A Measurement of Sigma(tot) (e+ e- ---> Hadrons) for CM Energies Between 12.0-GeV and 36.7-GeV

The ration R = σ (e + e − → hadrons) σ μμ was measured between 12.0 and 36.7 GeV c.m. energy W with a precision of typically ± 5.2%. R is found to be constant with an average R = 4.01 ± 0.03 (stat) ± (syst.) for W ⩾ 14 GeV. Quarks are found to be point-like, the mass parameter describing a possible quark form-factor being larger than 186 GeV. Fits including QCD corrections and a weak neutral-current contribution are presented.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
HADRON: MULTIPLE PRODUCTION
MULTIPLE PRODUCTION: HADRON
HADRON: ELECTROPRODUCTION
ELECTROPRODUCTION: HADRON
TOTAL CROSS SECTION: RATIO
RATIO: TOTAL CROSS SECTION

References(30)

Figures(0)

Properties of Hadron Final States in e+ e- Annihilation at 13-GeV and 17-GeV Center-Of-Mass Energies

TASSO

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 83 (1979) 261-266
•
DOI:
- 10.1016/0370-2693(79)90699-3

E+ e- Annihilation at High-Energies and Search for the t-Quark Continuum Contribution

TASSO

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Z.Phys.C 4 (1980) 87
•
DOI:
- 10.1007/BF01554391

Pattern Recognition in Layered Track Chambers Using a Tree Algorithm

D.G. Cassel
(
- DESY
)
,
H. Kowalski
(
- DESY
)

- Nucl.Instrum.Meth. 185 (1981) 235,
- Nucl. Instrum. Methods 185 ( 1981) 235-251 and Hamburg Desy - DESY 80-107 (80,REC.NOV.) 48p
•
DOI:
- 10.1016/0029-554X(81)91217-9

High $p_T$ Hadron Production in Photon - Photon Collisions

TASSO

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 107 (1981) 290-296
•
DOI:
- 10.1016/0370-2693(81)90833-9

Quantum Chromodynamics and Jets in e+ e-

P. Hoyer
(
- Nordita
)
,
P. Osland
(
- Nordita
)
,
H.G. Sander
(
- Aachen, Tech. Hochsch.
)
,
T.F. Walsh
(
- DESY
)
,
P.M. Zerwas
(
- Aachen, Tech. Hochsch. and
- DESY
)

- Nucl.Phys.B 161 (1979) 349-372
•
DOI:
- 10.1016/0550-3213(79)90217-7

A Parametrization of the Properties of Quark Jets

R.D. Field
(
- Caltech
)
,
R.P. Feynman
(
- Caltech
)

- Nucl.Phys.B 136 (1978) 1,
•
DOI:
- 10.1016/0550-3213(78)90015-9

Comparison of e+ e- Annihilation with QCD and Determination of the Strong Coupling Constant

TASSO

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 94 (1980) 437-443
•
DOI:
- 10.1016/0370-2693(80)90914-4

Distributions in the Process e+ e- ---> mu+ mu- (gamma)

Frits A. Berends
(
- DESY and
- Leiden U.
)
,
R. Kleiss
(
- DESY and
- Leiden U.
)

- Nucl.Phys.B 177 (1981) 237-262
•
DOI:
- 10.1016/0550-3213(81)90390-4

Initial State Radiation for e+ e- Annihilation Into Jets

Frits A. Berends
(
- DESY and
- Leiden U.
)
,
R. Kleiss
(
- DESY and
- Leiden U.
)

- Nucl.Phys.B 178 (1981) 141-150
•
DOI:
- 10.1016/0550-3213(81)90500-9

Energy Scan for Narrow States in $e^+ e^-$ Annihilation at Center-of-mass Energies Between 29.90-{GeV} and 31.46-{GeV}

TASSO

Collaboration

•

R. Brandelik
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 88 (1979) 199-202
•
DOI:
- 10.1016/0370-2693(79)90145-X

- Phys.Lett.B 91 364

Experimental evidence on QCD

P. Soding
(
- DESY
)
,
G. Wolf
(
- DESY
)

- Ann.Rev.Nucl.Part.Sci. 31 (1981) 231-293
•
DOI:
- 10.1146/annurev.ns.31.120181.001311

Higher Order QCD Corrections in e+ e- Annihilation

Michael Dine
(
- SLAC
)
,
J.R. Sapirstein
(
- SLAC
)

- Phys.Rev.Lett. 43 (1979) 668
•
DOI:
- 10.1103/PhysRevLett.43.668

Higher Order Corrections to Sigma-t (e+ e- ---> Hadrons) in Quantum Chromodynamics

- Phys.Lett.B 85 (1979) 277-279
•
DOI:
- 10.1016/0370-2693(79)90596-3

An Analytic Calculation of Higher Order Quantum Chromodynamic Corrections in e+ e- Annihilation

- Phys.Rev.Lett. 44 (1980) 560,
- Phys.Rev.Lett.44 (1980) 560-564 and Calif Univ - UCSD-10P10-206 (REC.JAN 80) 13p
•
DOI:
- 10.1103/PhysRevLett.44.560

Observation of a Charge Asymmetry in $e^+ e^- \to \mu^+ \mu^-$

JADE

Collaboration

•

W. Bartel
(
- DESY
)

et al.

- Phys.Lett.B 108 (1982) 140-144
•
DOI:
- 10.1016/0370-2693(82)91160-1

QCD Corrected Forward Backward Asymmetry of Quark Jets in e+ e- Annihilation

J. Jersak
(
- Aachen, Tech. Hochsch.
)
,
E. Laermann
(
- Aachen, Tech. Hochsch.
)
,
P.M. Zerwas
(
- Aachen, Tech. Hochsch.
)

- Phys.Lett.B 98 (1981) 363-366,
- Preprint - JERSAK, J. (79,REC.JAN 80) 8p,
- Phys.Lett.B98 (1981) 363-366 and Preprint - JERSAK, J. (79,REC.JAN. 80) 8p
•
DOI:
- 10.1016/0370-2693(81)90926-6