HEPData Search

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Observation of increasing charged multiplicity as a function of transverse momentum in 28.5-gev/c p p interactions

Ramanauskas, A. ; Anderson, E.W. ; Fisher, G.P. ; et al.

Phys.Rev.Lett. 31 (1973) 1371-1374, 1973.

Inspire Record 83758 DOI 10.17182/hepdata.47029

We have measured the mean charged multiplicity n¯CH as a function of transverse momentum p⊥ of the forward proton in the reaction p+p→p+MM for five intervals of missing mass (MM) using our Multiparticle Argo Spectrometer System. We observe an increase of n¯CH for p⊥>1 GeV/c.

1 data table

Table 1

No description provided.

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

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Proton proton elastic scattering and nucleon resonance production at high-energies

Allaby, J.V. ; Diddens, A.N. ; Dobinson, R.W. ; et al.

Nucl.Phys.B 52 (1973) 316-382, 1973.

Inspire Record 73454 DOI 10.17182/hepdata.32650

Angular distributions of proton-proton elastic scattering have been measured for incident beam momenta of 10.0, 12.0, 14.2 and 24.0 GeV/ c over a range of lab scattering angles from 12 to 152 mrad. This is equivalent to a range of four-momentum transfer squared from about 0.1 to 6.7 GeV 2 at the highest momentum. Nucleon resonance production in the two-body reaction p + p → p + X has been studied at 24.0 GeV/ c incident momentum from 13.5 to 112 mrad by measuring the proton momentum spectra from the elastic peak down to a momentum corresponding to a missing mass of about 2.6 GeV. The new data are compared with previous results and theoretical models.

10 data tables

Table 1

ESTIMATED 8 PCT RANDOM ERROR.

Table 2

ESTIMATED 8 PCT RANDOM ERROR.

Table 3

ESTIMATED 8 PCT RANDOM ERROR.

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Small angle proton proton elastic scattering at very high-energies (460-GeV2 < s < 2900-GeV2)

Barbiellini, G. ; Bozzo, M. ; Darriulat, P. ; et al.

Phys.Lett.B 39 (1972) 663-667, 1972.

Inspire Record 73452 DOI 10.17182/hepdata.28304

We have investigated the above processes at the CERN Intersecting Storage Rings (ISR). Results show a marked change of the slope parameter b ( t , s ) = (d/d t ) ln (d σ /d t ) around − t ≈ 0.10 GeV 2 . The s − and t − dependence of b ( t , s ) have been observed over the interval 460 GeV 2 < s < 2900 GeV 2 and 0.02 GeV 2 < t < 0.40 GeV 2 .

4 data tables

Table 1

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Table 3

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Elastic electron - Proton Scattering at Large Four Momentum Transfer

Kirk, Paul N. ; Breidenbach, Martin ; Friedman, Jerome I. ; et al.

Phys.Rev.D 8 (1973) 63-91, 1973.

Inspire Record 73424 DOI 10.17182/hepdata.21999

Electron-proton elastic-scattering cross sections have been measured at the Stanford Linear Accelerator Center for four-momentum transfers squared q 2 from 1.0 to 25.0 (GeVc)2. The electric (GEp) and magnetic (GMp) form factors of the proton were not separated, since angular distributions were not measured at each q 2. However, values for GMp were derived assuming various relations between GEp and GMp. Several theoretical models for the behavior of the proton magnetic form factor at high values of q 2 are compared with the data.

22 data tables

Table 1

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Table 3

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K+ p elastic scattering between 432 and 939 mev/c

Adams, C.J. ; Davies, J.D. ; Dowell, J.D. ; et al.

Phys.Rev.D 4 (1971) 2637-2641, 1971.

Inspire Record 74758 DOI 10.17182/hepdata.23177

We present data from a spark-chamber study of K+p elastic scattering between 432 and 939 MeV/c, over the range −0.6<cosθc.m.<+0.7. With measurements at 13 momenta, and between 2000 events at the lowest momentum and 5000 events at the highest momentum, there is a major improvement over previous data. The elastic cross sections deduced from the differential cross sections are almost independent of momentum through the range covered. The data are inconsistent with counter measurements of the total cross section which suggest a sharp shoulder in the cross section at about 700 MeV/c.

15 data tables

Table 1

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Table 3

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Pi+- and pi0 production by polarized photons in the resonance region

Alspector, J. ; Fox, D. ; Luckey, David ; et al.

Phys.Rev.Lett. 28 (1972) 1403-1406, 1972.

Inspire Record 75484 DOI 10.17182/hepdata.21872

We have measured the cross sections at 90° c.m. for π± and π0 photoproduction with polarized photons. The photon energies ranged from 0.8 to 2.2 GeV. We compare the resonant "bumps" in the cross section with theoretical models. The measured asymmetry agrees with a quark-model calculation though the predicted cross sections are low.

5 data tables

Table 1

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Proton-deuteron elastic scattering at 1.0 gev/c

Booth, N.E. ; Dolnick, C. ; Esterling, R.J. ; et al.

Phys.Rev.D 4 (1971) 1261-1267, 1971.

Inspire Record 74877 DOI 10.17182/hepdata.23150

The differential cross section and polarization in p−d elastic scattering have been measured at an incident laboratory momentum of 0.99 GeVc (kinetic energy 425 MeV) over most of the angular range. Elastic p−d scattering events from a CD2 target were selected by angular correlation, coplanarity, and time of flight. A significant feature of the results is the large positive polarization at backward scattering angles.

1 data table

Table 1

No description provided.

Measurement of k- production in the reaction k- p ---> k- p

Blieden, H.R. ; Finocchiaro, G. ; Kirz, J. ; et al.

Phys.Lett.B 39 (1972) 668-670, 1972.

Inspire Record 75745 DOI 10.17182/hepdata.41300

The K ∗− spectrum in the reaction K − +p → K ∗− +p has been measured at beam momenta 10.9, 13.4 and 15.9 GeV/ c using the missing mass technique. Production of the L(1770), and a Q-K ∗ (1420) enhancement are observed. Differential cross sections in the range of momentum transfer 0.12 < | t pp | < 0.40 (GeV/ c ) 2 are given. The L meson is observed with a width Γ = 100 ± 26 MeV. The mass spectrum between the L and 2.5 GeV does not show significant structure.

2 data tables

Table 1

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Table 2

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