We present the first nonperturbatively-renormalized determination of the glue momentum fraction x g in the nucleon, based on lattice-QCD simulations at the physical pion mass using the cluster-decomposition error reduction (CDER) technique. We provide the first practical strategy to renormalize the gauge energy-momentum tensor (EMT) nonperturbatively in the RI/MOM scheme, and convert the results to the MS scheme with 1-loop matching. The simulation results show that the CDER technique can reduce the statistical uncertainty of its renormalization constant by a factor of O(300) in calculations using a typical state-of-the-art lattice volume, and the nonperturbativelyrenormalized x g is shown to be independent of the lattice definitions of the gauge EMT up to discretization errors. We determine the renormalized x MS g (2 GeV) to be 0.47(4)(11) at the physical pion mass, which is consistent with the experimentally-determined value.arXiv:1805.00531v3 [hep-lat]

The Japanese Space Agency's Hayabusa II mission is scheduled to rendezvous 2 with and return a sample from the near-Earth asteroid (162173) 1999 JU3. 3Previous visible-wavelength spectra of this object show significant variability 4 across multiple epochs which could be the result of a compositionally hetero-5 geneous surface. We present new visible and near-infrared spectra to demon-6 strate that thermally altered carbonaceous chondrites are plausible compo-7 sitional analogs, however this is a tentative association due to a lack of any 8 prominent absorption features in our data. We have also conducted a series of

We present near-infrared (0.78-2.45 µm) reflectance spectra for nine middle and outer main belt (a > 2.5 AU) basaltic asteroids. Three of these objects are spectrally distinct from all classifications in the Bus-DeMeo system and could represent spectral end members in the existing taxonomy or be representatives of a new spectral type. The remainder of the sample are classified as V-or Rtype. All of these asteroids are dynamically detached from the Vesta collisional family, but are too small to be intact differentiated parent bodies, implying that they originated from differentiated planetesimals which have since been destroyed or ejected from the solar system. The 1-and 2-µm band centers of all objects, determined using the Modified Gaussian Model (MGM), were compared to those of 47 Vestoids and fifteen HED meteorites of known composition. The HEDs enabled us to determine formulas relating Band 1 and Band 2 centers to pyroxene ferrosilite (Fs) compositions. Using these formulas we present the most comprehensive compositional analysis to date of middle and outer belt basaltic asteroids. We also conduct a careful error analysis of the MGM-derived band centers for implementation in future analyses. The six outer belt V-and R-type asteroids show more dispersion in parameter space than the Vestoids, reflecting greater compositional diversity than Vesta and its associated bodies.The objects analyzed have Fs numbers which are, on average, between five and ten molar percent lower than those of the Vestoids; however, identification and compositional analysis of additional outer belt basaltic asteroids would help to confirm or refute this result. Given the gradient in oxidation state which existed within the solar nebula, these results tentatively suggest that these objects formed at either a different time or location than 4 Vesta.

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The spin-independent and transversity generalized form factors (GFFs) of the ϕ meson are studied using lattice QCD calculations with light quark masses corresponding to a pion mass m π ∼ 450ð5Þ MeV. One transversity and three spin-independent GFFs related to the lowest moments of leading-twist spinindependent and transversity gluon distributions are obtained at six nonzero values of the momentum transfer up to 1.2 GeV 2 . These quantities are compared with the analogous spin-independent quark GFFs and the electromagnetic form factors determined on the same lattice ensemble. The results show quantitative distinction between the spatial distribution of transversely polarized gluons, unpolarized gluons, and quarks and point the way towards further investigations of the gluon structure of nucleons and nuclei.