143,657 research outputs found
First Measurement Of The Jet Cross Section In Polarized p+p Collisions At GeV
We present preliminary measurements of the inclusive jet cross section in the
transverse momentum region 5<<50 GeV/\textit{c} from 0.2 of
polarized p+p data at =200 GeV. The data were corrected for detector
inefficiency and resolution using PYTHIA events processed through a full GEANT
simulation. The measured jet cross section agrees well with NLO pQCD
calculations over seven orders of magnitude. These "proof of principal"
measurements pave the way for ongoing analyses of the higher statistics (
3 ) data sample from the 2005 RHIC run.Comment: Proceedings from PANIC 200
Explicit isogeny descent on elliptic curves
In this note, we consider an l-isogeny descent on a pair of elliptic curves
over Q. We assume that l > 3 is a prime. The main result expresses the relevant
Selmer groups as kernels of simple explicit maps between finite- dimensional
F_l-vector spaces defined in terms of the splitting fields of the kernels of
the two isogenies. We give examples of proving the l-part of the Birch and
Swinnerton-Dyer conjectural formula for certain curves of small conductor.Comment: 17 pages, accepted for publication in Mathematics of Computatio
A Naturalistic Study of the Associations between Changes in Alcohol Problems, Spiritual Functioning and Psychiatric Symptoms
The study evaluated how spiritual and religious functioning (SRF), alcohol-related problems, and psychiatric symptoms change over the course of treatment and follow-up. Problem drinkers (n = 55, including 39 males and 16 females) in outpatient treatment were administered questionnaires at pretreatment, posttreatment, and follow up, which assessed two aspects of SRF (religious well-being and existential well-being), two aspects of alcohol misuse (severity and consequences), and two aspects of psychiatric symptoms (depression and anxiety). Significant improvements in SRF, psychiatric symptoms and alcohol misuse were observed from pretreatment to follow-up. Although SRF scores were significantly correlated with psychiatric symptoms at all three time points, improvement in the former did not predict improvement in the latter. When measured at the same time points, SRF scores were not correlated with the measures of alcohol misuse. However, improvement in SRF (specifically in existential well-being) over the course of treatment was predictive of improvement in the alcohol misuse measures at follow-up. These results suggest that the association between SRF, emotional problems, and alcohol misuse is complex. They further suggest that patients who improve spiritual functioning over the course of treatment are more likely to experience improvement in drinking behavior and alcohol-related problems after treatment has ended. (PsycINFO Database Record (c) 2011 APA, all rights reserved
How and Why lslamophobia is tied to English Nationalism but not to Scottish Nationalism
Muslim minorities throughout Europe are under threat of collateral damage from the Blair/Bush \u27War on Terror.\u27 In Scotland they also have to cope with the added possibility that Scottish nationalism might develop an \u27ethnic\u27 as well as a \u27civic\u27 dimension. But is Scottish nationalism part of the problem or part of the solution? Paradoxically, Muslims are under less pressure in Scotland than in England, despite Scotland\u27s move over recent decades--psychologically as well as institutionally--towards nationalism
Single-Stage Experimental Evaluation of Boundary Layer Blowing Techniques for High Lift Stator Blades. III - Data and Performance of Single-Slotted 0.65 Hub Diffusion Factor Stator
Test on overall and blade element performance of single slotted 0.65 hub diffusion factor stator with self energized blowing boundary layer contro
X-ray Signatures of Circumnuclear Gas in AGN
X-ray spectra of AGN are complex. X-ray absorption and emission features
trace gas covering a wide range of column densities and ionization states. High
resolution spectra show the absorbing gas to be outflowing, perhaps in the form
of an accretion disk wind. The absorbing complex shapes the form of the X-ray
spectrum while X-ray reverberation and absorption changes explain the spectral
and timing behaviour of AGN. We discuss recent progress, highlighting some new
results and reviewing the implications that can be drawn from the data.Comment: Proceedings of the conference "Suzaku 2011, Exploring the X-ray
Universe: Suzaku and Beyond
Pionic Color Transparency
We use a semi-classical approximation to investigate the effects of color
transparency on pion electroproduction reactions. The resulting reduced nuclear
interactions produce significant, but not dominating, differences with the
results of conventional distorted-wave, Glauber-type treatments at kinematics
accessible to Jefferson Laboratory. Nuclear effects that could mimic the
influence of color transparency are also discussed.Comment: 10 pages, 6 figure
Charge Density of the Neutron
A model-independent analysis of the infinite-momentum-frame charge density of
partons in the transverse plane is presented for the nucleon. We find that the
neutron parton charge density is negative at the center, so that the square of
the transverse charge radius is positive, in contrast with many expectations.
Additionally, the proton's central u quark charge density is larger than that
of the d quark by about 70 %. The proton (neutron) charge density has a long
range positively (negatively) charged component.Comment: 7 pages, three figures The replacement mainly concerns correcting an
error made in computing the proton up and down quark densities from the
correctly computed proton and neutron charge densities. The proton central u
quark density is now larger than that of the d quar
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