Edwards, T.R.M.
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Production of phi and f' in 10-GeV/c K- p Interactions

The Bari-Bonn-CERN-Daresbury-Glasgow-Liverpool-Milan-Vienna collaboration Evangelista, C. ; Ghidini, B. ; Palano, A. ; et al.
Nucl.Phys.B 127 (1977) 384, 1977.
Inspire Record 5792 DOI 10.17182/hepdata.35286

None

4 data tables
Table 1

FOR THE FPRIME A PURE 2+ STATE IS ASSUMED AND ONLY JZ=+1,0,-1 CONTRIBUTIONS ARE CONSIDERED.

Table 2

No description provided.

Table 3

No description provided.

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The Reaction anti-p p --> anti-Lambda Lambda Between 1.50-GeV/c and 2.06-GeV/c

Jayet, B. ; Gailloud, M. ; Rosselet, P. ; et al.
Nuovo Cim.A 45 (1978) 371-388, 1978.
Inspire Record 135059 DOI 10.17182/hepdata.37573

The reaction\(\bar pp \to \bar \Lambda \Lambda \) has been studied in a bubble chamber experiment at eight incident momenta between 1.50 and 2.06 GeV/c. The differential cross-section, the polarization and the spin correlation coefficients have been measured. They have been compared with the prediction of two theoretical models: the K-meson conspiracy and the exchange of the K*K** degenerate trajectory associated with a Regge cut. The latter model gives the best representation of the data.

3 data tables
Table 1

No description provided.

Table 2

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Table 3

POLARIZATION AND SPIN CORRELATION COEFFICIENTS. AVERAGED OVER ALL ANGLES. SEE PAPER FOR DEFINITIONS, MORE DETAILS AND POSSIBLE T-DEPENDENCE.


The Production Properties of anti-p p --> anti-Delta++ Delta++ from 3.6-GeV/c to 12-GeV/c

Donald, R.A. ; Edwards, D.N. ; Houlden, M.A. ; et al.
Nucl.Phys.B 145 (1978) 1-23, 1978.
Inspire Record 136798 DOI 10.17182/hepdata.34883

Cross sections and decay distribution moments are presented for the reaction p p → Δ ++ Δ ++ at 3.6 GeV/ c , and compared with previously published data at 9.1 and 12 GeV/ c . With the aid of the quark model, we have isolated the natural and unnatural parity exchange contributions and shown them to accord with expectations based on simple Regge-pole exchanges.

13 data tables
Table 1

DOUBLE RESONANCE PRODUCTION IS 62 +- 2 PCT OF CHANNEL.

Table 2

DIFFERENTIAL CROSS SECTION INTERCEPT AND SLOPE. EVENT SAMPLE DEFINED BY CUTS ON LONGITUDINAL PHASE SPACE PLOT.

Table 3

No description provided.

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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

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Table 3

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A Precise Measurement of the $\Lambda^0$ Magnetic Moment

Schachinger, L. ; Bunce, G. ; Cox, P.T. ; et al.
Phys.Rev.Lett. 41 (1978) 1348, 1978.
Inspire Record 131342 DOI 10.17182/hepdata.20862

The magnetic moment of the Λ0 hyperon has been measured to be μΛ=(−0.6138±0.0047)μN.

1 data table
Table 1

No description provided.


Neutral Strange Particle Production by 300-GeV Protons

Skubic, P. ; Overseth, O.E. ; Heller, Kenneth J. ; et al.
Phys.Rev.D 18 (1978) 3115-3144, 1978.
Inspire Record 136908 DOI 10.17182/hepdata.24371

A neutral beam designed to transmit a high flux of Λ0 hyperons with momenta above 50 GeV/c has been built and operated at Fermilab. Inclusive production cross sections per target nucleus have been measured for p+A→Λ0+X, p+A→KS0+X, and p+A→Λ¯0+X with 300-GeV protons incident on solid targets A=berylium,copper,andlead. The region of phase space covered is predominantly projectile fragmentation: 0.2<~x<~1, 0<~p⊥<~2 GeV/c. The A dependence of the inclusive cross sections is analyzed. The cross sections are compared to other work in pp collisions by extrapolating the A dependence to A=1. The results of measurements of Λ0 and Λ¯0 polarization from the beryllium target are presented.

9 data tables
Table 1

No description provided.

Table 2

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Table 3

No description provided.

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OBSERVATION IN THE K+ K- SYSTEM OF A NEW STRUCTURE AT 2.2-GEV

The BARI-BONN-CERN-DARESBURY-GLASGOW-LIVERPOOL-MILAN-VIENNA collaboration Evangelista, C. ; Ghidini, B. ; Palano, A. ; et al.
Nucl.Phys.B 154 (1979) 381-393, 1979.
Inspire Record 146574 DOI 10.17182/hepdata.34680

A sample of 56 909 events of the reaction π − p→K + K − n at 10 GeV/ c has been measured in the Omega Spectrometer at CERN. In the K + K − system, besides production of mesons in the S ∗ /φ, f 0 / A 2 , g /ω ∗ and h regions we observe a new structure at 2.20 GeV with a width of the order of 200 MeV.

1 data table
Table 1

BREIT-WIGNER RESONANCES PLUS SMOOTH BACKGROUND FITTED TO K+ K- MASS SPECTRUM. RESTRICTIVE T-CUTS TO ENHANCE THE X(2200) GIVE CONSISTENT RESULTS.


Polarization Parameters in Neutral Pion Photoproduction

Bussey, P.J. ; Raine, C. ; Rutherglen, J.G. ; et al.
Nucl.Phys.B 154 (1979) 492-502, 1979.
Inspire Record 140230 DOI 10.17182/hepdata.34681

The polarisation parameters Σ, P and T have been measured for the process γ p→ π 0 p in the photon energy range 1300–2100 MeV and c.m. angles between 30° and 110°, in an experiment with a polarised beam and polarised target. The results are compared with a recent theoretical analysis which fits data from threshold to 16 GeV. The new data are in general agreement with the analysis, but with some significant discrepancies in detail.

9 data tables
Table 1

No description provided.

Table 2

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Table 3

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Polarization Parameters in Positive Pion Photoproduction

Bussey, P.J. ; Raine, C. ; Rutherglen, J.G. ; et al.
Nucl.Phys.B 154 (1979) 205-225, 1979.
Inspire Record 140382 DOI 10.17182/hepdata.43832

Measurements have been made of the polarisation parameters Σ , T and P for the process γ p → π + n in the photon energy range 520–2250 MeV at c.m. angles between 30° and 120°. These data were obtained in a double polarisation experiment, using the polarised photon beam from the Daresbury electron synchrotron incident on a polarised proton target. The data are compared with predictions from current theoretical analyses.

2 data tables
Table 1

No description provided.

Table 2

No description provided.