Dalton, M.M.
L3
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Measurement of hadron and lepton pair production at 130-GeV < s**(1/2) < 140-GeV at LEP

The L3 collaboration Acciarri, M. ; Adam, A. ; Adriani, O. ; et al.
Phys.Lett.B 370 (1996) 195-210, 1996.
Inspire Record 404604 DOI 10.17182/hepdata.48014

We report on the first measurements of e + e − annihilations into hadrons and lepton pairs at centre-of-mass energies between 130 GeV and 140 GeV. In a total luminosity of 5 pb −1 collected with the L3 detector at LEP we select 1577 hadronic and 401 lepton-pair events. The measured cross sections and leptonic forward-backward asymmetries agree well with the Standard Model predictions.

7 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurement of energetic single photon production at LEP

The L3 collaboration Acciarri, M. ; Adam, A. ; Adriani, O. ; et al.
Phys.Lett.B 346 (1995) 190-198, 1995.
Inspire Record 382382 DOI 10.17182/hepdata.48260

We describe the sample of energetic single-photon events ( E γ > 15 GeV) collected by L3 in the 1991–1993 LEP runs. The event distributions agree with expectations from the Standard Model. The data are used to constrain the ZZ γ coupling and to set an upper limit of 4.1 × 10 −6 , μ B (90% C.L.) on the the magnetic moment of the τ neutrino.

2 data tables
Table 1

The number of events expected from Standard Model is 8.2. Here UNSPEC is 'invisible' particle.

Table 2

90 PCT C.L. limit on an anomalous magnetic moment for tau-neutrino from '1GAMMA + nothing' events. Magnetic moment in Bohr magnetons.