Sturcture of the Goldstone Bosons

The feasibility of measuring the pion and kaon structure functions has been investigated. A high luminosity electron-proton collider would make these measurements feasible. Also, it appears feasible to measure these structure functions in a nuclear medium. Simulations using the RAPGAP Monte Carlo of a possible pion structure function measurement are presented.Comment: To appear in the proceedings of the Second Workshop on Physics with an Electron Polarized Light-Ion Collider, 14-16 Sept 2000, Cambridge, Ma 6 pages, 5 figures, late

Characterizing a benchmark scenario for heavy Higgs boson searches in the Georgi-Machacek model

The Georgi-Machacek model is used to motivate and interpret LHC searches for doubly- and singly-charged Higgs bosons decaying into vector boson pairs. In this paper we study the constraints on and phenomenology of the "H5plane" benchmark scenario in the Georgi-Machacek model, which has been proposed for use in these searches. We show that the entire H5plane benchmark is compatible with the LHC measurements of the 125 GeV Higgs boson couplings. We also point out that, over much of the H5plane benchmark, the lineshapes of the two CP-even neutral heavy Higgs bosons $H$ and $H_5^0$ will overlap and interfere when produced in vector boson fusion with decays to $W^+W^-$ or $ZZ$. Finally we compute the decay branching ratios of the additional heavy Higgs bosons within the H5plane benchmark to facilitate the development of search strategies for these additional particles.Comment: 18 pages, 18 figures. v2: title changed, refs added, discussion clarified, version accepted by PR

No-till summerfallow

Non-Peer Reviewe

Some effects of the Atlantic circulation and of river discharges on the residual circulation of the North Sea

In a previous paper the simulation of the tidal and wind generated mean residual circulation in the North Sea was studied, with special references to pollution problems. In that paper, the influence of the Atlantic circulation on the North Sea has been neglected. Referring to the above mentioned paper, in this study the net inflow via the Dover Strait, Kattegat and rivers is simulated in the model. The model runs were repeated, yielding a significant improvement in comparison with observed data. © 1979 Deutsches Hydrographisches Institut

Geochemical cycles in an ocean general circulation model. Preindustrial tracer distributions

A state-of-the-art report is given of the Hamburg model of the oceanic carbon cycle. The model advects geochemical tracers important to the carbon cycle by the currents of a general circulation model. The geochemical cycling is driven by a Michaelis - Menten type production kinetics. The model is an extension of the Bacastow and Maier-Reimer (1990) model. It is based-on-a more realistic current field and includes a mechanism of lysocline - sediment interaction. Principal variables are SIGMACO2, alkalinity. phosphate, oxygen, and silicate. The carbon variables are defined for C-12, C-13, and C-14 separately. In addition to these carbon isotopes, 39A and deltaO-18 of dissolved oxygen are predicted. The model predicts realistic global patterns of tracer distribution. In the equatorial eastern Pacific, however, the structures are exaggerated due to a strong upwelling which is a common feature of coarse resolution models of the general circulation of the ocean

College Students’ Disenfranchised Grief Following a Breakup: The Effect of Relationship Closeness and Perceived Stigma on Grief

Grief is a universal reaction to loss. Losses are often associated to the death of a loved one, however, they may also originate from the end of an intimate partner relationship. Whereas studies have focused on grief after a divorce or on symptomology students endure after a death, this article attends to the understudied college student experience of grief following a breakup. Within emerging adulthood, the loss of a close romantic relationship may be challenging to navigate alongside the daily stressors of college. Stigmatization by means of social cues convey sentiments, such as the need to get over an ex-partner, which in turn can lead to disenfranchised grief where individuals do not feel heard, accepted, or valid in their experience of grief. It was hypothesized that as endorsed closeness of the past relationship increases so does grief intensity, and that as feelings of stigmatization increase also increases grief intensity. Multiple regression models supported the main effects, although the interaction effect between levels of closeness and perceived stigmatization was not supported. Implications and future directions are discussed