7,700 research outputs found
Dark Matter Phenomenology
I review recent developments in the direct and indirect detection of dark
matter and new candidates beyond the WIMP paradigm.Comment: 6 pages, to appear in the Proceedings of the Tenth Conference on the
Intersections of Particle and Nuclear Physics (CIPANP 2009), San Diego,
California, 26-31 May 200
Empirical Investigation into the Limitations of the Normative Paired Sales Adjustment Method
This study investigates the normative paired sales adjustment method employed by appraisers in the sales comparison approach. It finds that the method fails to account for the diminishing marginal price effects of property attributes. The study develops an empirical model to test the marginal price effects of view and lot-size amenities. The finding is that the empirical data confirm land economic theory and identify a need to study and develop improved methods for estimating adjustments to comparable sales.
Cosmic Ray Muons Timing in the ATLAS Detector
In this talk I discuss the use of calorimeter timing both for detector
commissioning and in searches for new physics. In particular I present real and
simulated cosmic ray muons data results for the ATLAS Tile Calorimeter system.
The analysis shows that several detector errors such as imperfect calibrations
can be uncovered. I also demonstrate the use of ATLAS Tile Calorimeters
excellent timing resolution in suppressing cosmic ray fake missing transverse
energy in searches for supersymmetry.Comment: Proceedings of CIPANP 2009, peer-reviewed by the ATLAS Collaboratio
Hadronic and Spin Physics: Review
I will summarize the numerous contributions which were presented in the
session,
Hadronic and Spin Physics, largely dominated by new experimental results.Comment: 9 pages, 4 figures, Invited talk presented at CIPANP 2009, San Diego,
California, USA, May 26-31 2009, To appear in the AIP Conference Proceeding
Generalized Parton Distributions, Deeply Virtual Compton Scattering and TMDs
Parton distributions in impact parameter space, which are obtained by Fourier
transforming GPDs, exhibit a significant deviation from axial symmetry when
target and/or quark are transversely polarized. In combination with the final
state interactions, this transverse deformation provides a natural mechanism
for naive-T odd transverse single-spin asymmetries in semi-inclusive DIS. The
deformation of PDFs in impact parameter space can also be related to the
transverse force acting on the active quark in polarized DIS at higher twist.Comment: 4 pages, invited talk at CIPANP0
Photon-jet coincidence measurements in polarized pp collisions at sqrt{s}=200 GeV with the STAR Endcap Calorimeter
Recent inclusive measurements with polarized proton-proton collisions at RHIC
provide significant constraints on the polarized gluon distribution, Delta
g(x), integrated over the gluon momentum range 0.02 < x < 0.3. Di-jet and
photon-jet coincidence measurements will allow to study the x-dependence of
Delta g(x). In this report we present the status of photon-jet coincidence
studies for photons detected at forward pseudorapidity, 1.08<eta<2, using the
STAR Endcap Calorimeter.Comment: Talk given at the Tenth Conference on the Intersections of Particle
and Nuclear Physics (CIPANP 2009), 26-31 May 2009, San Diego CA, USA; 4
pages, 3 figure
A simple model for spectral swapping of supernova neutrinos
Neutrinos emitted from a core-collapse supernova can experience collective
flavor transformation because of high neutrino fluxes. As a result, neutrinos
of different flavors can have their energy spectra (partially) swapped, a
phenomenon known as the (stepwise) spectral swapping or spectral split. We give
a brief review of a simple model that explains this phenomenon.Comment: 4 pages, 2 figures, prepared for the proceedings of CIPANP 09, San
Diego, USA, March 26-31, 200
Photon+jets measurements at D0
In this paper, we present a few measurements done at the D0 experiment at the
Fermilab Tevatron Collider. These measurements include the triple differential
cross sections of the photon and associated jet production, the photon and
heavy flavour (b and c) jet, and finally, study of the event with double parton
scattering using photon+3 jets events. Each section below presents a brief
description of those measurements and results.Comment: To be published in the proceedings of DPF-2009, Detroit, MI, July
2009, eConf C09072
- …