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Publicado 2015
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A study of charged-current muon neutrino scattering on hydrocarbon (CH) in which the final state includes a muon, at least one proton, and no pions is presented. Although this signature has the topology of neutrino quasielastic scattering from neutrons, the event sample contains contributions from quasielastic and inelastic processes where pions are absorbed in the nucleus. The analysis accepts events with muon production angles up to 70◦ and proton kinetic energies greater than 110 MeV. The cross section, when based completely on hadronic kinematics, is well-described by a relativistic Fermi gas nuclear model including the neutrino event generator modeling for inelastic processes and particle transportation through the nucleus. This is in contrast to the quasielastic cross section based on muon kinematics, which is best described by an extended model that incorporates multi-nucleon co...
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artículo
Publicado 1992
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This paper attempts to show first that the various interpretations of personal identity afforded by recent trends in phenomenology can be assembled into two distinctive groups. On the one hand, a description has been provided of movements, structures or orders into which supposedly subjectivity is dispersed or decentered (J. Patocka, H. Rombach, B. Waldenfels). On the other, it s contended that subjetivity develops on the ground of an original emotional dimension or as a reply to the requirement of responsibility for others (M. Henry, E. Levinas, P. Ricoeur). Second, the article tries to make clear that the post-Husserlian phenornenologies cannot elude the primary sense of identity which Husserl has designated with the name of ego-pole in order to highlight within the monad a centering and unity moment by which "the ego itself is existent for itself in continous evidence" (Hua. l, 100). ...
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artículo
Publicado 1992
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Este trabajo intenta mostrar en primer lugar que las diversas interpretaciones de la identidad proporcionadas por tendencias recientes en la fenomenología pueden ser reunidas en dos grupos diferentes. De un lado, se ha proporcionado una descripción de los movimientos, estructuras u órdenes en que supuestamente se dispersa o descentra la subjetividad (J. Patocka, H. Rombach, B. Waldenfels). Del otro, se ha sostenido que la subjetividad se desarrolla sobre la base de una dimensión emocional originaria como una respuesta a la exigencia de responsabilidad por los otros (M. Henry, E. Levinas, P. Ricoeur). En segundo lugar, el artículo procura poner en claro que las fenomenologías posthusserlianas no pueden eludir el sentido primario de la identidad que Husserl ha designado con el nombre de polo-yo a fin de poner de relieve dentro de la mónada un momento de centralización y unidad por ...
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artículo
Publicado 1992
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This paper attempts to show first that the various interpretations of personal identity afforded by recent trends in phenomenology can be assembled into two distinctive groups. On the one hand, a description has been provided of movements, structures or orders into which supposedly subjectivity is dispersed or decentered (J. Patocka, H. Rombach, B. Waldenfels). On the other, it s contended that subjetivity develops on the ground of an original emotional dimension or as a reply to the requirement of responsibility for others (M. Henry, E. Levinas, P. Ricoeur). Second, the article tries to make clear that the post-Husserlian phenornenologies cannot elude the primary sense of identity which Husserl has designated with the name of ego-pole in order to highlight within the monad a centering and unity moment by which "the ego itself is existent for itself in continous evidence" (Hua. l, 100). ...
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Puesto que la filosofía de Merleau-Ponty hasido presentada explícitamente como una filosofía de la ambigüedad, es necesario examinar el significado y el alcance de esta noción a lo largo de su desarrollo. En primer lugar, se contrapone la ambigüedad a la ambivalencia en razón de que ésta no nos permite alcanzar intelecciones claras, se diferencian sus dos sentidos -existencial y conceptual-, y se señala su asociación con la dialéctica. Luego el artículo continúa con el examen de las ambigüedades que caracterizaa la relación entre cuerpo y espíritu,lenguaje y espíritu, e historia y coexistencia.Por último, se intenta mostrar la perspectiva para el humanismo que surge de una situación en que la contingencia tiene un papel decisivo, de modo que ningún principio explicativo puede eliminar las dificultades o la opacidad en la interacción social.
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Puesto que la filosofía de Merleau-Ponty ha sido presentada explícitamente como una filosofía de la ambigüedad, es necesario examinar el significado y el alcance de esta noción a lo largo de su desarrollo. En primer lugar, se contrapone la ambigüedad a la ambivalencia en razón de que ésta no nos permite alcanzar intelecciones claras, se diferencian sus dos sentidos -existencial y conceptual-, y se señala su asociación con la dialéctica. Luego el artículo continúa con el examen de las ambigüedades que caracteriza a la relación entre cuerpo y espíritu, lenguaje y espíritu, e historia y coexistencia. Por último, se intenta mostrar la perspectiva para el humanismo que surge de una situación en que la contingencia tiene un papel decisivo, de modo que ningún principio explicativo puede eliminar las dificultades o la opacidad en la interacción social.
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Puesto que la filosofía de Merleau-Ponty hasido presentada explícitamente como una filosofía de la ambigüedad, es necesario examinar el significado y el alcance de esta noción a lo largo de su desarrollo. En primer lugar, se contrapone la ambigüedad a la ambivalencia en razón de que ésta no nos permite alcanzar intelecciones claras, se diferencian sus dos sentidos -existencial y conceptual-, y se señala su asociación con la dialéctica. Luego el artículo continúa con el examen de las ambigüedades que caracterizaa la relación entre cuerpo y espíritu,lenguaje y espíritu, e historia y coexistencia.Por último, se intenta mostrar la perspectiva para el humanismo que surge de una situación en que la contingencia tiene un papel decisivo, de modo que ningún principio explicativo puede eliminar las dificultades o la opacidad en la interacción social.
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artículo
Publicado 2012
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Neutrino interaction events in the detector are visually represented with a web-based tool called Arachne. Data are retrieved from a central server via AJAX, and client-side JavaScript draws images into the user's browser window using the draft HTML 5 standard. These technologies allow neutrino interactions to be viewed by anyone with a web browser, allowing for easy hand-scanning of particle interactions. Arachne has been used in to evaluate neutrino data in a prototype detector, to tune reconstruction algorithms, and for public outreach and education.
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Publicado 2012
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Neutrino interaction events in the MINERνA detector are visually represented with a web-based tool called Arachne. Data are retrieved from a central server via AJAX, and client-side JavaScript draws images into the users browser window using the draft HTML 5 "standard". These technologies allow neutrino interactions to be viewed by anyone with a web browser, allowing for easy hand-scanning of particle interactions. Arachne has been used in MINERνA to evaluate neutrino data in a prototype detector, to tune reconstruction algorithms, and for public outreach and education. © 2012 Published by Elsevier B.V.
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Publicado 2016
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy (DOE) Award No. DE-AC02-07CH11359 which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation (NSF) under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (USA), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior fundacao do Ministerio da Educacao (CAPES) and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) (Brazil), Consejo Nacional de Ciencia y Tecnologia (CoNaCyT) (Mexico), Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT), programs including Fondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT) (Chile), by Consejo Nacional de Ciencia, Tecnologia e Innovacion Tecnologica (CONCYTE...
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Publicado 2017
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Charged-current νμ interactions on carbon, iron, and lead with a final state hadronic system of one or more protons with zero mesons are used to investigate the influence of the nuclear environment on quasielasticlike interactions. The transferred four-momentum squared to the target nucleus, Q2, is reconstructed based on the kinematics of the leading proton, and differential cross sections versus Q2 and the cross-section ratios of iron, lead, and carbon to scintillator are measured for the first time in a single experiment. The measurements show a dependence on the atomic number. While the quasielasticlike scattering on carbon is compatible with predictions, the trends exhibited by scattering on iron and lead favor a prediction with intranuclear rescattering of hadrons accounted for by a conventional particle cascade treatment. These measurements help discriminate between different mod...
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Neutral-current production of Kþ by atmospheric neutrinos is a background in searches for the proton decay p → Kþν¯. Reactions such as νp → νKþΛ are indistinguishable from proton decays when the decay products of the Λ are below detection threshold. Events with Kþ are identified in MINERvA by reconstructing the timing signature of a Kþ decay at rest. A sample of 201 neutrino-induced neutral-current Kþ events is used to measure differential cross sections with respect to the Kþ kinetic energy, and the nonKþ hadronic visible energy. An excess of events at low hadronic visible energy is observed relative to the prediction of the NEUT event generator. Good agreement is observed with the cross section prediction of the GENIE generator. A search for photons from π0 decay, which would veto a neutral-current Kþ event in a proton decay search, is performed, and a 2σ deficit o...
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Publicado 2016
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359 which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Award No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (U.S.A.), by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), and by Latin American Center for Physics (CLAF). We thank the MINOS Collaboration for use of its near detector data. We acknowledge the dedicated work of the Fermilab staff responsible for the operation and maintenance of the beam line and detector, and we thank the Fermilab Computing Division for support of data processing.
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Publicado 2014
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This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359, which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (USA), by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), by Latin American Center for Physics (CLAF), and by RAS and the Russian Ministry of Education and Science (Russia). We thank the MINOS Collaboration for use of its near detector data. Finally, we thank the staff of Fermilab for support of the beam line and the detector.
