L3 results for 1998 summer conferences

Status July 18
Number PL/PA Session Abstract Paper Plots
484 1,4 1,3,10 Preliminary Cross Section Measurements from the L3 Experiment at $\sqrt{s} = 189$ GeV *L3 note 2304 Figures: 1, 2, 3, 4, 5a, 5b, 6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d, 8a, 8b, 8c, 9d, 9a, 9b, 10, 11, 12, 13, 14, 15, 16, 17
485 1,12 1,10 Preliminary Results on New Particles Searches from the L3 Experiment at $\sqrt{s} =189$ GeV *L3 note 2309 Figures 1, 2, 3, 4, 5, 6, 7, 8, 9

Searches for Higgs bosons

486 1,12 1,10 Search for the Standard Model Higgs Boson in $e^+e^-$ Interactions at $\sqrt{s}=183$ GeV *L3 paper 145 figures: 1, 2, 3, 4, 5, 6,
487 12 10 Search for Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model in $e^+e^-$ Interactions at $\sqrt{s}$ = 130 - 183 GeV *L3 paper 148 figures: 1, 2, 3, 4, 5
488 1,12 1,10 Four-Fermion Events and Observation of Resonant ZZ Production at LEP *L3 note 2311 Figures: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
489 12 10 Search for Charged Higgs Bosons in $e^+e^-$ Collisions at Centre-of-Mass Energies between 130 and 183 GeV *L3 note 2286 Figures: 1, 2, 3, 4
491 12 10 Missing Mass Spectra in Hadronic Events from $e^+e^-$ Collisions at $\sqrt{s} = 183$ GeV and Limits on Invisible Higgs Decays *L3 note 2306 Figures: 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d 3a, 3b, 3c, 3d, 4a, 4b, 4c, 4d, 5, 6a, 6b, 7a, 7b

Searches for SUSY particles

492 12 10 Searches for Scalar Leptons in $e^+e^-$ Collisions at $\sqrt{s} = 183$ GeV *L3 note 2287 Figures: 1a, 1b, 1c, 1d, 2a, 2b, 2c, 3a, 3b, 3c
493 12,13 10,11 Search for Charginos and Neutralinos in $e^+e^-$ Collisions at $\sqrt{s} = 183$ GeV *L3 note 2288 Figures: 1a, 1b, 2, 3, 4a, 4b, 5, 6, 7, 8a, 8b
494 1,12 1,10 Single and Multi-Photons Events with Missing Energy in $e^+e^-$ Collisions at $\sqrt{s} = 183$ GeV *L3 note 2289 Figures: 1a, 1b, 2a, 2b, 3, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8
495 12 10 Searches for Scalar Top and Scalar Bottom in $e^+e^-$ Collisions at $161 GeV \leq \sqrt{s} \leq 183 GeV$ *L3 note 2290 Figures: 1, 2, 3a, 3b, 4a, 4b, 5a, 5b
496 12 10 Search for Neutralino and Chargino Decays with R Parity Violation in $e^+e^-$ Collisions at $\sqrt{s} = 161-183$ GeV *L3 note 2291 Figures: 1a, 1b, 2b, 2a, 3a, 3b, 3c, 3d, 4a, 4b, 5, 6, 7, 8

Searches for exotica and new physics

497 12 10 Search for Sequential Charged and Neutral Heavy Leptons in $e^+ e^-$ Annihilation at 183 GeV *L3 note 2293 figures: 1, 2, 3, 4, 5, 6, 7, 9, 10, 11
498 12 10 Search for Excited Leptons at LEP at a Centre-of-mass Energy of 183 GeV *L3 note 2217
499 1,12 1,10 Study of hard-photon production at $\sqrt{s} = 183$ GeV at LEP *L3 note 2269
500 1,12 1,10 Study of anomalous $ZZ\gamma$ and $Z\gamma\gamma$ couplings at LEP *L3 paper 153

W Physics

501 1 1 Measurement of W-Pair Cross Sections and W-Decay Branching Fractions at LEP *L3 note 2276 figures: 1a, 1b, 2a, 2b, 2c, 2d, 3a, 3b, 3c, 3d, 4a, 4b, 4c, 4d, 5a, 5b, 5c, 5d, 6a, 6b, 6c, 6d, 7, 8
502 1 1 Measurement of the Mass and Width of the W Boson in $e^+e^-$ Interactions at LEP *L3 note 2277 figures: 1a, 1b, 1c, 1d, 2a, 2b, 3
503 1 1 Measurement of the Triple Gauge Couplings of the W Boson at LEP *L3 note 2302 figures: 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3a, 3b, 3c, 4a, 4b, 4c, 5a, 5b, 5c, 6a, 6b, 6c
504 1,8,10 1,6,8 Measurement of $W \rightarrow cs$ and direct determination of $|V_{cs}|$ *L3 note 2232
505 1 1 Production of Single W Bosons in $e^+e^-$ Interactions at $130 GeV \leq \sqrt{s} \leq 183 GeV$ *L3 paper 150 figures: 1, 2, 3, 4, 5
506 1,4,7 1,3,5 Study of Bose-Einstein Correlations in WW events *L3 note 2268 figures: 1, 2, 3, 4, 5, 6, 7
507 1,4,7 1,3,5 Study of Charged Particle Production in Hadronic and Semileptonic WW Events *L3 note 2278 figures: 1, 2, 3, 4, 5

Lineshape / Fermion-pair production

508 1 1 Precise Determination of Electroweak Parameters with the L3 Detector at LEP no change since Jerusalem, see
LEPEWWG CERN-PPE/97-154
509 1 1 Measurement of the Effective Weak Mixing Angle in Hadronic Decays of the Z Boson *L3 note 2296
510 1 1 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
511 1,12 1,10 Limits on an Additional Heavy Gauge Boson Z' from the L3 Experiment *L3 note 2282
512 1,12 1,10 Search for R-parity Breaking Scalar Neutrino Exchange at LEP *L3 note 2235 figures: 3, 4
513 1,12 1,10 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
514 1,8 1,6 Test of CP Invariance in $Z \rightarrow \mu^+\mu^-\gamma$ decay *L3 paper 151
515 1,12 1,10 Measurement of Radiative Bhabha Scattering and Quasi-Real Compton Scattering at LEP *L3 paper 154 figures: 1a, 1b, 2a, 2b, 2c, 2d, 3, 4a, 4b, 5, 6a, 6b, 7
516 1,12,13 1,2,10,11 Determination of the Number of Light Neutrino Species from Single Photon Production at LEP *L3 paper 141 figures: 1, 2, 3, 4, 4(coloured4),

Two-photon physics

517 4,7 5 Measurement of the Inclusive Charm Production in $\gamma\gamma$ Collisions at LEP with the L3 Detector *L3 note 2283 Figures: 1, 2a, 2b, 3a, 3b, 4, 5, 6a, 6b
518 7,11 5,7 Charmonium Resonance Formation in $\gamma\gamma$ Collisions at LEP with the L3 detector *L3 note 2297 Figures: 1a, 1b, 2a, 2b, 3a, 3b
519 4,7 5 Cross section of hadron production in $\gamma\gamma$ collisions at LEP *L3 note 2280 Figures: 1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 5c, 5d, 6a, 6b, 6c, 6d, 7.
521 7,11 5,9 Measurement of $\eta ^{'}$(958) Formation in Two-Photon Collisions at LEP1 *L3 paper 133 figures: 1, 2, 3, 4, 5, 6, 7.
522 7,11 5,9 The $K^0_s K^0_s$ Final State in Two-Photon Collisions *L3 note 2285 Figures: 1, 2, 3, 4, 5
524 7 1,5 Lepton-Pair Production in $\gamma\gamma$ Collisions -
525 4,6,7 4,5 Study of the Hadronic Photon Structure Function F2 gamma at LEP *L3 paper 149 figures: 1, 2, 3, 4, 5, 6, 7
1060 4,6,7 4,5 Study of the Hadronic Photon Structure Function F2 gamma at sqrt{s} = 183 GeV *L3 note 2298
526 6,7 4,5 Photon Structure Functions and Azimuthal Correlations of Lepton Pairs in Tagged $\gamma\gamma$ Collisions *L3 paper 147 figures: 1a, 1b, 2, 3, 4, 5, 6, 7, 8,

QCD and hadron physics

536 4 3 QCD Studies and Determination of $\alpha_s$ in $e^+e^-$ Collisions up to $\sqrt{s} = 183$ GeV *L3 note 2274
537 1,9 1,7 Search for Hadronic Flavor Changing Decays of the Z at LEP *L3 note 2275
539 4,9 3,7 Measurement of the Probability of $g \rightarrow c\bar{c}$ in Hadronic Z Decays *L3 note 2273
541 4,7 3,5 Oscillations in the Ratio of Factorial to Cumulant Multiplicity Moments in Z Decays at LEP *L3 note 2271
542 4,7 3,5 Local Multiplicity Fluctuations in Hadronic Z Decay *L3 paper 137 figures: 1a, 1b, 1c, 1d, 2, 3, 4, 5, 6
543 4,7 3,5 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
545 4,7 3,5 Measurement of Bose-Einstein Correlations for Both Charged and Neutral Pions from Z Decays L3 note 2272
546 4,7 3,5 Two-dimensional Study of Bose-Einstein Correlations in Z Decays at LEP *L3 note 2270

Heavy Flavour

548 1,9 1,7 Measurement of $R_b$ with the L3 Detector *L3 note 2114
550 1,10 1,8 Measurement of the $B^{0}\bar{B}^{0}$ Mixing Parameter and the $Z \rightarrow b\bar{b}$ Forward-Backward Asymmetry *L3 note 2112
552 10 8 Measurements of the $B^0$ Meson Oscillation Frequency *L3 paper 142 figures: 1, 2, 3, 4
554 10 8 Measurement of the Average Lifetime of b-Hadrons in Z Decays *L3 paper 134 figures: 1, 2, 3, 4, 5, 6,
555 10 8 Measurement of the $B^0_d$ Meson Lifetime using the Decay $\bar B^0_d \to D^{*+}\, X\, \ell^- \bar \nu$ *L3 note 2142
557 10 8 Measurement of the Lifetime Difference of Short- and Long-lived $B^0_s$ Mesons *L3 note 2281 Figures: 1, 2, 3, 4, 5
559 9 7 Heavy Quarkonium Production in Z Decays *L3 note 2295 Figures: 1, 2a, 2b, 3, 4, 5a, 5b, 6, 7
560 9 7 Production of L=1 B Mesons in Z Decay *L3 note 2279 Figures: 1, 2, 3, 4
561 8,9,10 6,7,8 Measurement of the Inclusive Charmless Semileptonic Branching Fraction of B Hadrons and a Determination of $|V_{ub}|$ at LEP *L3 paper 152

Tau physics

562 1 1 Measurement of $\tau$ Polarisation at LEP *L3 paper 140 figures: 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3, 4, 5, 6, 7
563 1,8 1,6 Measurement of the Anomalous Magnetic and Electric Dipole Moments of the Tau Lepton *L3 paper 144 figures: 1, 2
565 1 1,6 Measurement of the Weak Dipole Moments of the $\tau$ Lepton *L3 paper 138 figures: 1a, 2, 3a, 3b, 4a, 4b, 5
567 1 1 Measurement of the $\tau$ Lepton Lifetime at LEP *L3 note 2292
568 1 1,2 Measurement of the Michel Parameters, $\nu_\tau$ Helicity and $\tau$ Polarisation at LEP *L3 note 2284