Lach, J.
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Observation of small angle proton proton elastic scattering at 30 gev and 45 gev center-of-mass energies

Holder, M. ; Radermacher, E. ; Staude, A. ; et al.
Phys.Lett.B 35 (1971) 355-360, 1971.
Inspire Record 69228 DOI 10.17182/hepdata.5781

Small angle elastic scattering events have been observed at the CERN Intersecting Storage Rings. Directions of both particles as well as the collision vertex are reconstructed with the help of four sets of spark chambers, two for each of the two arms. The elastic nature of the events is demonstrated by a collinearity requirement. We find values for the (diffraction) slope parameter in disagreement with the simple linear extrapolation of lower energy (Surpukov) data.

4 data tables
Table 1

NUMBER OF EVENTS 87364.

Table 2

NUMBER OF EVENTS 8305.

Table 3

No description provided.

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p p Interactions at 303-GeV/c: Multiplicity and Total Cross-Section.

Dao, F.T. ; Gordon, D. ; Lach, J. ; et al.
Phys.Rev.Lett. 29 (1972) 1627-1630, 1972.
Inspire Record 73776 DOI 10.17182/hepdata.21429

In an exposure of the 30-in. hydrogen bubble chamber to a 303−GeVc proton beam, 2245 interactions have been observed. The measured total cross section is 39.0±1.0 mb and the average charged particle multiplicity 〈nch〉=8.86±0.16.

1 data table
Table 1

TOPOLOGICAL CROSS SECTIONS.


Average charged particle multiplicity and topological cross-sections in 50-GeV/c and 69-GeV/c p p interactions

Ammosov, V.V. ; Boitsov, V.N. ; Ermolov, P.F. ; et al.
Phys.Lett.B 42 (1972) 519-521, 1972.
Inspire Record 74383 DOI 10.17182/hepdata.28174

In an exposure of the chamber Mirabelle at the Serpukhov accelerator, 1 943 interactions at 50 GeV/ c and 8 959 at 69 GeV/ c have been observed. Topological cross sections and charged multiplicity distributions are presented. The average charged multiplicities found are respectively 5.32 ± 0.13 and 5.89 ± 0.07.

1 data table
Table 1

2PRONG INELASTIC CROSS SECTIONS DERIVED BY SUBTRACTION OF OTHER PRONG CROSS SECTIONS AND KNOWN ELASTIC MEASUREMENTS FROM THE TOTAL.


Measurements of the proton proton total cross-sections by means of Coulomb scattering at the Cern intersecting storage rings

Amaldi, U. ; Biancastelli, R. ; Bosio, C. ; et al.
Phys.Lett.B 43 (1973) 231-236, 1973.
Inspire Record 74360 DOI 10.17182/hepdata.28156

Proton-proton elastic scattering has been measured at the CERN Intersecting Storage Rings in the four-momentum transfer range 0.001 ⩽… t …⩽ 0.015 GeV 2 at centre-of-mass energies of 23 and 31 GeV. The detection of Coulomb scattering and of its interference with nuclear scattering leads to the determination of the real part of the nuclear amplitude and of the total proton-proton cross section by the optical theorem.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


A MEASUREMENT OF THE p p TOTAL CROSS-SECTION AT 200-GeV/c AND 300-GeV/c

Gustafson, H.Richard ; Jones, Lawrence W. ; Longo, Michael J. ; et al.
Phys.Rev.Lett. 32 (1974) 441-444, 1974.
Inspire Record 80575 DOI 10.17182/hepdata.21301

We have measured total cross sections for p−p scattering with the results σT=40.42±0.27 mb at 200 GeV/c and 40.40 ± 0.28 mb at 300 GeV/c. Our 300-GeV/c result is significantly higher than published data from the CERN intersecting storage rings. Our data, taken together with the Serpukhov data, indicate that the cross section rises ≅ 2 mb between 60 and 250 GeV. The variation of the cross section with energy may be more complicated than the a+blnsα behavior commonly assumed for Elab≳50 GeV.

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (QUOTED ERRORS ARE COMBINED STATISTICAL AND SYSTEMATIC).


Updated Charged-Particle Multiplicity Distribution from 205-GeV/c Proton Proton Interactions

Barish, S. ; Cho, Y. ; Colley, D.C. ; et al.
Phys.Rev.D 9 (1974) 2689, 1974.
Inspire Record 609 DOI 10.17182/hepdata.21974

The charged-particle multiplicity distribution in 205−GeVc proton-proton interactions is presented. In addition, the total diffractive contributions to each charged multiplicity are estimated assuming a factorizable Pomeron.

1 data table
Table 1

THE TOTAL CROSS SECTION NORMALIZATION COMES FROM THIS AND OTHER EXPERIMENTS.


Neutron-Proton Total Cross-Sections from 40-GeV/c to 280-GeV/c

Longo, Michael J. ; Ayre, Cyril A. ; Gustafson, H.Richard ; et al.
Phys.Rev.Lett. 33 (1974) 725, 1974.
Inspire Record 89896 DOI 10.17182/hepdata.21237

We present results of measurements of the n−p total cross section between 30 and 280 GeV/c. The measurements were carried out with a neutron beam by using the standard transmission technique and a liquid-hydrogen target. A total-absorption calorimeter was used to determine the neutron energy. Our measurements, which have an accuracy of ∼1%, indicate a smooth rise of approximately 1.5 mb between 50 and 280 GeV/c. The combined n−p and p−p data above 20 GeV/c are well fitted by the expression σ=38.4+0.85|ln(s95)|1.47 mb.

1 data table
Table 1

MOST DATA TAKEN WITH 300 GEV/C INCIDENT PROTONS TO PRODUCE THE NEUTRON BEAM, WITH SOME ALSO USING 200 GEV/C PROTONS.


$pp$ Interactions at 300-GeV/c: Measurement of the Charged Multiplicity, Total and Elastic Cross-Sections

Firestone, A. ; Davidson, V. ; Lam, D. ; et al.
Phys.Rev.D 10 (1974) 2080, 1974.
Inspire Record 1242 DOI 10.17182/hepdata.25012

In a 35 000-picture exposure of the 30-in. hydrogen bubble chamber to a 300-GeV/c proton beam at the Fermi National Accelerator Laboratory, 10054 interactions have been observed. The measured total cross section is $40.68 \pm 0.55$ mb, the elastic cross section is $7.89 \pm 0.52$ mb, and the average charged-particle multiplicity for inelastic events is $8.S0 \pm 0.12$.

2 data tables
Table 1

QUOTED ERRORS INCLUDE EFFECTS OF CORRECTIONS.

Table 2

No description provided.


Production of Nucleon Resonances by Single Diffraction Dissociation at the CERN ISR

Webb, R. ; Trilling, G. ; Telegdi, V. ; et al.
Phys.Lett.B 55 (1975) 331-335, 1975.
Inspire Record 91189 DOI 10.17182/hepdata.27915

The single diffraction dissociation process pp → (p π + π − )p has been studied at the CERN ISR at √ s = 45 GeV and 0.1 < − t < 0.6 GeV 2 . The reaction is dominated by nucleon resonance production: pp → pN (1520) and pp → pN(1688) with cross-sections (0.25 ± 0.08) mb and (0.56 ± 0.19) mb respectively.

2 data tables
Table 1

DIFFERENTIAL CROSS SECTIONS FOR THREE RANGES OF <P PI+ PI-> MASS.

Table 2

FROM BREIT-WIGNER PLUS BACKGROUND FITS. CORRECTIONS FOR OTHER DECAY MODES USE THE PDG 1974 TABLES FOR N(1520) AND N(1688).


Dimuon Production by Neutrons

Knapp, B. ; Lee, Won-Yong ; Leung, P. ; et al.
Phys.Rev.Lett. 34 (1975) 1044, 1975.
Inspire Record 2108 DOI 10.17182/hepdata.21935

A very narrow resonance with a mass of 3.1 GeV/c2 is observed in the reaction n+Be→μ++μ−+X. The total cross section for this process, as well as its P⊥2 and x distribution, are given.

1 data table
Table 1

The cross section per nucleon times the branching ratio.