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TOPOLOGY AND CHARGED MULTIPLICITY OF HADRONIC EVENTS IN THE ENERGY REGION OF THE UPSILON AND UPSILON' RESONANCES. (IN GERMAN)

Schwarz, Andreas S. ;
Hamburg Desy - INTERNAL REP. LENA-81-03 (81,REC.SEP.) 178p, 1981.
Inspire Record 171276 DOI 10.17182/hepdata.43836

None

2 data tables
Table 1

OBSERVED, UNCORRECTED, AVERAGE VALUES FOR SPHERICITY AND THRUST.

Table 2

AVERAGE CHARGED MULTIPLICITY - SEE B. NICZYPORUK ET AL., ZP C9, 1 (1981).


Search for Narrow Resonances in $e^+ e^-$ Annihilation at $c$.m. Energies Between 33.0-{GeV} and 36.72-{GeV}

The JADE collaboration Bartel, W. ; Cords, D. ; Dittmann, P. ; et al.
Phys.Lett.B 100 (1981) 364-366, 1981.
Inspire Record 164319 DOI 10.17182/hepdata.45224

A search for narrow resonances in e + e − annihilation between 33.00 and 36.72 GeV is reported. No evidence is found for the existence of such states. The 90% confidence upper limit on the integrated resonance cross section is determined to be 28 nb MeV, a value significantly below that expected for the lowest t t bound state.

2 data tables
Table 1

AVERAGE R VALUE THROUGHOUT ENERGY RANGE. SYSTEMATIC ERROR IS CONSERVATIVE AND WILL BE IMPROVED.

Table 2

R VALUES AT 20 MEV STEPS. DATA TAKEN FROM TABLE IN THE PREPRINT.


SMALL MOMENTUM TRANSFER K- p CHARGE EXCHANGE SCATTERING AT 30-GeV/c

The Serpukhov-Brussels-Annecy(LAPP) collaboration Binon, F. ; Lagnaux, J.P. ; Roosen, R. ; et al.
Nuovo Cim.A 64 (1981) 89-100, 1981.
Inspire Record 164179 DOI 10.17182/hepdata.49654

The\(K^ -p \to \bar K^0 n\) charge exchange differential cross-section has been measured at 30 GeV/c with high statistical accuracy and high angular resolution. The experiment was made at the IHEP 70 GeV accelerator, by using a hodoscope hadron calorimeter to detect KL0. The cross-section shows a dip at small |t|, which indicates a dominance of spin-flip amplitudes in ρ and A2 exchanges in thet-channel.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Correlations of Hadrons in Nuclear Reactions With Production of Cumulative Protons Induced by $\pi^-$ Mesons With the Momentum of 6-{GeV}/c

Bayukov, Yu.D. ; Vlasov, A.V. ; Gavrilov, V.B. ; et al.
Sov.J.Nucl.Phys. 34 (1981) 840-841, 1981.
Inspire Record 173073 DOI 10.17182/hepdata.47514

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Version 2
Pion Form-factor Measurement in the Reaction $e^+ e^- \to \pi^+ \pi^-$ for Energies Within the Range From 0.4-{GeV} to 0.46-{GeV}

Vasserman, I.B. ; Ivanov, P.M. ; Kezerashvili, G.Ya. ; et al.
Yad.Fiz. 33 (1981) 709-714, 1981.
Inspire Record 167191 DOI 10.17182/hepdata.18823

None

1 data table
Table 1

Measured value of the total E+ E- --> PI+ PI- cross section


The Effective Energy Dependence of the Charged Particle's Multiplicity in $P / \pi^+ / K^+$ Interactions on Protons at 147 GeV/c

Brick, D. ; Rudnicka, H. ; Shapiro, A.M. ; et al.
Phys.Lett.B 103 (1981) 241-246, 1981.
Inspire Record 170358 DOI 10.17182/hepdata.6707

The energy dependence of the average of the charged multiplicity and its dispersion in π + /K + /p interaction on protons at 147 GeV/ c is found to be the same as in e + e − annihilations if an “effective energy” variable is used instead of the total energy. The effective energy S eff is defined as the invariant mass of all secondaries left after the two leading particles have been removed. Fitting the expression aS eff b to the average charge multiplicity 〈 n ch 〉, we find the power b to be in good agreement with the value of 0.25 predicted by Fermi's statistical model and by Landau's hydrodynamical model.

6 data tables
Table 1

BINS IN WEFF SELECTED SO AS TO YIELD 200 EVENTS IN EACH BIN.

Table 2

200 EVENTS IN EACH BIN IN WEFF.

Table 3

50 EVENTS IN EACH BIN IN WEFF.

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MEASUREMENT OF THE PION FORM-FACTOR NEAR THE THRESHOLD OF THE REACTION e+ e- ---> pi+ pi- WITH A TIME-OF-FLIGHT DETECTOR

Vasserman, I.B. ; Ivanov, P.M. ; Kezerashvili, G.Ya. ; et al.
SLAC-TRANS-0196, 1981.
Inspire Record 164524 DOI 10.17182/hepdata.37120

None

1 data table
Table 1

RADIATIVE CORRECTIONS APPLIED.


CUMULATIVE PRODUCTION OF pi0 MESONS AT ANGLE OF 180-degrees IN THE pi- C ---> pi0 (180-degrees) X REACTION AT 3.8-GeV/c

Astvatsaturov, R.G. ; Arkhipov, V.V. ; Aslanian, P.Zh. ; et al.
Sov.J.Nucl.Phys. 34 (1981) 834, 1981.
Inspire Record 165265 DOI 10.17182/hepdata.39209

None

1 data table
Table 1

No description provided.


A Measurement of the Cross-Section for Four Pion Production in gamma gamma Collisions at SPEAR

Burke, D.L. ; Abrams, G.S. ; Alam, M.S. ; et al.
Phys.Lett.B 103 (1981) 153-156, 1981.
Inspire Record 165016 DOI 10.17182/hepdata.31168

We present a measurement of the cross section for the reaction e + e − → e + e − π + π − π + π − at SPEAR. This channel is found to be large and dominated by the process γγ → ϱ 0 ϱ 0 → π + π − π + π − . The cross section, which is small just above the four-pion threshold, exhibits a large enhancement near the ϱ 0 ϱ 0 threshold.

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (THE QUOTED ERRORS INCLUDE VARIOUS SYSTEMATIC ERRORS ADDED QUADRATICALLY).


Evidence for Planar Events and a Forward Double Jet Structure in Deep Inelastic Muon Scattering

The European Muon collaboration Aubert, J.J. ; Bassompierre, G. ; Becks, K.H. ; et al.
Phys.Lett.B 100 (1981) 433-438, 1981.
Inspire Record 164536 DOI 10.17182/hepdata.31213

The final states of charged hadrons produced in 280 GeV μp scattering are analysed with respect to their planarity and jet structure. Distributions of p ⊥ 2 in and p ⊥ out 2 are presented. A two jet structure in the forward hemisphere is observed for events with high p ⊥ tracks are predicted by QCD models.

2 data tables
Table 1

PTIN**2 is the sum of the PTIN components squared.

Table 2

PTOUT**2 is the sum of the PTOUT components squared.