The characteristic time of disappearance of electric field in massive electrodynamics during the capture of electric charge by black holes is calculated. It is shown that this time does not depend ...upon the photon mass. The electric field at large distances disappears with the speed of light.
The paper gives current general data on the structure of amyloid fibril and the principles in the classification of amyloidosis, information on the clinical course of cardiac and renal involvements ...in systemic AL and AA amyloidosis, and that on diagnostic and prognostic criteria and the specific features of cardiorenal links. The authors draw the conclusion that the identification of acute and chronic cardiorenal links is of practical value for systemic amyloidosis. Cardiorenal and renocardiac syndromes are not always differentiated clearly in the systemacy of involvement.
A
bstract
We report a measurement of the electric dipole moment of the
τ
lepton (
dτ
) using an 833 fb
−
1
data sample collected near the Υ(4
S
) resonance, with the Belle detector at the KEKB ...asymmetric-energy
e
+
e
−
collider. Using an optimal observable method, we obtain the real and imaginary parts of
d
τ
as Re(
d
τ
) = (
−
0
.
62
±
0
.
63)
×
10
−
17
e
cm and Im(
d
τ
) = (
−
0
.
40
±
0
.
32)
×
10
−
17
e
cm, respectively. These results are consistent with null electric dipole moment at the present level of experimental sensitivity and improve the sensitivity by about a factor of three.
Abstract We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle ϕ 3 (also known as γ) using a model-independent Dalitz plot analysis of B + → D ( K S 0 $$ {K}_S^0 $$ h + h ...− )h +, where D is either a D 0 or D ¯ $$ \overline{D} $$ 0 meson and h is either a π or K. This is the first measurement that simultaneously uses Belle and Belle II data, combining samples corresponding to integrated luminosities of 711 fb −1 and 128 fb −1, respectively. All data were accumulated from energy-asymmetric e + e − collisions at a centre-of-mass energy corresponding to the mass of the Υ(4S) resonance. We measure ϕ 3 = (78.4 ± 11.4 ± 0.5 ± 1.0)°, where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is from the uncertainties on external measurements of the D-decay strong-phase parameters.
The impact of environmental management on water quality carried out in the Tobias Creek watershed area and that of geological processes occurring in the given geoecosystems have been studied. The ...survey based on a basin approach was performed at a watercourse located in a mountainous tourist area under recreational pressure, the latter has been significantly increasing recently due to increasing domestic tourism. The types of hazardous exogenous geological processes affecting the natural environment (including water sources) and economic activities have been identified: linear and planar erosion, landslides, creep, and mudflows. The “hotel complex” and “ski slopes combined with hiking tourist routes” had the greatest negative impact on the natural environment out of the eleven types of territorial environmental management identified by experts. The ecosystem components “flora” and “soil” were subject to the greatest anthropogenic impact. The environmental conditions deteriorated gradually from the creek source to its mouth as followed by bioindication and biotesting. A comparison of geological and anthropogenic factors and the processes occurring in the catchment area within the defined ecological zones allowed us to conclude that biological parameters reflecting processes in the aquatic ecosystems may be used as indicators of the state of the natural environment.
We present a comprehensive study of
B
0
→
ω
ω
decays using
772
×
10
6
B
B
¯
pairs collected with the Belle detector at the KEKB
e
+
e
−
collider. This process is a suppressed charmless decay into ...two vector mesons and can exhibit interesting polarization and
C
P
violation. The decay is observed for the first time with a significance of 7.9 standard deviations. We measure a branching fraction
B
=
(
1.53
±
0.29
±
0.17
)
×
10
−
6
, a fraction of longitudinal polarization
f
L
=
0.87
±
0.13
±
0.13
, and a time-integrated
C
P
asymmetry
A
C
P
=
−
0.44
±
0.43
±
0.11
, where the first uncertainties listed are statistical and the second are systematic. This is the first observation of
B
0
→
ω
ω
and the first measurements of
f
L
and
A
C
P
for this decay.
<supplementary-material>
<copyright-statement>Published by the American Physical Society</copyright-statement>
2024
</supplementary-material>
We report the results of the first search for
B
−
decays to the
Ξ
¯
c
0
Λ
¯
c
−
final state using
711
fb
−
1
of data collected at the
ϒ
(
4
S
)
resonance with the Belle detector at the KEKB ...asymmetric-energy
e
+
e
−
collider. The results are interpreted in terms of both direct baryon-number-violating
B
−
decay and
Ξ
c
0
−
Ξ
¯
c
0
oscillations which follow the standard model decay
B
−
→
Ξ
c
0
Λ
¯
c
−
. We observe no evidence for baryon number violation and set the 95% confidence-level upper limits on the ratio of baryon-number-violating and standard model branching fractions
B
(
B
−
→
Ξ
¯
c
0
Λ
¯
c
−
)
/
B
(
B
−
→
Ξ
c
0
Λ
¯
c
−
)
to be
<
2.7
%
and on the effective angular frequency of mixing
ω
in
Ξ
c
0
−
Ξ
¯
c
0
oscillations to be
<
0.76
ps
−
1
(equivalent to
τ
mix
>
1.3
ps
).
<supplementary-material>
<copyright-statement>Published by the American Physical Society</copyright-statement>
2024
</supplementary-material>
A
bstract
Charged-lepton-flavor-violation is predicted in several new physics scenarios. We update the analysis of
τ
lepton decays into a light charged lepton (
ℓ
=
e
±
or
μ
±
) and a vector meson (
...V
0
=
ρ
0
,
ϕ
,
ω
,
K
*0
, or
K
¯
*0
) using 980 fb
−
1
of data collected with the Belle detector at the KEKB collider. No significant excess of such signal events is observed, and thus 90% credibility level upper limits are set on the
τ
→
ℓV
0
branching fractions in the range of (1.7–4
.
3) × 10
−
8
. These limits are improved by 30% on average from the previous results.
Cardiac amyloidosis is accumulation in the heart of a pathologic fibrillar protein amyloid. It represents a heterogeneous group of states from clinically insignificant amyloid accumulation in ...isolated atrial amyloidosis to severe involvement of the heart in primary amyloidosis when mean duration of life equals to 6 months. Insufficient awareness of physicians of this pathology leads to erroneous and belated diagnosis of cardiac amyloidosis. This paper contains contemporary data of pathophysiology, clinical manifestation, diagnosis, treatment, and prognosis of various variants of cardiac amyloidosis.
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