Likelihood approach to the first dark matter results from XENON100
| العنوان: | Likelihood approach to the first dark matter results from XENON100 |
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| المؤلفون: | Manfred Lindner, K. E. Lim, F. Arneodo, J. Lamblin, Laura Baudis, Eilam Gross, T. Marrodán Undagoitia, A. Askin, D. Thers, S. E. A. Orrigo, S. Fattori, R. F. Lang, Ethan Brown, Ch. Weinheimer, João Cardoso, A. C. C. Ribeiro, K. Arisaka, O. Vitells, M. Weber, G. Plante, A. J. Melgarejo Fernandez, J. A. M. Lopes, A. Kish, J.M.F. dos Santos, Ehud Duchovni, B. Choi, E. Pantic, K. L. Giboni, E. Tziaferi, David B. Cline, Kaixuan Ni, Sebastian Lindemann, A. Behrens, C. W. Lam, R. Santorelli, K. Bokeloh, Marc Schumann, P. Shagin, Y. Mei, Elena Aprile, A. Teymourian, A. D. Ferella, Hongwei Wang, T. Bruch, Uwe Oberlack |
| المساهمون: | Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), XENON100 |
| المصدر: | Physical Review D Physical Review D, American Physical Society, 2011, 84, pp.052003. ⟨10.1103/PhysRevD.84.052003⟩ |
| بيانات النشر: | American Physical Society (APS), 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Scale (ratio), 010308 nuclear & particles physics, Monte Carlo method, Dark matter, FOS: Physical sciences, Statistical model, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Frequentist inference, Weakly interacting massive particles, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Test statistic, Limit (mathematics), Statistical physics, 010306 general physics, Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | Many experiments that aim at the direct detection of Dark Matter are able to distinguish a dominant background from the expected feeble signals, based on some measured discrimination parameter. We develop a statistical model for such experiments using the Profile Likelihood ratio as a test statistic in a frequentist approach. We take data from calibrations as control measurements for signal and background, and the method allows the inclusion of data from Monte Carlo simulations. Systematic detector uncertainties, such as uncertainties in the energy scale, as well as astrophysical uncertainties, are included in the model. The statistical model can be used to either set an exclusion limit or to make a discovery claim, and the results are derived with a proper treatment of statistical and systematic uncertainties. We apply the model to the first data release of the XENON100 experiment, which allows to extract additional information from the data, and place stronger limits on the spin-independent elastic WIMP-nucleon scattering cross-section. In particular, we derive a single limit, including all relevant systematic uncertainties, with a minimum of 2.4x10^-44 cm^2 for WIMPs with a mass of 50 GeV/c^2. 8 pages, 6 figures, matches accepted version |
| تدمد: | 1550-2368 1550-7998 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cadcf11f9a644d4a2be88b685f2ac43Test https://doi.org/10.1103/physrevd.84.052003Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....9cadcf11f9a644d4a2be88b685f2ac43 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15502368 15507998 |
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