-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
G. Filipov,
A. Yu. Isupov,
V. I. Ivanov,
A. A. Kartamyshev, V. A. Kashirin, [......],
V. A. Kuznetsov,
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
V. N. Zhmyrov,
L. S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The tensor A
yy
and vector A
y
analyzing powers in the inelastic scattering of deuterons with a momentum of 4.5 GeV/c on beryllium at an angle of ∼80 mr
in the vicinity of baryonic resonances excitation have been measured. The A
yy
data being in good agreement with the previous results obtained at a zero angle demonstrate an approximate t scaling up to ∼ −0.9 (GeV/c)2. The results of the experiment are compared with the predictions of the multiple-scattering and ω-meson exchange models.
European Physical Journal A 04/2012; 8(3):409-416. · 2.19 Impact Factor
-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
Yu. T. Borzounov,
G. Filipov,
L. B. Golovanov,
A. Yu. Isupov,
V. I. Ivanov, [......],
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
A. P. Tzvinev,
V. N. Zhmyrov,
L. S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The angular dependence of the tensor A
yy and vector A
y analyzing powers in the inelastic scattering of deuterons with a momentum of 9.0 GeV/c on hydrogen and carbon has been measured. The range of measurements corresponds to the baryonic resonance excitation with
masses of ∼2.2–2.6 GeV/c
2. The A
yy data, being in good agreement with the previous results, demonstrate an approximate t scaling up to −1.5 (GeV/c)2. The large values of A
y show a significant role of the spin-dependent part of the elementary amplitude of the NN → NN* reaction. The results of the experiment are compared with model predictions of the plane-wave impulse approximation.
Physics of Atomic Nuclei 01/2006; 69(5):852-859. · 0.57 Impact Factor
-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
Yu. T. Borzounov,
L. B. Golovanov,
A. Yu. Isupov,
V. I. Ivanov,
A. A. Kartamyshev, [......],
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
A. P. Tzvinev,
V. N. Zhmyrov,
L. S. Zolin,
G. Filipov
[show abstract]
[hide abstract]
ABSTRACT: The angular dependence of the tensor Ayy and vector Ay analyzing powers in the inelastic scattering of deuterons with a momentum of 9.0 GeV/c on hydrogen and carbon have been measured. The range of measurements corresponds to the baryonic resonance excitation with masses 2.2--2.6 GeV/c^2. The Ayy data being in good agreement with the previous results demonstrate an approximate $t$ scaling up to -1.5 (GeV/c)^2. The large values of A_y show a significant role of the spin-dependent part of the elementary amplitude of the NN->NN* reaction. The results of the experiment are compared with model predictions of the plane-wave impulse approximation. Comment: 7 pages, 7 figures. submitted to Yad.Fiz
10/2005;
-
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
Yu. T. Borzounov,
G. Filipov,
L. B. Golovanov,
A. Yu. Isupov,
A. A. Kartamyshev, V. A. Kashirin, [......],
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
A. P. Tzvinev,
N. P. Yudin,
V. N. Zhmyrov,
L. S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: An angular dependence of the tensor analyzing power of the breakup of polarized deuterons at 9 GeV/$c$ has been investigated. The measurements have been made on hydrogen and carbon targets at angles in the range from 85 to 160 mr. The data obtained are analyzed within the framework of the light-front dynamics using the deuteron wave functions for Paris and Bonn CD potentials, and the relativistic deuteron wave function by Karmanov et al. The experimental data are in rough agreement with calculations with the use of Karmanov's deuteron wave function.
12/2004;
-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
Yu. T. Borzounov,
L. B. Golovanov,
A. Yu. Isupov,
A. A. Kartamyshev, V. A. Kashirin, [......],
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
A. P. Tzvinev,
V. N. Zhmyrov,
L. S. Zolin,
G. Filipov,
N. P. Yudin
[show abstract]
[hide abstract]
ABSTRACT: The Ayy data for deuteron inclusive breakup off hydrogen and carbon at a deuteron momentum of 9.0 GeV/c and large Pt of emitted protons are presented. The large values of Ayy independent of the target mass reflect the sensitivity of the data to the deuteron spin structure. The data obtained at fixed $x$ and plotted versus Pt clearly demonstrate the dependence of the deuteron spin structure at short internucleonic distances on two variables. The data are compared with the calculations using Paris, CD-Bonn and Karmanov's deuteron wave functions.
11/2004;
-
L. S. Azhgirey,
V. V. Arkhipov,
S. V. Afanasiev,
V. K. Bondarev,
V. N. Zhmyro,
L. S. Zolin,
V. I. Ivanov,
A. Yu. Isupov,
A. A. Kartamyshev, V. A. Kashirin, [......],
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
G. Filipov,
A. N. Khrenov,
N. P. Yudin
[show abstract]
[hide abstract]
ABSTRACT: The invariant differential cross section, the tensor analyzing power A
yy
, and the vector analyzing power A
y
for the reaction 9Be(d, p)X are measured at an initial deuteron momentum of 4.5 GeV/c and a proton detection angle of about 80 mrad. The data obtained for the differential cross section are consistent with the
results of measurements at 3.5 and 5.78 GeV/c and a proton emission angle of 2.5°. The values found for the tensor analyzing power A
yy
are compared with similar data obtained previously for the deuteron-fragmentation process occurring on a carbon target at
various values of the initial deuteron momentum and leading to proton emission at zero angle. The data on the differential
cross section for the reaction 9Be(d, p)X can be satisfactorily described within the relativistic impulse approximation by using standard deuteron wave functions;
however, the approach based on this conceptual framework proves to be inadequate in dealing with data on the tensor analyzing
power. These results indicate that it is necessary either to change the method for describing the relativistic deuteron or
to take into account additional mechanisms.
Physics of Atomic Nuclei 03/2003; 66(4):690-699. · 0.57 Impact Factor
-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
G. Filipov,
A. Yu. Isupov,
V. I. Ivanov,
A. A. Kartamyshev, V. A. Kashirin, [......],
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
N. P. Yudin,
V. N. Zhmyrov,
L. S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The tensor-analyzing power A
yy
in inclusive breakup of 4.5 GeV/c deuterons on beryllium has been measured at ∼ 80 mr of the detected proton angle. The analyzing power remains positive up
to the highest measured momentum of the proton, that is in definitive contradiction with the predictions of the existing models
based on the standard deuteron wave functions. The results suggest that the deuteron structure at short distances may depend
on more than one independent variable.
Few-Body Systems 01/2002; 32(3):127-141. · 1.44 Impact Factor
-
L. S. Azhgirey,
V. V. Arkhipov,
S. V. Afanasiev,
V. K. Bondarev,
V. N. Zhmyrov,
L. S. Zolin,
V. I. Ivanov,
A. Yu. Isupov,
A. A. Kartamyshev, V. A. Kashirin, [......],
V. P. Ladygin,
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Yu. Semenov,
I. A. Semenova,
G. D. Stoletov,
G. Filipov,
A. N. Khrenov
[show abstract]
[hide abstract]
ABSTRACT: The tensor analyzing power A
yy and the vector analyzing power A
y for the inelastic scattering of 4.5-GeV/c deuterons on beryllium nuclei at angle of about 80 mrad are measured in the vicinity of baryon-resonance excitation. These
new data, presented as a function of t, comply well with the results of previous 4.5-, 5.5-, and 9-GeV/c measurements at zero angle in overlapping regions of t; all available data are described by a unified dependence on |t| upto about 0.9 (GeV/c)2. The experimental results are compared with the results of calculations performed within the multiple-scattering model and
the model involving omega-meson exchange in the t channel.
Physics of Atomic Nuclei 10/2001; 64(11):1961-1970. · 0.57 Impact Factor
-
V. P. Ladygin,
L. S. Azhgirey,
S. V. Afanasiev,
V. V. Arkhipov,
V. K. Bondarev,
Y. T. Borzounov,
G. Filipov,
L. B. Golovanov,
A. Y. Isupov,
V. I. Ivanov, [......],
N. B. Ladygina,
A. G. Litvinenko,
S. G. Reznikov,
P. A. Rukoyatkin,
A. Y. Semenov,
I. A. Semenova,
G. D. Stoletov,
A. P. Tsvinev,
V. N. Zhmyrov,
L. S. Zolin
Nuclear Physics A 02/2001; 684:423-425. · 1.54 Impact Factor
-
V.P. Ladygin,
L.S. Azhgirey,
S.V. Afanasiev,
V.V. Arkhipov,
V.K. Bondarev,
Yu.T. Borzounov,
G. Filipov,
L.B. Golovanov,
A.Yu. Isupov,
V.I. Ivanov, [......],
A.G. Litvinenko,
S.G. Reznikov,
P.A. Rukoyatkin,
A.Yu. Semenov,
I.A. Semenova,
G.D. Stoletov,
A.P. Tzvinev,
N.P. Yudin,
V.N. Zhmyrov,
L.S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The tensor analyzing power Ayy in inclusive breakup of 9.0 GeV/c deuterons on hydrogen and carbon has been measured at different emission angles of protons. The data are compared to calculations within the framework of light-front dynamics by using different deuteron wave functions. The results suggest that the relativistic deuteron structure may depend on more than one independent variable.
Physics Letters B. 629:60-67.
-
A.M. Baldin,
Kh.U. Abraamyan,
S.V. Afanasiev,
Yu.S. Anisimov,
V.V. Arkhipov,
A.S. Artyomov,
V.V. Avdeichikov,
V.K. Bondarev,
A.Yu. Isupov, V.A. Kashirin, [......],
I.A. Rufanov,
A.Yu. Semenov,
V.A. Smirnov,
P.I. Zarubin,
I. Atanasov,
V.N. Penev,
A.I. Berlev,
V.A. Krasnov,
A.I. Maevskaia,
S.V. Zadorozhny
[show abstract]
[hide abstract]
ABSTRACT: The new superconducting accelerator Nuclotron have been operated for the first time at 3.8 and 6.2 GeV/c deuteron momentum and the run on the internal target have been carried out in March'94. The various scintillation counters for ΔE-E and time-of-flight (TOF) measurements, the silicon and CsI(Tl) crystal detectors for ΔE-E measurements as well, and the lead glass EM calorimeters were used. The secondary particles γ, π, K, p, d, and t as well as He fragments produced by deuterons on the internal targets were detected and identified relaibly, thus manifestating a broad perspective of the relativistic nuclear physics research on Nuclotron in the nearest future.
Nuclear Physics A.
-
S. V. Afanasiev,
V. V. Arkhipov,
L. S. Azhgirey,
V. K. Bondarev,
E V Chernykh,
V.P. Ershov,
V V Fimushkin,
A. Yu. Isupov, V. A. Kashirin,
A. N. Khrenov, [......],
H Nakayama,
N Takabayashi,
A. Wakai,
G Filippov,
V N Penev,
T Hasegawa,
M Kawano,
T Matsuda,
E Osada,
N. P. Yudin
-
S.V. Afanasiev,
V.V. Arkhipov,
L.S. Azhgirey,
V.K. Bondarev,
E.V. Chernykh,
M. Ehara,
V.P. Ershov,
G. Filipov,
V.V. Fimushkin,
S. Fukui, [......],
I.A. Semenova,
V.I. Sharov,
G.D. Stoletov,
L.N. Strunov,
N. Takabayashi,
A. Wakai,
N.P. Yudin,
S.A. Zaporozhets,
V.N. Zhmyrov,
L.S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The tensor analyzing power Ayy in inclusive breakup of 9 GeV/c deuterons on carbon has been measured at the detected proton angle of 85 mr. The analyzing power remains positive at the highest measured momentum of the proton in definite contradiction with the predictions of the existing models. The vector analyzing power Ay has been obtained simultaneously with Ayy.
Physics Letters B.
