52 research outputs found
Scale Dependence of Halo Bispectrum from Non-Gaussian Initial Conditions in Cosmological N-body Simulations
We study the halo bispectrum from non-Gaussian initial conditions. Based on a
set of large -body simulations starting from initial density fields with
local type non-Gaussianity, we find that the halo bispectrum exhibits a strong
dependence on the shape and scale of Fourier space triangles near squeezed
configurations at large scales. The amplitude of the halo bispectrum roughly
scales as . The resultant scaling on the triangular shape is consistent
with that predicted by Jeong & Komatsu based on perturbation theory. We
systematically investigate this dependence with varying redshifts and halo mass
thresholds. It is shown that the dependence of the halo bispectrum is
stronger for more massive haloes at higher redshifts. This feature can be a
useful discriminator of inflation scenarios in future deep and wide galaxy
redshift surveys.Comment: 27 pages, 10 figures; revised argument in section 6, added appendix
C, JCAP accepted versio
Measurement of Ï production in pp collisions at âs = 2.76 TeV
The production of Ï(1S), Ï(2S) and Ï(3S)
mesons decaying into the dimuon final state is studied with
the LHCb detector using a data sample corresponding to an
integrated luminosity of 3.3 pbâ1 collected in protonâproton
collisions at a centre-of-mass energy of âs = 2.76 TeV. The
differential production cross-sections times dimuon branching
fractions are measured as functions of the Ï transverse
momentum and rapidity, over the ranges pT < 15 GeV/c
and 2.0 < y < 4.5. The total cross-sections in this kinematic
region, assuming unpolarised production, are measured to be
Ï (pp â Ï(1S)X) Ă B
Ï(1S)âÎŒ+ÎŒâ
= 1.111 ± 0.043 ± 0.044 nb,
Ï (pp â Ï(2S)X) Ă B
Ï(2S)âÎŒ+ÎŒâ
= 0.264 ± 0.023 ± 0.011 nb,
Ï (pp â Ï(3S)X) Ă B
Ï(3S)âÎŒ+ÎŒâ
= 0.159 ± 0.020 ± 0.007 nb,
where the first uncertainty is statistical and the second systematic
A Study of Solvent Extraction of Lipids from Whole Peanut Kernels Using All-Purpose Automatic Solvent Extractor
Averaging lifetimes for B hadron species
The measurement of the lifetimes of the individual B species are of great interest. Many of these measurements are well below the 10% level of precision. However, in order to reach the precision necessary to test the current theoretical predictions, the results from different experiments need to be averaged together. Therefore, the relevant systematic uncertainties of each measurement need to be well defined in order to understand the correlations between the results from different experiments. In this paper we discuss the dominant sources of systematic errors which lead to correlations between the different measurements. We point out problems connected with the conventional approach of combining lifetime data and discuss methods which overcome these problems. (orig.)Available from TIB Hannover: RR 2916(96-04) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman
We Recognize Ourselves as Being Similar to Others: Implications of the âSocial Brain Hypothesisâ for the Biological Evolution of the Intuition of Freedom
PRISM (Polarized Radiation Imaging and Spectroscopy Mission): an extended white paper
Contains fulltext :
126057.pdf (preprint version ) (Open Access
Moeglichkeiten zur Untersuchung dichter, heisser Materie mit einem Schwerionen-Synchrotron
SIGLEDEGerman
Menu Trends in the Quick Service Restaurant Industry During the Various Stages of the Industry Life Cycle (1919-1988)
The high energy spectrum of the 1983, August 1b gamma-ray burst
SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
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