Derevshchikov, A
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MEASUREMENT OF POLARIZATION IN THE pi- p ---> pi0, n, pi0 ---> 2 gamma REACTION AT 40-GeV/c WITH THE REGISTRATION OF ALL REACTION PRODUCTS

Borisov, N.S. ; Kazarinov, Yu.M. ; Liburg, M.Yu. ; et al.
JINR-P1-84-311, 1984.
Inspire Record 203007 DOI 10.17182/hepdata.9904

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


pi- Meson Elastic Scattering on Proton in the Coulomb-Nuclear Interference Region for Momentum Range from 33-GeV/c Up to 60-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.
Sov.J.Nucl.Phys. 24 (1976) 49, 1976.
Inspire Record 99591 DOI 10.17182/hepdata.35863

None

10 data tables
Table 1

No description provided.

Table 2

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Table 3

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Polarization in the Reaction $\pi^-$ Polarized $p \to \pi^0 n$ at 40-{GeV}/$c$

Avvakumov, I.A. ; Apokin, V.D. ; Bagaturiya, Yu.Sh. ; et al.
Nucl.Phys.B 255 (1985) 253-272, 1985.
Inspire Record 206940 DOI 10.17182/hepdata.33791

The paper presents results on measuring the polarization in the reaction π − p→ π 0 n at 40 GeV/ c in the 4-momentum transfer range 0<| t |⩽2 (GeV/ c ) 2 . The results based on the statistics of about 2.2 million recorded events made it possible to observe a noticeable value and complex structure in the polarization behaviour up to | t |⩽2 (GeV/ c ) 2 .

2 data tables

ON INVESTIGATING ENERGY DEPENDENCE OF CROSS-SECTION FOR pi- MESON ELASTIC SCATTERING ON PROTONS IN THE INTERVAL 33-GeV/c TO 55-GeV/c

Derevshchikov, A.A. ; Matulenko, Yu.A. ; Meshchanin, A.P. ; et al.
Nucl.Phys.B 80 (1974) 442-460, 1974.
Inspire Record 80729 DOI 10.17182/hepdata.32174

The π − p differential elastic scattering cross sections have been measured for eight momenta in the 33–55 GeV/ c range. The energy dependence of the slope and of the total elastic scattering cross sections has been determined experimentally. The results are compared with the known data. The experimental data are compared both with the Regge pole model and with the quasi-potential one.

9 data tables
Table 1

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Table 2

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Small-Angle pi- p Elastic Scattering Measurements

Apokin, V.D. ; Derevshchikov, A.A. ; Matulenko, Yu.A. ; et al.
Phys.Lett.B 56 (1975) 391-394, 1975.
Inspire Record 90800 DOI 10.17182/hepdata.27866

We have measured small angle elastic pion-proton scattering in 40 and 50 GeV c π − beams at Serpukhov. Analysis of the data in the Coulomb interference region yields a value for the ratio of the real to the imaginary part of the strong amplitude, ϱ (0)=−0.074 ± 0.033 at 40 GeV/ c and ϱ (0)=−0.006 ±0.026 at 50 GeV/ c

2 data tables
Table 1

STATISTICAL ERRORS ONLY.

Table 2

STATISTICAL ERRORS ONLY.


Polarization in Charge Exchange Reaction $\pi^- p \to \pi^0 n$ at 40-{GeV}/$c$ for the Four Momentum Transfer Range $0 < T < 2$-{GeV}/$c^2$

Apokin, V.D. ; Avvakumov, I.A. ; Bagaturiya, Yu.Sh. ; et al.
Z.Phys.C 15 (1982) 293, 1982.
Inspire Record 169455 DOI 10.17182/hepdata.41256

The results on measuring polarization in charge exchange reaction π−+p→π0+n at 40 GeV/c are presented for the 4-momentum transfer range from 0 up to 2 (GeV/c)2. At |t|≦0.4 (GeV/c)2 the polarization has a positive sign. In the “crossover” region of π± elastic scattering a possible minimum in the polarization behaviour has been seen for the first time. the polarization is zero within the statistical accuracy near this point. In the “deep” region of the charge-exchange differential cross-section the polarization has a negative sign. The presented data are not in agreement with the modern theoretical models.

1 data table

CROSS-SECTION OF pi- MESON CHARGED EXCHANGE REACTION ON NUCLEI AT 40-GeV/c MOMENTUM

Apokin, V.D. ; Vasiliev, A.N. ; Vishnevsky, N.K. ; et al.
Sov.J.Nucl.Phys. 35 (1982) 219, 1982.
Inspire Record 165494 DOI 10.17182/hepdata.41301

None

4 data tables
Table 1

No description provided.

Table 2

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Table 3

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Polarization in Charge Exchange Reaction $\pi^- p \to \pi^0 n$ in Small Momentum Transfer Range at 40-{GeV}/$c$

Apokin, V.D. ; Avvakumov, I.A. ; Bagaturiya, Yu.Sh. ; et al.
Experientia Suppl. 38 (1981) 554, 1981.
Inspire Record 154047 DOI 10.17182/hepdata.11048

None

2 data tables
Table 1

AVERAGE TARGET POLARIZATION WAS 76 +- 3 PCT.

Table 2

No description provided.


Elastic pi+ p, K+ p and p p Scattering in the Region of Coulomb-Nuclear Interference at Momenta 42.5-GeV/c and 52.2-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.
Yad.Fiz. 25 (1977) 94-102, 1977.
Inspire Record 108613 DOI 10.17182/hepdata.19035

None

18 data tables
Table 1

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Production of Nucleon Resonances by Single Diffraction Dissociation at the CERN ISR

Webb, R. ; Trilling, G. ; Telegdi, V. ; et al.
Phys.Lett.B 55 (1975) 331-335, 1975.
Inspire Record 91189 DOI 10.17182/hepdata.27915

The single diffraction dissociation process pp → (p π + π − )p has been studied at the CERN ISR at √ s = 45 GeV and 0.1 < − t < 0.6 GeV 2 . The reaction is dominated by nucleon resonance production: pp → pN (1520) and pp → pN(1688) with cross-sections (0.25 ± 0.08) mb and (0.56 ± 0.19) mb respectively.

2 data tables
Table 1

DIFFERENTIAL CROSS SECTIONS FOR THREE RANGES OF <P PI+ PI-> MASS.

Table 2

FROM BREIT-WIGNER PLUS BACKGROUND FITS. CORRECTIONS FOR OTHER DECAY MODES USE THE PDG 1974 TABLES FOR N(1520) AND N(1688).


Study of pi- Meson Elastic Scattering by Protons at Small Angles

Apokin, V.D. ; Derevshchikov, A.A ; Matulenko, Yu.A. ; et al.
Yad.Fiz. 21 (1975) 1240-1246, 1975.
Inspire Record 103333 DOI 10.17182/hepdata.19099

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

IM(AMP) VIA OPTICAL THEOREM FROM TOTAL CROSS SECTIONS OF L. M. VASILYEV ET AL., PL 36B, 528 (1971).


Observation of significant spin effects in hard collisions at 40-GeV/c

Apokin, V.D. ; Arestov, Yu.I. ; Astafev, O.V. ; et al.
Phys.Lett.B 243 (1990) 461-464, 1990.
Inspire Record 303587 DOI 10.17182/hepdata.29694

A single-spin asymmetry in the inclusive π 0 production at small x F was measured. In the experiment 40 GeV/c π − mesons were incident on transversely polarized protons and deutrons. An asymmetry of (40–50)% has been revealed in the hard scattering region.

1 data table
Table 1

No description provided.


OBSERVATION OF THE ASYMMETRY IN THE REACTION pi- p (polarized) ---> (pi0 pi0) n

Apokin, V.D. ; Belikov, N.I. ; Derevshchikov, A.A. ; et al.
Sov.J.Nucl.Phys. 47 (1988) 465, 1988.
Inspire Record 246899 DOI 10.17182/hepdata.40790

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


pi- p ---> f2 (1270) n REACTION IN THE REGION t < 2.0-GeV/c**2 AT 40-GeV/c

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.
Sov.J.Nucl.Phys. 47 (1988) 1041, 1988.
Inspire Record 239548 DOI 10.17182/hepdata.40792

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Polarization Parameters in the Reactions $\pi^- p$ (Polarized) $\to \eta n$ and $\pi^- p$ (Polarized) $\to \eta^\prime n$ at 40-{GeV}/$c$

Apokin, V.D. ; Arestov, Yu.I. ; Avvakumov, I.A. ; et al.
Z.Phys.C 35 (1987) 173, 1987.
Inspire Record 222760 DOI 10.17182/hepdata.40802

The polarization parameter in the reactions π−p→ηn and π−p→η′n at 40 GeV/c with −t ranging from 0 to 2.6 (GeV/c)2 and 1.0 (GeV/c)2, respectively, was measured in experiments using a propanediol polarized target. Only gamma particles from the neutral meson decay were detected. The polarization parameter of the first reaction turns out to be negative in a widet interval (0.05<−t<1.6 (GeV/c)2) and probably changes its sign at larger values oft. The average value of the polarization parameter of the second reaction is equal to −17±8)% in the region 0.05<−t<0.5 (GeV/c)2.

3 data tables


Quasielastic Charge Exchange of Negative Pions on Carbon Into $\pi^0$, $\eta$, $\eta^\prime$ (958), $\omega(783)$ and F2 (1270) Mesons at 39.1-{GeV}/$c$

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.
Sov.J.Nucl.Phys. 46 (1987) 644, 1987.
Inspire Record 239549 DOI 10.17182/hepdata.40865

None

7 data tables
Table 1

No description provided.

Table 2

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Table 3

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POLARIZATION ASYMMETRY OSCILLATIONS IN REACTION pi- p ---> p0 n AT t <= 3-GeV/c**2

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.
Sov.J.Nucl.Phys. 45 (1987) 840, 1987.
Inspire Record 234598 DOI 10.17182/hepdata.40905

None

1 data table
Table 1

No description provided.


Elastic Scattering of pi+- p, K+- p, p p and anti-p p at 40-GeV/c

Kazarinov, Yu.M. ; Kazarinov, M.Yu. ; Khachaturov, B. ; et al.
Nucl.Phys.B 124 (1977) 391-408, 1977.
Inspire Record 110709 DOI 10.17182/hepdata.35427

The differential cross sections for elastic π − p, K − p , p p and π + p, pp scattering at 39 and 44.5 GeV/ c , respectively, have been measured in the interval of momentum transfer squared 0.15 ≤ ovbt | ≤ 2 (GeV/ c ) 2 .

6 data tables
Table 1

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Table 3

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On Measuring the Spin Rotation Parameter in Elastic p p and pi+ p Scattering at 45-GeV/c

Bruneton, C. ; Bystricky, J. ; Gaidot, A. ; et al.
Yad.Fiz. 24 (1976) 762-765, 1976.
Inspire Record 108609 DOI 10.17182/hepdata.19050

None

1 data table
Table 1

No description provided.


Polarization in Elastic Scattering of pi+, K+ Mesons and Protons on Protons at 45-GeV/c

The Serpukhov-Saclay-Dubna-Moscow collaboration Bruneton, C. ; Bystricky, J. ; Gaidot, A. ; et al.
Sov.J.Nucl.Phys. 25 (1977) 198, 1977.
Inspire Record 108993 DOI 10.17182/hepdata.19052
1 data table
Table 1

No description provided.


Analyzing Power Measurements of Coulomb Nuclear Interference With the Polarized Proton and Anti-proton Beams at 185 GeV/c

The E581/704 collaboration Akchurin, N. ; Carey, David C. ; Coleman, R. ; et al.
Phys.Lett.B 229 (1989) 299-303, 1989.
Inspire Record 280476 DOI 10.17182/hepdata.29782

The analyzing power A N of proton-proton, proton-hydrocarbon, and antiproton-hydrocarbon, scattering in the Coulomb-nuclear interference region has been measured using thhe 185 GeV/ c Fermilab polarized-proton and -antiproton beams. The results are found to be consistent with theoretical predictions within statistical uncertainties.

3 data tables
Table 1

No description provided.

Table 2

Data from hydrocarbon target.

Table 3

Data from hydrocarbon target.


Analyzing Power Measurement in Inclusive $\pi^0$ Production at High $\chi_F$

Bonner, B.E. ; Buchanan, J.A. ; Carey, D.C. ; et al.
Phys.Rev.Lett. 61 (1988) 1918, 1988.
Inspire Record 269386 DOI 10.17182/hepdata.2928

The analyzing power AN in inclusive π0 production has been measured with use of the new 185-GeV/c Fermilab polarized proton beam. We obtain the value AN=0.10±0.03 for π0's in the kinematic region 0.2<xF<0.8 and 0.3<pT<1.2 GeV/c. In certain models of particle production this suggests that the spin of the proton is carried by its valence quarks.

7 data tables
Table 1

No description provided.

Table 2

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Table 3

Individual polarisation measurements.

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Analyzing power measurement of p p elastic scattering in the Coulomb - nuclear interference region with the 200-GeV/c polarized proton beam at Fermilab

The E581/704 collaboration Akchurin, N. ; Langland, J. ; Onel, Y. ; et al.
Phys.Rev.D 48 (1993) 3026-3036, 1993.
Inspire Record 364576 DOI 10.17182/hepdata.22670

The analyzing power AN of proton-proton elastic scattering in the Coulomb-nuclear interference region has been measured using the 200-GeV/c Fermilab polarized proton beam. A theoretically predicted interference between the hadronic non-spin-flip amplitude and the electromagnetic spin-flip amplitude is shown for the first time to be present at high energies in the region of 1.5 × 10−3 to 5.0 × 10−2 (GeV/c)2 four-momentum transfer squared, and our results are analyzed in connection with theoretical calculations. In addition, the role of possible contributions of the hadronic spin-flip amplitude is discussed.

1 data table
Table 1

No description provided.


Measurement of the Analyzing Power in the Primakoff Process With a High-energy Polarized Proton Beam

The FERMILAB E-704 collaboration Carey, David C. ; Coleman, R.N. ; Corcoran, M.D. ; et al.
Phys.Rev.Lett. 64 (1990) 357, 1990.
Inspire Record 282042 DOI 10.17182/hepdata.19957

The analyzing power (spin-dependent azimuthal asymmetry) has been observed for the first time in the nuclear Coulomb coherent production process, the ‘‘Primakoff process,’’ with the use of the newly constructed 185-GeV/c Fermilab polarized proton beam. We have observed a large asymmetry of this process in the regions of ‖t’‖<0.001 (GeV/c)2 and 1.36<M(π0p)<1.52 GeV/c2, where the Coulomb process is predominant. The measured asymmetry is consistent with the analyzing power of the existing low-energy γ+p→π0+p data.

2 data tables
Table 1

No description provided.

Table 2

No description provided.