Diddens, A.N.
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Discontinuous behaviour in large angle proton-proton elastic scattering at high energies

Allaby, J.V. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett.B 25 (1967) 156-159, 1967.
Inspire Record 1389227 DOI 10.17182/hepdata.754

Measurements of elastic proton-proton differential cross sections for angles between 65° and 90° c.m.s. have been made at 8, 9, 10, 11, 14, 15 and 21 GeV/c. The shape of the angular distribution is found to change suddenly between 8 and 11 GeV/c. An interpretation of this discontinuous behaviour in terms of the reactive effects of baryon-antibaryon pair production is proposed.

2 data tables match query
Table 1

No description provided.

Table 2

No description provided.


Proton-proton small angle scattering and total cross section of 10.0 GeV⧸c

Bellettini, G. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett. 19 (1966) 705-705, 1966.
Inspire Record 1389783 DOI 10.17182/hepdata.782

None

3 data tables match query
Table 1

No description provided.

Table 2

Axis error includes +- 0.0/0.0 contribution.

Table 3

No description provided.


A Precise Measurement of the $Z$ Resonance Parameters Through Its Hadronic Decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adami, F. ; et al.
Phys.Lett.B 241 (1990) 435-448, 1990.
Inspire Record 295501 DOI 10.17182/hepdata.29722

A measurement of the cross section for e + e - → hadrons using 11 000 hadronic decays of the Z boson at ten different center-of-mass energies is presented. A three-parameter fit gives the following values for the Z mass M z , the total width Γ z , the product of the electronic and hadronic partial widths Γ e Γ h , and the unfolded pole cross section σ 0 : M Z =91.171±0.030(stat)±0.030 (beam) GeV, Γ Z =2.511±0.065 GeV, Γ e Γ h =0.148±0.006 (stat.)±0.004 (syst.) GeV 2 , σ 0 =41.6±0.7(stat.)±1.1 (syst.) nb,

1 data table match query
Table 1

No description provided.


The Energy dependence of the proton proton total cross-section for center-of-mass energies between 23 and 53 GeV

Amaldi, U. ; Biancastelli, R. ; Bosio, C. ; et al.
Phys.Lett.B 44 (1973) 112-118, 1973.
Inspire Record 83729 DOI 10.17182/hepdata.28110

Measurements of proton-proton elastic scattering at angles around 6 mrad have been made at centre-of-mass energies of 23, 31, 45 and 53 GeV using the CERN Intersecting Storage Rings. The absolute scale of the cross-section was established by determination of the effective density of the colliding beans in their overlap region. Proton-proton total cross sections were deduced by extrapolation of the elastic differential cross-section to the forward direction and by application of the optical theorem. The results indicate that over the energy range studied the proton-proton total cross-section increases from about 39 to about 43 mb.

2 data tables match query
Table 1

No description provided.

Table 2

NEW VALUES OF ELASTIC SLOPE USING APPARATUS DESCRIBED IN U. AMALDI ET AL., PL 43B, 231 (1973).


Energy dependence of the structure in high energy proton proton elastic scattering

Allaby, J.V. ; Diddens, A.N. ; Robinson, R.W. ; et al.
Phys.Lett.B 34 (1971) 431-434, 1971.
Inspire Record 69311 DOI 10.17182/hepdata.28522

The angular distribution of proton-proton elastic scattering has been measured for incident beam momenta of 10.0, 12.0, 14.2 and 24.0 GeV/ c over a range of laboratory scattering angles from 12 to about 140 mrad. The results are compared with the fourth power of the electromagnetic form of the proton.

1 data table match query
Table 1

No description provided.


The Real Part of the Forward Proton Proton Scattering Amplitude Measured at the CERN Intersecting Storage Rings

Amaldi, U. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett.B 66 (1977) 390-394, 1977.
Inspire Record 110800 DOI 10.17182/hepdata.27584

The real part of the proton proton elastic scattering amplitude has been determined from its interference with the Coulomb amplitude at total centre-of-mass energies up to 62 GeV. The observed steady increase of ϱ with energy indicates that the total proton proton cross section continues to increase well beyond this energy.

2 data tables match query
Table 1

No description provided.

Table 2

USING SIG AND SLOPE OBTAINED FROM INTERPOLATIONS OF PREVIOUS MEASUREMENTS.


New measurements of proton proton total cross-section at the CERN intersecting storage rings

The CERN-Pisa-Rome-Stony Brook collaboration Amaldi, U. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett.B 62 (1976) 460-466, 1976.
Inspire Record 108915 DOI 10.17182/hepdata.27653

Measurements of the proton-proton total cross section have been made with increased precision (±0.6%) over the ISR energy range s =23.5−62.7 GeV . Two different experimental methods gave consistent results, showing that the total cross section increases 10% over the ISR range and in addition that the absolute value of the ISR luminosity can be measured to ±0.9%.

1 data table match query
Table 1

CROSS SECTIONS ARE A WEIGHTED AVERAGE OF THOSE OBTAINED BY THE PISA-STONY BROOK METHOD AND BY THE CERN-ROME (OPTICAL THEOREM) METHOD.


Correlations of secondaries in events with a forward neutron at the ISR

Amaldi, U. ; Bartel, W. ; Cocconi, G. ; et al.
Phys.Lett.B 58 (1975) 213-218, 1975.
Inspire Record 98548 DOI 10.17182/hepdata.27791

Data, obtained from p-p collisions at centre-of-mass energies between 31 and 63 GeV, are presented on inclusive and semi-inclusive correlations between forward emitted neutrons and charged particles observed in an omnidirectional hodoscope. A total absorption spectrometer was used to detect the neutrons and to measure their energy. Significant correlations are observed over the whole rapidity range. The data suggest that neutrons result from the decay of clusters emitted in the fragmentation region.

4 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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The real part of the proton-neutron scattering amplitude at 19.3 GeV/c

Bellettini, G. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett. 19 (1965) 341-345, 1965.
Inspire Record 1392872 DOI 10.17182/hepdata.30174

None

1 data table match query
Table 1

'1'. '2'. 'GLAUB'.


Correlations of secondaries in events with a forward negative hadron at the ISR

Amaldi, U. ; Bartel, W. ; Cocconi, G. ; et al.
Phys.Lett.B 58 (1975) 206-212, 1975.
Inspire Record 98549 DOI 10.17182/hepdata.27812

Data obtained from p-p collisions at centre-of-mass energies between 31 and 63 GeV are presented on correlations between momentum analysed forward π − , K − and p and charged particles observed in an omnidirectional hodoscope. The data show that significant correlations are present over the whole rapidity range for all three types of negative particles. The dependence on various kinematic variables suggests a cluster mechanism for the production of particles. In this picture, pions would be produced in clusters emitted in the fragmentation region while K − and p emanate from non-leading clusters.

6 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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