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  • Aprile, E. (author)

Projected WIMP sensitivity of the XENONnT dark matter experiment

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-11-16
  • IOP Publishing,2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-188173
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-188173URI
  • https://doi.org/10.1088/1475-7516/2020/11/031DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • XENONnT is a dark matter direct detection experiment, utilizing 5.9 t of instrumented liquid xenon, located at the INFN Laboratori Nazionali del Gran Sasso. In this work, we predict the experimental background and project the sensitivity of XENONnT to the detection of weakly interacting massive particles (WIMPs). The expected average differential background rate in the energy region of interest, corresponding to (1, 13) keV and (4, 50) keV for electronic and nuclear recoils, amounts to 12.3 +/- 0.6 (keV t y)(-1) and (2.2 +/- 0.5) x 10(-3 )(keV t y)(-1), respectively, in a 4t fiducial mass. We compute unified confidence intervals using the profile construction method, in order to ensure proper coverage. With the exposure goal of 20 t y, the expected sensitivity to spin-independent WIMP-nucleon interactions reaches a cross-section of 1.4 x 10(-48) cm(2) for a 50 GeV/c(2) mass WIMP at 90% confidence level, more than one order of magnitude beyond the current best limit, set by XENON1T. In addition, we show that for a 50 GeV/c(2) WIMP with cross-sections above 2.6 x 10(-48) cm(2) (5.0 x 10(-48) cm(2)) the median XENONnT discovery significance exceeds 3 sigma (5 sigma). The expected sensitivity to the spin-dependent WIMP coupling to neutrons (protons) reaches 2.2 x 10(-43) cm(2) (6.0 x 10(-42) cm(2)).

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  • Aalbers, JelleStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)jeaa8772 (author)
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  • Stockholms universitetFysikum (creator_code:org_t)

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  • In:Journal of Cosmology and Astroparticle Physics: IOP Publishing:111475-7516

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By the author/editor
Aprile, E.
Aalbers, Jelle
Agostini, F.
Alfonsi, M.
Althueser, L.
Amaro, F. D.
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Antochi, Vasile ...
Angelino, E.
Angevaare, J. R.
Arneodo, F.
Barge, Derek
Baudis, L.
Bauermeister, Bo ...
Bellagamba, L.
Benabderrahmane, ...
Berger, T.
Brown, A.
Brown, E.
Bruenner, S.
Bruno, G.
Budnik, R.
Capelli, C.
Cardoso, J. M. R ...
Cichon, D.
Cimmino, B.
Clark, M.
Coderre, D.
Colijn, A. P.
Conrad, Jan
Cussonneau, J. P ...
Decowski, M. P.
Depoian, A.
Di Gangi, P.
Di Giovanni, A.
Di Stefano, R.
Diglio, S.
Elykov, A.
Eurin, G.
Ferella, A. D.
Fulgione, W.
Gaemers, P.
Gaior, R.
Galloway, M.
Gao, F.
Grandi, L.
Hasterok, C.
Hils, C.
Hiraide, K.
Hoetzsch, L.
Howlett, J.
Iacovacci, M.
Itow, Y.
Joerg, F.
Kato, N.
Kazama, S.
Kobayashi, M.
Koltman, G.
Kopec, A.
Landsman, H.
Lang, R. F.
Levinson, L.
Lin, Q.
Lindemann, S.
Lindner, M.
Lombardi, F.
Long, J.
Lopes, J. A. M.
Lopez Fune, E.
Macolino, C.
Mahlstedt, Jörn
Mancuso, A.
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Messina, M.
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Moriyama, S.
Mosbacher, Y.
Murra, M.
Naganoma, J.
Ni, K.
Oberlack, U.
Odgers, K.
Palacio, J.
Pelssers, Bart
Peres, R.
Pienaar, J.
Pizzella, V.
Plante, G.
Qin, J.
Qiu, H.
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Reichard, S.
Rocchetti, A.
Rupp, N.
dos Santos, J. M ...
Sartorelli, G.
Sarcevic, N.
Scheibelhut, M.
Schreiner, J.
Schulte, D.
Schumann, M.
Scotto Lavina, L ...
Selvi, M.
Semeria, F.
Shagin, P.
Shockley, E.
Silva, M.
Simgen, H.
Takeda, A.
Therreau, C.
Thers, D.
Toschi, F.
Trinchero, G.
Tunnell, C.
Valerius, K.
Vargas, M.
Volta, G.
Wang, H.
Wei, Y.
Weinheimer, C.
Weiss, M.
Wenz, D.
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Yamashita, M.
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