Results 11 to 20 of about 2,616,719 (394)
Mass radius of the proton [PDF]
Physical Review D, 2021 20 pages, 3 figures; 2 typos ...
D. Kharzeev
openaire +5 more sources
A Sharp upper bound for the spectral radius of a nonnegative matrix and applications [PDF]
arXiv, 2016 In this paper, we obtain a sharp upper bound for the spectral radius of a nonnegative matrix. This result is used to present upper bounds for the adjacency spectral radius, the Laplacian spectral radius, the signless Laplacian spectral radius, the ...
Shu, Yujie, You, Lihua, Zhang, Xiao-Dong
core +3 more sources
Inside the Bondi radius of M87 [PDF]
, 2015 Chandra X-ray observations of the nearby brightest cluster galaxy M87 resolve the hot gas structure across the Bondi accretion radius of the central supermassive black hole, a measurement possible in only a handful of systems but complicated by the ...
Broderick, A. E. +3 more
core +5 more sources
The Radius of PSR J0740+6620 from NICER and XMM-Newton Data [PDF]
Astrophysical Journal Letters, 2021 PSR J0740+6620 has a gravitational mass of 2.08 ± 0.07 M ⊙, which is the highest reliably determined mass of any neutron star. As a result, a measurement of its radius will provide unique insight into the properties of neutron star core matter at high ...
M. Miller +27 more
semanticscholar +1 more source
The proton charge radius [PDF]
Reviews of Modern Physics, 2021 Nucleons (protons and neutrons) are the building blocks of atomic nuclei, and are responsible for more than 99\% of the visible matter in the universe.
Haiyan Gao, M. Vanderhaeghen
semanticscholar +1 more source
PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter [PDF]
Astrophysical Journal, 2019 Neutron stars are not only of astrophysical interest, but are also of great interest to nuclear physicists because their attributes can be used to determine the properties of the dense matter in their cores.
M. Miller +22 more
semanticscholar +1 more source
Insects, 2022 Whereas the production of conventional livestock can rely on years of knowledge and experience, the mealworm production industry is still in its early stages.
Lotte Frooninckx +5 more
doaj +1 more source
Pauli Radius of the Proton [PDF]
Chinese Physics Letters, 2021 Using a procedure based on interpolation via continued fractions supplemented by statistical sampling, we analyze proton magnetic form factor data obtained via electron+proton scattering on Q 2 ∈ [0.027, 0.55] GeV2 with the goal of determining the proton magnetic radius. The approach avoids assumptions about the function form used for
Zhu-Fang Cui +3 more
openaire +4 more sources
The proton radius puzzle [PDF]
, 2017 High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy,
Ahmed, M. Abdou +51 more
core +5 more sources
Data‐driven performance metrics for neural network learning
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri +2 more
wiley +1 more source