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Small Angle Elastic electron - Deuteron Scattering

Akimov, Yu.K. ; Andert, K. ; Arvanov, A.N. ; et al.
EFI-98-74, 1974.
Inspire Record 91477 DOI 10.17182/hepdata.18429

None

1 data table
Table 1

X ERROR D(EKIN) = 0.0600 MEV.


Total Cross-Sections of $\pi^{\pm}$ and $K^{\pm}$ on Protons and Deuterons Between 50-GeV/c and 200-GeV/c

Carroll, A.S. ; Chiang, I.-H. ; Kycia, T.F. ; et al.
Phys.Rev.Lett. 33 (1974) 932, 1974.
Inspire Record 90204 DOI 10.17182/hepdata.21226

Total cross sections of π± and K± on protons and deuterons have been measured at 50, 100, 150, and 200 GeV/c. All of the cross sections rise with increasing momentum.

2 data tables
Table 1

No description provided.

Table 2

PARTICLE-ANTIPARTICLE CROSS SECTION DIFFERENCES - SOME COMMON ERRORS CANCEL.


Total Cross-Sections of p and anti-p on Protons and Deuterons Between 50-GeV/c and 200-GeV/c

Carroll, A.S. ; Chiang, I.-H. ; Kycia, T.F. ; et al.
Phys.Rev.Lett. 33 (1974) 928, 1974.
Inspire Record 90202 DOI 10.17182/hepdata.21291

Proton and antiproton total cross sections on protons and deuterons have been measured at 50, 100, 150, and 200 GeV/c. The proton cross sections rise with increasing momentum. Antiproton cross sections fall with increasing momentum, but the rate of fall decreases between 50 and 150 GeV/c, and from 150 to 200 GeV/c there is little change in cross section.

2 data tables
Table 1

No description provided.

Table 2

ANTIPARTICLE-PARTICLE CROSS SECTION DIFFERENCES.


A Study of the Reactions anti-K0 p ---> Lambda pi+ and anti-K0 p ---> Sigma0 pi+ from 1-GeV/c to 12-GeV/c

Yamartino, R. ; Brandenburg, G.W. ; Johnson, William B. ; et al.
Phys.Rev.D 10 (1974) 9, 1974.
Inspire Record 91647 DOI 10.17182/hepdata.24927

Cross sections, differential cross sections, and hyperon polarization results are presented for the reactions K¯0p→Λπ+ and K¯0p→Σ0π+ in the momentum interval 1 to 12 GeV/c. Emphasis is placed on the comparison of Λ and Σ channels, and on the momentum dependences of the data. In particular, the Λ polarization data are consistent with being independent of energy above 2 GeV/c; and the slopes of the forward cross sections are found to increase toward the slope values for the line-reversed reactions πp→K(Λ,Σ) as energy increases.

27 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

RESONANCE REGION CROSS SECTIONS.

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Production of pi0 Mesons in K+ p Interactions at 8.2-GeV/c

Bartke, J. ; Eskreys, A. ; Figiel, J. ; et al.
Acta Phys.Polon.B 5 (1974) 689, 1974.
Inspire Record 90280 DOI 10.17182/hepdata.51679

Experimental results on $\pi^0$ production in $K^+$p interactions at 8.2 GeV/$c$ incident momentum are presented. Average $\pi^0$ multiplicities for given prong numbers are evaluated. They are consistent both with the corresponding results for pp interactions at 12 GeV/$c$ chosen for comparison because they have the same average prong number) and with a model where total multiplicity distributions are calculated from the Czyżewski--Rybicki formula and the charge branching ratios from the statistical model. Some averages over the $\pi^0$ momentum distribution are also evaluated. In particular it is found that $\pi^0$-s produced in two prong interactions go predominantly forward.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


pi0 and rho0 Photoproduction from 6-GeV to 18-GeV

Barish, B. ; Gomez, R. ; Kreinick, D. ; et al.
Phys.Rev.D 9 (1974) 566, 1974.
Inspire Record 94529 DOI 10.17182/hepdata.21952

Differential cross sections for π0 and ρ0 photoproduction from protons have been measured at photon energies 6, 12, and 18 GeV and momentum transfers 0.5 to 3 (GeVc)2.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Electron-Positron Elastic Scattering at 5-GeV Center-Of-Mass Energy

Newman, H. ; Averill, R. ; Eshelman, J. ; et al.
Phys.Rev.Lett. 32 (1974) 483, 1974.
Inspire Record 744 DOI 10.17182/hepdata.21306

We have measured the cross section, the distribution of scattering angles, and the distribution of noncoplanarity angles for electron-positron elastic scattering at 5 GeV c. m. energy. An analysis based on 230 events with scattering angles between 50 and 130° yields a ratio of the experimental to theoretical quantum-electrodynamic cross section of 1.03 ± 0.09. The scattering-angle and noncoplanarity-angle distributions are also found to be in excellent agreement with the quantum-electrodynamic predictions.

1 data table
Table 1

No description provided.


Observation of an A3 Amplitude Phase Change

Thompson, G. ; Badewitz, R.C. ; Gaidos, J.A. ; et al.
Phys.Rev.Lett. 32 (1974) 331, 1974.
Inspire Record 772 DOI 10.17182/hepdata.21334

A spin and parity decomposition is presented of the (π+π+π−) final state formed opposite a proton by incident 13-GeV/c π+ mesons. The A3 enhancement is identified as the 2− amplitude decaying to f0π+ via an S wave. A change in relative phase is noted between the 2−S amplitude and the other principal contributions; this is not incompatible with analyses of the (3π)− system. The method employs the University of Illinois three-body partialwave analysis program.

1 data table
Table 1

A3+ DEFINED AS JP=2- S-WAVE.


Partial Wave Analysis of the (pi+ pi+ pi-) System Through the Region of the A3 Meson

Thompson, G. ; Badewitz, R.C. ; Gaidos, J.A. ; et al.
Nucl.Phys.B 69 (1974) 381-398, 1974.
Inspire Record 760 DOI 10.17182/hepdata.32348

A recent spin-parity analysis of the π + π + π − system formed opposite a proton and a coherent deuteron by incident 13 GeV/ c 2 π + mesons, is extended to a three-pion mass of 1.9 GeV/ c . Relative proportions of the contributing partial waves are presented, from threshold, and the A 3 region is discussed in detail. Contrary to results with the (3 π ) − system, a change in phase is noted for the 2 − amplitude decaying to f 0 π + via am S-wave.

7 data tables
Table 1

FOR A3+ DEFINED AS 2+ S-WAVE WITH 1.5 < M(3PI) < 1.8 GEV).

Table 2

CONSTRAINT IMPLIES RHO(11) + RHO(1-1) = 0.

Table 3

CONSTRAINT IMPLIES RHO(11) + RHO(1-1) = 0.

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rivet Analysis
Hadron Production by electron-Positron Annihilation at 5-GeV Center-Of-Mass Energy

Tarnopolsky, G. ; Eshelman, J. ; Law, M.E. ; et al.
Phys.Rev.Lett. 32 (1974) 432-435, 1974.
Inspire Record 745 DOI 10.17182/hepdata.21302

We have measured the cross section σ for electron - positron annihilation into three or more hadrons, with at least two charged particles in the final state, at 5 GeV center-of-mass energy. We find a model-independent lower limit of σ>9.1±1.0nb; assuming invariant phase-space production of pions, we calculate the detection efficiency of our detector to be (45 ± 11)%, yielding a cross section σ=21±5nb. The average charged hadron multiplicity is found to be n¯=4.3±0.6.

1 data table
Table 1

No description provided.