Cocconi, Vanna T
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A Study of the Reaction anti-p p --> pi- pi+ at 10-GeV/c

Berglund, A. ; Buran, T. ; Carlson, P.J. ; et al.
Nucl.Phys.B 137 (1978) 276-282, 1978.
Inspire Record 135348 DOI 10.17182/hepdata.35092

The reaction p p → π − π + has been studied at 10.1 GeV/ c in the − t interval from 0.15 to 1.5 (GeV/ c ) 2 . A line-reversal comparison with backward elastic scattering π + p → p π + shows good agreement for − t > 0.3 (GeV/ c ) 2 .

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Photoproduction of K+ Lambda0 on Polarized Protons

Althoff, K.H. ; Gies, M. ; Herr, H. ; et al.
Nucl.Phys.B 137 (1978) 269-275, 1978.
Inspire Record 135345 DOI 10.17182/hepdata.35095

The target asymmetry for the reaction γ p → K + Λ 0 was measured at the Bonn 2.5 GeV synchroton. Data were taken at a fixed kaon c.m. angle of 90° and at photon energies between 1.1 and 1.3 GeV. The kaons were detected in a large aperture magnetic spectrometer.

1 data table
Table 1

5 PCT TARGET POLARIZATION UNCERTAINTY INCLUDED IN QUOTED ERRORS.


Measurement of the Polarization of the Lambda0 in the Reaction gamma p --> K+ Lambda0 in the Resonance Region

Haas, R. ; Miczaika, T. ; Opara, U. ; et al.
Nucl.Phys.B 137 (1978) 261-268, 1978.
Inspire Record 135344 DOI 10.17182/hepdata.35123

At the Bonn 2.5 GeV synchrotron the polarization of the Λ 0 was measured at 40° and 90° for three energies. The kaon was detected with a strong focussing magnetic spectrometer and separated from other particles with the help of a differential liquid Čerenkov counter. The polarization was determined by means of the angular distribution of the decay proton which was measured with a combination of sonic spark chambers and a scintillation counter hodoscope. The typical statistical errors are about 13%. The systematic errors add up to 8%.

1 data table
Table 1

No description provided.


Elastic He p Scattering Under Small Angles in the Energy Interval 1.75-GeV/Nucleon-4.13-GeV/Nucleon.

The DUBNA-WARSAW-LENINGRAD collaboration Beznogikh, G.G ; Budilov, V.A. ; Devenski, P. ; et al.
Yad.Fiz. 27 (1978) 710-715, 1978.
Inspire Record 134520 DOI 10.17182/hepdata.18191

None

3 data tables
Table 1

X ERROR D(-T)/(-T) = 2.0000 PCT.

Table 2

X ERROR D(-T)/(-T) = 2.0000 PCT.

Table 3

X ERROR D(-T)/(-T) = 2.0000 PCT.


Measurement of muon neutrino and antineutrino scattering off electrons.

Faissner, H. ; Fasold, H.G. ; Frenzel, E. ; et al.
Phys.Rev.Lett. 41 (1978) 213-216, 1978.
Inspire Record 135343 DOI 10.17182/hepdata.20832

Muon-neutrino and -antineutrino scattering off electrons was detected in a 19-ton Al spark chamber, exposed to the wide-band ν (ν¯) beam from the CERN proton synchrotron. The background was determined experimentally. 11 (10) genuine νμ− (ν¯μ−) e scattering events were found. The respective cross sections are (1.1±0.6)×10−42(Eν/GeV) cm2 and (2.2±1.0)×10−42(Eν/GeV) cm2. The analysis excludes a pure V−A interaction, and makes a pure V or A theory improbable. The data agree well with the Salam-Weinberg model and sin2θW=0.35±0.08.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


HYPERON POLARIZATION IN LAMBDA P ELASTIC SCATTERING IN THE RANGE 60-GEV/C < P < 380-GEV/C

Edelman, B. ; Bunce, G. ; Devlin, T. ; et al.
Phys.Rev.Lett. 40 (1978) 491-494, 1978.
Inspire Record 131690 DOI 10.17182/hepdata.20918

Polarization of the scattered Λ has been measured in the reaction Λ+p→Λ+p. A total of 90 000 elastic events was recorded. Polarization was observed which decreased in magnitude with increasing momentum. For 0.1<~|t|<~0.4 GeV2 the polarization is P=−0.21±0.07 for p=110 GeV/c and is +0.01±0.04 at p=320 GeV/c. Results for 860 Λ¯−p elastic scatterings are also presented.

2 data tables
Table 1

90000 ELASTIC EVENTS.

Table 2

860 ELASTIC EVENTS.


Forward Inclusive Production Spectrum of $K(s$), $\Lambda^0$, $\bar{\Lambda}$0, and $n$ in the Collision of 200-{GeV}/$c \pi^-$, $K^-$, $\bar{p}$ and $p$ on Be

Edwards, R.T. ; Devlin, T. ; Edelman, B. ; et al.
Phys.Rev.D 18 (1978) 76, 1978.
Inspire Record 6216 DOI 10.17182/hepdata.24325

We have measured the forward production spectra of various neutral particles produced by π−, K−, p¯, and p at 200 GeV/c, and by π− at 290 GeV/c incident on a Be target. The salient features of these measurements are (1) copious production of KSo at large Feynman xL for incident π− and K−, (2) production of roughly equal fluxes of Λ0 and Λ¯0 for incident π−, and (3) close similarity of the following spectra: π−→n and K−→Λ0; π−→Λ0, π−→Λ¯0, and p→KS0; π−→KS0 and p→Λ0. The overall features of the various distributions seem to agree with the ideas of dimensional counting presented in the constituent-interchange model of quark collisions. Results are presented in terms of the invariant cross section Ed3σ(xL, PT=0)dp3 per Be nucleus for each inclusive reaction.

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Measurements of the Photon Total Cross-Section on Protons from 18-GeV to 185-GeV

Caldwell, David O. ; Cumalat, John P. ; Eisner, A.M. ; et al.
Phys.Rev.Lett. 40 (1978) 1222, 1978.
Inspire Record 129172 DOI 10.17182/hepdata.3355

The photon total cross section on protons has been measured with high precision in the Fermilab tagged-photon beam for photon energies from 18 to 185 GeV. The cross section decreases to a broad minimum near 40 GeV, and then rises by about 4 μb over the remainder of the range. A ρ+ω+ϕ vector-dominance model (normalized to low-energy data) falls below the high-energy results by 2 to 6 μb, suggesting a contribution from charm-anticharm states.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


rivet Analysis
Total Cross-section for Hadron Production by $e^+ e^-$ Annihilation at Center-of-mass Energies Between 3.6-{GeV} and 5.2-{GeV}

The DASP collaboration Brandelik, R. ; Braunschweig, W. ; Martyn, H.U. ; et al.
Phys.Lett.B 76 (1978) 361, 1978.
Inspire Record 129715 DOI 10.17182/hepdata.27431

The total cross section for e + e − annihilation into hadronic final states between 3.6 and 5.2 GeV was measured by the nonmagnetic inner detector of DASP, which has similar trigger and detection efficiencies for photons and charged particles. The measured difference in R = σ had / σμμ between 3.6 GeV and 5.2 GeV is ΔR = 2.1 ± 0.3. We observe three peaks at cm energies of 4.04, 4.16 and 4.417 GeV, the parameters of which, when interpreted as resonances, are given.

2 data tables
Table 1

EXCLUDING CONTRIBUTION OF TAU HEAVY LEPTON.

Table 2

INCLUDING CONTRIBUTION OF TAU HEAVY LEPTON.


A Study of A2 and $g$ Resonance Production in $\pi^- p \to K^- K^0 p$

Martin, Alan D. ; Ozmutlu, E.N. ; Baldi, R. ; et al.
Nucl.Phys.B 140 (1978) 158-178, 1978.
Inspire Record 129933 DOI 10.17182/hepdata.35032

We present the results and the analysis of a high-statistics experiment to study A 2 and g production in the reaction π − p→K − K S 0 p at 10 GeV/ c . In each resonance region we perform a moment analysis of the data, and from the moments we determine the production amplitudes as a function of t . We find A 2 production proceeds dominantly by natural-parity (pomeron and f) exchange. We compare A 2 and diffractive K ∗ (1420) production. We find g production proceeds by π and ω exchanges; we determine the g → K K branching ratio.

2 data tables
Table 1

No description provided.

Table 2

No description provided.