Angular Dependence
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MEASUREMENT OF PI- P ---> PI0 PI0 N AT 25-GEV/C

Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.
Nucl.Phys.B 201 (1982) 197-204, 1982.
Inspire Record 181089 DOI 10.17182/hepdata.17634

The reaction π − p→ π 0 π 0 n has been measured with a 648 channel hodoscope spectrometer for the detection of the four γ's from the π 0 decays. The π 0 π 0 D-wave is fully compatible with the f 0 contribution as it is determined in high-statistics π + π − experiments. The magnitude of the π 0 π 0 S-wave and the cosinus of its phase angle (relative to the known D-wave) are determined from fits to the π 0 π 0 angular distributions. Argand diagrams for the I = 0 amplitude S 0 are given for the range 1000 to 1500 MeV/ c 2 . Two solutions exist. One exceeds the unitarity limit above 1200 MeV/ c 2 . The other remains within the unitarity limit and is nearly elastic up to 1450 MeV/ c 2 . It indicates an S 0 wave resonance around 1300 MeV/ c 2 .

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Angular Dependence of the Yield of Cumulative Protons Produced in $\gamma$ a Interactions at $e (\gamma$) Max = 4.5-{GeV}

Alanakian, K.V. ; Amarian, M.D. ; Demirchyan, R.A. ; et al.
Sov.J.Nucl.Phys. 37 (1983) 385, 1983.
Inspire Record 180824 DOI 10.17182/hepdata.17713

None

1 data table
Table 1

No description provided.


Measurement of $e^+ e^- \to \mu^+ \mu^-$ Charge Asymmetry

Adeva, B. ; Barber, D.P. ; Becker, U. ; et al.
Phys.Rev.Lett. 48 (1982) 1701, 1982.
Inspire Record 177308 DOI 10.17182/hepdata.3116

The measurement of the nonelectromagnetic forward-backward charge asymmetry in the reaction e+e−→μ+μ− at s∼34.6 GeV and in the angular region 0<|cosθ|<0.8 is reported. With a systematic error less than 1%, we observe an asymmetry of (-8.1±2.1)%. This is in agreement with the standard electroweak theory prediction of (-7.6±0.6)%. The weak-current coupling constants are also reported.

4 data tables
Table 1

SEE PRL 55, 665 FOR DISTRIBUTIONS AT 34.6 GEV AND ABOVE.

Table 2

SEE PRL 55, 665 FOR CROSS SECTION VALUES AND FORWARD BACKWARD ASYMMETRY.

Table 3

No description provided.

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CORRELATIONS IN HADRON - NUCLEAR INTERACTIONS ACCOMPANIED BY CUMULATIVE PROTON EMISSION

Lyubimov, V.B. ; Solovev, M.I. ; Suleimanov, M.K. ;
JINR-P1-82-363, 1982.
Inspire Record 179427 DOI 10.17182/hepdata.9649

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


rivet Analysis
Analysis of the Energy Weighted Angular Correlations in Hadronic $e^+ e^-$ Annihilations at 22-{GeV} and 34-{GeV}

The CELLO collaboration Behrend, H.J. ; Chen, C. ; Fenner, H. ; et al.
Z.Phys.C 14 (1982) 95, 1982.
Inspire Record 12010 DOI 10.17182/hepdata.16413

Measurements of energy weighted angular correlations in electron positron annihilations at c.m. energies of 22 GeV and 34 GeV are presented.

4 data tables
Table 1

ENERGY-ENERGY CORRELATIONS FOR FINAL STATE PARTICLES.

Table 2

ENERGY-ENERGY CORRELATIONS FOR PRIMORDIAL HADRONS.

Table 3

ASSYMETRY IN ENERGY CORRELATIONS FOR FINAL STATE PARTICLES.

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The Influence of Fragmentation Models on the Determination of the Strong Coupling Constant in $e^+ e^-$ Annihilation Into Hadrons

The CELLO collaboration Behrend, H.J. ; Chen, C. ; Fenner, H. ; et al.
Nucl.Phys.B 218 (1983) 269-288, 1983.
Inspire Record 179447 DOI 10.17182/hepdata.8172

Hadronic events obtained with the CELLO detector at PETRA were compared with first-order QCD predictions using two different models for the fragmentation of quarks and gluons, the Hoyer model and the Lund model. Both models are in reasonable agreement with the data, although they do not completely reproduce the details of many distributions. Several methods have been applied to determine the strong coupling constant α S . Although within one model the value of α S varies by 20% among the different methods, the values determined using the Lund model are 30% or more larger (depending on the method used) than the values determined with the Hoyer model. Our results using the Hoyer model are in agreement with previous results based on this approach.

3 data tables
Table 1

DATA CORRECTED WITH HOYER MODEL (ALPHA-S=0.15).

Table 2

DATA CORRECTED WITH LUND MODEL (ALPHA-S=0.25).

Table 3

No description provided.


STUDY OF PROTON DIFFRACTIVE EXCITATION PROCESSES IN REACTION K+ p ---> K+ p pi+ pi- AT 32-GeV/c

The Soviet-CERN collaboration Chliapnikov, P.V. ; Falaleev, V.P. ; Garuchava, Z.Sh. ; et al.
Sov.J.Nucl.Phys. 38 (1983) 235, 1983.
Inspire Record 183145 DOI 10.17182/hepdata.41204

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Comparison of Meson Jet Behavior in $\pi^- p$ Collisions at 40-{GeV}/$c$ With the Data on $e^+ e^-$ Annihilation

Grishin, V.G. ; Didenko, L.A. ; Kanarek, T. ; et al.
Sov.J.Nucl.Phys. 38 (1983) 581, 1983.
Inspire Record 183320 DOI 10.17182/hepdata.39047

None

11 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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DIFFRACTIVE PRODUCTION OF A NARROW BARYON IN NEUTRON CARBON INTERACTIONS

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.
Dubna Jinr - 83-602 (83,REC.NOV.) 6p, 1983.
Inspire Record 196394 DOI 10.17182/hepdata.39600

None

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Electroweak Effects in $e^+ e^- \to \mu^+ \mu^-$ at 29-{GeV}

Fernandez, E. ; Ford, William T. ; Read, Alexander L. ; et al.
Phys.Rev.Lett. 50 (1983) 1238, 1983.
Inspire Record 188749 DOI 10.17182/hepdata.20560

A measurement of the cross section for production of collinear muon pairs based upon a sample of about 3000 events observed in the MAC detector at the storage ring PEP is presented. From the angular asymmetry Aμμ=0.076±0.018 the axial-vector weak neutral coupling is found to be given by gAegAμ=0.31±0.08.

2 data tables
Table 1

Data on non-collinearity and angular distribution.

Table 2

Asymmetry measurement based on extrapolation of number of events to 4 PI acceptance.