Groves, E.
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Electroproduction of eta-mesons at the s(11)(1535) resonance

Beck, U. ; Becks, K.H. ; Burkert, V. ; et al.
Phys.Lett.B 51 (1974) 103-105, 1974.
Inspire Record 95168 DOI 10.17182/hepdata.27938

The reaction e − + p → e − + p + η has been studied in the region of the S 11 (1535)-resonance by detecting the recoil proton in coincidence with the scattered electron. The reaction has been observed at three four-momentum transfers of the virtual photon: q 2 = 0.2, 0.28 and 0.4 (GeV/ c ). First results of the differential cross section measurements are given and compared with quark model calculations.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Photoproduction of neutral pions off hydrogen at photon energies between 0.55 and 2.2 gev at a cm-angle of 120 degrees

Feller, P. ; Herr, H. ; Hilger, E. ; et al.
Phys.Lett.B 49 (1974) 197-200, 1974.
Inspire Record 95299 DOI 10.17182/hepdata.27964

The differential cross section has been measured for the reaction γ +p→ π o + p at the Bonn 2.5 GeV electron synchrotron in the energy range from 0.55 to 2.2 GeV at a c.m.angle of 120 degrees.

1 data table
Table 1

No description provided.


Differential cross-sections for anti-p p ---> pi- pi+, k- k+ between 0.8 and 2.4 gev/c

Eisenhandler, E. ; Gibson, W.R. ; Hojvat, C. ; et al.
Phys.Lett.B 47 (1973) 531-535, 1973.
Inspire Record 95394 DOI 10.17182/hepdata.28034

We present measurements from a spark chamber experiment of the differential cross-sections for p p → π − π + , K − K + at 20 momenta in the range 0.8–2.4 GeV/ c (c.m. energy 2.02 to 2.57 GeV). The c.m. angular range was −0.95 < cos θ ∗ < 0.95 . There are about 2000π − π + events and about 300 K − K + events at each momentum.

1 data table
Table 1

ALL ANGLES.


Measurement of the polarization in k- p ---> anti-k0 n charge exchange at 8 gev/c

Beusch, W. ; Borghini, M. ; Misuri, G. ; et al.
Phys.Lett.B 46 (1973) 477-480, 1973.
Inspire Record 95156 DOI 10.17182/hepdata.28055

The K − p → K 0 n polarization has been measured at 8 GeV/ c and for − t values ranging from 0 up tp 1.2 (GeV/ c ) 2 . A negative polarization has been found.

1 data table
Table 1

No description provided.


Results on the production cross-sections pi- p ---> neutrals and pi- p ---> chi0(2gamma) n at 3.8, 6, 8 and 12 gev/c

Apel, W.D. ; Auslaender, J. ; Mueller, H. ; et al.
Phys.Lett.B 46 (1973) 459-464, 1973.
Inspire Record 95163 DOI 10.17182/hepdata.28058

The ratio between the cross sections for the reactions π − p→ χ ↳ 2γ 0 n and π − p → η →2 γ n has been measured to be (2.4 ± 0.9) × 10 −2 , (2.1 ± 0.6) × 10 −2 and (2.8 ± 1.3) × 10 −2 at 3.8,6,8 and 12 GeV/ c incident momentum respectively.

1 data table
Table 1

ETAPRIME CROSS SECTIONS DEDUCED FROM THEIR RATIO TO ETA PRODUCTION, USING THE RESULTS OF O. GUISAN ET AL., PL 18, 200 (1965).


Topological and Leading Particle Cross-Sections for 147-GeV/c $\pi^- p$ Interactions.

Fong, D.G. ; Heller, M. ; Shapiro, A.M. ; et al.
Phys.Lett.B 53 (1974) 290-296, 1974.
Inspire Record 93415 DOI 10.17182/hepdata.27916

Results are reported based on a study of π − p interactions at 147 GeV/ c in the FERMILAB 30-inch Proportional Wire Hybrid Bubble Chamber System. We have measured the topological cross sections and separated two-prong elastic and inelastic channels. In addition, we have extracted leading particle cross sections using the increased momentum resolution of the downstream proportional wire chambers. We have compared our results with experiments and predictions of a simple fragmentation hyphothesis.

1 data table
Table 1

No description provided.


Pi0 electroproduction at the delta(1236) resonance at a four-momentum transfer of q-squared = 0.3(gev/c)-squared

Baetzner, K. ; Beck, U. ; Becks, K.H. ; et al.
Nucl.Phys.B 76 (1974) 1-14, 1974.
Inspire Record 94609 DOI 10.17182/hepdata.32274

The reaction e − + p → e − + p + π 0 has been studied in the region of the Δ (1236) resonance at a four-momentum transfer of the virtual photon of 0.3 (GeV/ c ) 2 . Angles and momenta of the secondary electron and of the outgoing proton were measured in coincidence to obtain the angular dependence of the differential cross section. The angular distribution for s- and p-waves of the pion in the πN cm-system was fitted to the cross section for three W -bins around the maximum of the resonance. The contribution of the resonant multipoles M 1+ , E 1+ and S 1+ to the cross section as well as the contribution of the background amplitudes M 1− , E 0+ and S 0+ are given.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


The total and differential cross-sections for the reaction anti-p + p ---> anti-n + n at 1.13 gev/c

Colebourne, A. ; Donald, R.A. ; Edwards, D.N. ; et al.
Nucl.Phys.B 70 (1974) 205-214, 1974.
Inspire Record 94753 DOI 10.17182/hepdata.32347

The reaction p ̄ p → n ̄ n has been studied at an incident antiproton laboratory momentum of 1.13 GeV/ c . The antineutron was identified through a subsequent annihilation on a proton. In all, 2601 identified events were obtained. Total and differential cross sections are presented. Comparison is made with the predictions of the Bryan and Phillips model which, in this energy range, is succesful in describing the related reaction p ̄ p → p ̄ p . Here, the agreement is less good.

1 data table
Table 1

No description provided.


Study of the reactions anti-p p ---> anti-lambda lambda, anti-lambda sigma0 or anti-sigma0 lambda, anti-sigma+ sigma+ at 3.6 gev/c

Atherton, H.W. ; French, B.R. ; Moebes, J.P. ; et al.
Nucl.Phys.B 69 (1974) 1-14, 1974.
Inspire Record 94822 DOI 10.17182/hepdata.32345

The reactions p p → Λ Λ, Λ Σ 0 or Σ 0 Λ, Σ + Σ + are studied at an incident momentum of 3.6 GeV/ c in a 35.4 event/μb experiment performed in the CERN 2m HBC. Total and differential cross sections are presented. The polarization of the hyperons is measured as a function of t and for the reaction p p → Λ Λ the complete spin correlation matrix is given.

4 data tables
Table 1

35.4 event/mub data sample used.

Table 2

35.4 event/mub data sample used.

Table 3

35.4 event/mub data sample used.

More…

Channel cross-sections for k- p ---> lambda0 neutrals between 0.525 and 0.820 gev/c

Chu, R.Y.L. ; London, G.W. ; Yu, Y.P. ; et al.
Nucl.Phys.B 64 (1973) 109-133, 1973.
Inspire Record 94945 DOI 10.17182/hepdata.32478

A study has been made of the individual channels that contribute to the reaction K − p → Λ 0 + neutrals in the K − momentum range from 525 to 820 MeV/ c . Total cross sections are presented for the K − p → Λ 0 η 0 , Σ 0 Σ 0 π 0 , Λ 0 π 0 , Σ 0 π 0 and Σ 0 π 0 π 0 channels and differential cross sections for K − p → Λ 0 π 0 . The data were obtained in a heavy liquid bubble chamber experiment with an average gamma detection efficiency of 70%. Only events with all decay gammas detected were used for analysis. This is the first of a series of papers on this subject and presents the experimental technique in detail.

1 data table
Table 1

No description provided.