Auto-Concealment of Supersymmetry in Extra Dimensions

In supersymmetric (SUSY) theories with extra dimensions the visible energy in sparticle decays can be significantly reduced and its energy distribution broadened, thus significantly weakening the present collider limits on SUSY. The mechanism applies when the lightest supersymmetric particle (LSP) is a bulk state-- e.g. a bulk modulino, axino, or gravitino-- the size of the extra dimensions larger than ~$10^{-14}$ cm, and for a broad variety of visible sparticle spectra. In such cases the lightest ordinary supersymmetric particle (LOSP), necessarily a brane-localised state, decays to the Kaluza-Klein (KK) discretuum of the LSP. This dynamically realises the compression mechanism for hiding SUSY as decays into the more numerous heavier KK LSP states are favored. We find LHC limits on right-handed slepton LOSPs evaporate, while LHC limits on stop LOSPs weaken to ~350-410 GeV compared to ~700 GeV for a stop decaying to a massless LSP. Similarly, for the searches we consider, present limits on direct production of degenerate first and second generation squarks drop to ~450 GeV compared to ~800 GeV for a squark decaying to a massless LSP. Auto-concealment typically works for a fundamental gravitational scale of $M_*$~10-100 TeV, a scale sufficiently high that traditional searches for signatures of extra dimensions are mostly avoided. If superpartners are discovered, their prompt, displaced, or stopped decays can also provide new search opportunities for extra dimensions with the potential to reach $M_*$~$10^9$ GeV. This mechanism applies more generally than just SUSY theories, pertaining to any theory where there is a discrete quantum number shared by both brane and bulk sectors.Comment: 22 pages, 13 figures. Minor changes to match published versio

Traumatic Cancer in Workmen\u27s Compensation

It is difficult today to prove a relation between single trauma and cancer in workmen\u27s compensation, except in isolated cases. The possibility now seems to exist, however, in view of numerous recent decisions, that more and more of these claims will be allowed in the near future, and that more awards of compensation will be sustained

On the geometric trinity of gravity, non-relativistic limits, and Maxwell gravitation

We show that the common core of the recently-discovered non-relativistic geometric trinity of gravity is Maxwell gravitation. Moreover, we explain why no such dynamical common core exists in the case of the better-known relativistic geometric trinity of gravity

Testing isosource : stable isotope analysis of a tropical fishery with diverse organic matter sources

Author Posting. © Ecological Society of America, 2006. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecology 87 (2006): 326–333, doi:10.1890/05-0721.We sampled consumers and organic matter sources (mangrove litter, freshwater swamp-forest litter, seagrasses, seagrass epiphytes, and marine particulate organic matter [MPOM]) from four estuaries on Kosrae, Federated States of Micronesia for stable isotope (δ13C and δ34S) analysis. Unique mixing solutions cannot be calculated in a dual-isotope, five-endmember scenario, so we tested IsoSource, a recently developed statistical procedure that calculates ranges in source contributions (i.e., minimum and maximum possible). Relatively high minimum contributions indicate significant sources, while low maxima indicate otherwise. Litter from the two forest types was isotopically distinguishable but had low average minimum contributions (0–8% for mangrove litter and 0% for swamp-forest litter among estuaries). Minimum contribution of MPOM was also low, averaging 0–13% among estuaries. Instead, local marine sources dominated contributions to consumers. Minimum contributions of seagrasses averaged 8–47% among estuaries (range 0–88% among species). Minimum contributions of seagrass epiphytes averaged 5–27% among estuaries (range 0–69% among species). IsoSource enabled inclusion of five organic matter sources in our dual-isotope analysis, ranking trophic importance as follows: seagrasses > seagrass epiphytes > MPOM > mangrove forest > freshwater swamp-forest. IsoSource is thus a useful step toward understanding which of multiple organic matter sources support food webs; more detailed work is necessary to identify unique solutions.This research was funded through a research joint venture agreement between the USDA and CMP at the University of Georgia

openWAR: An Open Source System for Evaluating Overall Player Performance in Major League Baseball

Within baseball analytics, there is substantial interest in comprehensive statistics intended to capture overall player performance. One such measure is Wins Above Replacement (WAR), which aggregates the contributions of a player in each facet of the game: hitting, pitching, baserunning, and fielding. However, current versions of WAR depend upon proprietary data, ad hoc methodology, and opaque calculations. We propose a competitive aggregate measure, openWAR, that is based upon public data and methodology with greater rigor and transparency. We discuss a principled standard for the nebulous concept of a "replacement" player. Finally, we use simulation-based techniques to provide interval estimates for our openWAR measure.Comment: 27 pages including supplemen

NEO-INSTITUCIONALISMO: FATORES ORGANIZACIONAIS NA VIDA POLÍTICA

As teorias políticas contemporâneas tendem a retratar a política como um reflexo da sociedade; os fenômenospolíticos como as conseqüências agregadas do comportamento individual; a ação como o resultado deescolhas baseadas no interesse pessoal calculado; a história como sendo eficiente no alcance de desfechossingulares e adequados e a tomada de decisões e a alocação de recursos como os focos centrais da vidapolítica. Entretanto, um pensamento teórico recente na Ciência Política combina elementos desses estilosteóricos com uma preocupação mais antiga a respeito das instituições. Esse neo-institucionalismo enfatizaa autonomia relativa das instituições políticas, as possibilidades de ineficiência na história e a importânciada ação simbólica para um entendimento da política. Tais idéias possuem uma razoável base empírica,mas não se caracterizam por formas teóricas poderosas. Entretanto, pode-se identificar algumas direçõespara a pesquisa teórica nas concepções institucionalistas da ordem política: esse é o nosso objetivo nesteartigo

Subchronic Inhalation of soluable manganese induces expression of hypoxia-associated angiogenic genes in adult mouse lungs

Submitted by Rebecca Lindley ([email protected]) on 2008-07-02T21:10:10Z No. of bitstreams: 1 Falgout Research Paper.pdf: 3890274 bytes, checksum: 3fb8e859e0880b589fc90f979305ab25 (MD5