## L3 results for 1998 winter conferences

#### For published results the links point to papers and coloured versions of figures Preliminary results are referred to by L3 internal notes or paper drafts

##### Status March 23
Title of abstract Reference Plots

### Two-photon physics

Lepton Pair Production in $\gamma \gamma$ Collisions at LEP L3 paper 113
Photon Structure Functions and Azimuthal Correlations of Lepton Pairs Produced in Tagged $\gamma \gamma$ Collisions at LEP1 L3 Note 2193
Study of the Photon Structure Function $F_{2}^{\gamma}$ at LEP1 L3 Note 2189
Cross-section of Hadron Production in $\gamma \gamma$ Collisions at LEP at $\sqrt s= 183$ GeV L3 paper 116
Note on 183 data in preparation
Measurement of the Inclusive Charm Production in $\gamma \gamma$ Collisions at LEP with the L3 Detector L3 Note 2118
L3 Note 2137
Note on 183 data in preparation
Measurement of the $\eta ^`$(958) Formation in Two-Photon Collisions at LEP L3 paper 133 figures: fig 1, fig 2, fig 3, fig 4, fig 5, fig 6, fig 7.
The $K^{0}_{s} K^{0}_{s}$ final state in Two-Photon Collisions L3 paper 85
Note on 183 data in preparation
Charmonium Resonance Formation in $\gamma \gamma$ Collisions at LEP with the L3 Detector L3 paper 67
Note on 183 data in preparation

### Tau physics

Measurement of the anomalous magnetic and electric dipole moments of the tau lepton
Measurement of the Weak Dipole Moments of the Tau Lepton L3 paper 138 figures: 1a, 2, 3a, 3b, 4a, 4b, 5,
Measurement of the Tau Polarisation Asymmetry at the Z L3 paper 140 figures: 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3, 4, 5, 6, 7,
Measurement of charged current parameters in $\tau$ decays with the L3 detector at LEP

### Heavy Flavour

Measurement of $R_b$ with the L3 Detector L3 note 2114
Measurement of the $B^{0}\bar{B}^{0}$ Mixing Parameter and the $Z\rightarrow b\bar{b}$ Forward-Backward Asymmetry L3 note 2112 L3 note 2113
Measurements of the $B^0$ Meson Oscillation Frequency with the L3 Detector L3 paper 142 figures: 1, 2, 3, 4,
Inclusive Production of Charmonium States in Hadronic Z Decays L3 paper 114 figures: fig 1 fig 2 fig 3 fig 4 fig 5 fig 6 fig 7
Upsilon Production in Z Decays L3 paper 126
Measurement of the Average Lifetime of b hadrons L3 paper 134 figures: fig 1, fig 2, fig 3, fig 4, fig 5, fig 6,
Measurement of the $B^0_d$ Meson Lifetime using the Decay ${\bar B^0_d \to D^{*+}\, X\, \ell^- \bar \nu}$
Measurement of $D^{-}_{s} \rightarrow \tau^- {\bar{\nu}}_\tau$ and a new limit for $B^- \rightarrow \tau^- {\bar{\nu}}_\tau$ L3 paper 109 figures: fig1 fig2 fig3 fig4 fig5 fig6 fig7 fig8

### QCD and hadron physics

QCD Studies and Determination of $\alpha_s$ in $e^+e^-$ collisions up to 183 GeV L3 note 2228 (rev) figures 1, 2, 3a, 3b, 4, 5, 6, 7
Local multiplicity fluctuations in hadronic Z decays L3 paper 137 figures: 1a, 1b, 1c, 1d, 2, 3, 4, 5, 6,
Angular multiplicity fluctuations in hadronic Z decays and comparison to QCD models and analytical calculations L3 paper 139 figures: 1, 2, 3, 4, 5, 6,
Search for oscillations in the ratio of factorial to cumulant moments in Z decays at LEP L3 note 2124
$\rm K^0_s$ and $\rm \Lambda$ production in quark and gluon jets at LEP L3 paper 118

### Lineshape / Fermionpairs

Precise Determination of Electroweak Parameters with the L3 Detector at LEP
Measurement of the weak mixing angle from quark charge asymmetry in hadronic Z decays L3 note 2233
Measurement of Hadron and Lepton-Pair Production above the Z Resonance L3 note 2227 figures 1, 2, 3a, 3b, 3c, 3d, 4, 5, 6, 7, 8, 9, all cross sections
Limits on an Additional Heavy Gauge Boson Z' from the L3 Experiment L3 note 2234
Search for R-parity breaking sneutrino exchange at LEP L3 note 2235 figures: 3, 4
Search for New Physics Phenomena in Fermion-Pair Production at LEP L3 note 2229 figures: 2a, 2b, 2c, 2d, 3a, 3b, 3c, 3d, 4, 5
Measurement of Radiative Bhabha Scattering and Quasi-Real Compton Scattering at LEP L3 draft Figures: 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Determination of the Number of Light Neutrino Species from Single Photon Production at LEP L3 paper 141 figures: 1, 2, 3, 4, 4(coloured4),

### W Physics

Preliminary Results on the Measurement of W-Pair Production in e+e- Interactions at sqrt{S} =183 GeV L3 note 2236 figures Cross section, Mass qqen, Mass qqmn, Mass qqtn, Mass qqln, Mass qqqq, Mass qqff, Mass/Width, Track mult., XP, Rapidity
Measurement of $W \rightarrow cs$ and direct determination of $V_{cs}$ L3 note 2232
Production of Single W Bosons at LEP and anomalous WW$\gamma$ Couplings L3 note 2239 figures 1a 1b 1c 1d 2a 2b 3, 4a, 4b, 5, 6a, 6b, Event xy, Event xz

### Searches for exotica and new physics

Search for Excited Leptons at LEP at a Center-of-mass Energy of 183 GeV L3 note 2217 Figures: 5, 7
Search for Sequential Charged and Neutral Heavy Leptons in $e^+ e^-$ Annihilation at 183 GeV L3 note 2219
Study of hard-photon production at $\sqrt{s} = 183$~GeV at LEP figures 183 GeV acol, cos theta, cross section
Limits on anomalous ZZ$\gamma$ and Z$\gamma\gamma$ couplings L3 note 2220 figures 1, 2, 3, 4, 5, 6, 7a, 7b, Candidate qqgamma

### Higgs search

Search for neutral Higgs boson production through the process $e^+e^-\rightarrow ZH$ at LEP 2 L3 note 2237 Additional figure: Mass distribution of 10 significant candidates
Search for pair production of neutral Higgs bosons at LEP 2

### SUSY search

Search for Scalar Leptons, Charginos and Neutralinos in $\mathrm{e^+e^-}$ Collisions at $sqrt{s} = 183$ GeV L3 note 2231 figures 1a, 1b, 1c, 2, 3, 4a, 4b, 5a, 5b, 6, 7, 8a, 8b
Single and Multi-Photon Events with Missing Energy in $e^+e^-$ Collisions at $\sqrt{s} =183$~GeV L3 note 2230 Figures: 1a, 1b, 2a, 2b, 3, 4, 5, 6, 7, 8, 9,
Search for Stop and Sbottom Decays with the L3 Detector at $sqrt{s} = 183$ GeV L3 note 2238 Figures: 2, 3, 4a, 4b, 5a, 5b, 6a, 6b
Search for neutralino and chargino decay with R parity violation in $e^+e^-$ collisions at $\sqrt{s} = 161 - 183$~GeV Internal note Figures: 7, 8, 9