Results 31 to 40 of about 5,859,631 (193)

Differential decay rate for B → πlν semileptonic decays [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2001
Abstract We present our study on B → π l ν semileptonic decay form factors using NRQCD action for heavy quark. In the analysis, we use the form factors f 1 (υ· k π ) and f 2 (υ· k π ) defined in the context of heavy quark effective theory by Burdman et al. .
JLQCD Collaboration   +17 more
openaire   +3 more sources

Rheology and decay rate for Frenkel-Biot P1 waves in porous media with gas bubbles [PDF]

open access: yes, 2019
We study the effect of using different rheological schemes in models of Frenkel-Biot elastic waves of P-type in porous media. Two rheological schemes are considered -one with the bubbles and the other without.
Strunin, Dmitry V., Ali, Adham A.
core   +1 more source

Measurement of the decay rate of the radiative Ke30 decay

open access: yesPhysics Letters B, 1996
Abstract Data from the NA31 experiment at CERN have been used to measure the decay K L → π ± e ± νγ ( K e 3 γ 0 ). 1384 ± 53 events of this decay type have been observed. The decay rate relative to K e 3 0 is found to be Γ(K e3γ 0 , E γ ∗ ≥ 30 MeV , Θ e-γ ∗ ≥ 20°) Γ(K e3 0 ...
F. Leber   +31 more
openaire   +1 more source

Decay of Electric Charge on Corona Charged Polyethylene

open access: yes, 2007
In this paper, the surface potential decay of corona-charged low density polyethylene (LDPE) films has been investigated. It has been found that for the same sample thickness the faster decay occurs in the sample with a higher charging voltage.
Zhiqiang Xu   +8 more
core   +2 more sources

Lodgepole Pine Bole Wood Density and Decay Rate 1, 11, and 22 Years After Felling in Central Montana, United States

open access: yesFrontiers in Forests and Global Change, 2021
Estimates of dead and down woody material (DWM) biomass are important for nutrient cycling, wildlife habitat assessment, fire effects and climate change science.
Duncan C. Lutes, Colin C. Hardy
doaj   +1 more source

The decay rate asymmetry of the top quark [PDF]

open access: yesPhysics Letters B, 1993
The asymmetries ${\cal A}_k \equiv [Γ(\twddec) -Γ(\tbwddec)] /[Γ(\twddec) + Γ(\tbwddec)]$ in the partial widths of the top quark decays are discussed within the Standard Model (SM), the Two-Higgs-Doublet Model (2HDM) and supersymmetric extensions of the SM (SSM).
Grzadkowski, B., Keung, W. -Y.
openaire   +2 more sources

Effect of water temperature and fish biomass on environmental DNA shedding, degradation, and size distribution

open access: yesEcology and Evolution, 2019
Environmental DNA (eDNA) analysis has successfully detected organisms in various aquatic environments. However, there is little basic information on eDNA, including the eDNA shedding and degradation processes.
Toshiaki Jo   +4 more
doaj   +1 more source

A note on decay rates for Schrödinger’s equation [PDF]

open access: yesProceedings of the American Mathematical Society, 2010
Summary: We prove the existence of solutions of the Schrödinger equation on \( \mathbb{R}^N\) which decay, in various \( L^p\) spaces, at different rates along different time sequences going to infinity. We establish a similar result for a nonlinear Schrödinger equation.
Xie, Jian   +2 more
openaire   +2 more sources

Monitoring wood decay in poles by the vibroacoustic method [PDF]

open access: yes, 2001
Despite recent advances in the development of new materials, wood continues to be used globally for the support of overhead cable networks used by telecommunications and electrical utility companies.
Thackery, S.   +3 more
core   +3 more sources

Validation of Chlorine Decay Equation for Water Quality Analysis in Distribution Networks

open access: yesEngineering Proceedings, 2023
This article discusses the extent of the spread of contamination in water distribution networks which may enter through a pipe leak, and the decay rate of chlorine for a specified design duration. A comprehensive water quality analysis is performed using
Rehan Jamil   +2 more
doaj   +1 more source

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