428 research outputs found
W-+ H+- production and CP asymmetry at the LHC
The dominant contributions to W-+ H+- production at the LHC are the
tree-level b anti-b annihilation and the gg fusion. We perform for the case of
the complex MSSM a complete calculation of the NLO EW corrections to the b
anti-b annihilation channel and a consistent combination with other
contributions including the standard and SUSY QCD corrections and the gg
fusion, with resummation of the leading radiative corrections to the
bottom-Higgs couplings and the neutral Higgs-boson propagators. We observe a
large CP-violating asymmetry, arising mainly from the gg channel.Comment: 33 pages, 21 figures, a few typos corrected, one reference adde
On the existence and exponential attractivity of a unique positive almost periodic solution to an impulsive hematopoiesis model with delays
In this paper, a generalized model of hematopoiesis with delays and impulses
is considered. By employing the contraction mapping principle and a novel type
of impulsive delay inequality, we prove the existence of a unique positive
almost periodic solution of the model. It is also proved that, under the
proposed conditions in this paper, the unique positive almost periodic solution
is globally exponentially attractive. A numerical example is given to
illustrate the effectiveness of the obtained results.Comment: Accepted for publication in AM
What Makes for an Effective Commune Health Center?
This report, based on the main findings from a large-scale longitudinal study of rural health care in Viet Nam from 2008 to 2016, aims to develop the basic components of effective commune health center (CHC) models for different rural areas in Viet Nam.CHCs form the grassroots public health care system in rural Viet Nam, where two-thirds of the country's people live. The centers provide basic preventive care along with initial diagnoses, treatments and referrals to public hospitals.The report includes:A toolkit for assessing CHCs in different contexts identifying best practicesAn analysis of three models for the effective CHCPolicy recommendations aimed at developing major components of CHC model
NLO electroweak corrections to doubly-polarized production at the LHC
We present new results of next-to-leading order (NLO) electroweak corrections
to doubly-polarized cross sections of production at the LHC. The
calculation is performed for the leptonic final state of using the double-pole approximation in the diboson
center-of-mass frame. NLO QCD corrections and subleading contributions from the
, , induced processes are taken into account in
the numerical results. We found that NLO EW corrections are small for angular
distributions but can reach tens of percent for transverse momentum
distributions at high energies, e.g. reaching at
GeV. In these high regions, EW corrections are largest for the
doubly-transverse mode.Comment: 15 pages, 1 table, 5 figure
HI emission from the red giant Y CVn with the VLA and FAST
Imaging studies with the VLA have revealed HI emission associated with the
extended circumstellar shells of red giants. We analyse the spectral map
obtained on Y CVn, a J-type carbon star on the AGB. The HI line profiles can be
interpreted with a model of a detached shell resulting from the interaction of
a stellar outflow with the local interstellar medium. We reproduce the spectral
map by introducing a distortion along a direction corresponding to the star's
motion in space. We then use this fitting to simulate observations expected
from the FAST radiotelescope, and discuss its potential for improving
ourdescription of the outer regions of circumstellar shells.Comment: accepted for publication in RA
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