Comprehensive Table of Calculated Huff Factors

Fuente: arXiv
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Autori principali: Uesaka, Yuichi, Naito, Tomoya, Ebata, Shuichiro, Niikura, Megumi
Natura: Preprint
Pubblicazione: 2026
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author Uesaka, Yuichi
Naito, Tomoya
Ebata, Shuichiro
Niikura, Megumi
author_facet Uesaka, Yuichi
Naito, Tomoya
Ebata, Shuichiro
Niikura, Megumi
contents We present a systematic calculation of the Huff factor for nuclei with atomic numbers ($ Z $) in the range of $ 6 \leq Z \leq 94 $. The Huff factor quantifies the increase in the partial lifetime of the decay-in-orbit (DIO) of the muonic atom and serves as an essential correction factor for extracting the nuclear muon capture rate from the measured lifetimes of the muonic atom. However, previous calculations typically provided only the atomic number dependence and neglected isotope dependence -- an assumption whose reliability had not been examined, despite its importance for a comprehensive understanding of the nuclear muon capture rate. In this work, we calculate the Huff factor using nuclear charge distributions obtained from a fully self-consistent microscopic nuclear structure model that incorporates pairing and deformation effects. The resulting Huff factors exhibit a monotonic decrease with increasing $ Z $, while the isotope dependence is found to be small. Our results also show good agreement with previous calculations, supporting the reliability of the present framework. The comprehensive set of Huff factors presented here constitutes the first unified values currently available and will serve as a basis for future evaluations of muon nuclear data.
format Preprint
id arxiv_https___arxiv_org_abs_2602_07501
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Comprehensive Table of Calculated Huff Factors
Uesaka, Yuichi
Naito, Tomoya
Ebata, Shuichiro
Niikura, Megumi
Nuclear Theory
High Energy Physics - Phenomenology
Nuclear Experiment
We present a systematic calculation of the Huff factor for nuclei with atomic numbers ($ Z $) in the range of $ 6 \leq Z \leq 94 $. The Huff factor quantifies the increase in the partial lifetime of the decay-in-orbit (DIO) of the muonic atom and serves as an essential correction factor for extracting the nuclear muon capture rate from the measured lifetimes of the muonic atom. However, previous calculations typically provided only the atomic number dependence and neglected isotope dependence -- an assumption whose reliability had not been examined, despite its importance for a comprehensive understanding of the nuclear muon capture rate. In this work, we calculate the Huff factor using nuclear charge distributions obtained from a fully self-consistent microscopic nuclear structure model that incorporates pairing and deformation effects. The resulting Huff factors exhibit a monotonic decrease with increasing $ Z $, while the isotope dependence is found to be small. Our results also show good agreement with previous calculations, supporting the reliability of the present framework. The comprehensive set of Huff factors presented here constitutes the first unified values currently available and will serve as a basis for future evaluations of muon nuclear data.
title Comprehensive Table of Calculated Huff Factors
topic Nuclear Theory
High Energy Physics - Phenomenology
Nuclear Experiment
url https://arxiv.org/abs/2602.07501