Schultz, C.
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Small Angle p p Elastic Scattering at Energies Between 285-MeV and 572-MeV

Aebischer, D. ; Favier, B. ; Greeniaus, L.G. ; et al.
Phys.Rev.D 13 (1976) 2478-2498, 1976.
Inspire Record 114031 DOI 10.17182/hepdata.24779

Differential cross sections for elastic p−p scattering have been measured at 285, 348, 398, 414, 455, 497, 530, and 572 MeV kinetic energy. The experiment was performed at the CERN synchrocyclotron, using multiwire proportional chambers placed directly in a proton beam. Scattering was observed for 1.5°≲θ≲10° in the laboratory system. The ratio αp of the real and imaginary parts of the non-spin-flip nuclear forward amplitude was derived from the interference between the Coulomb and nuclear amplitudes. The values obtained are model-dependent, but in this energy range αp is positive and decreases with energy. Qualitatively good agreement with dispersion-relation predictions is observed.

8 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurements of $p p \to \pi^+ d$ between 398-MeV and 572-MeV

Aebischer, D. ; Favier, B. ; Greeniaus, L.G. ; et al.
Nucl.Phys.B 108 (1976) 214-238, 1976.
Inspire Record 114332 DOI 10.17182/hepdata.35777

The reaction pp→ π + d was studied at incident proton energies of 398, 455, 497, 530 and 572 MeV. Measurements of dσ/dΩ at 455 and 572 MeV show the presence of pion d-waves in the pion-deuteron system. Asymmetry measurements yield similar conclusions. Total cross-section measurements agree with recent fits to earlier data.

5 data tables
Table 1

NORMALIZED TO 4.38 MB/SR AT THETA = 13.19 DEG FOR P P ELASTIC.

Table 2

NORMALIZED TO 4.68 MB/SR AT THETA = 13.35 DEG FOR P P ELASTIC.

Table 3

NORMALIZED (RELATIVE ERROR 2.1 PCT) TO THE DATA OF RICHARD-SERRE ET AL., NP B20, 413 (1970) (ABSOLUTE SCALE UNCERTAINTY 4.5 PCT).

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Anti-p n Annihilation Into pi- pi0 Between 1-GeV/c and 1.6-GeV/c

Borreani, G. ; Quassiati, B. ; Rinaudo, G. ; et al.
Nuovo Cim.A 32 (1976) 129-138, 1976.
Inspire Record 113564 DOI 10.17182/hepdata.37637

The annihilation\(\bar pn\) → π−π0 has been studied in a D2 bubble chamber at several beam momenta between 1.0 and 1.6 GeV/c. The cross-section has been measured to be (110±15) μb at an average beam momentum of 1.3 GeV/c. The study of the angular distribution shows the presence of anL = 3 wave.

3 data tables
Table 1

NO CORRECTIONS APPLIED FOR SPECTATOR PROTON MOMENTUM CUT NOR FOR ANY RESCATTERING IN DEUTERIUM NUCLEI.

Table 2

No description provided.

Table 3

DIP AT -U = 0.4 TO 0.6 (REFLECTING DIP NEAR COS(THETA) = -0.8).


Cross-Sections and Multiplicity Distributions for pi- p Interactions at 11.2-GeV/c

Forino, A. ; Gessaroli, R. ; Quareni-Vignudelli, A. ; et al.
Nuovo Cim.A 31 (1976) 696, 1976.
Inspire Record 3101 DOI 10.17182/hepdata.37695

Results are presented concerning topological cross-sections and multiplicity distribution for a π−p experiment at 11.2 GeV/c. The statistics used are one-half of the total ones (106 bubble chamber pictures). Comparison with data at different energies and theoretical predictions are made, and satisfactory agreement is obtained.

1 data table
Table 1

TABLE ALSO QUOTES PRONG CROSS SECTIONS FOR PRODUCTION OF VEE(S).


The Exclusive Channel pi- pi- pi+ p in pi- p Interactions at 147-GeV/c.

Fong, D. ; Heller, M. ; Shapiro, A.M. ; et al.
Nuovo Cim.A 34 (1976) 659-671, 1976.
Inspire Record 112629 DOI 10.17182/hepdata.37618

The results of a study of the reaction π-p→π-π-π+p at2 147 GeV/c carried out at the Fermilab Proportional Wire 30″ Bubble Chamber Hybrid Spectrometer are reported. More than 92% of the cross-section ((670±41) μb) for this reaction is contained in those for proton and pion diffraction dissociation. The cross-sections for pion diffraction events with three-pion invariant mass in given regions are in agreement with values obtained by extrapolation of fits to data at lower incidentpion momenta. ρ0π- events make an important contribution in the A1 and A2 mass regions, and the data are consistent with contributions from f0π- in the A3 mass region. The cross-section for proton diffraction events is in agreement with a smooth extrapolation of the data at lower momentum.

1 data table
Table 1

No description provided.


Coherent Photoproduction of Vector Mesons on Deuterium at 5.5-GeV

Gupta, Virendra Prakash ; Fung, S.Y. ; Oh, Y.T. ; et al.
Phys.Rev.D 14 (1976) 42-54, 1976.
Inspire Record 115714 DOI 10.17182/hepdata.24672

Coherent photoproduction of vector mesons ρ0, ω, φ, and ρ′ on deuterium was studied using the SLAC 82-in. bubble chamber exposed to linearly polarized photons at 5.5 GeV. The reaction channel γd→π+π−d was studied in detail. Nine independent density-matrix parameters have been determined from the ρ0 decay distribution. ρ production in this channel was found to proceed almost completely through natural-parity exchange for |t|≤0.25 GeV2 and conserve s-channel c.m. helicity for |t|≤0.15 GeV2. A measurement of differential cross section for this channel has been made.

3 data tables
Table 1

POLARIZED PHOTON - VECTOR MESON DENSITY MATRICES ARE EXPLAINED BY SCHILLING/SEYBOTH/WOLF NP B15, 397 (1970). 'SH' - HELICITY FRAME..............Z = 3,RF = 1-2. 'TH' - GOTTFRIED-JACKSON FRAME.....Z = 1,RF = 3. 'ADAIR' - ADAIR FRAME..............Z = 1,RF = 1-2.

Table 2

No description provided.

Table 3

ERROR INCLUDES BACKGROUND UNCERTAINTY.


Inelastic Muon-Proton Scattering: Multiplicity Distributions, and Prong Cross-Sections

del Papa, C. ; Dorfan, David E. ; Flatte, Stanley M. ; et al.
Phys.Rev.D 13 (1976) 2934, 1976.
Inspire Record 108053 DOI 10.17182/hepdata.24754

In a streamer-chamber experiment at the Stanford Linear Accelerator Center, we observed hadron production in inelastic collisions of 14-GeV positive muons in a liquid hydrogen target. We report on the experiment, the analysis, and the resulting cross sections for hadronic prongs as well as the charged-hadron multiplicity distributions.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Measurement of Medium-Energy alpha-Proton Elastic Scattering Beyond the First Minimum Region

Berger, J. ; Duflo, J. ; Goldzahl, L. ; et al.
Phys.Rev.Lett. 37 (1976) 1195-1198, 1976.
Inspire Record 116144 DOI 10.17182/hepdata.21086

The α-proton elastic scattering has been measured with α particles at equivalent incident proton energies of 438, 648, and 1036 MeV. A structure is observed at the position where a second minimum is expected in the differential cross section. Comparison with improved versions of the Glauber model are presented.

3 data tables
Table 1

X ERROR D(THETA) = 0.4400 DEG.

Table 2

X ERROR D(THETA) = 0.2200 DEG.

Table 3

X ERROR D(THETA) = 0.4400 DEG.


Measurements of Polarization and Spin Rotation in Proton Proton Elastic Scattering at 3.83-GeV/c

Deregel, J. ; Bruneton, C. ; Bystricky, J. ; et al.
Nucl.Phys.B 103 (1976) 269-278, 1976.
Inspire Record 113032 DOI 10.17182/hepdata.35989

The polarization P in proton-proton elastic scattering has been measured at 3.83 GeV/ c for 0.35 ⩽ | t | ⩽ 3.0 (GeV/ c ) 2 , i.e. 29° ⩽ θ c.m. ⩽ 93°. The polarization shows a minimum at − ⋍ 1.0 ( GeV /c) 2 followed by a maximum at −⋍1.5 ( GeV /c) 2 . At the same energy the spin rotation parameter R has been measured in the interval 0.18 ⩽ | t | ⩽ 0.57 (GeV/ c ) 2 . Comparison with the results at 6.0 and 15.75 GeV/ c shows a similar t -dependence and the same average value at all three energies.

5 data tables
Table 1

POLARIZED TARGET ASYMMETRY EQUALS RECOIL PROTON POLARIZATION BY TIME REVERSAL INVARIANCE.

Table 2

'A'. 'B'. 'D'.

Table 3

'A'. 'B'. 'C'. 'E'.

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Inelastic Two Prong Events in 147-GeV/c $\pi^- p$ Collisions.

Fong, D. ; Heller, M. ; Shapiro, A. ; et al.
Nucl.Phys.B 104 (1976) 32-51, 1976.
Inspire Record 112609 DOI 10.17182/hepdata.36026

None

1 data table
Table 1

No description provided.