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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Strong enhancement of level densities in the crossover from spherical to deformed neodymium isotopes
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Direct fusion measurement of the 8B proton-halo nucleus at near-barrier energies
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Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII
The electromagnetic process e + e - → $p\bar{p}$ is studied with the initial-state-radiation technique using 7.5 fb -1 of data collected by the BESIII experiment at seven energy points from 3.773 to 4.600 GeV. The Born cross section and the effective form factor of the proton are measured from the production threshold to 3.0 GeV/c 2 using the $p\bar{p}$ invariant-mass spectrum. The ratio of electric and magnetic form factors of the proton is determined from the analysis of the proton-helicity angular distribution.
Transverse Λ polarization in e + e - collisions
In this paper we study transverse polarization of hyperons in single-inclusive leptonic annihilation. We show that when the transverse momentum of the baryon is measured with respect to the thrust axis, a transverse momentum dependent (TMD) factorization formalism is required and the polarization is generated by the TMD polarizing fragmentation function (TMD PFF), D 1 T ⊥ . However, when the transverse momentum of the baryon is measured with respect to the momentum of the initial leptons, a collinear twist-3 formalism is required and the polarization is generated by the intrinsic collinear twist-3 fragmentation function D T . Thus while these measurements differ from one another only by a change in the measurement axis, they probe different distribution functions. Recently, Belle measured a significant polarization in single-inclusive baryon production as a function of the transverse momentum with respect to the thrust axis. However, this data can in principle be re-analyzed to measure the polarization as a function of the transverse momentum of the baryon with respect to the lepton pair. This observable could be the first significant probe of the function, D T . In this paper, we first develop a TMD formalism for polarization; we then present a recent twist-3 formalism that was established to describe polarization. Using the TMD formalism, we demonstrate that the polarization at OPAL and Belle can be described using the twist-2 TMD factorization formalism. Finally, we make a theoretical prediction for this polarization in the collinear twist-3 formalism at Belle.
Gauged lepton number, Dirac neutrinos, dark matter, and muon g − 2
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Multi-field dark energy: Cosmic acceleration on a steep potential
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Determine the neutron skin type by relativistic isobaric collisions
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Non-Abelian gauge lepton symmetry as the gateway to dark matter
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Gas heating from spinning and non-spinning evaporating primordial black holes
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Anomalous muon magnetic moment, supersymmetry, naturalness, LHC search limits and the landscape
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The effects of multiple modes and reduced symmetry on the rapidity and robustness of slow contraction
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Λ polarization from thermalized jet energy
We examine the formation of vortical “smoke rings” as a result of thermalization of energy lost by a jet. We simulate the formation and evolution of these rings using hydrodynamics and define an observable that allows to probe this phenomenon experimentally. We argue that observation of vorticity associated with jets would be an experimental confirmation of the thermalization of the energy lost by quenched jets, and also a probe of shear viscosity.
A dispersive estimate of scalar contributions to hadronic light-by-light scattering
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Superheavy WIMP dark matter from incomplete thermalization
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