Limits on Spin 0 Bosons in $e^+ e^-$ Annihilation Up to 45.2-{GeV} Center-of-mass Energy - INSPIRE

DataBETA

Limits on Spin 0 Bosons in $e^+ e^-$ Annihilation Up to 45.2-{GeV} Center-of-mass Energy

CELLO

Collaboration

•

H.J. Behrend
(
- DESY
)

Feb, 1984

7 pages

Published in:

Phys.Lett.B 140 (1984) 130-136

Published: 1984

DOI:

10.1016/0370-2693(84)91063-3

PDG: Mass Limits for a Heavy Neutral Boson Coupling to

{{\mathit e}^{+}}{{\mathit e}^{-}}

Report number:

DESY-84-020

Experiments:

DESY-PETRA-CELLO

reference search26 citations

Citations per year

Abstract: (Elsevier)

We have studied the reactions e + e − → e + e − , e + e − → γγ , e + e − → μ + μ − , and e + e − → τ + τ − in the centre-of-mass (CM) energy range from 39.8 to 45.2 GeV using the CELLO detector at PETRA. Upper limits on the partial widths for new spin 0 bosons with masses both within and above the energy range covered are determined. No evidence for contributions of such new particles has been observed up to the highest PETRA energies in a model independent way. Under the assumptions of recently suggested models relating the existence of spin 0 bosons to the radiative width Γ τ of the Z 0 we exclude such bosons at the 95% confidence level for masses below the Z 0 -mass if Γ τ > 20 MeV.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ELASTIC SCATTERING
ELASTIC SCATTERING: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
ELECTRON POSITRON: EXCLUSIVE REACTION
PHOTON: ELECTROPRODUCTION
ELECTROPRODUCTION: PHOTON
MUON: ELECTROPRODUCTION

References(10)

Figures(0)

Radiative Z0 Decays: A Composite Scenario

R.D. Peccei
(
- Munich, Max Planck Inst.
)

- Phys.Lett.B 136 (1984) 121-125
•
DOI:
- 10.1016/0370-2693(84)92068-9

Composite Weak Bosons and their Radiative Decays

U. Baur
(
- Munich U. and
- Munich, Max Planck Inst.
)
,
H. Fritzsch
(
- Munich U. and
- Munich, Max Planck Inst.
)
,
H. Faissner
(
- Aachen, Tech. Hochsch.
)

- Phys.Lett.B 135 (1984) 313-318
•
DOI:
- 10.1016/0370-2693(84)90398-8

Search for Massive electron Neutrino gamma and mu Neutrino gamma Final States at the CERN Super Proton Synchrotron Collider

UA1

Collaboration

•

G. Arnison
(
- Rutherford
)

et al.

- Phys.Lett.B 135 (1984) 250-254
•
DOI:
- 10.1016/0370-2693(84)90491-X

Evidence for $Z^{0} \to e^+ e^-$ at the CERN $\bar{p} p$ Collider

UA2

Collaboration

•

P. Bagnaia
(
- CERN
)

et al.

- Phys.Lett.B 129 (1983) 130-140,
•
DOI:
- 10.1016/0370-2693(83)90744-X

CELLO: A NEW DETECTOR AT PETRA

CELLO

Collaboration

•

Mina-Jacqueline Schachter
(
- Munich, Max Planck Inst.
)

et al.

- Phys.Scripta 23 (1981) 610-622
•
DOI:
- 10.1088/0031-8949/23/4B/003

Hard photon corrections for the process $e^+ e^- \to \mu^\pm \mu^\mp$

- Nucl.Phys.B 57 (1973) 381-400,
- Nucl.Phys.B 75 (1974) 546-546 (erratum)
•
DOI:
- 10.1016/0550-3213(73)90108-9

alpha**3 Contribution to the angular asymmetry in e+ e- ---> mu+ mu-

- Nucl.Phys.B 63 (1973) 381-397
•
DOI:
- 10.1016/0550-3213(73)90153-3

Hard photon corrections for Bhabha scattering

Frits A. Berends
(
- CERN and
- Leiden U.
)
,
K.J.F. Gaemers
(
- Leiden U.
)
,
R. Gastmans
(
- CERN and
- Leuven U.
)

- Nucl.Phys.B 68 (1974) 541-550
•
DOI:
- 10.1016/0550-3213(74)90329-0

Distributions for electron-Positron Annihilation Into Two and Three Photons

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

- Nucl.Phys.B 186 (1981) 22-34
•
DOI:
- 10.1016/0550-3213(81)90090-0

Measurement of $e^+ e^- \to \tau^+ \tau^-$ at High-energy and Properties of the $\tau$ Lepton

CELLO

Collaboration

•

H.J. Behrend
(
- DESY
)

et al.

- Phys.Lett.B 114 (1982) 282-286
•
DOI:
- 10.1016/0370-2693(82)90496-8