37 research outputs found
Long-term treatment and poor management of psychiatric manifestations in mesial temporal sclerosis leading to suicidality in a young male
AbstractPsychiatric disorders including anxiety, psychosis, and aggressive behaviors are frequently diagnosed in patients with epilepsy. In this communication, we report a patients with mesial temporal lobe sclerosis with interictal affective-somatoform (dysphoric) disorders who was never treated for psychiatric manifestations, and who deliberately took a massive dose of phenytoin and phenobarbitone with a motive of suicide, resulting in severe combined toxicity. Such unfortunate incidences may be prevented, and quality of life can be improved with early diagnosis, through the selection of the right antiepileptic drugs, reasonable psychiatric consultation, and appropriate biological and psychological treatments
B_s --> mu+ mu- decay in the R-parity violating minimal supergravity
We study B_s --> mu+ mu- in the context of the R-parity violating minimal
supergravity in the high tan beta regime. We find that the lowest value of the
branching ratio can go well below the present LHCb sensitivity and hence B_s
--> mu+ mu- can even be invisible to the LHC. We also find that the present
upper bound on Br(B_s --> mu+ mu-) puts strong constraint on the minimal
supergravity parameter space. The constraints become more severe if the upper
bound is close to its standard model prediction.Comment: 18 pages, 10 figures; version to be published in European Physical
Journal
Contribution of vector resonances to the {\bar B}_d^0 -> {\bar K}^{*0} mu^+ mu^- decay
The fully differential angular distribution for the rare flavor-changing
neutral current decay \bar{B}_d^0 -> \bar{K}^{*0} (-> K- pi+) mu+ mu- is
studied. The emphasis is placed on accurate treatment of the contribution from
the processes \bar{B}_d^0 -> \bar{K}^{*0} (-> K- pi+) V with intermediate
vector resonances V = rho(770), omega(782), phi(1020), J/psi, psi(2S), ...
decaying into the mu+ mu- pair. The dilepton invariant-mass dependence of the
branching ratio, longitudinal polarization fraction f_L of the \bar{K}^{*0}
meson, and forward-backward asymmetry A_{FB} is calculated and compared with
data from Belle, CDF and LHCb. It is shown that inclusion of the resonance
contribution may considerably modify the branching ratio, calculated in the SM
without resonances, even in the invariant-mass region far from the so-called
charmonia cuts applied in the experimental analyses. This conclusion crucially
depends on values of the unknown phases of the B^0 -> K^{*0} J/psi and B^0 ->
K^{*0} psi(2S) decay amplitudes with zero helicity.Comment: 12 pages, 4 figures, SVJour3 style; introduction and discussion
sections extended, references added; version accepted for publication in Eur.
Phys. J. C. arXiv admin note: substantial text overlap with arXiv:1111.409
Model-independent extraction of matrix elements from top-quark measurements at hadron colliders
Current methods to extract the quark-mixing matrix element from
single-top production measurements assume that : top quarks decay into quarks with 100% branching fraction,
s-channel single-top production is always accompanied by a quark and
initial-state contributions from and quarks in the -channel
production of single top quarks are neglected. Triggered by a recent
measurement of the ratio
performed by the D0 collaboration, we consider a extraction method
that takes into account non zero d- and s-quark contributions both in
production and decay. We propose a strategy that allows to extract consistently
and in a model-independent way the quark mixing matrix elements ,
, and from the measurement of and from single-top
measured event yields. As an illustration, we apply our method to the Tevatron
data using a CDF analysis of the measured single-top event yield with two jets
in the final state one of which is identified as a -quark jet. We constrain
the matrix elements within a four-generation scenario by combining
the results with those obtained from direct measurements in flavor physics and
determine the preferred range for the top-quark decay width within different
scenarios.Comment: 36 pages, 17 figure
Analysis of \Lambda_b \rar \Lambda \ell^+ \ell^- transition in SM4 using form factors from Full QCD
Using the responsible form factors calculated via full QCD, we analyze the
transition in the standard
model containing fourth generation quarks (SM4). We discuss effects of the
presence of fourth family quark on related observables like branching
ratio, forward-backward asymmetry, baryon polarization as well as double lepton
polarization asymmetries. We also compare our results with those obtained in
the SM as well as with predictions of the SM4 but using form factors calculated
within heavy quark effective theory. The obtained results on branching ratio
indicate that the transition
is more probable in full QCD comparing to the heavy quark effective theory. It
is also shown that the results on all considered observables in SM4 deviate
considerably from the SM predictions when .Comment: 22 Pages and 21 Figure
Quantum mechanical effect of path-polarization contextuality for a single photon
Using measurements pertaining to a suitable Mach-Zehnder(MZ) type setup, a
curious quantum mechanical effect of contextuality between the path and the
polarization degrees of freedom of a polarized photon is demonstrated, without
using any notion of realism or hidden variables - an effect that holds good for
the product as well as the entangled states. This form of experimental
context-dependence is manifested in a way such that at \emph{either} of the two
exit channels of the MZ setup used, the empirically verifiable
\emph{subensemble} statistical properties obtained by an arbitrary polarization
measurement depend upon the choice of a commuting(comeasurable) path
observable, while this effect disappears for the \emph{whole ensemble} of
photons emerging from the two exit channels of the MZ setup.Comment: To be published in IJT
Study of Bs-> \phi l^+ l^-$ Decay in a Single Universal Extra Dimension
Utilizing form factors calculated within the light-cone sum rules, we have
evaluated the decay branching ratios of and in a single universal extra dimension model (UED), which is
viewed as one of the alternative theories beyond the standard model (SM). For
the decay , the dilepton invariant mass spectra, the
forward-backward asymmetry, and double lepton polarization are also calculated.
For each case, we compared the obtained results with predictions of the SM. In
lower values of the compactification factor 1/R, the only parameter in this
model, we see the considerable discrepancy between the UED and SM models.
However, when 1/R increases, the results of UED tend to diminish and at , two models have approximately the same predictions.
Compared with data from CDF of , the 1/R tends to be
larger than . We also note that the zero crossing point of
the forward-backward asymmetry is become smaller, which will be an important
plat to prob the contribution from the extra dimension model. The results
obtained in this work will be very useful in searching new physics beyond SM.
Moreover, the order of magnitude for branching ratios shows a possibility to
study these channels at the Large Hadron Collider (LHC), CDF and the future
super-B factory.Comment: 13 pages, 16 figure
Model Independent Analysis of the Forward-Backward Asymmetry for the Decay
The sensitivity of the zero position of the forward backward asymmetry
for the exclusive
decay is examined by using most general non-standard 4-fermion interactions.
Our analysis shows that the zero position of the forward backward asymmetry is
very sensitive to the sign and size of the Wilson coefficients corresponding to
the new vector type interactions, which are the counter partners of the usual
Standard Model operators but have opposite chirality. In addition to these, the
other significant effect comes from the interference of Scalar-Pseudoscalar and
Tensor type operators. These results will not only enhance our theoretical
understanding about the axial vector mesons but will also serve as a good tool
to look for physics beyond the SM.Comment: 14 pages, 8 figures, Published version that appears in EPJ
Effect of participatory women's groups facilitated by Accredited Social Health Activists on birth outcomes in rural eastern India: A cluster-randomised controlled trial
Background: A quarter of the world's neonatal deaths and 15% of maternal deaths happen in India. Few community-based strategies to improve maternal and newborn health have been tested through the country's government-approved Accredited Social Health Activists (ASHAs). We aimed to test the effect of participatory women's groups facilitated by ASHAs on birth outcomes, including neonatal mortality. Methods: In this cluster-randomised controlled trial of a community interve
Not Available
Not AvailableThe investigation aimed to study the impact of capacity building programmes on scientific lac cultivation, processing and uses in terms of knowledge level of farmers. The study was conducted at TOT division, Indian Institute of Natural Resins & Gums (IINRG) Namkum, Ranchi during Nov. 2013 to May 2014. IINRG conducted 17 courses, in which 519 participants were participated; Out of which 125 farmers were randomly selected as respondents for this study. The investigation showed that education, farm size, social participation, lac experiences and sources of information were positively and significantly related to knowledge level of farmers at 5 % level of significance whereas the remaining independent variables viz., age, sex, caste, type of family, family size, occupation and monthly income were not significantly related to knowledge level of farmers on lac cultivation. The percentage changes in knowledge level of respondents towards lac cultivation were found to be 9.60 per cent, 68 per cent and 22.40 per cent, respectively for below average knowledge, average knowledge and above average knowledge after training. . The impact of capacity building programme was gain in knowledge level after training which was significantly higher among farmers for all the lac cultivation practices.Not Availabl