Vartapetian, G.A.
GAMMA P --> P PI0
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Measurement of the cross section asymmetry of the reaction gamma p --> pi0 p in the resonance energy region E(gamma) = 0.5-GeV - 1.1-GeV.

Adamian, F.V. ; Bunyatyan, A.Yu. ; Frangulian, G.S. ; et al.
Phys.Rev.C 63 (2001) 054606, 2001.
Inspire Record 536542 DOI 10.17182/hepdata.31424

The cross section asymmetry Sigma has been measured for the photoproduction of pi0-mesons off protons, using polarized photons in the energy range Eg = 0.5 - 1.1 GeV. The CM angular coverage is Theta = 85 - 125 deg with energy and angle steps of 25 MeV and 5 deg, respectively. The obtained Sigma data, which cover the second and third resonance regions, are compared with existing experimental data and recent phenomenological analyses. The influence of these measurements on such analyses is also considered.

9 data tables
Table 1

Axis error includes +- 3/3 contribution (Due to accuracy of the linear polarization calculations).

Table 2

Axis error includes +- 3/3 contribution (Due to accuracy of the linear polarization calculations).

Table 3

Axis error includes +- 3/3 contribution (Due to accuracy of the linear polarization calculations).

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POLARIZATION PARAMETERS SIGMA, T, AND P FOR THE REACTION GAMMA P ---> P PI0 IN THE ENERGY INTERVAL 0.9-GEV - 1.5-GEV AT THETA (PI0) center-of-mass = 120-DEGREES

Asaturian, M.M. ; Belyaev, A.A. ; Vartapetian, G.A. ; et al.
JETP Lett. 44 (1986) 341-344, 1986.
Inspire Record 240634 DOI 10.17182/hepdata.16911

None

1 data table
Table 1

No description provided.


MEASUREMENT OF THE ASYMMETRY OF THE REACTION gamma p ---> p pi0 CROSS-SECTION FOR PION PRODUCTION ANGLES IN CMS 65-degrees TO 80-degrees IN THE RESONANCE ENERGY RANGE

Avakian, R.O. ; Bagdasaryan, A.S. ; Vartapetian, G.A. ; et al.
Sov. J. Contemp. Phys. 19 ( 1984) No. 1 46-48. ( Izv. Akad. Nauk Arm. SSR 19 ( 1984) No. 1 50-53) and Erevan Phys. Inst. - EFI-674(64)-83 (83,REC.JAN.84) 13p, 1983.
Inspire Record 195991 DOI 10.17182/hepdata.18465

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


MEASUREMENT OF ASYMMETRY IN CROSS-SECTION OF GAMMA P ---> P PI0 REACTION IN THE RESONANCE REGION. (IN RUSSIAN)

Avakian, R.O. ; Avetisian, A.E. ; Bagdasaryan, A.S. ; et al.
Yad.Fiz. 38 (1983) 1196-1198, 1983.
Inspire Record 200187 DOI 10.17182/hepdata.17731

None

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (?////DUE TO ERRORS IN PHOTON POLARIZATION).


MEASUREMENT OF POLARIZATION OF RECOIL PROTONS IN PI0 PHOTOPRODUCTION FOR THETA* (PI0) = 60-degrees IN RESONANCE REGION. (IN RUSSIAN)

Avakian, R.O. ; Avakian, E.O. ; Avetisian, A.E. ; et al.
Sov.J.Nucl.Phys. 37 (1983) 199-201, 1983.
Inspire Record 183972 DOI 10.17182/hepdata.17739

None

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (?////NO DISCUSSION OF ERRORS AT ALL).


MEASUREMENT OF POLARIZATION OF PROTONS IN THE REACTION GAMMA P ---> P PI0 IN A PHOTON LINEARLY POLARIZED BEAM. (IN RUSSIAN)

Avakian, R.O. ; Avakian, E.O. ; Avetisian, A.E. ; et al.
Yad.Fiz. 36 (1982) 393-399, 1982.
Inspire Record 183654 DOI 10.17182/hepdata.17730

None

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (?////ERROR IN POLARIZATION OF INITIAL GAMMAS IS NOT GIVEN).