409 research outputs found

    ‘Recristianizacion’ de los manuscritos del Mar Muerto: elementos comunes entre los textos de Qumrān y el cristianismo primitivo (una revision)

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    The Dead Sea Scrolls are supposed to be one of the most relevant discoveries of the past century because they pretended to take up the period in blank between the Classical and Rabbinical Judaism and the Old and New Testament. However, first studies were focused on the relation of this collection with the emergent Christianism and its affiliation with the figure of Jesus. In the last years, the preeminent investigation’s line is based on the ‘recristianization’ of these manuscripts, in the search for elements in order to help us to understand how the origins of the Christianism come from the plural character of Judaism of this period.Los Manuscritos del Mar Muerto supusieron uno de los hallazgos más relevantes del pasado siglo ya que pretendían ocupar el espacio temporal entre el Judaísmo Clásico y Rabínico y entre el Antiguo y el Nuevo Testamento. Sin embargo, pronto aparecieron estudios centrados en la relación de este corpus con el cristianismo emergente y su filiación con la figura de Jesús. En los últimos años, la línea de investigación preeminente se centra en la ‘recristianización’ de estos manuscritos, basada en la búsqueda de elementos que nos ayuden a comprender cómo los orígenes del cristianismo parten del carácter plural del judaísmo de la época

    Two experiments for the price of one? -- The role of the second oscillation maximum in long baseline neutrino experiments

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    We investigate the quantitative impact that data from the second oscillation maximum has on the performance of wide band beam neutrino oscillation experiments. We present results for the physics sensitivities to standard three flavor oscillation, as well as results for the sensitivity to non-standard interactions. The quantitative study is performed using an experimental setup similar to the Fermilab to DUSEL Long Baseline Neutrino Experiment (LBNE). We find that, with the single exception of sensitivity to the mass hierarchy, the second maximum plays only a marginal role due to the experimental difficulties to obtain a statistically significant and sufficiently background-free event sample at low energies. This conclusion is valid for both water Cherenkov and liquid argon detectors. Moreover, we confirm that non-standard neutrino interactions are very hard to distinguish experimentally from standard three-flavor effects and can lead to a considerable loss of sensitivity to \theta_{13}, the mass hierarchy and CP violation.Comment: RevTex 4.1, 23 pages, 10 figures; v2: Typos corrected, very minor clarifications; matches published version; v3: Fixed a typo in the first equation in sec. III

    Phenomenology of Quantum Gravity and its Possible Role in Neutrino Anomalies

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    New phenomenological models of Quantum Gravity have suggested that a Lorentz-Invariant discrete spacetime structure may become manifest through a nonstandard coupling of matter fields and spacetime curvature. On the other hand, there is strong experimental evidence suggesting that neutrino oscillations cannot be described by simply considering neutrinos as massive particles. In this manuscript we motivate and construct one particular phenomenological model of Quantum Gravity that could account for the so-called neutrino anomalies.Comment: For the proceedings of "Relativity and Gravitation: 100 Years after Einstein in Prague" (June 2012, Prague

    MiniBooNE and LSND data: non-standard neutrino interactions in a (3+1) scheme versus (3+2) oscillations

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    The recently observed event excess in MiniBooNE anti-neutrino data is in agreement with the LSND evidence for electron anti-neutrino appearance. We propose an explanation of these data in terms of a (3+1) scheme with a sterile neutrino including non-standard neutrino interactions (NSI) at neutrino production and detection. The interference between oscillations and NSI provides a source for CP violation which we use to reconcile different results from neutrino and anti-neutrino data. Our best fit results imply NSI at the level of a few percent relative to the standard weak interaction, in agreement with current bounds. We compare the quality of the NSI fit to the one obtained within the (3+1) and (3+2) pure oscillation frameworks. We also briefly comment on using NSI (in an effective two-flavour framework) to address a possible difference in neutrino and anti-neutrino results from the MINOS experiment.Comment: 28 pages, 9 figures, discussion improved, new appendix added, conclusions unchange

    Neutrinoless Double Beta Decay in the Presence of Light Sterile Neutrinos

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    We investigate the predictions for neutrinoless double beta ((\u3b2\u3b2)0\u3bd -) decay effective Majorana mass |\u3008m\u3009| in the 3 + 1 and 3 + 2 schemes with one and two additional sterile neutrinos with masses at the eV scale. The two schemes are suggested by the neutrino oscillation interpretation of the reactor neutrino and Gallium \u201canomalies\u201d and of the data of the LSND and MiniBooNE experiments. We analyse in detail the possibility of a complete or partial cancellation between the different terms in |\u3008m\u3009|, leading to a strong suppression of |\u3008m\u3009|. We determine the regions of the relevant parameter spaces where such a suppression can occure. This allows us to derive the conditions under which the effective Majorana mass satisfies |\u3008m\u3009| > 0.01 eV, which is the range planned to be exploited by the next generation of (\u3b2\u3b2)0\u3bd -experiments. \ua9 SISSA 2013
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