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Título:
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Search for isotropic ?-radiation in the cosmological window between 65-tev and 200-tev
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Autores:
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Martínez Pabón, María Beatriz ;
Arqueros Martínez, Fernando ;
Fernández Sánchez, Paloma ;
Fonseca, V.
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science BV, 1995-03-16
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Materia = Ciencias: Física: Física nuclear
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Tipo = Artículo
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Resumen:
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Electromagnetic energy injected into the universe above a few hundred TeV is expected to pile up as ? radiation in a relatively narrow energy interval below 100 TeV due to its interaction with the 2.7°K background radiation. We present an upper limit (90% C.L.) on the ratio of primary ? to charged cosmic rays in the energy interval 65-160 TeV (80- 200 TeV) of 10.3 . 10¯³(7.8 . 10¯³). Data from the HEGRA cosmic-ray detector complex consisting of a wide angle Cerenkov array (AIROBICC) measuring the lateral distribution of air ?erenkov light and a scintillator array, were used with a novel method to discriminate ?-ray and hadron induced air showers. If the presently unmeasured universal far infrared background radiation is not too intense, the result rules out a topological-defect origin of ultrahigh energy cosmic rays for masses of the X particle released by the defects equal to or larger than about 10_(16) GeV.
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En línea:
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https://eprints.ucm.es/43020/2/FS%C3%A1nchez%20P%2002%20LIBRE%2BCC.pdf
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