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Cross-Sections of Annihilation and Inelastic Final States for anti-p p Interactions at 9.1-GeV/c

The LIVERPOOL-STOCKHOLM collaboration Gregory, P.S. ; Johnson, P. ; Mason, P. ; et al.
Nucl.Phys.B 119 (1977) 60-76, 1977.
Inspire Record 123859 DOI 10.17182/hepdata.8340

Topological and channel cross sections are given for annihilation and inelastic final states produced in p p interactions at 9.1 GeV/c. Cross sections for prominent resonances in specific channels and charged pion, ϱ 0 and Δ ++ inclusive cross sections are also presented.

6 data tables
Table 1

No description provided.

Table 2

FITTED FORWARD D(SIG)/DT = 153 +- 8 MB/GEV**2.

Table 3

CHANNEL CROSS SECTIONS FOR 2, 4, 6, AND 8 PRONG REACTIONS.

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ELASTIC SCATTERING AND TOTAL CROSS-SECTIONS: RECENT EXPERIMENTAL RESULTS

Ekelof, T. ;
283-294, 1983.
Inspire Record 201990 DOI 10.17182/hepdata.1427

None

3 data tables
Table 1

No description provided.

Table 2

BEST ESTIMATE BASE ON THIS AND EARLIER MEASUREMENT ASSUMING RHO = 0.15.

Table 3

No description provided.


Antiproton-proton elastic scattering at 4 GeV/c and derivation of diffraction slope at infinite energy

Czyzewski, O. ; Escoubes, B. ; Goldscmidt-Clermont, Y. ; et al.
Phys.Lett. 15 (1965) 188-191, 1965.
Inspire Record 1392865 DOI 10.17182/hepdata.837

None

4 data tables
Table 1

'1'. '2'.

Table 3

No description provided.

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Elastic scattering and polarisation in 3.0 and 3.6 GeV/c antiproton-proton collisions

Escoubès, B. ; Fedrighini, A. ; Goldschmidt-Clermont, Y. ; et al.
Phys.Lett. 5 (1963) 132-136, 1963.
Inspire Record 1389108 DOI 10.17182/hepdata.751

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Non-annihilation channels in interactions near centre of mass energy 2200 MeV

Bacon, T.C. ; Butterworth, I. ; Miller, R.J. ; et al.
Nucl.Phys.B 32 (1971) 66-74, 1971.
Inspire Record 1385802 DOI 10.17182/hepdata.33173

The elastic and one-pion production channels from the pp interaction at four c.m. energies between 2150 and 2240 MeV are described. No evidence of formation of the narrow T(2195) meson is observed. The elastic differential cross section is measured in the range of squared four-momentum transfer ¦t¦ > 0.03 GeV2. This has been extrapolated to the forward direction where Re/Im parts of the amplitude are deduced. The one-pion final states are well described by assuming that they are dominated by Δ-production.

3 data tables
Table 1

No description provided.

Table 2

LEGENDRE POLYNOMIAL FIT USED TO EXTRAPOLATE D(SIG)/DT TO T=0 (ABOUT 30 PCT CORRECTION). QUOTED ERRORS INCLUDE BOTH EXTRAPOLATION UNCERTAINTY AND SYSTEMATIC ERRORS.

Table 3

No description provided.


SEARCH FOR THE S MESON IN ANTI-PROTON PROTON INTERACTIONS

Fickinger, W. ; Marino, R. ; Robinson, D.K. ; et al.
Phys.Rev.D 34 (1986) 3332-3342, 1986.
Inspire Record 239036 DOI 10.17182/hepdata.26472

The interaction between antiprotons and protons has been studied in the range 1910 to 1990 MeV center-of-mass energy in a drift-chamber experiment at the Brookhaven Alternating Gradient Synchrotron. The total cross section has been determined at eleven different incident momenta, and the elastic cross section between 8 and 30 deg in the laboratory has been measured with an energy resolution of about 5 MeV. The cross section for annihilation into charged mesons has also been measured, with the same resolution. There is no evidence in any of these channels for the existence of a narrow resonance.

3 data tables
Table 1

Data are for total sample with nuclear physics calculation as described in the paper.

Table 2

Partial elastic cross sections.

Table 3

Partial annihilation cross sections.


INCLUSIVE gamma PRODUCTION IN anti-p p INTERACTIONS AT 12-GeV/c

Chakrabarti, S. ; Banerjee, S. ; Ganguli, S.N. ; et al.
Z.Phys.C 27 (1985) 1, 1985.
Inspire Record 202797 DOI 10.17182/hepdata.16116

The inclusive production of photons in\(\bar pp\) interactions has been studied at incident momentum of 12 GeV/c. Topological cross section has been presented and KNO distribution for\(\bar pp\) interactions has been studied. Inclusive cross section for γ production has been measured to be 149.5±8.8 mb. Bulk of these photons come from π0 decays whose cross section has been evaluated independently to be 60.4±7.9 mb. Signals of η and ω have been seen in γγ and π+π-π0 decay modes and their inclusive cross sections have been estimated to be 14.9±8.8 mb and 14.6±7.0 mb respectively. Results on average multiplicities of γ and two particle correlation parameters are presented. Neutral pions seem to be more strongly correlated than the charged pions. The inclusive distributions of the Feynmanx andpT/2 of the photons are compared with expectation from charged pions on the basis of charge independence. Energy dependence of the normalised invariant distributions has been studied. The distribution of the scaling variablez of photons ine+e− and\(\bar pp\) interactions has been compared.

8 data tables
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Pion Production without Annihilation in Antiproton-Proton Interactions at 3.6 GeV/c

Dehne, H.C. ; Lohrmann, E. ; Raubold, E. ; et al.
Phys.Rev. 136 (1964) B843-B851, 1964.
Inspire Record 944966 DOI 10.17182/hepdata.528

Interactions of antiprotons were studied at a momentum of 3.6 GeV/c in a hydrogen bubble chamber. Particular attention was paid to single and multiple pion production without annihilation. Cross sections for the various pion-production channels are given. The total cross section for pion production without annihilation and not including strange-particle production is 18.6−3.3+2.4 mb. Single pion production is found to agree with the predictions of the one-pion-exchange model for small values of the four-momentum transfer. Double pion production in the reaction p¯p→pp¯π+π− agrees with the one-pion-exchange model for all values of the four-momentum transfer, if all possible diagrams are taken into account. The main contribution comes from events where a 32−32 pion-nucleon isobar-anti-isobar pair is produced. For these events the Treiman-Yang angular distribution and the decay angular distributions of the isobars are also in agreement with the one-pion-exchange model.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


STUDY OF anti-p p ELASTIC SCATTERING AT 22.4-GeV/c

The Dubna-Alma Ata-Kosice-Moscow-Prague-Sofiya-Helsinki collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
Sov.J.Nucl.Phys. 44 (1986) 969, 1986.
Inspire Record 222984 DOI 10.17182/hepdata.39005

None

3 data tables
Table 2

INTEGRATED D(SIG)/D(T).

Table 3

OBTAINED FROM FIT D(SIG)/D(T)=A*EXP(B*T+C*T**2) IN 0.05 < -T < 0.3.


Precision measurements of anti-proton proton forward elastic scattering parameters in the 3.7-GeV/c to 6.2-GeV/c region

The E760 collaboration Armstrong, T.A. ; Bettoni, D. ; Bharadwaj, V. ; et al.
Phys.Lett.B 385 (1996) 479-486, 1996.
Inspire Record 431921 DOI 10.17182/hepdata.28348

Differential cross sections for p p elastic scattering have been measured for very small momentum transfers at six different incident antiproton momenta in the range 3.7 to 6.2 GeV/c by the detection of recoil protons at scattering angles close to 90°. Forward scattering parameters σ T , b , and ϱ have been determined. For the ϱ-parameter, up to an order of magnitude higher level of precision has been achieved compared to that in earlier experiments. It is found that existing dispersion theory predictions are in disagreement with our results for the ϱ-parameter.

9 data tables
Table 1

Results of the SIG(T)-free analysis. Errors include systematic uncertainties.

Table 2

Results of the SIG(T)-fixed analysis. Errors include systematic uncertainties.

Table 3

CT values of the total cross section from the SIG(T)-free analysis. Errors include systematic uncertainties.

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