Results 11 to 20 of about 4,641,185 (396)

Relation between the $2νββ$ and $0νββ$ nuclear matrix elements [PDF]

open access: yes, 2011
A formal relation between the GT part of the nuclear matrix elements $M^0\nu}_{GT}$ of $0\nu\beta\beta$ decay and the closure matrix elements $M^{2\nu}_{cl}$ of $2\nu\beta\beta$ decay is established. This relation is based on the integral representation of these quantities in terms of their dependence on the distance $r$ between the two nucleons ...
Vogel, Petr, Šimkovic, Fedor
arxiv   +5 more sources

A beta-beta achievability bound with applications [PDF]

open access: yes2016 IEEE International Symposium on Information Theory (ISIT), 2016
International Zurich Seminar on Communications ...
Yang, Wei   +4 more
openaire   +6 more sources

Relativistic configuration-interaction density functional theory: Nonaxial effects on nuclear $ββ$ decay [PDF]

open access: yesScience Bulletin 69, 2017-2020 (2024), 2023
The relativistic configuration-interaction density functional theory is developed for even-even and odd-odd nuclei and is used to predict the nuclear matrix element of the neutrinoless $\beta\beta$ ($0\nu\beta\beta$) decay in nucleus $^{76}$Ge, amongst the most promising $\beta\beta$-decay candidates.
arxiv   +1 more source

Beta uncertainty [PDF]

open access: yesJournal of Banking & Finance, 2020
A stock’s exposure to systematic risk factors is surrounded by substantial uncertainty. This beta uncertainty is both economically and statistically significantly priced in the cross-section of stock returns. Stocks with high beta uncertainty substantially underperform those with low beta uncertainty: a two-standard-deviation increase in the measure ...
Fabian Hollstein   +2 more
openaire   +1 more source

Neutrinoless $ββ$-decay nuclear matrix elements from two-neutrino $ββ$-decay data [PDF]

open access: yes, 2022
We study two-neutrino ($2\nu\beta\beta$) and neutrinoless double-$\beta$ ($0\nu\beta\beta$) decays in the nuclear shell model and proton-neutron quasiparticle random-phase approximation (pnQRPA) frameworks. Calculating the decay half-life of several dozens of nuclei ranging from calcium to xenon with the shell model, and of $\beta\beta$ emitters with a
arxiv   +1 more source

Subshifts of finite type and matching for intermediate $β$-transformations [PDF]

open access: yes, 2022
We focus on the relationships between matching and subshift of finite type for intermediate $\beta$-transformations $T_{\beta,\alpha}(x)=\beta x+\alpha $ ($\bmod$ 1), where $x\in[0,1]$ and $(\beta,\alpha) \in \Delta:= \{ (\beta, \alpha) \in \mathbb{R}^{2}:\beta \in (1, 2) \; \rm{and} \; 0 < \alpha <2 - \beta\}$.
arxiv   +1 more source

$γγ$ decay as a probe of neutrinoless $ββ$ decay nuclear matrix elements [PDF]

open access: yesPhysics Letters B 827 (2022) 136965, 2021
We study double gamma ($\gamma\gamma$) decay nuclear matrix elements (NMEs) for a wide range of nuclei from titanium to xenon, and explore their relation to neutrinoless double-beta ($0\nu\beta\beta$) NMEs. To favor the comparison, we focus on double-magnetic dipole transitions in the final $\beta\beta$ nuclei, in particular the $\gamma\gamma$ decay of
arxiv   +1 more source

COPPER ENZYMES IN ISOLATED CHLOROPLASTS. POLYPHENOLOXIDASE IN BETA VULGARIS.

open access: yesPlant Physiology, 1949
The chloroplast, as the seat of chlorophyll pigments in plants, occupies a unique position in the economy of the green cell. In recent years there has been a renewed interest in the reactions and properties of chloroplasts as a result of the work of Hill
D. Arnon
semanticscholar   +1 more source

Beta Thalassemia

open access: yesDefinitions, 2020
The signs and symptoms of thalassemia major appear within the first 2 years of life. Children develop life-threatening anemia. They do not gain weight and grow at the expected rate (failure to thrive) and may develop yellowing of the skin and whites of ...

semanticscholar   +1 more source

Government Procurement Policy: Comparative Study between Indonesia and The United States [PDF]

open access: yes, 2022
Public procurement is not just a process to obtain goods/services but can encourage and strengthen public policy. This study compared government procurement policies in Indonesia and the U.S. to prepare public procurement policies.
Romadiyanti, Beta
core   +2 more sources

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