91 research outputs found
Analysis of the semileptonic (B_c -> B_u* l+ l-) decay from QCD sum rules
We analyze the semileptonic (B_c -> B_u* l+ l-) decay in the frame work of
the Standard Model. We calculate the (B_c) to (B_u*) transition form factors in
QCD sum rules. Analytical expressions for the spectral densities and gluon
condensates are presented. The branching ratio of the (B_c -> B_u* l+ l-) decay
is calculated, and it is obtained that this decay can be detectable at
forthcoming LHC machines.Comment: 17 pages, no figures, LaTeX formatte
One-step generation of high-quality squeezed and EPR states in cavity QED
We show how to generate bilinear (quadratic) Hamiltonians in cavity quantum
electrodynamics (QED) through the interaction of a single driven three-level
atom with two (one) cavity modes. With this scheme it is possible to generate
one-mode mesoscopic squeezed superpositions, two-mode entanglements, and
two-mode squeezed vacuum states (such the original EPR state), without the need
for Ramsey zones and external parametric amplification. The degree of squeezing
achieved is up to 99% with currently feasible experimental parameters and the
errors due to dissipative mechanisms become practically negligible
Investigation of a Protein Complex Network
The budding yeast {\it Saccharomyces cerevisiae} is the first eukaryote whose
genome has been completely sequenced. It is also the first eukaryotic cell
whose proteome (the set of all proteins) and interactome (the network of all
mutual interactions between proteins) has been analyzed. In this paper we study
the structure of the yeast protein complex network in which weighted edges
between complexes represent the number of shared proteins. It is found that the
network of protein complexes is a small world network with scale free behavior
for many of its distributions. However we find that there are no strong
correlations between the weights and degrees of neighboring complexes. To
reveal non-random features of the network we also compare it with a null model
in which the complexes randomly select their proteins. Finally we propose a
simple evolutionary model based on duplication and divergence of proteins.Comment: 19 pages, 9 figures, 1 table, to appear in Euro. Phys. J.
An endeavor for a multidisciplinary case study : discussion on immigration and adaptation from the perspective of Human Sciences : Part 1
application/pdfdepartmental bulletin pape
John J. Bulow, Jr
31-1ClaimsReport : Claim of of J. Bulow, jr. [585] Creek and Seminole wars of 1836.1850-10
Measurement of the LT-asymmetry in \pi^0 electroproduction at the energy of the \Delta (1232) resonance
The reaction p(e,e'p)pi^0 has been studied at Q^2=0.2 (GeV/c)^2 in the region
of W=1232 MeV. From measurements left and right of q, cross section asymmetries
\rho_LT have been obtained in forward kinematics \rho_LT(\theta_\pi^0=20deg) =
(-11.68 +/- 2.36_stat +/- 2.36_sys)$ and backward kinematics
\rho_LT(\theta_\pi^0=160deg) =(12.18 +/- 0.27_stat +/- 0.82_sys). Multipole
ratios \Re(S_1+^* M_1+)/|M_1+|^2 and \Re(S_0+^* M_1+)/|M_1+|^2 were determined
in the framework of the MAID2003 model. The results are in agreement with older
data. The unusally strong negative \Re(S_0+^* M_1+)/|M_1+|^2 required to bring
also the result of Kalleicher et al. in accordance with the rest of the data is
almost excluded.Comment: 7 pages, 7 figures, 4 tables. Changed content. Accepted for
publication in EPJ
Design method for developing a product recovery management system based on life cycle information
maritima
Triglochin maritima Linnaeusseaside arrowgrass;shore arrowgrass;common bog arrowgrass;arrowgrasstroscart maritimemaritimaabandonned channel of Cottonwood Creek south of 4080 So. Between 9th and 11th East.Pasture in an abandone channel. Moist, grazed area.4300 fee
pentandra
Tamarix pentandra PallAmur TamarixAmus TamarixGwen WalkerDeciduous shrub with extremely fine texture. Specimen collected from the Ornamental Block - Sec. 6A, Row 23, Plant 30, Horticulture Station, Brooks, Alberta. Height - 6 ft. Not hardy. Knowles says ""Good specimens are rare in Alta."
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