Random-phase-approximation-type vertex corrections to the axial-vector current

We study the isovector weak response of the core to an external perturbation using linear response theory in nuclear matter. We extend previous results to the kinematic region away from the long wavelength regime where the effects have been proven small. For the muon capture process we found a sizab...

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Publicado: 1994
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p2005_Izquierdo
http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p2005_Izquierdo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_05562813_v49_n4_p2005_Izquierdo
record_format dspace
spelling paper:paper_05562813_v49_n4_p2005_Izquierdo2023-06-08T15:41:40Z Random-phase-approximation-type vertex corrections to the axial-vector current We study the isovector weak response of the core to an external perturbation using linear response theory in nuclear matter. We extend previous results to the kinematic region away from the long wavelength regime where the effects have been proven small. For the muon capture process we found a sizable quenching of the contribution of the induced pseudoscalar term. Applied to actual nuclei, however, the strong density dependence of the weak isovector response washes out the screening found at nuclear matter densities, slightly modifying muon capture rates. © 1994 The American Physical Society. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p2005_Izquierdo http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p2005_Izquierdo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We study the isovector weak response of the core to an external perturbation using linear response theory in nuclear matter. We extend previous results to the kinematic region away from the long wavelength regime where the effects have been proven small. For the muon capture process we found a sizable quenching of the contribution of the induced pseudoscalar term. Applied to actual nuclei, however, the strong density dependence of the weak isovector response washes out the screening found at nuclear matter densities, slightly modifying muon capture rates. © 1994 The American Physical Society.
title Random-phase-approximation-type vertex corrections to the axial-vector current
spellingShingle Random-phase-approximation-type vertex corrections to the axial-vector current
title_short Random-phase-approximation-type vertex corrections to the axial-vector current
title_full Random-phase-approximation-type vertex corrections to the axial-vector current
title_fullStr Random-phase-approximation-type vertex corrections to the axial-vector current
title_full_unstemmed Random-phase-approximation-type vertex corrections to the axial-vector current
title_sort random-phase-approximation-type vertex corrections to the axial-vector current
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p2005_Izquierdo
http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p2005_Izquierdo
_version_ 1768544690040209408

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