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Electroproduction of $\pi^+ n$, $\pi^- p$ and $K^+ \Lambda$, $K^+ \Sigma^0$ Final States Above the Resonance Region

Brauel, P. ; Canzler, T. ; Cords, D. ; et al.

Z.Phys.C 3 (1979) 101, 1979.

Inspire Record 142872 DOI 10.17182/hepdata.15909

The reactionsΣvp→π+n,K+Λ,K+∑0 andΣvn→π+n were studied at invariant hadronic masses around 2.2. GeV forQ2=0.06, 0.28, 0.70, and 1.35 GeV2. The main results are: At small |t| the π+ production is dominated by longitudinally polarized photons and can be described by one pion exchange. At low |t| the transverse (π+n) cross section drops steeply withQ2, but remains roughly constant forQ2≧0.5 GeV2. For |t⊢≧0.8 GeV2, (π+n/dt) is almost independent ofQ2. The integrated cross section (π+n) shows a similarQ2-dependence asσtot (γvp) forQ2≧0.28 GeV2. The ratioσ(π-p)/σ(π+n) atQ2=0.70 and 1.35 GeV2 for |t|≧0.6 GeV2 is smaller than in photoproduction and close to 1/4. The ratioσ(K+∑0 decreases steeply withQ2 following roughly the predictions of the quark-parton model.

28 data tables

Table 1

PHI AND EPSILON DEPENDENCE FITTED TO GIVE COMPONENTS OF CROSS SECTION.

Table 2

No description provided.

Table 3

No description provided.

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Pi- Electroproduction Off Deuterium Above the Resonance Region

Brauel, P. ; Canzler, T. ; Cords, D. ; et al.

Phys.Lett.B 65 (1976) 184-186, 1976.

Inspire Record 114029 DOI 10.17182/hepdata.27606

The reactions e + d → e ' + p S + p + π − and e + d → e ' + n S + n + π + were measured detecting electron and pion in coincidence at an invariant hadronic mass of 2.19 GeV. The measurements were performed at electron four-momentum transfer squared of f 2 = 0.70 and 1.35 GeV 2 in the range of t = ( γ v − π ) 2 between t min and −1.0 GeV 2 . The cross section d 2 σ / dtdφ of the reaction e + n → e' + p + π − was determined.

3 data tables

Table 1

ACTUALLY RATIO OF PI- TO PI+ PRODUCTION OFF DEUTERIUM.

Table 2

No description provided.

Table 3

No description provided.