Adamian, F.V.
Photoproduction
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Pi0 and pi+ Production with Polarized Photons in the Resonance Region

Abrahamian, L.O. ; Avakian, R.O. ; Aganyants, Aleksandr O. ; et al.
EFI-136-75-YEREVAN, 1975.
Inspire Record 100164 DOI 10.17182/hepdata.43767

None

2 data tables match query
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).


Cross-Section Asymmetry of eta Mesons Photoproduction by Polarized Photons in the Resonance Region

Abramian, L.O. ; Avakian, R.O. ; Aganyants, Aleksandr O. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 25 (1977) 597-600, 1977.
Inspire Record 124683 DOI 10.17182/hepdata.39787

None

1 data table match query
Table 1

No description provided.


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 match query
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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CROSS-SECTION ASYMMETRY OF THE gamma n ---> pi- p REACTION BY POLARIZED PHOTONS IN THE THIRD AND FOURTH RESONANCE REGIONS

Adamian, F.V. ; Akopian, G.G. ; Galumian, P.I. ; et al.
EFI-722-37-84-YEREVAN, 1984.
Inspire Record 206944 DOI 10.17182/hepdata.18433

None

5 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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PHOTOPRODUCTION OF PI- MESONS ON NEUTRONS INDUCED BY POLARIZED PHOTONS IN THE ENERGY INTERVAL 0.9-GEV - 1.65-GEV. (IN RUSSIAN)

Abramian, L.O. ; Aganyants, Aleksandr O. ; Adamian, F.V. ; et al.
Yad.Fiz. 32 (1980) 133-140, 1980.
Inspire Record 159786 DOI 10.17182/hepdata.18933

None

6 data tables match query
Table 1

Axis error includes +- 10./10. contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

Table 2

D(SIG)/D(OMEGA)=(D(SIG(O))/D(OMEGA)+D(SIG(C))/D(OMEGA))/2, WHERE (O) AND (C) DENOTES GAMMA POLARIZATION ORTHOGONAL AND COPLANAR TO THE REACTION PLANE.

Table 3

Axis error includes +- 10./10. contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

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ASYMMETRY OF THE REACTION CROSS-SECTION FOR PI+ MESON PHOTOPRODUCTION ON HYDROGEN INDUCED BY POLARIZED PHOTONS IN THE RESONANCE ENERGY REGION. (IN RUSSIAN)

Abramian, L.O. ; Aganyants, Aleksandr O. ; Adamian, F.V. ; et al.
Yad.Fiz. 32 (1980) 128-132, 1980.
Inspire Record 159785 DOI 10.17182/hepdata.18977

None

2 data tables match query
Table 1

Axis error includes +- 10/10 contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

Table 2

Axis error includes +- 10/10 contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).


Pi0 and pi+ Production with Polarized Photons in the Energy Range 1-GeV - 2-GeV

Abrahamian, L.O. ; Avakian, R.O. ; Aganyants, Aleksandr O. ; et al.
Phys.Lett.B 48 (1974) 463-466, 1974.
Inspire Record 90760 DOI 10.17182/hepdata.43798

The asymmetry of π o and π + photoproduction from hydrogen has been measured. The π o -mesons were detected at 130° cms with E γ ranged from 0.9 to 1.65 GeV, and the π + -mesons at 40° cms with E γ ranged from 0.9 to 1.2 GeV. The results agree with model predictions of single pion photoproduction in the resonance region using fixed- t dispersion relations.

7 data tables match query
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////).

More…

Measurement of the D*+- cross-section in two photon collisions at LEP

The ALEPH collaboration Buskulic, D. ; Casper, D. ; De Bonis, I. ; et al.
Phys.Lett.B 355 (1995) 595-605, 1995.
Inspire Record 394752 DOI 10.17182/hepdata.47950

The inclusive production of D ∗± mesons in photon-photon collisions has been measured by the Aleph experiment at LEP with a beam energy of 45 GeV. The D ∗+ are detected in their decay to D 0 π + with the D 0 observed in three separate decay modes: (1) K − π + , (2) K − π + π 0 and (3) K − π + π − π + , and analagously for the D ∗− modes. A total of 33 events was observed from an integrated luminosity of 73 pb −1 which corresponds to a cross section for Σ( e + e − → e + e − D ∗± X ) of 155 ± 33 ± 21 pb. This result is compatible with both the direct production γγ → c c in the Born approximation and with a more complete calculation which includes both radiative QCD corrections and contributions in which one of the photons is first resolved into its quark and gluon constituents. The shapes of distributions for events containing a D ∗+ are found to be better described by the latter.

1 data table match query
Table 1

No description provided.