonic deuterium. These results will allow a precise determination of the isospin dependent kaon-nucleon scattering lengths and will help to determine the kaon-nucleon sigma terms. With the present performance of the DAFNE collider a kaonic hydrogen measurement with a precision better than the best existing experiment seems feasible now. In a preparing experiment kaonic nitrogen X rays were measured.
Published: 2003
Full Text: View/download PDF

23. Geo-neutrinos

Author: L. Ludhova
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Physics::Geophysics
Abstract: Geo-neutrinos, electron anti-neutrinos produced in β-decays of naturally occurring radioactive isotopes in the Earth, are a unique direct probe of our planet's interior. After a brief introduction about the Earth (mostly for physicists) and the very basics about the neutrinos and anti-neutrinos (mostly for geologists), I describe the geo-neutrinos' properties and the main aims of their study. An overview of the latest experimental results obtained by KamLand and Borexino experiments is provided. A short overview of future perspectives of this new inter-disciplinary field is given.
Published: 2012
Full Text: View/download PDF

24. New experimental limits on the Pauli-forbidden transitions inC12nuclei obtained with485days Borexino data

Author: G. Bellini, S. Bonetti, M. Buizza Avanzini, B. Caccianiga, D. D’Angelo, D. Franco, M. Giammarchi, P. Lombardi, L. Ludhova, E. Meroni, L. Miramonti, L. Perasso, G. Ranucci, A. Re, Y. Suvorov, J. Benziger, L. Cadonati, A. Pocar, F. Calaprice, A. Chavarria, F. Dalnoki-Veress, C. Galbiati, A. Goretti, Andrea Ianni, M. Leung, B. Loer, R. Saldanha, J. Xu, C. Carraro, S. Davini, E. Guardincerri, G. Manuzio, M. Pallavicini, S. Perasso, P. Risso, C. Salvo, G. Testera, S. Zavatarelli, H. de Kerret, D. Kryn, M. Obolensky, D. Vignaud, A. Derbin, V. Muratova, A. Etenko, E. Litvinovich, I. Machulin, A. Sabelnikov, M. Skorokhvatov, S. Sukhotin, K. Fomenko, O. Smirnov, A. Sotnikov, O. Zaimidoroga, S. Gazzana, C. Ghiano, Aldo Ianni, G. Korga, D. Montanari, A. Razeto, R. Tartaglia, M. Goeger-Neff, T. Lewke, Q. Meindl, L. Oberauer, F. von Feilitzsch, Y. Winter, M. Wurm, C. Grieb, S. Hardy, M. Joyce, S. Manecki, L. Papp, R. S. Raghavan, D. Rountree, R. B. Vogelaar, W. Maneschg, S. Schönert, H. Simgen, G. Zuzel, M. Misiaszek, M. Wojcik, F. Ortica, and A. Romani
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, Particle physics, 010308 nuclear & particles physics, Hadron, Carbon-12, Elementary particle, Fermion, 01 natural sciences, 7. Clean energy, Baryon, 0103 physical sciences, 010306 general physics, Nucleon, Lepton
Abstract: The Pauli exclusion principle (PEP) has been tested for nucleons ($n,p$) in $^{12}C$ with the Borexino detector.The approach consists of a search for $\gamma$, $n$, $p$ and $\beta^\pm$ emitted in a non-Paulian transition of 1$P_{3/2}$- shell nucleons to the filled 1$S_{1/2}$ shell in nuclei. Due to the extremely low background and the large mass (278 t) of the Borexino detector, the following most stringent up-to-date experimental bounds on PEP violating transitions of nucleons have been established: $\tau({^{12}\rm{C}}\to{^{12}\widetilde{\rm{C}}}+\gamma) \geq 5.0\cdot10^{31}$ y, $\tau({^{12}\rm{C}}\to{^{11}\widetilde{\rm{B}}}+ p) \geq 8.9\cdot10^{29}$ y, $\tau({^{12}\rm{C}}\to{^{11}\widetilde{\rm{C}}}+ n) \geq 3.4 \cdot 10^{30}$ y, $\tau({^{12}\rm{C}}\to{^{12}\widetilde{\rm{N}}}+ e^- + \widetilde{\nu_e}) \geq 3.1\cdot 10^{30}$ y and $\tau({^{12}\rm{C}}\to{^{12}\widetilde{\rm{B}}}+ e^+ + \nu_e) \geq 2.1 \cdot 10^{30}$ y, all at 90% C.L. The corresponding upper limits on the relative strengths for the searched non-Paulian electromagnetic, strong and weak transitions have been estimated: $\delta^2_{\gamma} \leq 2.2\cdot10^{-57}$, $\delta^2_{N} \leq 4.1\cdot10^{-60}$ and $\delta^2_{\beta} \leq 2.1\cdot10^{-35}$.
Published: 2010
Full Text: View/download PDF

25. First results on 7Be solar neutrinos from the Borexino real time detector

Author: G Bellini, J Benziger, S Bonetti, B Caccianiga, F Calaprice, F Dalnoki-Veress, D D'Angelo, H de Kerret, A Derbin, A Etenko, K Fomenko, R Ford, D Franco, C Galbiati, S Gazzana, M Giammarchi, M Goeger-Neff, A Goretti, C Grieb, S Hardy, G Heusser, A Ianni, M Joyce, G Korga, D Kryn, M Laubenstein, M Leung, E Litvinovich, P Lombardi, L Ludhova, I Machulin, G Manuzio, F Masetti, K McCarty, E Meroni, L Miramonti, M Misiaszek, D Montanari, M E Monzani, V Muratova, L Niedermeier, L Oberauer, M Obolensky, F Ortica, M Pallavicini, L Papp, L Perasso, A Pocar, R S Raghavan, G Ranucci, A Razeto, A Sabelnikov, C Salvo, S Schönert, H Simgen, O Smirnov, M Skorokhvatov, A Sonnenschein, A Sotnikov, S Sukhotin, Y Suvorov, V Tarasenkov, R Tartaglia, G Testera, D Vignaud, R B Vogelaar, F von Feilitzsch, M Wojcik, O Zaimidoroga, S Zavatarelli, G Zuzel, the Borexino Collaboration, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Borexino, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: Physics, History, Particle physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Solar neutrino, Detector, Solar neutrino problem, 01 natural sciences, 7. Clean energy, Computer Science Applications, Education, Nuclear physics, Neutrino detector, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, 010306 general physics, Order of magnitude, Borexino
Abstract: International audience; The Borexino experiment started the data taking may 15th 2007. It is until now the only experiment able to detect in real time neutrino interactions below 2 MeV. This is due to the very high radio-purity reached by the detector, more than one order of magnitude better than the goal of the design. The detector allows the single fluxes of low energy solar neutrinos to be determined from all sources not previously studied: 7Be, pep, CNO and hopefully pp. Here the first measurement of the 7Be, obtained from the first 47.6 live days of data taking, is presented.
Published: 2008
Full Text: View/download PDF

26. Limiting the effective magnetic moment of solar neutrinos with the Borexino detector.

Author: L Ludhova and Collaboration, Borexino
Published: 2020
Full Text: View/download PDF

27. Solar neutrino physics with Borexino

Author: Andrea Pocar, M. Agostini, K. Altenmüller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, G. Bonfini, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, L. Cappelli, S. Caprioli, M. Carlini, P. Cavalcante, F. Cavanna, A. Chepurnov, K. Choi, L. Collica, D. D’Angelo, S. Davini, A. Derbin, X. F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, K. Fomenko, A. Formozov, D. Franco, F. Gabriele, C. Galbiati, M. Gschwender, C. Ghiano, M. Giammarchi, A. Goretti, M. Gromov, D. Guffanti, T. Houdy, E. Hungerford, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, S. Kumaran, V. Kobychev, G. Korga, T. Lachenmaier, M. Laubenstein, E. Litvinovich, P. Lombardi, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, G. Manuzio, S. Marcocci, J. Maricic, J. Martyn, E. Meroni, M. Meyer, L. Miramonti, M. Misiaszek, V. Muratova, B. Neumair, M. Nieslony, L. Oberauer, V. Orekhov, F. Ortica, M. Pallavicini, L. Papp, Ö. Penek, L. Pietrofaccia, N. Pilipenko, A. Porcelli, G. Raikov, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Rottenanger, S. Schönert, D. Semenov, M. Skorokhvatov, O. Smirnov, A. Sotnikov, L. F. F. Stokes, Y. Suvorov , R. Tartaglia, G. Testera, J. Thurn, E. Unzhakov, A. Vishneva, R. B. Vogelaar, F. von Feilitzsch, S. Weinz, M. Wojcik, M. Wurm, O. Zaimidoroga, S. Zavatarelli, K. Zuber, G. Zuzel
Subjects: Physics, QC1-999
Abstract: We present the most recent solar neutrino results from the Borexino experiment at the Gran Sasso underground laboratory. In particular, refined measurements of all neutrinos produced in the {\it pp} fusion chain have been made. It is the first time that the same detector measures the entire range of solar neutrinos at once. These new data weakly favor a high-metallicity Sun. Prospects for measuring CNO solar neutrinos are also discussed.
Published: 2019
Full Text: View/download PDF

28. Light Detection in Noble Elements (LIDINE 2013)

Author: T. Alexanderaa, D. Altonb, K. Arisakax, H. O. Backm, P. Beltramex, J. Benzigerl, G. Bonfinii, A. Brigattis, J. Brodskym, S. Bussinov, L. Cadonatiaa, F. Calapricem, A. Candelai, H. Caom, P. Cavalcantei, A. Chepurnovj, S. Chidzikm, A. G. Coccot, C. Condonm, D. D'Angelos, S. Daviniz, M. De Vincenziv, E. De Haasm, A. Derbinn, G. Di Pietros, I. Dratchnevn, D. Durbenc, A. Emplz, A. Etenkok, A. Fanx, G. Fiorillot, D. Francoa, K. Fomenkoi, G. Forsteraa, F. Gabrielem, C. Galbiatim, S. Gazzanai, C. Ghianoi, A. Gorettim, L. Grandim, M. Gromovj, M. Guane, C. Guoe, G. Guraym, E. V. Hungerfordz, Al Iannii, An Iannim, C. Jolietp, A. Kayunovn, K. Keeterc, C. Kendziorad, S. Kidnerab, R. Klemmerm, V. Kobychevf, G. Kohm, M. Komorm, D. Korablevh, G. Korgaz, P. Lie, B. Loerd, P. Lombardis, C. Loveq, L. Ludhovas, S. Luitzo, L. Lukyanchenkoj, A. Lundaa, K. Lungx, Y. Mae, I. Machulink, v, J. Maricicy, C. J. Martoffq, A. Meregagliap, E. Meronis, P. Meyersm, T. Mohayaim, D. Montanarid, M. Montuschii, M. E. Monzanio, P. Mosteirom, B. Mountc, V. Muratovan, A. Nelsonm, A. Nemtzowaa, N. Nurakhovk, M. Orsinii, F. Orticau, M. Pallavicinir, E. Panticx, S. Parmeggianos, R. Parsellsm, N. Pellicciau, L. Perassor, S. Perassoa, F. Perfettot, L. Pinskyz, A. Pocaraa, S. Pordesd, K. Randleaa, G. Ranuccis, A. Razetoi, A. Romaniu, B. Rossim, t, N. Rossii, m, S. D. Rountreeab, P. Saggesei, R. Saldanhai, C. Salvor, W. Sandsm, M. Seigarw, D. Semenovn, E. Shieldsm, M. Skorokhvatovk, O. Smirnovh, A. Sotnikovh, S. Sukhotink, Y. Suvarovx, R. Tartagliai, J. Tatarowiczq, G. Testerar, J. Thompsonc, A. Tonazzoa, E. Unzhakovn, R. B. Vogelaarab, H. Wangx, S. Westerdalem, M. Wojcikg, A. Wrightm, J. Xum, C. Yange, S. Zavatarellir, M. Zehfusc, W. Zhonge, G. Zuzelg, MARI, Stefano Maria, T., Alexanderaa, D., Altonb, K., Arisakax, H. O., Backm, P., Beltramex, J., Benzigerl, G., Bonfinii, A., Brigatti, J., Brodskym, S., Bussinov, L., Cadonatiaa, F., Calapricem, A., Candelai, H., Caom, P., Cavalcantei, A., Chepurnovj, S., Chidzikm, A. G., Coccot, C., Condonm, D., D'Angelo, S., Daviniz, M., De Vincenziv, E., De Haasm, A., Derbinn, G., Di Pietro, I., Dratchnevn, D., Durbenc, A., Emplz, A., Etenkok, A., Fanx, G., Fiorillot, D., Francoa, K., Fomenkoi, G., Forsteraa, F., Gabrielem, C., Galbiatim, S., Gazzanai, C., Ghianoi, A., Gorettim, L., Grandim, M., Gromovj, M., Guane, C., Guoe, G., Guraym, E. V., Hungerfordz, Al, Iannii, An, Iannim, C., Jolietp, A., Kayunovn, K., Keeterc, C., Kendziorad, S., Kidnerab, R., Klemmerm, V., Kobychevf, G., Kohm, M., Komorm, D., Korablevh, G., Korgaz, P., Lie, B., Loerd, P., Lombardi, C., Loveq, L., Ludhova, S., Luitzo, L., Lukyanchenkoj, A., Lundaa, K., Lungx, Y., Mae, I., Machulink, Mari, Stefano Maria, V, J., Maricicy, C. J., Martoffq, A., Meregagliap, E., Meroni, P., Meyersm, T., Mohayaim, D., Montanarid, M., Montuschii, M. E., Monzanio, P., Mosteirom, B., Mountc, V., Muratovan, A., Nelsonm, A., Nemtzowaa, N., Nurakhovk, M., Orsinii, F., Orticau, M., Pallavicinir, E., Panticx, S., Parmeggiano, R., Parsellsm, N., Pellicciau, L., Perassor, S., Perassoa, F., Perfettot, L., Pinskyz, A., Pocaraa, S., Pordesd, K., Randleaa, G., Ranucci, A., Razetoi, A., Romaniu, B., Rossim, T, N., Rossii, M, S. D., Rountreeab, P., Saggesei, R., Saldanhai, C., Salvor, W., Sandsm, M., Seigarw, D., Semenovn, E., Shieldsm, M., Skorokhvatovk, O., Smirnovh, A., Sotnikovh, S., Sukhotink, Y., Suvarovx, R., Tartagliai, J., Tatarowiczq, G., Testerar, J., Thompsonc, A., Tonazzoa, E., Unzhakovn, R. B., Vogelaarab, H., Wangx, S., Westerdalem, M., Wojcikg, A., Wrightm, J., Xum, C., Yange, S., Zavatarellir, M., Zehfusc, W., Zhonge, and G., Zuzelg
Subjects: Noble-liquid detectors (scintillation, ionization two-phase), Dark Matter detectors (WIMPs, axions, etc.), Physics::Instrumentation and Detectors, High Energy Physics::Experiment
Abstract: The DarkSide staged program utilizes a two-phase time projection chamber (TPC) with liquid argon as the target material for the scattering of dark matter particles. Efficient background reduction is achieved using low radioactivity underground argon as well as several experimental handles such as pulse shape, ratio of ionization over scintillation signal, 3D event reconstruction, and active neutron and muon vetos. The DarkSide-10 prototype detector has proven high scintillation light yield, which is a particularly important parameter as it sets the energy threshold for the pulse shape discrimination technique. The DarkSide-50 detector system, currently in commissioning phase at the Gran Sasso Underground Laboratory, will reach a sensitivity to dark matter spin-independent scattering cross section of 10−45 cm2 within 3 years of operation.
Published: 2013

29. DarkSide search for dark matter

Author: I. N. Machulin, R. Klemmer, Marco Pallavicini, N. Rossi, G. Forster, K. Fomenko, W. Sands, G. Di Pietro, H. Cao, D. D'Angelo, M. Komor, A. Razeto, N. N. Nurakhov, R. Saldanha, S. Parmeggiano, A. Nemtzow, E. Shields, F. Perfetto, Min-Xin Guan, M. Gromov, K. Randle, E. V. Unzhakov, S. Bussino, M. Orsini, M. Montuschi, E. Meroni, G. Korga, Austin P. Lund, Marc S. Seigar, A. Tonazzo, E. de Haas, G. Testera, L. Lukyanchenko, S. Gazzana, M. D. Skorokhvatov, B. Rossi, M. De Vincenzi, J. Maricic, L. Grandi, G. Zuzel, Laura Cadonati, M. E. Monzani, Yanhui Ma, D. Durben, M. Zehfus, B. J. Mount, Chung-Yao Yang, Augusto Brigatti, Lawrence Pinsky, A. Kayunov, R. B. Vogelaar, A. Meregaglia, S. Chidzik, C. Joliet, C. Condon, C. Ghiano, A. Pocar, N. Pelliccia, C. L. Kendziora, P. Saggese, A. Nelson, Sandra Zavatarelli, P. X. Li, O. Smirnov, S. Westerdale, Livia Ludhova, A. M. Goretti, A. S. Chepurnov, Thomas Alexander, S. Pordes, E. V. Hungerford, G. Koh, G. Guray, A. Sotnikov, Fausto Ortica, C. Guo, D. A. Semenov, R. Tartaglia, E. Pantic, K. Arisaka, G. Fiorillo, D. Korablev, I. Dratchnev, C. J. Martoff, Frank Calaprice, J. Brodsky, J. Tatarowicz, K. Keeter, Gioacchino Ranucci, Marcin Wójcik, D. Franco, W. Zhong, P. Cavalcante, Henning O. Back, G. Bonfini, P. Beltrame, P. D. Meyers, J. Thompson, An. Ianni, V. N. Muratova, L. Perasso, D. Alton, C. Salvo, S. Perasso, A.V. Etenko, R. Parsells, S. Davini, A. G. Cocco, Al. Ianni, Stefano Maria Mari, S. Luitz, Han Wang, P. J. Mosteiro, F. Gabriele, Jingke Xu, Cristiano Galbiati, D. Montanari, A. Fan, A. Empl, S. Kidner, S. V. Sukhotin, A. Wright, V. V. Kobychev, K. Lung, C. Love, T. Mohayai, A. Candela, S. D. Rountree, Paolo Lombardi, Aldo Romani, B Loer, A. V. Derbin, Y Suvarov, Jay Burton Benziger, T., Alexander, D., Alton, K., Arisaka, H. O., Back, P., Beltrame, J., Benziger, G., Bonfini, A., Brigatti, J., Brodsky, S., Bussino, L., Cadonati, F., Calaprice, A., Candela, H., Cao, P., Cavalcante, A., Chepurnov, S., Chidzik, A. G., Cocco, C., Condon, D., D'Angelo, S., Davini, M. D., Vincenzi, E. D., Haa, A., Derbin, G. D., Pietro, I., Dratchnev, D., Durben, A., Empl, A., Etenko, A., Fan, Fiorillo, Giuliana, D., Franco, K., Fomenko, G., Forster, F., Gabriele, C., Galbiati, S., Gazzana, C., Ghiano, A., Goretti, L., Grandi, M., Gromov, M., Guan, C., Guo, G., Guray, E. V., Hungerford, A., Ianni, C., Joliet, A., Kayunov, K., Keeter, C., Kendziora, S., Kidner, R., Klemmer, V., Kobychev, G., Koh, M., Komor, D., Korablev, G., Korga, P., Li, B., Loer, P., Lombardi, C., Love, L., Ludhova, S., Luitz, L., Lukyanchenko, A., Lund, K., Lung, Y., Ma, I., Machulin, S., Mari, J., Maricic, C. J., Martoff, A., Meregaglia, E., Meroni, P., Meyer, T., Mohayai, D., Montanari, M., Montuschi, M. E., Monzani, P., Mosteiro, B., Mount, V., Muratova, A., Nelson, A., Nemtzow, N., Nurakhov, M., Orsini, F., Ortica, M., Pallavicini, E., Pantic, S., Parmeggiano, R., Parsell, N., Pelliccia, L., Perasso, S., Perasso, Perfetto, Francesco, L., Pinsky, A., Pocar, S., Porde, K., Randle, G., Ranucci, A., Razeto, A., Romani, B., Rossi, N., Rossi, S. D., Rountree, P., Saggese, R., Saldanha, C., Salvo, W., Sand, M., Seigar, D., Semenov, E., Shield, M., Skorokhvatov, O., Smirnov, A., Sotnikov, S., Sukhotin, Y., Suvarov, R., Tartaglia, J., Tatarowicz, G., Testera, J., Thompson, A., Tonazzo, E., Unzhakov, R. B., Vogelaar, H., Wang, S., Westerdale, M., Wojcik, A., Wright, J., Xu, C., Yang, S., Zavatarelli, M., Zehfu, W., Zhong, G., Zuzel, Physics Department, Amherst U., University of Massachusetts System (UMASS), Biomécanique et Bioingénierie (BMBI), Université de Technologie de Compiègne (UTC)-Centre National de la Recherche Scientifique (CNRS), Régulation de l'expression génétique chez les microorganismes (REGCM), Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire Kastler Brossel (LKB (Jussieu)), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), departement de physique, Albert-Ludwigs-Universität Freiburg, SLAC National Accelerator Laboratory (SLAC), Stanford University, Anhui University [Hefei], Physics Department, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Department of Geological Sciences, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Università degli studi di Genova = University of Genoa (UniGe), Departamento de Engenharia Elétrica [Minas Gerais] (DEE - UFMG), Universidade Federal de Minas Gerais, Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Rhodes University, Grahamstown, EAST CHINA UNIVERSITY, KEY LAB, Institute of Physics, Polish Academy of Sciences, Polska Akademia Nauk = Polish Academy of Sciences (PAN), International Iberian Nanotechnology Laboratory (INL), Centre de Recherche en Information Biomédicale sino-français (CRIBS), Université de Rennes (UR)-Southeast University [Jiangsu]-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Européen des membranes (IEM), Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Alexander, T, Alton, D, Arisaka, K, Back, Ho, Beltrame, P, Benziger, J, Bonfini, G, Brigatti, A, Brodsky, J, Bussino, Severino Angelo Maria, Cadonati, L, Calaprice, F, Candela, A, Cao, H, Cavalcante, P, Chepurnov, A, Chidzik, S, Cocco, Ag, Condon, C, D'Angelo, D, Davini, S, DE VINCENZI, Mario, De Haas, E, Derbin, A, Di Pietro, G, Dratchnev, I, Durben, D, Empl, A, Etenko, A, Fan, A, Fiorillo, G, Franco, D, Fomenko, K, Forster, G, Gabriele, F, Galbiati, C, Gazzana, S, Ghiano, C, Goretti, A, Grandi, L, Gromov, M, Guan, M, Guo, C, Guray, G, Hungerford, Ev, Ianni, Al, Ianni, An, Joliet, C, Kayunov, A, Keeter, K, Kendziora, C, Kidner, S, Klemmer, R, Kobychev, V, Koh, G, Komor, M, Korablev, D, Korga, G, Li, P, Loer, B, Lombardi, P, Love, C, Ludhova, L, Luitz, S, Lukyanchenko, L, Lund, A, Lung, K, Ma, Y, Machulin, I, Mari, Stefano Maria, Maricic, J, Martoff, Cj, Meregaglia, A, Meroni, E, Meyers, P, Mohayai, T, Montanari, D, Montuschi, M, Monzani, Me, Mosteiro, P, Mount, B, Muratova, V, Nelson, A, Nemtzow, A, Nurakhov, N, Orsini, M, Ortica, F, Pallavicini, M, Pantic, E, Parmeggiano, S, Parsells, R, Pelliccia, N, Perasso, L, Perasso, S, Perfetto, F, Pinsky, L, Pocar, A, Pordes, S, Randle, K, Ranucci, G, Razeto, A, Romani, A, Rossi, B, Rossi, N, Rountree, Sd, Saggese, P, Saldanha, R, Salvo, C, Sands, W, Seigar, M, Semenov, D, Shields, E, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Sukhotin, S, Suvarov, Y, Tartaglia, R, Tatarowicz, J, Testera, G, Thompson, J, Tonazzo, A, Unzhakov, E, Vogelaar, Rb, Wang, H, Westerdale, S, Wojcik, M, Wright, A, Xu, J, Yang, C, Zavatarelli, S, Zehfus, M, Zhong, W, Zuzel, G., Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Dip. di Fisica dell'Università di Genova - Italy, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Southeast University [Jiangsu]-Institut National de la Santé et de la Recherche Médicale (INSERM), and Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)
Subjects: Physics::Instrumentation and Detectors, Dark matter, chemistry.chemical_element, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Neutron, Dark Matter detector, 010306 general physics, Instrumentation, Mathematical Physics, ComputingMilieux_MISCELLANEOUS, Event reconstruction, Physics, [PHYS]Physics [physics], Scintillation, Argon, Time projection chamber, 010308 nuclear & particles physics, Detector, chemistry, Scintillation counter, High Energy Physics::Experiment, Noble liquid detector, DarkSide detector, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: "The DarkSide staged program utilizes a two-phase time projection chamber (TPC) with liquid argon as the target material for the scattering of dark matter particles. Efficient background reduction is achieved using low radioactivity underground argon as well as several experimental handles such as pulse shape, ratio of ionization over scintillation signal, 3D event reconstruction, and active neutron and muon vetos. The DarkSide-10 prototype detector has proven high scintillation light yield, which is a particularly important parameter as it sets the energy threshold for the pulse shape discrimination technique. The DarkSide-50 detector system, currently in commissioning phase at the Gran Sasso Underground Laboratory, will reach a sensitivity to dark matter spin-independent scattering cross section of 10(-45) cm(2) within 3 years of operation."
Published: 2013
Full Text: View/download PDF

30. Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory.

Author: Miramonti L, Bellini G, Benziger J, Bick D, Bonfini G, Bravo D, Buizza Avanzini M, Caccianiga B, Cadonati L, Calaprice F, Carraro C, Cavalcante P, Chavarria A, Chubakov V, D'Angelo D, Davini S, Derbin A, Etenko A, Fomenko K, Franco D, Galbiati C, Gazzana S, Ghiano C, Giammarchi M, Göger-Neff M, Goretti A, Grandi L, Guardincerri E, Hardy S, Ianni A, Ianni A, Kobychev V, Korablev D, Korga G, Koshio Y, Kryn D, Laubenstein M, Lewke T, Lissia M, Litvinovich E, Loer B, Lombardi F, Lombardi P, Ludhova L, Machulin I, Manecki S, Maneschg W, Mantovani F, Manuzio G, Meindl Q, Meroni E, Misiaszek M, Montanari D, Mosteiro P, Muratova V, Nisi S, Oberauer L, Obolensky M, Ortica F, Otis K, Pallavicini M, Papp L, Perasso L, Perasso S, Pocar A, Ranucci G, Razeto A, Re A, Romani A, Rossi N, Sabelnikov A, Saldanha R, Salvo C, Schönert S, Simgen H, Skorokhvatov M, Smirnov O, Sotnikov A, Sukhotin S, Suvorov Y, Tartaglia R, Testera G, Vignaud D, Vogelaar RB, von Feilitzsch F, Winter J, Wojcik M, Wright A, Wurm M, Xhixha G, Xu J, Zaimidoroga O, Zavatarelli S, and Zuzel G
Subjects: Alpha Particles, Half-Life, Laboratories, Radiation Monitoring, Lead Radioisotopes analysis, Polonium analysis, Radioactive Pollutants analysis
Abstract: The decays of (214)Po into (210)Pb and of (212)Po into (208)Pb tagged by the previous decays from (214)Bi and (212)Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We find that the mean lifetime of (214)Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of (212)Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results are compatible with previous measurements, have a much better signal to background ratio, and reduce the overall uncertainties., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
Published: 2014
Full Text: View/download PDF

31. Is the proton radius a player in the redefinition of the International System of Units?

Author: Nez F, Antognini A, Amaro FD, Biraben F, Cardoso JM, Covita D, Dax A, Dhawan S, Fernandes L, Giesen A, Graf T, Hänsch TW, Indelicato P, Julien L, Kao CY, Knowles PE, Le Bigot E, Liu YW, Lopes JA, Ludhova L, Monteiro CM, Mulhauser F, Nebel T, Rabinowitz P, dos Santos JM, Schaller L, Schuhmann K, Schwob C, Taqqu D, Veloso JF, Kottmann F, and Pohl R
Abstract: It is now recognized that the International System of Units (SI units) will be redefined in terms of fundamental constants, even if the date when this will occur is still under debate. Actually, the best estimate of fundamental constant values is given by a least-squares adjustment, carried out under the auspices of the Committee on Data for Science and Technology (CODATA) Task Group on Fundamental Constants. This adjustment provides a significant measure of the correctness and overall consistency of the basic theories and experimental methods of physics using the values of the constants obtained from widely differing experiments. The physical theories that underlie this adjustment are assumed to be valid, such as quantum electrodynamics (QED). Testing QED, one of the most precise theories is the aim of many accurate experiments. The calculations and the corresponding experiments can be carried out either on a boundless system, such as the electron magnetic moment anomaly, or on a bound system, such as atomic hydrogen. The value of fundamental constants can be deduced from the comparison of theory and experiment. For example, using QED calculations, the value of the fine structure constant given by the CODATA is mainly inferred from the measurement of the electron magnetic moment anomaly carried out by Gabrielse's group. (Hanneke et al. 2008 Phys. Rev. Lett. 100, 120801) The value of the Rydberg constant is known from two-photon spectroscopy of hydrogen combined with accurate theoretical quantities. The Rydberg constant, determined by the comparison of theory and experiment using atomic hydrogen, is known with a relative uncertainty of 6.6×10(-12). It is one of the most accurate fundamental constants to date. A careful analysis shows that knowledge of the electrical size of the proton is nowadays a limitation in this comparison. The aim of muonic hydrogen spectroscopy was to obtain an accurate value of the proton charge radius. However, the value deduced from this experiment contradicts other less accurate determinations. This problem is known as the proton radius puzzle. This new determination of the proton radius may affect the value of the Rydberg constant . This constant is related to many fundamental constants; in particular, links the two possible ways proposed for the redefinition of the kilogram, the Avogadro constant N(A) and the Planck constant h. However, the current relative uncertainty on the experimental determinations of N(A) or h is three orders of magnitude larger than the 'possible' shift of the Rydberg constant, which may be shown by the new value of the size of the proton radius determined from muonic hydrogen. The proton radius puzzle will not interfere in the redefinition of the kilogram. After a short introduction to the properties of the proton, we will describe the muonic hydrogen experiment. There is intense theoretical activity as a result of our observation. A brief summary of possible theoretical explanations at the date of writing of the paper will be given. The contribution of the proton radius puzzle to the redefinition of SI-based units will then be examined.
Published: 2011
Full Text: View/download PDF

32. The size of the proton.

Author: Pohl R, Antognini A, Nez F, Amaro FD, Biraben F, Cardoso JM, Covita DS, Dax A, Dhawan S, Fernandes LM, Giesen A, Graf T, Hänsch TW, Indelicato P, Julien L, Kao CY, Knowles P, Le Bigot EO, Liu YW, Lopes JA, Ludhova L, Monteiro CM, Mulhauser F, Nebel T, Rabinowitz P, Dos Santos JM, Schaller LA, Schuhmann K, Schwob C, Taqqu D, Veloso JF, and Kottmann F
Abstract: The proton is the primary building block of the visible Universe, but many of its properties-such as its charge radius and its anomalous magnetic moment-are not well understood. The root-mean-square charge radius, r(p), has been determined with an accuracy of 2 per cent (at best) by electron-proton scattering experiments. The present most accurate value of r(p) (with an uncertainty of 1 per cent) is given by the CODATA compilation of physical constants. This value is based mainly on precision spectroscopy of atomic hydrogen and calculations of bound-state quantum electrodynamics (QED; refs 8, 9). The accuracy of r(p) as deduced from electron-proton scattering limits the testing of bound-state QED in atomic hydrogen as well as the determination of the Rydberg constant (currently the most accurately measured fundamental physical constant). An attractive means to improve the accuracy in the measurement of r(p) is provided by muonic hydrogen (a proton orbited by a negative muon); its much smaller Bohr radius compared to ordinary atomic hydrogen causes enhancement of effects related to the finite size of the proton. In particular, the Lamb shift (the energy difference between the 2S(1/2) and 2P(1/2) states) is affected by as much as 2 per cent. Here we use pulsed laser spectroscopy to measure a muonic Lamb shift of 49,881.88(76) GHz. On the basis of present calculations of fine and hyperfine splittings and QED terms, we find r(p) = 0.84184(67) fm, which differs by 5.0 standard deviations from the CODATA value of 0.8768(69) fm. Our result implies that either the Rydberg constant has to be shifted by -110 kHz/c (4.9 standard deviations), or the calculations of the QED effects in atomic hydrogen or muonic hydrogen atoms are insufficient.
Published: 2010
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

32 results on '"L. Ludhova"'

1. Borexino’s search for low-energy neutrinos associated with gravitational wave events from GWTC-3 database

2. Search for low-energy signals from fast radio bursts with the Borexino detector

3. Identification of the cosmogenic $$^{11}$$ 11 C background in large volumes of liquid scintillators with Borexino

4. Theia: an advanced optical neutrino detector

5. Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II

6. First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso

7. Review article 'Geo-neutrinos'

8. The DarkSide Multiton Detector for the Direct Dark Matter Search

9. Neutrino Oscillations

10. Studying the Earth with Geoneutrinos

11. Ten years of cosmic muons observation with Borexino

12. Updated geoneutrino measurement with Borexino

13. Solar and geoneutrinos

14. First Cherenkov directional detection of sub-MeV solar neutrinos in Borexino

15. Observation of CNO cycle solar neutrinos in Borexino

16. Overview on solar, geo, and reactor neutrino experiments

17. DarkSide-50, a background free experiment for dark matter searches

18. First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso

19. The Electronics and Data Acquisition System of the DarkSide Dark Matter Search

20. Recent results from Borexino

21. DarkSide-50 : a WIMP search with a two-phase argon TPC

22. Kaonic Hydrogen

23. Geo-neutrinos

24. New experimental limits on the Pauli-forbidden transitions inC12nuclei obtained with485days Borexino data

25. First results on 7Be solar neutrinos from the Borexino real time detector

26. Limiting the effective magnetic moment of solar neutrinos with the Borexino detector.

27. Solar neutrino physics with Borexino

28. Light Detection in Noble Elements (LIDINE 2013)

29. DarkSide search for dark matter

30. Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory.

31. Is the proton radius a player in the redefinition of the International System of Units?

32. The size of the proton.

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

32 results on '"L. Ludhova"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources