Date

Differential cross-sections for the reactions p p ---> d pi+ and p p ---> d rho+ in the energy range from 10 to 24 gev

Amaldi, U. ; Biancastelli, R. ; Bosio, C. ; et al.
Lett.Nuovo Cim. 4S2 (1972) 121-130, 1972.
Inspire Record 77558 DOI 10.17182/hepdata.37351

None

7 data tables

Axis error includes +- 10/10 contribution (COMPOUNDED WITH STATISTICAL ERROR).

Axis error includes +- 10/10 contribution (COMPOUNDED WITH STATISTICAL ERROR).

Axis error includes +- 10/10 contribution (COMPOUNDED WITH STATISTICAL ERROR).

More…

Differential cross-section and recoil proton polarization of eta-meson photoproduction at 890 mev

Hongoh, M. ; Kikuchi, K. ; Kobayakawa, H. ; et al.
Lett.Nuovo Cim. 2S2 (1971) 317-320, 1971.
Inspire Record 70913 DOI 10.17182/hepdata.37410

None

2 data tables

No description provided.

No description provided.


Charged-pi photoproduction at 180 degress in the energy range between 300 and 1200 mev

Fujii, T. ; Okuno, H. ; Orito, S. ; et al.
Phys.Rev.Lett. 26 (1971) 1672-1675, 1971.
Inspire Record 68981 DOI 10.17182/hepdata.21616

The differential cross sections at 180° for the reactions γ+p→π++n and γ+n→π−+p were measured using a magnetic spectrometer to detect π± mesons. In order to reduce the spread of energy resolution due to the nucleon motion inside the deuteron, a photon difference method was employed with a 50-MeV step for the reaction γ+n→π−+p. The data show structures at the second- and the third-resonance regions for both reactions. A simple phenomenological analysis was made for fitting the data, and the results are compared with those of previous analyses.

2 data tables

No description provided.

No description provided.


Pi- p charge exchange at backward angles

Chase, R.C. ; Coleman, E. ; Courant, H.W.J. ; et al.
Phys.Rev.D 2 (1970) 2588-2599, 1970.
Inspire Record 68333 DOI 10.17182/hepdata.24261

Results of a measurement of the π−p charge-exchange process at backward angles are presented. Differential cross sections were measured in the angular region −0.5

5 data tables

No description provided.

No description provided.

No description provided.

More…

Measurement of proton Compton scattering at 6 gev and small momentum transfers

Buschhorn, G. ; Criegee, L. ; Dubal, L. ; et al.
Phys.Lett.B 33 (1970) 241-244, 1970.
Inspire Record 63064 DOI 10.17182/hepdata.28544

Compton scattering on protons has been measured at a mean photon energy of 6 GeV and four-momentum transfers − t between 0.06 and 0.60 (GeV/ c ) 2 . The differential cross section shows a diffraction-like behaviour. The cross section extrapolated to t =0 is in fair agreement with the optical point. Discrepancies with the vector meson dominance model are pointed out.

1 data table

No description provided.


On the separation of single and double scattering in proton-deuteron collisions at 19.2 gev/c

Allaby, J.V. ; Diddens, A.N. ; Glauber, R.J. ; et al.
Phys.Lett.B 30 (1969) 549-554, 1969.
Inspire Record 63236 DOI 10.17182/hepdata.28891

Experimental data exhibiting the separation of single and double quasi-elastic scattering in proton-deuteron collisions at 19.2 GeV/ c and for momentum transfers around 1 GeV/ c are presented. An analysis of the scattering cross section in terms of the multiple scattering theory is given. The possibilities for the deduction of proton-neutron differential cross sections particularly at large momentum transfers are pointed out.

1 data table

No description provided.


Photoproduction of positive pions at backward angles in the energy range 1-3 gev

Alvarez, R.A. ; Cooperstein, G. ; Kalata, K. ; et al.
Phys.Rev.D 1 (1970) 1946-1960, 1970.
Inspire Record 61718 DOI 10.17182/hepdata.25170

The cross section for photoproduction of single π+ from hydrogen has been measured at laboratory angles of 110°, 127.5° and 152°, between 0.9- and 3.2-GeV incident photon energy. Measurements have been made with approximately 15% statistical accuracy at about 40 photon energies at each angle. The results agree well with the previous Caltech data of Thiessen. The cross section shows a rapid drop with increasing energy with superimposed bumps or shoulders corresponding to the N(1688), Δ(1920), and Δ(2420). A shallow minimum is observed at the N(2190) resonance.

1 data table

No description provided.


Photoproduction of neutral pions from neutrons between 500 and 900 mev

Hemmi, Y. ; Inagaki, T. ; Kikuchi, R. ; et al.
Phys.Lett.B 32 (1970) 137-140, 1970.
Inspire Record 63812 DOI 10.17182/hepdata.28720

The differential cross sections for the γ + n → π O + n reaction have been measured at the photon energies of 500–900 MeV. The ratios, R oo = [ d δ d Ω(γ n → π o n ) ] [ d δ d Ω(γ p → π o p ) ] , have been obtained at the c.m. pion angles of 60 O , 90 O , 105 O , 120 O , and 140 O .

22 data tables

Axis error includes +- 0.0/0.0 contribution (8 TO 11////).

Axis error includes +- 0.0/0.0 contribution (8 TO 11////).

Axis error includes +- 0.0/0.0 contribution (8 TO 11////).

More…

Charge exchange and production of eta mesons and multiple neutral pions in pi- p reactions between 654 and 1247 mev/c

Bulos, F. ; Lanou, R.E. ; Piper, A.E. ; et al.
Phys.Rev. 187 (1969) 1827-1844, 1969.
Inspire Record 62084 DOI 10.17182/hepdata.5293

An experiment designed to study the π−p total neutral cross section and its breakdown into several channels has been performed at eleven incident pion momenta ranging from 654 to 1247 MeV/c. Angular distributions for the charge exchange π0 and for η0 production are given in terms of Legendre-polynomial expansion coefficients. Forward and backward differential cross sections are presented for the charge-exchange channel and comparisons with recent dispersion-relation predictions for the forward cross section are made.

34 data tables

No description provided.

No description provided.

No description provided.

More…

Photoproduction of k+ mesons and polarization of lambda0 hyperons in the 1-gev range

Fujii, T. ; Imanishi, A. ; Iwata, S. ; et al.
Phys.Rev.D 2 (1970) 439-448, 1970.
Inspire Record 61523 DOI 10.17182/hepdata.24271

Polarization of Λ hyperons and differential cross sections for the reaction γ+p→K++Λ were measured at the K+-meson center-of-mass angles around 45°, 70°, and 90° for the incident photon energies of 1054, 1100, and 1160 MeV. The K+ mesons were detected with a magnetic spectrometer and a velocity-selection system based on the energy loss and the time of flight. The polarization of Λ was determined by measuring the up-down asymmetry of protons in the decay Λ→pπ− with respect to the production plane. The results show a dominant sinθK* dependence of the polarization at the region of the third resonance and are consistent with a contribution of the P11 resonance with a mass of about 1700 MeV.

3 data tables

No description provided.

No description provided.

No description provided.