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HIGH-ENERGY PHOTOMESON PRODUCTION FROM HYDROGEN VIA THE 'u CHANNEL'

Anderson, Robert L. ; Gustavson, D. ; Johnson, J.R. ; et al.
Phys.Rev.Lett. 21 (1968) 479-481, 1968.
Inspire Record 52639 DOI 10.17182/hepdata.21700

We have investigated the photoproduction process γ+p→π++n over a wide range of energies and u values at the Stanford Linear Accelerator Center (SLAC) accelerator. We also have investigated γ+p→π−+N*++ at one value of u and γ+p→K++Λ0, Σ0 at one u value and three energies. Our results for dσdu for the photoproduction of π+ mesons from hydrogen are roughly α2π of the corresponding cross sections for the elastic scattering of π− mesons from hydrogen. The u dependence of our cross sections is not dominated by nucleon exchange as it is in the case of π+p elastic scattering.

0 data tables match query

Differential Cross Sections in Eta Photoproduction from 0.8 to 1.45 GeV

Bloom, E.D. ; Heusch, C.A. ; Prescott, C.Y. ; et al.
Phys.Rev.Lett. 21 (1968) 1100-1103, 1968.
Inspire Record 54471 DOI 10.17182/hepdata.21721

The cross section for the process γp→pη was studied from 0.8- to 1.45-GeV incident photon energy at center-of-mass angles from 50 to 90°. The data cover a range of energies well beyond previous measurements. The results will aid in the study of I=12 nucleon isobars.

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


SINGLE pi+- AND K+ PHOTOPRODUCTION FROM COMPLEX NUCLEI AT 8-GeV AND 16-GeV

Boyarski, A. ; Diebold, Robert E. ; Ecklund, Stanley D. ; et al.
Phys.Rev.Lett. 23 (1969) 1343-1346, 1969.
Inspire Record 54879 DOI 10.17182/hepdata.21641

The reactions γA→π±A* have been studied at four-momentum transfers −t<~0.5 GeV2 for seven elements ranging from hydrogen to lead. Exclusion-principle suppression is clearly visible at small-momentum transfer. Neither the A dependence nor the energy dependence of the cross sections agrees with the predictions of the vector-dominance model. The ratio of π−π+ production requires equal spatial distributions for the protons and neutrons in nuclei. Some K+ data are also presented.

1 data table match query
Table 15

No description provided.


Angular Distribution for Eta-Meson Photoproduction from Hydrogen at 775-850 MeV

Bacci, C. ; Baldini-Celio, R. ; Mencuccini, C. ; et al.
Phys.Rev.Lett. 20 (1968) 571-574, 1968.
Inspire Record 944916 DOI 10.17182/hepdata.21723

None

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Eta Photoproduction in the Region from Threshold to 940 MeV

Prepost, R. ; Lundquist, D. ; Quinn, D. ;
Phys.Rev.Lett. 18 (1967) 82-86, 1967.
Inspire Record 52317 DOI 10.17182/hepdata.21768

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 (?////).


Some Recent Measurements of Proton Form Factors

Albrecht, W. ; Behrend, H.-J. ; Dorner, H. ; et al.
Phys.Rev.Lett. 18 (1967) 1014-1015, 1967.
Inspire Record 52298 DOI 10.17182/hepdata.21769

None

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Elastic scattering of negative pions from deuterons at 2.01, 3.77, and 5.53 gev/c

Fellinger, M. ; Gutman, E. ; Lamb, R.C. ; et al.
Phys.Rev.Lett. 22 (1969) 1265-1269, 1969.
Inspire Record 56484 DOI 10.17182/hepdata.21699

The differential cross sections for the elastic scattering of negative pions by deuterons have been measured for 2.01-, 3.77-, and 5.53-GeV/c incident pion momenta, over an interval of the squared four-momentum transfer from -0.25 (GeV/c)2 to ∼-1.0 (GeV/c)2. The results are consistent with calculations based on a Glauber model of the scattering process.

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Photoproduction Cross Sections for pi+ and K+ Mesons at 3.4 TO 4.0 GeV and Their Comparison with SU (3)

Elings, V.B. ; Cohen, K.J. ; Garelick, D.A. ; et al.
Phys.Rev.Lett. 16 (1966) 474-477, 1966.
Inspire Record 50878 DOI 10.17182/hepdata.21779

None

2 data tables match query
Table 2

No description provided.

Table 3

No description provided.


Photoproduction of the Eta Particle at 800-1000 MeV. A Comparison Between the piN and the etaN Systems

Bacci, C. ; Penso, G. ; Salvini, G. ; et al.
Phys.Rev.Lett. 16 (1966) 157-161, 1966.
Inspire Record 944921 DOI 10.17182/hepdata.21793

None

1 data table match query
Table 1

No description provided.


Photoproduction of Single Positive Pions Between 1.2 and 3 GeV

Buschhorn, G. ; Carroll, J. ; Eandi, R.D. ; et al.
Phys.Rev.Lett. 17 (1966) 1027-1030, 1966.
Inspire Record 50803 DOI 10.17182/hepdata.21795

Differential cross sections for the reaction γ+p→n+π+ are presented for incident photon energies between 1.2 and 3 GeV and pion center-of-mass production angles of 15 to 50 deg.

0 data tables match query