Ivanchenko, I.M.
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rivet Analysis
Pion, Kaon and Proton Cross-sections in $e^+ e^-$ Annihilation at 34-{GeV} and 44-{GeV} Center-of-mass Energy

The TASSO collaboration Braunschweig, W. ; Gerhards, R. ; Kirschfink, F.J. ; et al.
Z.Phys.C 42 (1989) 189, 1989.
Inspire Record 267755 DOI 10.17182/hepdata.1500

The inclusive production of π± andK± mesons and of protons and antiprotons ine+e− annihilations has been measured at 34 GeV and 44 G

18 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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INCLUSIVE AND MULTIPLE CHARACTERISTICS OF CUMULATIVE PROTONS IN NUCLEUS-NUCLEUS INTERACTIONS AT 4.2-GeV/c PER NUCLEON

Gulkanian, G.R. ; Ravinovich, I.M. ; Cheplakov, A.P. ;
Sov.J.Nucl.Phys. 50 (1989) 259, 1989.
Inspire Record 267866 DOI 10.17182/hepdata.9447

None

11 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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A Measurement of Muon Pair Production in $e^+ e^-$ Annihilation at Center-of-mass Energies 35-{GeV} $\le \sqrt{s} \le$ 46.8-{GeV}

The TASSO collaboration Braunschweig, W. ; Gerhards, R. ; Kirschfink, F.J. ; et al.
Z.Phys.C 40 (1988) 163-170, 1988.
Inspire Record 261668 DOI 10.17182/hepdata.1897

The reactione+e−→µ+µ− has been studied at centre of mass energies between 35.0 and 46.8 GeV using the TASSO detector at PETRA. We present measurements of the forward-backward charge asymmetry (Aμμ) and cross section σμμ for this reaction at three energies. At 35.0 GeV we obtain a cross section relative to the QED prediction ofRμμ=σμμ/σo=0.932±0.018±0.044 andAμμ=(−10.6−2.3+2.2±0.5)%. At 38.3 GeV we findRμμ=0.951±0.072−0.057+0.063 andAμμ=(+1.7−8.6+8.5±0.5)%. At 43.6 GeV we measureRμμ=0.921±0.037±0.055 andAμμ=(−17.6−4.3+4.4±0.5)%. Our results are in good agreement with the predictions of the standard model. Including previous TASSO data we present improved determinations of muonic electroweak parameters. We also report on lower limits of possible contributions from contact interactions.

8 data tables
Table 1

If only one error is given, this is the sum of the statistical and systematic errors in quadrature.

Table 2

The data are corrected for 'reduced QED' radiative corrections. Statistical errors only.

Table 3

The data are corrected for 'reduced QED' radiative corrections. Statistical errors only.

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Analysis of Multi - Jet Final States in $e^+ e^-$ Annihilation

The TASSO collaboration Braunschweig, W. ; Gerhards, R. ; Kirschfink, F.J. ; et al.
Phys.Lett.B 214 (1988) 286-294, 1988.
Inspire Record 261486 DOI 10.17182/hepdata.29878

Data accumulated by the TASSO detector across the whole range of energies spanned at PETRA, 12⩽ s ⩽46.8 GeV , have been analysed in terms of cluster algorithms. Using parameters optimised at 35 GeV CM energy, three perturbative QCD+fragmentation models were compared with the data. The O( α s 2 ) model gives too few 4,5- cluster events, implying that higher order QCD contributions are required to describe the data. The parton cascade model, incorporating many orders in perturbation theory, gives a better description of the rates of ⩾ 4 clusters, but shows a lack of hard gluon emission by giving too few 3-, and too many 2-cluster events. When hard gluon emission is taken into account, by the cascade model incorporating the O( α s ) matrix element, all cluster rates are reproduced well. All the models describe the trend of the evolution of the cluster rates between 〈 s 〉 = 14 and 43.8 GeV. We find that the rate of 3-jet events seen in the data decreases as s increases in a manner consistent with the Q 2 dependence of α s as predicted by QCD.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

Corrected 3 jet rate with YCUT=0.08.


LAMBDA (1520) PRODUCTION IN NEUTRON - NUCLEON INTERACTIONS AT approximately 40-GeV NEUTRON ENERGY

Krastev, V.R. ; Aleev, A.N. ; Arefev, V.A. ; et al.
JINR-P1-88-31, 1988.
Inspire Record 261871 DOI 10.17182/hepdata.9450

None

6 data tables
Table 1

AVERAGE OVER ALL TARGETS.

Table 2

No description provided.

Table 3

No description provided.

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DIFFRACTIVE DISSOCIATION OF NEUTRONS IN LAMBDA0 K0 ON HYDROGEN AT ABOUT 40-GeV ENERGY

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.
JINR-P1-88-51, 1988.
Inspire Record 261900 DOI 10.17182/hepdata.38806

None

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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THE CROSS-SECTIONS OF PION PRODUCTION AT AN ANGLE OF 159-degrees FOR INTERACTIONS OF PROTONS HAVING AN ENERGY FROM 15-GeV TO 61-GeV CARBON NUCLEI

Belyaev, I.M. ; Gavrishchuk, O.P. ; Zarubin, P.I. ; et al.
JINR-P1-88-34, 1988.
Inspire Record 261911 DOI 10.17182/hepdata.38834

None

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Determination of the fraction of multiple processes in d d interactions at 12-GeV/c.

Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
Sov.J.Nucl.Phys. 48 (1988) 1050-1053, 1988.
Inspire Record 261901 DOI 10.17182/hepdata.38864

None

1 data table
Table 1

No description provided.


Observation of the Decay $\rho \to \pi^+ \pi^- \gamma$. (In Russian)

Vasserman, I.B. ; Golubev, V.B. ; Dolinsky, S.I. ; et al.
Sov.J.Nucl.Phys. 47 (1988) 1035-1037, 1988.
Inspire Record 272215 DOI 10.17182/hepdata.37130

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


THE STUDY OF INCLUSIVE CHARACTERISTICS OF anti-d d INTERACTIONS AT 12-GeV/c

Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
JINR-P1-87-849, 1987.
Inspire Record 253758 DOI 10.17182/hepdata.9416

None

8 data tables
Table 1

THE BETTER FIT FOR PI- AND BARIONBAR IS THE SUM OF TWO EXPONENT: A*EXP(-B1*PT**2)+D*EXP(-B2*PT**2).FOR PI- B1=30+-4 AND B2=6.3+-.3 .FOR BARIONBAR B1=46+-18 AND B2=3.9+-.5.

Table 2

No description provided.

Table 3

No description provided.

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