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  • Sensitivity of the SHiP experiment to light dark matter
    Publication . Ahdida, C.; Akmete, A.; Albanese, R.; Alexandrov, A.; Anokhina, A.; Aoki, S.; Arduini, G.; Atkin, E.; Azorskiy, N.; Back, J. J.; Bagulya, A.; Karpenkov, D.; Kershaw, K.; Battistin, M.; Uvarov, L.; Khabibullin, M.; Bezshyiko, I.; Golubkov, D.; Khalikov, E.; Khaustov, G.; Tosi, N.; D’Appollonio, G.; Krasilnikova, I.; Khoriauli, G.; Redi, F.; Khotyantsev, A.; Sanchez Galan, F.; Durhan, O.; Kim, Y. G.; Lantwin, O.; Vankova-Kirilova, G.; Marsh, S.; de Asmundis, R.; Kolev, D. I.; Marshall, A. M.; Mattelaer, O.; Mefodev, A.; Mermod, P.; Miano, A.; Mikado, S.; Mikhaylov, Yu.; Milstead, D. A.; Poliakov, V.; De Carvalho Saraiva, J.; Rodin, Volodymyr; Pastore, A.; Di Giulio, L.; Sato, O.; Prieto Prieto, J.; Ehlert, M.; Mineev, O.; Robbe, P.; Froeschl, R.; Montanari, A.; Rademakers, A.; Berdnikov, Y. A.; Bondarenko, K.; Woo, J.-K.; Montesi, M. C.; Morishima, K.; Rovelli, T.; Movchan, S.; Yoon, C. S.; Bencivenni, G.; Muttoni, Y.; De Lellis, G.; Naganawa, N.; Elikkaya, E.; Nakamura, M.; Tramontano, F.; Fabbri, F.; Bieschke, S.; Bonivento, W. M.; Nakano, T.; Di Marco, N.; Nasybulin, S.; Kono, A.; Frugiuele, C.; Ninin, P.; Venturi, V.; Gatignon, L.; Ferrillo, M.; Nishio, A.; Polukhina, N.; Bertani, M.; Novikov, A.; Enik, T.; Bick, D.; Obinyakov, B.; Kurochka, V.; Ogawa, S.; Okateva, N.; Wurm, M.; Treille, D.; Savchenko, E. S.; Golovtsov, V.; Kitagawa, N.; Opitz, B.; de Magistris, M.; Rodin, Viktor; Osborne, J.; Ovchynnikov, M.; Fukuda, T.; Dib, C.; Owtscharenko, N.; Golovatiuk, A.; Malinin, A.; Owen, P. H.; Pacholek, P.; De Roeck, A.; Ratnikov, F.; Betancourt, C.; Vilchinski, S.; Paoloni, A.; Xella, S.; Korol’ko, I.; Park, B. D.; Rodrigues Cavalcante, A. B.; Dijkstra, H.; Schliwinski, J. S.; Petridis, K.; Schmidt-Parzefall, W.; Serra, N.; Sgobba, S.; Shadura, O.; Shakin, A.; Shaposhnikov, M.; Shatalov, P.; Shchedrina, T.; Tsenov, R.; Vincke, Helmut; Than Naing, S.; Ko, J.-W.; Zaytsev, Yu.; Ulin, S.; Korzenev, A.; Blanco, A.; Vlasik, K.; Lauria, A.; Shchutska, L.; Baaltasar Dos Santos, F.; Baranov, A.; Fedin, O.; Shevchenko, V.; Shibuya, H.; Wertelaers, P.; Shirobokov, S.; Filippov, K.; Gavrilov, G.; Shustov, A.; Silverstein, S. B.; Bay, A.; Simone, S.; De Serio, M.; Kovalenko, S.; Golutvin, A.; Gorshenkov, M.; Simoniello, R.; Kodama, K.; Skorokhvatov, M.; Lee, K. S.; Smirnov, S.; Dougherty, L. A.; Lopes, L.; Kurbatov, P.; Boehm, J.; Boiarska, I.; Goddard, B.; Sohn, J. Y.; Kostyukhin, V.; Sokolenko, A.; Ricciardi, S.; Solodko, E.; Starkov, N.; Fedotovs, F.; De Simone, D.; Zelenov, A.; Maleev, V.; Patel, M.; Stoel, L.; Visone, C.; Stramaglia, M. E.; Sukhonos, D.; Lee, K. Y.; Bauche, J.; Suzuki, Y.; Magnan, A.; Sanz Ull, A.; Takahashi, S.; Tastet, J. L.; Vannucci, F.; Golinka-Bezshyyko, L.; Dolmatov, A.; Bogomilov, M.; Felici, G.; Prokudin, M.; Teterin, P.; Volkov, A.; Kolesnikov, A.; Zimmerman, J.; Borburgh, J.; Boyarsky, A.; Brenner, R.; Breton, D.; Büscher, V.; Buonaura, A.; Buonocore, L.; Buontempo, S.; Dedenko, L.; Donskov, S.; Pereyma, D.; Fini, R. A.; Dergachev, P.; Prota, A.; Gorbounov, P.; Dubreuil, A.; Roganova, T.; Cadeddu, S.; Fraser, M.; Fresa, R.; Calcaterra, A.; Calviani, M.; Etenko, A.; Campanelli, M.; Kuznetsova, E.; Lopez Sola, E.; Casolino, M.; Charitonidis, N.; Gall, J.; Chau, P.; Rakai, A.; Maltoni, F.; Berdnikov, A. Y.; Chauveau, J.; Perillo-Marcone, A.; Chepurnov, A.; Rokujo, H.; Chernyavskiy, M.; Kolosov, V.; Ruchayskiy, O.; Gorbunov, D.; Gorkavenko, V.; Lyubovitskij, V.; Choi, K.-Y.; Quercia, A.; Chumakov, A.; Vincke, Heinz; Ciambrone, P.; Cicero, V.; Kudenko, Y.; Fonte, P.; Santos Diaz, P.; Timiryasov, I.; Congedo, L.; Drohan, V.; Cornelis, K.; Cristinziani, M.; Rosa, G.; Galati, G.; Crupano, A.; Yilmazer, A. U.; Dallavalle, G. M.; Datwyler, A.; Dmitrenko, V.; Maalmi, J.; Komatsu, M.; Gorbunov, S.; Kurbatov, E.; Ursov, E.; D’Ambrosio, N.; Petkov, G. L.; Franco, C.; Grachev, V.; Grandchamp, A. L.; Graverini, E.; Grenard, J.-L.; Grenier, D.; Grichine, V.; Gruzinskii, N.; Guler, A. M.; Konovalova, N.; Tioukov, V.; Lacker, H. M.; Kim, V.; Ustyuzhanin, A.; Manabe, Y.; Korol, I.; Voronkov, R.; Guz, Yu.; Lanfranchi, G.; Bardou, F.; Haefeli, G. J.; Koukovini Platia, E.; Hagner, C.; Rinaldesi, M.; Ruf, T.; Hakobyan, H.; Harris, I. W.; Loschiavo, V. P.; van Herwijnen, E.; Saputi, A.; Gentile, V.; Hessler, C.; Tommasini, D.; Hollnagel, A.; van Waasen, S.; Hosseini, B.; Petrov, A.; Williams, O.; Managadze, A. K.; Samoylenko, V.; Hushchyn, M.; Uteshev, Z.; Iaselli, G.; Domenici, D.; Barker, G. J.; Iuliano, A.; Rawlings, T.; Bayliss, V.; Yilmaz, D.; Jacobsson, R.; Kormannshaus, S.; Joković, D.; Jonker, M.; Wanke, R.; Lévy, J.-M.; Kadenko, I.; Ferro-Luzzi, M.; Kain, V.; Kaiser, B.; Samsonov, V.; Podgrudkov, D.; Manfredi, M.; Bezshyyko, O.; Di Crescenzo, A.; Kamiscioglu, C.; Torii, M.; Lamont, M.
    Dark matter is a well-established theoretical addition to the Standard Model supported by many observations in modern astrophysics and cosmology. In this context, the existence of weakly interacting massive particles represents an appealing solution to the observed thermal relic in the Universe. Indeed, a large experimental campaign is ongoing for the detection of such particles in the sub-GeV mass range. Adopting the benchmark scenario for light dark matter particles produced in the decay of a dark photon, with αD = 0.1 and mA′ = 3mχ, we study the potential of the SHiP experiment to detect such elusive particles through its Scattering and Neutrino detector (SND). In its 5-years run, corresponding to 2 · 1020 protons on target from the CERN SPS, we find that SHiP will improve the current limits in the mass range for the dark matter from about 1 MeV to 300 MeV. In particular, we show that SHiP will probe the thermal target for Majorana candidates in most of this mass window and even reach the Pseudo-Dirac thermal relic.
    2021-04-20Artigo científico Acesso aberto Ver mais
  • Effects of audiovisual presentations on visual localization errors: one or several multisensory mechanisms?
    Publication . Nazaré, Cristina Jordão; Oliveira, Armando Mónica de
    The present study examines the extent to which temporal and spatial properties of sound modulate visual motion processing in spatial localization tasks. Participants were asked to locate the place at which a moving visual target unexpectedly vanished. Across different tasks, accompanying sounds were factorially varied within subjects as to their onset and offset times and/or positions relative to visual motion. Sound onset had no effect on the localization error. Sound offset was shown to modulate the perceived visual offset location, both for temporal and spatial disparities. This modulation did not conform to attraction toward the timing or location of the sounds but, demonstrably in the case of temporal disparities, to bimodal enhancement instead. Favorable indications to a contextual effect of audiovisual presentations on interspersed visual-only trials were also found. The short sound-leading offset asynchrony had equivalent benefits to audiovisual offset synchrony, suggestive of the involvement of early-level mechanisms, constrained by a temporal window, at these conditions. Yet, we tentatively hypothesize that the whole of the results and how they compare with previous studies requires the contribution of additional mechanisms, including learning detection of auditory-visual associations and cross-sensory spread of endogenous attention.
    2021-04-20Texto Acesso aberto Ver mais