1,638 research outputs found
Avoiding the uncertainty from correlation between |Delta m_{31}^2| and CP phase delta in nu_mu --> nu_mu long baseline experiments
We introduce a new index I_{Delta m_{31}^2} to find where is the better setup
of the baseline length and energy to avoid as well as possible the uncertainty
from the correlation between Delta m_{31}^2 and cos(delta) in nu_mu --> nu_mu
long baseline experiments.Comment: 6 pages, 9 figure
The Effects of a Vector-like Doublet as the Fourth Generation to
We study the effects of a vector-like SU(2) doublet quarks as the fourth
generation on and . By considering the constraint from the
experimental data of forward-backward asymmetry, and ,as
well as FCNC among light quarks, we show that there is an allowed region of
parameters for but not for .Comment: 16pages, Latex, uses epic.sty and eepic.st
The Width Difference of Mesons
We estimate \dg/\Gamma_d, including contributions and part of the
next-to-leading order QCD corrections. We find that adding the latter
corrections decreases the value of \dg/\Gamma_d computed at the leading order
by a factor of almost 2. We also show that under certain conditions an upper
bound on the value of \dg/\Gamma_d in the presence of new physics can be
derived. With the high statistics and accurate time resolution of the upcoming
LHC experiment, the measurement of \dg seems to be possible. This measurement
would be important for an accurate measurement of at the LHC. In
addition, we point out the possibility that the measurement of the width
difference leads to a clear signal for new physics.Comment: 5 pages, latex. Talk given at International Europhysics Conference on
High-Energy Physics (HEP 2001), Budapest, Hungary, 12-18 Jul 200
Chemical analysis of soluble fractions from normal and autolysed rabbit liver by column chromatography
Chromatography on Sephadex G-200 was performed with the soluble fraction of homogenated rabbit liver, which was extracted with 0.1 M phosphate buffer containing 0.1 M NaCl. and the influences of autolysis on the soluble fraction of liver were also examined. The soluble fraction of liver was different from serum in molecular weight, in electrophoretic character and in components with sedimentation coefficients. The soluble fraction of liver was stable under the influence of Mg and K ions, and rather unstable in the presence of Na ions. Serum was fractionated in three main peaks. The soluble fraction of liver was fractionated in a similar pattern as of serum, but the first peak contained nucleic acid and lipoprotein. The second contained albumin. 32p radioactivity peaks of the stored sample appeared with change in patterns by autolysis from the original, and were observed wide based and continuous figures in retarded peaks. The correlations with the first peak and retarded peaks were represented by the analysis of phosphorus compounds and electrophoresis. In lipid analysis, both diglyceride and monoglyceride gradually decreased, and phospholipid pattern was observed to increase in retarded peaks by autolysis. Lipoprotein or lipid-albumin complex was gradually converted to smaller molecular weight compounds, and appeared in retarded peaks.</p
A deep brain photoreceptive molecule in the toad hypothalamus
AbstractWe have isolated a cDNA clone encoding a deep brain photoreceptive molecule from the hypothalamic cDNA library of the toad, Bufo japonicus. The deduced amino acid sequence showed the highest similarity to that of pinopsin (75–76%) among vertebrate retinal opsins, indicating the expression of toad pinopsin in the deep brain. Antibodies raised against the C-terminal tail of toad pinopsin stained cell bodies and the knob-like structures of the cerebrospinal fluid-contacting neurons in the anterior preoptic nucleus. This region is known to play an important role in breeding behavior, suggesting that toad pinopsin acts as a photosensor for the photoperiodic gonadal response
Quantum error correction beyond qubits
Quantum computation and communication rely on the ability to manipulate
quantum states robustly and with high fidelity. Thus, some form of error
correction is needed to protect fragile quantum superposition states from
corruption by so-called decoherence noise. Indeed, the discovery of quantum
error correction (QEC) turned the field of quantum information from an academic
curiosity into a developing technology. Here we present a continuous-variable
experimental implementation of a QEC code, based upon entanglement among 9
optical beams. In principle, this 9-wavepacket adaptation of Shor's original
9-qubit scheme allows for full quantum error correction against an arbitrary
single-beam (single-party) error.Comment: realization of a Gaussian error correction protocol suitable for
non-Gaussian error correctio
Large electroweak penguin contribution in B -> K pi and pi pi decay modes
We discuss about a possibility of large electroweak penguin contribution in B
-> K pi and pi pi from recent experimental data. The experimental data may be
suggesting that there are some discrepancies between the data and theoretical
estimation in the branching ratios of them. In B -> K pi decays, to explain it,
a large electroweak penguin contribution and large strong phase differences
seem to be needed. The contributions should appear also in B -> pi pi. We show,
as an example, a solution to solve the discrepancies in both B -> K pi and B ->
pi pi. However the magnitude of the parameters and the strong phase estimated
from experimental data are quite large compared with the theoretical
estimations. It may be suggesting some new physics effects are including in
these processes. We will have to discuss about the dependence of the new
physics. To explain both modes at once, we may need large electroweak penguin
contribution with new weak phases and some SU(3) breaking effects by new
physics in both QCD and electroweak penguin type processes.Comment: 23 pages, 9 figure
The Oblique Corrections from the Diagonal ETC Interaction
We study the effect of the diagonal extended technicolor(ETC) gauge boson on
the oblique correction parameters. It is shown that in the parameter is
unacceptably large when the vertex correction and parameter are
consistent with the experiments in the ETC model.Comment: 11pages, Latex, uses epic.sty and eepic.sty, 5 figures appended as a
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