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Based on the idea and the provided source code of Andrej Karpathy (arxiv-sanity)
Nuclear emulsions for the detection of micrometric-scale fringe patterns: an application to positron interferometry (1802.04074)
S. Aghion, A. Ariga, M. Bollani, A. Ereditato, R. Ferragut, M. Giammarchi, M. Lodari, C. Pistillo, S. Sala, P. Scampoli, M. Vladymyrov
April 11, 2018 hep-ex, physics.ins-det
Nuclear emulsions are capable of very high position resolution in the detection of ionizing particles. This feature can be exploited to directly resolve the micrometric-scale fringe pattern produced by a matter-wave interferometer for low energy positrons (in the 10-20 keV range). We have tested the performance of emulsion films in this specific scenario. Exploiting silicon nitride diffraction gratings as absorption masks, we produced periodic patterns with features comparable to the expected interferometer signal. Test samples with periodicities of 6, 7 and 20 {\mu}m were exposed to the positron beam, and the patterns clearly reconstructed. Our results support the feasibility of matter-wave interferometry experiments with positrons.
Study of tau-neutrino production at the CERN SPS (1708.08700)
S. Aoki, A. Ariga, T. Ariga, E. Firu, T. Fukuda, Y. Gornushkin, A.M. Guler, M. Haiduc, K. Kodama, M.A. Korkmaz, U. Kose, M. Nakamura, T. Nakano, A.T. Neagu, H. Rokujo, O. Sato, S. Vasina, M. Vladymyrov, M. Yoshimoto
Aug. 29, 2017 hep-ex, physics.ins-det
The DsTau project proposes to study tau-neutrino production in high-energy proton interactions. The outcome of this experiment are prerequisite for measuring the $\nu_\tau$ charged-current cross section that has never been well measured. Precisely measuring the cross section would enable testing of lepton universality in $\nu_\tau$ scattering and it also has practical implications for neutrino oscillation experiments and high-energy astrophysical $\nu_\tau$ observations. $D_s$ mesons, the source of tau neutrinos, following high-energy proton interactions will be studied by a novel approach to detect the double-kink topology of the decays $D_s \rightarrow \tau\nu_\tau$ and $\tau\rightarrow\nu_\tau X$. Directly measuring $D_s\rightarrow \tau$ decays will provide an inclusive measurement of the $D_s$ production rate and decay branching ratio to $\tau$. The momentum reconstruction of $D_s$ will be performed by combining topological variables. This project aims to detect 1,000 $D_s \rightarrow \tau$ decays in $2.3 \times 10^8$ proton interactions in tungsten target to study the differential production cross section of $D_s$ mesons. To achieve this, state-of-the-art emulsion detectors with a nanometric-precision readout will be used. The data generated by this project will enable the $\nu_\tau$ cross section from DONUT to be re-evaluated, and this should significantly reduce the total systematic uncertainty. Furthermore, these results will provide essential data for future $\nu_\tau$ experiments such as the $\nu_\tau$ program in the SHiP project at CERN. In addition, the analysis of $2.3 \times 10^8$ proton interactions, combined with the expected high yield of $10^5$ charmed decays as by-products, will enable the extraction of additional physical quantities.
Measurement of antiproton annihilation on Cu, Ag and Au with emulsion films (1701.06306)
S. Aghion, C. Amsler, A. Ariga, T. Ariga, G. Bonomi, P. Braunig, R. S. Brusa, L. Cabaret, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Consolati, A. Demetrio, L. Di Noto, M. Doser, A. Ereditato, C. Evans, R. Ferragut, J. Fesel, A. Fontana, S. Gerber, M. Giammarchi, A. Gligorova, F. Guatieri, S. Haider, A. Hinterberger, H. Holmestad, T. Huse, J. Kawada, A. Kellerbauer, M. Kimura, D. Krasnicky, V. Lagomarsino, P. Lansonneur, P. Lebrun, C. Malbrunot, S. Mariazzi, V. Matveev, Z. Mazzotta, S. R. Muller, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, D. Pagano, L. Penasa, V. Petracek, C. Pistillo, F. Prelz, M. Prevedelli, L. Ravelli, B. Rienaecker, O. M. Rohne, A. Rotondi, M. Sacerdoti, H. Sandaker, R. Santoro, P. Scampoli, M. Simon, L. Smestad, F. Sorrentino, G. Testera, I. C. Tietje, S. Vamosi, M. Vladymyrov, E. Widmann, P. Yzombard, C. Zimmer, J. Zmeskal, N. Zurlo
The characteristics of low energy antiproton annihilations on nuclei (e.g. hadronization and product multiplicities) are not well known, and Monte Carlo simulation packages that use different models provide different descriptions of the annihilation events. In this study, we measured the particle multiplicities resulting from antiproton annihilations on nuclei. The results were compared with predictions obtained using different models in the simulation tools GEANT4 and FLUKA. For this study, we exposed thin targets (Cu, Ag and Au) to a very low energy antiproton beam from CERN's Antiproton Decelerator, exploiting the secondary beamline available in the AEgIS experimental zone. The antiproton annihilation products were detected using emulsion films developed at the Laboratory of High Energy Physics in Bern, where they were analysed at the automatic microscope facility. The fragment multiplicity measured in this study is in good agreement with results obtained with FLUKA simulations for both minimally and heavily ionizing particles.
Search for Sterile Neutrinos in the Muon Neutrino Disappearance Mode at FNAL (1503.07471)
A. Anokhina, A. Bagulya, M. Benettoni, P. Bernardini, R. Brugnera, M. Calabrese, A. Cecchetti, S. Cecchini, M. Chernyavskiy, F. Dal Corso, O. Dalkarov, A. Del Prete, G. De Robertis, M. De Serio, D. Di Ferdinando, S. Dusini, T. Dzhatdoev, R. A. Fini, G. Fiore, A. Garfagnini, M. Guerzoni, B. Klicek, U. Kose, K. Jakovcic, G. Laurenti, I. Lippi, F. Loddo, A. Longhin, M. Malenica, G. Mancarella, G. Mandrioli, A. Margiotta, G. Marsell, N. Mauri, E. Medinaceli, R. Mingazheva, O. Morgunova, M. T. Muciaccia, M. Nessi, D. Orecchini, A. Paoloni, G. Papadia, L. Paparella, L. Pasqualini, A. Pastore, L. Patrizii, N. Polukhina, M. Pozzato, M. Roda, T. Roganova, G. Rosa, Z. Sahnoun, T. Shchedrina, S. Simone, C. Sirignano, G. Sirri, M. Spurio, L. Stanco, N. Starkov, M. Stipcevic, A. Surdo, M. Tenti, V. Togo, M. Vladymyrov
Feb. 2, 2017 hep-ph, hep-ex, physics.ins-det
The NESSiE Collaboration has been setup to undertake a conclusive experiment to clarify the {\em muon--neutrino disappearance} measurements at short baselines in order to put severe constraints to models with more than the three--standard neutrinos. To this aim the current FNAL--Booster neutrino beam for a Short--Baseline experiment was carefully evaluated by considering the use of magnetic spectrometers at two sites, near and far ones. The detector locations were studied, together with the achievable performances of two OPERA--like spectrometers. The study was constrained by the availability of existing hardware and a time--schedule compatible with the undergoing project of multi--site Liquid--Argon detectors at FNAL. The settled physics case and the kind of proposed experiment on the Booster neutrino beam would definitively clarify the existing tension between the $\nu_{\mu}$ disappearance and the $\nu_e$ appearance/disappearance at the eV mass scale. In the context of neutrino oscillations the measurement of $\nu_{\mu}$ disappearance is a robust and fast approach to either reject or discover new neutrino states at the eV mass scale. We discuss an experimental program able to extend by more than one order of magnitude (for neutrino disappearance) and by almost one order of magnitude (for antineutrino disappearance) the present range of sensitivity for the mixing angle between standard and sterile neutrinos. These extensions are larger than those achieved in any other proposal presented so far.
NEWS: Nuclear Emulsions for WIMP Search (1604.04199)
A. Aleksandrov, A. Anokhina, T. Asada, D. Bender, I. Bodnarchuk, A. Buonaura, S. Buontempo, M. Chernyavskii, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. De Lellis, M. De Serio, A. Di Crescenzo, N. Di Marco, S. Dmitrievski, T. Dzhatdoev, R. A. Fini, S. Furuya, G. Galati, V. Gentile, S. Gorbunov, Y. Gornushkin, A. M. Guler, H. Ichiki, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, M. Kimura, N. Konovalova, K. Kuge, A. Lauria, P. Loverre, S. Machii, A. Managadze, P. Monacelli, M. C. Montesi, T. Naka, M. Nakamura, T. Nakano, A. Pastore, D. Podgrudkov, N. Polukhina, F. Pupilli, T. Roganova, G. Rosa, O. Sato, T. Shchedrina, S. Simone, C. Sirignano, A. Sotnikov, N. Starkov, P. Strolin, Y. Tawara, V. Tioukov, A. Umemoto, M. Vladymyrov, M. Yoshimoto, S. Zemskova
April 14, 2016 physics.ins-det, astro-ph.IM
Nowadays there is compelling evidence for the existence of dark matter in the Universe. A general consensus has been expressed on the need for a directional sensitive detector to confirm, with a complementary approach, the candidates found in conventional searches and to finally extend their sensitivity beyond the limit of neutrino-induced background. We propose here the use of a detector based on nuclear emulsions to measure the direction of WIMP-induced nuclear recoils. The production of nuclear emulsion films with nanometric grains is established. Several measurement campaigns have demonstrated the capability of detecting sub-micrometric tracks left by low energy ions in such emulsion films. Innovative analysis technologies with fully automated optical microscopes have made it possible to achieve the track reconstruction for path lengths down to one hundred nanometers and there are good prospects to further exceed this limit. The detector concept we propose foresees the use of a bulk of nuclear emulsion films surrounded by a shield from environmental radioactivity, to be placed on an equatorial telescope in order to cancel out the effect of the Earth rotation, thus keeping the detector at a fixed orientation toward the expected direction of galactic WIMPs. We report the schedule and cost estimate for a one-kilogram mass pilot experiment, aiming at delivering the first results on the time scale of six years.
Extra-large crystal emulsion detectors for future large-scale experiments (1512.01339)
T. Ariga, A. Ariga, K. Kuwabara, K. Morishima, M. Moto, A. Nishio, P. Scampoli, M. Vladymyrov
Feb. 11, 2016 physics.ins-det
Photographic emulsion is a particle tracking device which features the best spatial resolution among particle detectors. For certain applications, for example muon radiography, large-scale detectors are required. Therefore, a huge surface has to be analyzed by means of automated optical microscopes. An improvement of the readout speed is then a crucial point to make these applications possible and the availability of a new type of photographic emulsions featuring crystals of larger size is a way to pursue this program. This would allow a lower magnification for the microscopes, a consequent larger field of view resulting in a faster data analysis. In this framework, we developed new kinds of emulsion detectors with a crystal size of 600-1000 nm, namely 3-5 times larger than conventional ones, allowing a 25 times faster data readout. The new photographic emulsions have shown a sufficient sensitivity and a good signal to noise ratio. The proposed development opens the way to future large-scale applications of the technology, e.g. 3D imaging of glacier bedrocks or future neutrino experiments.
Discovery of tau neutrino appearance in the CNGS neutrino beam with the OPERA experiment (1507.01417)
OPERA Collaboration: N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, I. Bodnarchuk, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Büttner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. De Lellis, M. De Serio, P. Del Amo Sanchez, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, F. Fornari, T. Fukuda, G. Galati, A. Garfagnini, J. Goldberg, Y. Gornushkin, G. Grella, A.M. Guler, C. Gustavino, C. Hagner, T. Hara, H. Hayakawa, A. Hollnagel, B. Hosseini, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, F. Laudisio, A. Lauria, A. Ljubicic, A. Longhin, P.F. Loverre, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, T. Matsushita, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, M. Miyanishi, F. Mizutani, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, A. Olchevsky, T. Omura, K. Ozaki, A. Paoloni, L. Paparella, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, T. Roganova, H. Rokujo, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, W. Schmidt-Parzefall, I. Shakirianova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, A. Sotnikov, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladymyrov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova
Nov. 2, 2015 hep-ex
The OPERA experiment was designed to search for $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations in appearance mode, i.e. by detecting the $\tau$-leptons produced in charged current $\nu_{\tau}$ interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso beam. The observation of $\nu_{\mu} \rightarrow \nu_{\tau}$ appearance, achieved with four candidate events in a sub-sample of the data, was previously reported. In this paper, a fifth $\nu_{\tau}$ candidate event, found in an enlarged data sample, is described. Together with a further reduction of the expected background, the candidate events detected so far allow assessing the discovery of $\nu_{\mu}\rightarrow \nu_{\tau}$ oscillations in appearance mode with a significance larger than 5 $\sigma$.
A facility to Search for Hidden Particles (SHiP) at the CERN SPS (1504.04956)
SHiP Collaboration: M. Anelli, S. Aoki, G. Arduini, J.J. Back, A. Bagulya, W. Baldini, A. Baranov, G.J. Barker, S. Barsuk, M. Battistin, J. Bauche, A. Bay, V. Bayliss, L. Bellagamba, G. Bencivenni, M. Bertani, O. Bezshyyko, D. Bick, N. Bingefors, A. Blondel, M. Bogomilov, A. Boyarsky, D. Bonacorsi, D. Bondarenko, W. Bonivento, J. Borburgh, T. Bradshaw, R. Brenner, D. Breton, N. Brook, M. Bruschi, A. Buonaura, S. Buontempo, S. Cadeddu, A. Calcaterra, M. Calviani, M. Campanelli, C. Capoccia, A. Cecchetti, A. Chatterjee, J. Chauveau, A. Chepurnov, M. Chernyavskiy, P. Ciambrone, C. Cicalo, G. Conti, K. Cornelis, M. Courthold, M. G. Dallavalle, N. D'Ambrosio, G. De Lellis, M. De Serio, L. Dedenko, A. Di Crescenzo, N. Di Marco, C. Dib, J. Dietrich, H. Dijkstra, D. Domenici, S. Donskov, D. Druzhkin, J. Ebert, U. Egede, A. Egorov, V. Egorychev, M.A. El Alaoui, T. Enik, A. Etenko, F. Fabbri, L. Fabbri, G. Fedorova, G. Felici, M. Ferro-Luzzi, R.A. Fini, M. Franke, M. Fraser, G. Galati, B. Giacobbe, B. Goddard, L. Golinka-Bezshyyko, D. Golubkov, A. Golutvin, D. Gorbunov, E. Graverini, J-L Grenard, A.M. Guler, C. Hagner, H. Hakobyan, J.C. Helo, E. van Herwijnen, D. Horvath, M. Iacovacci, G. Iaselli, R. Jacobsson, I. Kadenko, M. Kamiscioglu, C. Kamiscioglu, G. Khaustov, A. Khotjansev, B. Kilminster, V. Kim, N. Kitagawa, K. Kodama, A. Kolesnikov, D. Kolev, M. Komatsu, N. Konovalova, S. Koretskiy, I. Korolko, A. Korzenev, S. Kovalenko, Y. Kudenko, E. Kuznetsova, H. Lacker, A. Lai, G. Lanfranchi, A. Lauria, H. Lebbolo, J.-M. Levy, L. Lista, P. Loverre, A. Lukiashin, V.E. Lyubovitskij, A. Malinin, M. Manfredi, A. Perillo-Marcone, A. Marrone, R. Matev, E.N. Messomo, P. Mermod, S. Mikado, Yu. Mikhaylov, J. Miller, D. Milstead, O. Mineev, R. Mingazheva, G. Mitselmakher, M. Miyanishi, P. Monacelli, A. Montanari, M.C. Montesi, G. Morello, K. Morishima, S. Movtchan, V. Murzin, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, N. Nurakhov, B. Obinyakov, K. Ocalan, S. Ogawa, V. Oreshkin, A. Orlov, J. Osborne, P. Pacholek, J. Panman, A. Paoloni, L. Paparella, A. Pastore, M. Patel, K. Petridis, M. Petrushin, M. Poli-Lener, N. Polukhina, V. Polyakov, M. Prokudin, G. Puddu, F. Pupilli, F. Rademakers, A. Rakai, T. Rawlings, F. Redi, S. Ricciardi, R. Rinaldesi, T. Roganova, A. Rogozhnikov, H. Rokujo, A. Romaniouk, G. Rosa, I. Rostovtseva, T. Rovelli, O. Ruchayskiy, T. Ruf, G. Saitta, V. Samoylenko, V. Samsonov, A. Sanz Ull, A. Saputi, O. Sato, W. Schmidt-Parzefall, N. Serra, S. Sgobba, M. Shaposhnikov, P. Shatalov, A. Shaykhiev, L. Shchutska, V. Shevchenko, H. Shibuya, Y. Shitov, S. Silverstein, S. Simone, M. Skorokhvatov, S. Smirnov, E. Solodko, V. Sosnovtsev, R. Spighi, M. Spinetti, N. Starkov, B. Storaci, C. Strabel, P. Strolin, S. Takahashi, P. Teterin, V. Tioukov, D. Tommasini, D. Treille, R. Tsenov, T. Tshchedrina, A. Ustyuzhanin, F. Vannucci, V. Venturi, M. Villa, Heinz Vincke, Helmut Vincke, M. Vladymyrov, S. Xella, M. Yalvac, N. Yershov, D. Yilmaz, A. U. Yilmazer, G. Vankova-Kirilova, Y. Zaitsev, A. Zoccoli
A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation.
Limits on muon-neutrino to tau-neutrino oscillations induced by a sterile neutrino state obtained by OPERA at the CNGS beam (1503.01876)
OPERA Collaboration: N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, I. Bodnarchuk, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Büttner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. De Lellis, M. De Serio, P. Del Amo Sanchez, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, J. Goldberg, Y. Gornushkin, G. Grella, A. M. Guler, C. Gustavino, C. Hagner, T. Hara, A. Hollnagel, B. Hosseini, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, A. Ljubicic, A. Longhin, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, T. Omura, K. Ozaki, A. Paoloni, L. Paparella, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, T. Roganova, H. Rokujo, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, I. Shakirianova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladymyrov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova
March 15, 2015 hep-ex
The OPERA experiment, exposed to the CERN to Gran Sasso $\nu_\mu$ beam, collected data from 2008 to 2012. Four oscillated $\nu_\tau$ Charged Current interaction candidates have been detected in appearance mode, which are consistent with $\nu_\mu \to \nu_\tau$ oscillations at the atmospheric $\Delta m^2$ within the "standard" three-neutrino framework. In this paper, the OPERA $\nu_\tau$ appearance results are used to derive limits on the mixing parameters of a massive sterile neutrino.
The NESSiE way to searches for sterile neutrinos at FNAL (1410.3980)
L. Stanco, A. Anokhina, A. Bagulya, M. Benettoni, P. Bernardini, R. Brugnera, M. Calabrese, A. Cecchetti, S. Cecchini, M. Chernyavskiy, P. Creti, F. Dal Corso, O. Dalkarov, A. Del Prete, G. De Robertis, M. De Serio, L. Degli Esposti, D. Di Ferdinando, S. Dusini, T. Dzhatdoev, C. Fanin, R. A. Fini, G. Fiore, A. Garfagnini, S. Golovanov, M. Guerzoni, B. Klicek, U. Kose, K. Jakovcic, G. Laurenti, I. Lippi, F. Loddo, A. Longhin, M. Malenica, G. Mancarella, G. Mandriol, A. Margiotta, G. Marsella, N. Mauri, E. Medinaceli, A. Mengucci, R. Mingazheva, O. Morgunova, M. T. Muciaccia, M. Nessi, D. Orecchini, A. Paoloni, G. Papadia, L. Paparella, L. Pasqualini, A. Pastore, L. Patrizii, N. Polukhina, M. Pozzato, M. Roda, T. Roganova, G. Rosa, Z. Sahnoun, S. Simone, C. Sirignano, G. Sirri, M. Spurio, N. Starkov, M. Stipcevic, A. Surdo, M. Tenti, V. Togo, M. Ventura, M. Vladymyrov
Oct. 15, 2014 hep-ph, hep-ex, physics.ins-det
Neutrino physics is nowadays receiving more and more attention as a possible source of information for the long-standing problem of new physics beyond the Standard Model. The recent measurement of the mixing angle $\theta_{13}$ in the standard mixing oscillation scenario encourages us to pursue the still missing results on leptonic CP violation and absolute neutrino masses. However, puzzling measurements exist that deserve an exhaustive evaluation. The NESSiE Collaboration has been setup to undertake conclusive experiments to clarify the muon-neutrino disappearance measurements at small $L/E$, which will be able to put severe constraints to models with more than the three-standard neutrinos, or even to robustly measure the presence of a new kind of neutrino oscillation for the first time. To this aim the use of the current FNAL-Booster neutrino beam for a Short-Baseline experiment has been carefully evaluated. Its recent proposal refers to the use of magnetic spectrometers at two different sites, Near and Far ones. Their positions have been extensively studied, together with the possible performances of two OPERA-like spectrometers. The proposal is constrained by availability of existing hardware and a time-schedule compatible with the undergoing project of a multi-site Liquid-Argon detectors at FNAL. The experiment to be possibly setup at Booster will allow to definitively clarify the current $\nu_{\mu}$ disappearance tension with $\nu_{e}$ appearance and disappearance at the eV mass scale.
Prospects for the measurement of muon-neutrino disappearance at the FNAL-Booster (1404.2521)
A. Anokhina, A. Bagulya, M. Benettoni, P. Bernardini, R. Brugnera, M. Calabrese, A. Cecchetti, S. Cecchini, M. Chernyavskiy, P. Creti, F. Dal Corso, O. Dalkarov, A. Del Prete, G. De Robertis, M. De Serio, L. Degli Esposti, D. Di Ferdinando, S. Dusini, T. Dzhatdoev, C. Fanin, R. A. Fini, G. Fiore, A. Garfagnini, S. Golovanov, M. Guerzoni, B. Klicek, U. Kose, K. Jakovcic, G. Laurent, I. Lippi, F. Loddo, A. Longhin, M. Malenica, G. Mancarella, G. Mandrioli, A. Margiotta, G. Marsella, N. Mauri, E. Medinaceli, A. Mengucci, R. Mingazheva, O. Morgunova, M. T. Muciaccia, M. Nessi, D. Orecchini, A. Paoloni, G. Papadia, L. Paparella, L. Pasqualini, A. Pastore, L. Patrizii, N. Polukhina, M. Pozzato, M. Roda, T. Roganova, G. Rosa, Z. Sahnoun, S. Simone, C. Sirignano, G. Sirri, M. Spurio, L. Stanco, N. Starkov, M. Stipcevic, A. Surdo, M. Tenti, V. Togo, M. Ventura, M. Vladymyrov
April 9, 2014 hep-ph, hep-ex, physics.ins-det
Neutrino physics is nowadays receiving more and more attention as a possible source of information for the long-standing problem of new physics beyond the Standard Model. The recent measurement of the mixing angle $\theta_{13}$ in the standard mixing oscillation scenario encourages us to pursue the still missing results on leptonic CP violation and absolute neutrino masses. However, puzzling measurements exist that deserve an exhaustive evaluation. The NESSiE Collaboration has been setup to undertake conclusive experiments to clarify the muon-neutrino disappearance measurements at small $L/E$, which will be able to put severe constraints to models with more than the three-standard neutrinos, or even to robustly measure the presence of a new kind of neutrino oscillation for the first time. To this aim the use of the current FNAL-Booster neutrino beam for a Short-Baseline experiment has been carefully evaluated. This proposal refers to the use of magnetic spectrometers at two different sites, Near and Far. Their positions have been extensively studied, together with the possible performances of two OPERA-like spectrometers. The proposal is constrained by availability of existing hardware and a time-schedule compatible with the CERN project for a new more performant neutrino beam, which will nicely extend the physics results achievable at the Booster. The possible FNAL experiment will allow to clarify the current $\nu_{\mu}$ disappearance tension with $\nu_e$ appearance and disappearance at the eV mass scale. Instead, a new CERN neutrino beam would allow a further span in the parameter space together with a refined control of systematics and, more relevant, the measurement of the antineutrino sector, by upgrading the spectrometer with detectors currently under R&D study.
The NESSiE Concept for Sterile Neutrinos (1312.1227)
L. Stanco, A. Anokhina, A. Bagulya, M. Benettoni, P. Bernardini, A. Bertolin, R. Brugnera, M. Calabrese, A. Cecchetti, S. Cecchini, M. Chernyavskiy, G. Collazuol, P. Creti, F. Dal Corso, O. Dalkarov, A. Del Prete, I. De Mitri, G. De Robertis, M. De Serio, L. Degli Esposti, D. Di Ferdinando, U. Dore, S. Dusini, T. Dzhatdoev, C. Fanin, R. A. Fini, G. Fiore, G. Galati, A. Garfagnini, G. Giacomelli, R. Giacomelli, S. Golovanov, C. Guandalin, M. Guerzoni, B. Klicek, U. Kose, K. Jakovcic, G. Laurenti, M. Laveder, I. Lippi, F. Loddo, A. Longhin, P. Loverre, M. Malenica, G. Mancarella, G. Mandrioli, A. Margiotta, G. Marsella, N. Mauri, E. Medinaceli, A. Mengucci, M. Mezzetto, R. Michinelli, R. Mingazheva, O. Morgunova, M. T. Muciaccia, D. Orecchini, A. Paoloni, G. Papadia, L. Paparella, A. Pastore, L. Patrizii, N. Polukhina, M. Pozzato, M. Roda, T. Roganova, G. Rosa, Z. Sahnoun, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spurio, N. Starkov, M. Stipcevic, A. Surdo, M. Tenti, V. Togo, M. Ventura, M. Vladymyrov, M. Zago
Dec. 4, 2013 hep-ph, physics.ins-det
Neutrino physics is nowadays receiving more and more attention as a possible source of information for the long-standing problem of new physics beyond the Standard Model. The recent measurement of the third mixing angle theta13 in the standard mixing oscillation scenario encourages us to pursue the still missing results on leptonic CP violation and absolute neutrino masses. However, several puzzling measurements exist, which deserve an exhaustive evaluation. The NESSiE Collaboration has been setup to undertake a definitive experiment to clarify the muon disappearance measurements at small L/E, which will be able to put severe constraints to any model with more than the three-standard neutrinos, or even to robustly measure the presence of a new kind of neutrino oscillation for the first time. Within the context of the current CERN project, aimed to revitalize the neutrino field in Europe, we will illustrate the achievements that can be obtained by a double muon-spectrometer system, with emphasis on the search for sterile neutrinos.