We present a comprehensive analysis of the γW interference radiative correction to the neutron β-decay matrix element. Within a dispersion relations approach, we compute the axial-vector part of the ...γW box amplitude □γWA in terms of the isoscalar part of the FγW3 interference structure function. Using the latest available phenomenology for FγW3 from the nucleon elastic, resonance, deep-inelastic, and Regge regions, we find the real part of the box correction to be □γWA = 3.90 (9) × 10−3. This improved correction gives a theoretical estimate of the CKM matrix element |Vud|2 = 0.94805 (26), which represents a 4σ violation of unitarity.
We report on the status of the FrPNC experiments and summarize our plans for measurements of parity non-conservation (PNC) in a sample of cold francium. The FrPNC collaboration has commissioned a ...laser cooling apparatus at the TRIUMF accelerator that collects and cools francium atoms for PNC experiments. We have recently demonstrated the robust, high efficiency transfer (50
%
) of laser cooled francium atoms to a second laser cooling apparatus, located 0.7 m below the first, where the PNC experiments will be conducted.
Physical activity (PA) has been identified as beneficial for many diseases and health disorders, including sarcopenia. The positive influence of PA interventions on sarcopenia has been described ...previously on many occasions. Current reviews on the topic include studies with varied PA interventions for sarcopenia; nevertheless, no systematic review exploring the effects of PA in general on sarcopenia has been published. The main aim of this study was to explore the relationship between PA and sarcopenia in older people on the basis of cross-sectional and cohort studies. We searched PubMed, Scopus, EBSCO
, and ScienceDirect for articles addressing the relationship between PA and sarcopenia. Twenty-five articles were ultimately included in the qualitative and quantitative syntheses. A statistically significant association between PA and sarcopenia was documented in most of the studies, as well as the protective role of PA against sarcopenia development. Furthermore, the meta-analysis indicated that PA reduces the odds of acquiring sarcopenia in later life (odds ratio OR =0.45; 95% confidence interval CI 0.37-0.55). The results of this systematic review and meta-analysis confirm the beneficial influence of PA in general for the prevention of sarcopenia.
Muscle weakness and associated diseases are likely to place a considerable economic burden on government health care expenditure. Therefore, our aim for this study was to estimate the direct and ...indirect costs associated with muscle weakness in the Czech Republic. We applied a cost-of-illness approach using data from the Survey of Health, Ageing and Retirement in Europe (SHARE). Six hundred and eighty-nine participants aged 70 years and over and without any long-term illnesses were included in our study. A generalized linear model with gamma distribution was used, and odds ratio (OR) was calculated in order to explore the effect of muscle weakness on direct and indirect costs. For both genders, muscle weakness had a statistically significant impact on direct costs (OR =2.11), but did not have a statistically significant impact on indirect costs (OR =1.08) or on total cost (OR =1.51). Muscle weakness had the greatest statistically significant impact on direct costs in females (OR =2.75). In conclusion, our study has shown that muscle weakness may lead to increased direct costs, and consequently place a burden on health care expenditure. Therefore, the results of this study could lead to greater interest in the prevention of muscle weakness among older people in the Czech Republic.
This White Paper aims at highlighting the important benefits in the science reach of the EIC. High luminosity operation is generally desirable, as it enables producing and harvesting scientific ...results in a shorter time period. It becomes crucial for programs that would require many months or even years of operation at lower luminosity.
This White Paper aims at highlighting the important benefits in the science reach of the EIC. High luminosity operation is generally desirable, as it enables producing and harvesting scientific ...results in a shorter time period. It becomes crucial for programs that would require many months or even years of operation at lower luminosity.
Phys. Rev. D 104, 033003 (2021) We present a comprehensive analysis of the $\gamma W$ interference radiative
correction to the neutron $\beta$-decay matrix element. Within a dispersion
relations ...approach, we compute the axial-vector part of the $\gamma W$ box
amplitude $\Box^{\gamma W}_{A}$ in terms of the isoscalar part of the
$F_3^{\gamma W}$ interference structure function. Using the latest available
phenomenology for $F_3^{\gamma W}$ from the nucleon elastic, resonance,
deep-inelastic, and Regge regions, we find the real part of the box correction
to be $\Box^{\gamma W}_A = 3.90(9) \times 10^{-3}$. This improved correction
gives a theoretical estimate of the CKM matrix element
$|V_{ud}|^2=0.94805(26)$, which represents a 4$\sigma$ violation of unitarity.
We present a comprehensive analysis of the \(\gamma W\) interference radiative correction to the neutron \(\beta\)-decay matrix element. Within a dispersion relations approach, we compute the ...axial-vector part of the \(\gamma W\) box amplitude \(\Box^{\gamma W}_{A}\) in terms of the isoscalar part of the \(F_3^{\gamma W}\) interference structure function. Using the latest available phenomenology for \(F_3^{\gamma W}\) from the nucleon elastic, resonance, deep-inelastic, and Regge regions, we find the real part of the box correction to be \(\Box^{\gamma W}_A = 3.90(9) \times 10^{-3}\). This improved correction gives a theoretical estimate of the CKM matrix element \(|V_{ud}|^2=0.94805(26)\), which represents a 4\(\sigma\) violation of unitarity.
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