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During International Ocean Discovery Program (IODP) Expedition 397, four sites (U1586, U1587, U1385, and U1588) were drilled on a bathymetric transect across a submarine plateau on the Portuguese continental slope to intersect each major subsurface water mass of the eastern North Atlantic. Site U1587 (37°34.867′N, 10°21.531′W; water depth = 3479 m), the second deepest site along the depth transect and the second most distal from the coastline, was cored for reconstructing changes in physical and chemical properties of the deep eastern North Atlantic on short and long timescales. At this site, coring in three holes recovered 1566 m of sediment from which a continuous 595 m composite sequence of late Miocene to Holocene sediments was developed. The dominant lithologies are nannofossil ooze and clay in varying proportions that were accumulated at an average rate of 10 cm/ky. The high sedimentation rates and expanded section will permit the development of proxy records for high-resolution climate reconstruction spanning the past 7.8 My. Following Expedition 397, the archive halves of the cores used to develop the shipboard composite depth scale of Site U1587 were analyzed using an Avaatech X-ray fluorescence (XRF) core scanner in the Gulf Coast Repository at Texas A&M University (USA) to obtain semiquantitative chemical elemental data at 1 cm resolution. In this report, we present the measured elemental records and the refined composite depth scale (splice) for the Pliocene and Quaternary sections at the site and provide a regression equation for estimating CaCO3 weight percent by using the log(Ca/Ti) values. 

We study Drell-Yan production in universal theories consistently including effects beyond dimension six in the Standard Model effective field theory (SMEFT). Within universal SMEFT and with $C$and $P$conservation we find that 11 dimension-eight operators contribute in addition to the six contributing at dimension six. We first work in an operator basis in which operators with higher derivatives of the bosonic fields have been rotated by equations of motion in favor of combinations of operators involving SM fermion currents. We derive the general form of the amplitudes consistently in the expansion to $\mathcal{O}\left({\mathrm{\Lambda }}^{-4}\right)$and identify eight combinations of the 17 Wilson coefficients which are physically distinguishable by studying the invariant mass distribution of the lepton pairs produced. We then introduce an extension of the parametrization of universal effects in terms of oblique parameters obtained by linearly expanding the self-energies of the electroweak gauge bosons to $\mathcal{O}\left(q^6\right)$. It contains 11 oblique parameters of which only eight are generated within SMEFT at dimension eight: $\hat{S}$, $\hat{T}$, $W$, $Y$, $\hat{U}$, $X$, plus two additional which we label $W^{\prime }$and $Y^{\prime }$and show how they match at linear order with the eight identified combinations of operator coefficients. We then perform a combined analysis of a variety of LHC data on the neutral- and charged-current Drell-Yan processes with the aim of constraining the eight combinations. We compare and combine the LHC bounds with those from electroweak precision $W$and $Z$pole observables which can only provide constraints in four directions of the eight-parameter space. We present the results in terms of limits on the eight effective Wilson coefficients as well as on the eight oblique parameters. In each case, we study the dependence of the derived constraints on the order of the expansion considered. 

We present the basis of dimension-eight operators associated with universal theories. We first derive a complete list of independent dimension-eight operators formed with the Standard Model bosonic fields characteristic of such universal new physics scenarios. Without imposing C or P symmetries the basis contains 175 operators—that is, the assumption of universality reduces the number of independent Standard Model effective field theory (SMEFT) coefficients at dimension eight from 44807 to 175. 89 of the 175 universal operators are included in the general dimension-eight operator basis in the literature. The 86 additional operators involve higher derivatives of the Standard Model bosonic fields and can be rotated in favor of operators involving fermions using the Standard Model equations of motion for the bosonic fields. By doing so we obtain the allowed fermionic operators generated in this class of models which we map into the corresponding 86 independent combinations of operators in the dimension-eight basis of [C. W. Murphy, Dimension-8 operators in the standard model effective field theory, .]. Published by the American Physical Society2024 

Precision measurements of anomalous quartic couplings of electroweak gauge bosons allow us to search for deviations of the Standard Model predictions and signals of new physics. Here, we obtain the constraints on anomalous quartic gauge couplings using the presently available data on the production of gauge-boson pairs via vector boson fusion. We work in the Higgs effective theory framework and obtain the present bounds on the operator’s Wilson coefficients. We show that the combination of different datasets breaks the degeneracies in analysis with more than one nonvanishing Wilson coefficient. Anomalous quartic gauge boson couplings lead to rapidly growing cross sections and we discuss the impact of a unitarization procedure on the attainable limits. 

This work in progress paper presents and motivates the design of a novel extended reality (XR) environment for artificial intelligence (AI) education, and presents its first implementation. The learner is seated at a table and wears an XR headset that allows them to see both the real world and a visualization of a neural network. The visualization is adjustable. The learner can inspect each layer, each neuron, and each connection. The learner can also choose a different input image, or create their own image to feed to the network. The inference is computed on the headset, in real time. The neural network configuration and its weights are loaded from an onnx file, which supports a variety of architectures as well as changing the weights to illustrate the training process. 

A<sc>bstract</sc> We determine the solar neutrino fluxes from the global analysis of the most up-to-date terrestrial and solar neutrino data including the final results of the three phases of Borexino. The analysis are performed in the framework of three-neutrino mixing with and without accounting for the solar luminosity constraint. We discuss the independence of the results on the input from the Gallium experiments. The determined fluxes are then compared with the predictions provided by the latest Standard Solar Models. We quantify the dependence of the model comparison with the assumptions about the normalization of the solar neutrino fluxes produced in the CNO-cycle as well as on the particular set of fluxes employed for the model testing.