Results 161 to 170 of about 849,846 (204)
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Nuclear Physics A, 2006
Abstract Major astrophysical applications involve a huge number of exotic nuclei. Their beta-decay properties play a crucial role in stellar explosive events. An important effort has been developed in last decades to measure the masses and β -decay properties of very neutron-rich nuclei at radioactive nuclear beam facilities.
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Abstract Major astrophysical applications involve a huge number of exotic nuclei. Their beta-decay properties play a crucial role in stellar explosive events. An important effort has been developed in last decades to measure the masses and β -decay properties of very neutron-rich nuclei at radioactive nuclear beam facilities.
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1989
In this paper we briefly review all positronium (Ps) decay rate measurements (including those of the excited states and the Ps negative ion) that have been completed to date. The results are compared with theoretical values. The Ps system represents the most rigorous confrontation with theoretical decay rate calculations for any QED system.
A. Rich +3 more
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In this paper we briefly review all positronium (Ps) decay rate measurements (including those of the excited states and the Ps negative ion) that have been completed to date. The results are compared with theoretical values. The Ps system represents the most rigorous confrontation with theoretical decay rate calculations for any QED system.
A. Rich +3 more
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2020
We consider $$\displaystyle \begin{aligned} \left\{ \begin{array}{rl} & \partial_t^{\alpha} (u-a) + A(t)u(x,t) = 0 \quad \mbox{in }L^2(\Omega), \, 0 < t < T, \\ & u(\cdot,t) \in H^1_0(\Omega), \quad 0 < t < T, \\ & u-a \in H_{\alpha}(0,T;L^2(\Omega)). \end{array}\right.
Adam Kubica +2 more
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We consider $$\displaystyle \begin{aligned} \left\{ \begin{array}{rl} & \partial_t^{\alpha} (u-a) + A(t)u(x,t) = 0 \quad \mbox{in }L^2(\Omega), \, 0 < t < T, \\ & u(\cdot,t) \in H^1_0(\Omega), \quad 0 < t < T, \\ & u-a \in H_{\alpha}(0,T;L^2(\Omega)). \end{array}\right.
Adam Kubica +2 more
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Physical Review Letters, 1981
The pionic two-body decay amplitude of the proton in the SU(5) grand unified gauge theory is computed by using the soft-pion method in the reference frame of the pion at rest. The normalization condition of the relativistic three-body Bethe-Salpeter wave function of the proton is used in the computation.
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The pionic two-body decay amplitude of the proton in the SU(5) grand unified gauge theory is computed by using the soft-pion method in the reference frame of the pion at rest. The normalization condition of the relativistic three-body Bethe-Salpeter wave function of the proton is used in the computation.
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Physical Review Letters, 1976
The new decay rates of mesons which have been published within the last year are examined to determine their consistency with SU(3) symmetry, vector dominance, and the quark model. It is shown that despite an apparent overall trend of the new data to disagree with certain quark-model predictions by a factor of 3 or so, the consistency of the data with ...
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The new decay rates of mesons which have been published within the last year are examined to determine their consistency with SU(3) symmetry, vector dominance, and the quark model. It is shown that despite an apparent overall trend of the new data to disagree with certain quark-model predictions by a factor of 3 or so, the consistency of the data with ...
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Physical Review D, 1988
We calculate inclusive B decay rates separated according to angular momentum and flavor quantum numbers. In addition to the usual short-distance corrections genuine long-distance effects arise once a separation into longitudinal and transverse components is carried out.
, Grotch, , Schilcher
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We calculate inclusive B decay rates separated according to angular momentum and flavor quantum numbers. In addition to the usual short-distance corrections genuine long-distance effects arise once a separation into longitudinal and transverse components is carried out.
, Grotch, , Schilcher
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Dimensions Dictate Decay Rates
Science's STKE, 2000Dendritic spines are highly mobile structures that are the location of most synaptic input in the central nervous system in mammals. Majewska, Tashiro, and Yuste found a strong correlation between the length of the spine neck and diffusion rates out of the spine, measured as recovery after photobleaching of enhanced green fluorescent protein. They also
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Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 2015
Threat vehicle identification (TVI) is a key warfighter task that is susceptible to memory decay. This research investigates the best predictors of performance decrement in TVI. Thirty U.S. military officers were randomly assigned to groups that trained on TVI using 10 thermal and 10 visible vehicle images on the U.S.
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Threat vehicle identification (TVI) is a key warfighter task that is susceptible to memory decay. This research investigates the best predictors of performance decrement in TVI. Thirty U.S. military officers were randomly assigned to groups that trained on TVI using 10 thermal and 10 visible vehicle images on the U.S.
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On Decaying Rate of Quantum States
Letters in Mathematical Physics, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luo, Shunlong, Zhang, Zhengmin
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Activated decay rate: Finite-barrier corrections
Physical Review E, 1993The activated escape of an underdamped Brownian particle out of a deep potential well is characterized by weak friction \ensuremath{\gamma}\ensuremath{\ll}\ensuremath{\omega} (\ensuremath{\gamma} is the coefficient of friction and \ensuremath{\omega} is a typical frequency of the intrawell motion) and by a large barrier height ${\mathit{U}}_{0 ...
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