# FLC

 2017-04-1910:33 [PUBDB-2017-01690] Report/Journal Article et al Impact of $e^+$ and $e^-$ beam polarization on chargino and neutralino production at a linear collider [hep-ph/0007222; DESY-00-098; UWTHPH-2000-25; WUE-ITP-2000-016; HEPHY-PUB-731-2000] The European physical journal / C 18(2), 379 - 391 (2000) [10.1007/s100520000501]   We study the production processes e^+ e^- -> chi^+_i chi^-_j, i,j=1,2, and e^+ e^- -> chi^0_m chi^0_n, m,n=1,...,4, working out the advantages of polarizing both beams. For e^+ e^- -> chi^+_1 chi^-_1 with chi^-_1 -> chi^0_1 e^- nu and e^+ e^- -> chi^0_1 chi^0_2 with chi^0_2 -> chi^0_1 e^+ e^- we perform a detailed analysis, including the complete spin correlations between production and decay. [...] Restricted: PDF; 2017-04-1014:52 [PUBDB-2017-01605] Report/Journal Article et al Precise determination of the Z resonance parameters at LEP: Zedometry [hep-ex/0012018; CERN-EP-2000-148; OPAL-PR-328] The European physical journal / C 19(4), 587 - 651 (2001) [10.1007/s100520100627]   This final analysis of hadronic and leptonic cross-sections and of leptonic forward-backward asymmetries in e+e- collisions with the OPAL detector makes use of the full LEP1 data sample comprising 161 pb^-1 of integrated luminosity and 4.5 x 10^6 selected Z decays. An interpretation of the data in terms of contributions from pure Z exchange and from Z-gamma interference allows the parameters of the Z resonance to be determined in a model-independent way. [...] Restricted: PDF; 2017-04-1014:50 [PUBDB-2017-01604] Report/Journal Article et al A Study of $B_s$ meson oscillation using $D_s$ - lepton correlations [hep-ex/0011052; CERN-EP-2000-136; OPAL-PR-327] The European physical journal / C 19(2), 241 - 256 (2001) [10.1007/s100520100591]   From data collected around the Z resonance by the OPAL detector at LEP, a sample of Bs decays was obtained using Ds^-l^+ combinations, where the Ds^- was fully reconstructed in the phi pi-, K*0K- and Ks0K- decay channels or partially reconstructed in the phi l- nu (X) decay channel. These events were used to study Bs oscillation. [...] Restricted: PDF; 2017-04-1014:26 [PUBDB-2017-01599] Report/Journal Article et al Investigation of the decay of orbitally excited B mesons and first measurement of the branching ratio BR(B$^*_J\to B^*\pi$(X)) [hep-ex/0010031; CERN-EP-2000-125] The European physical journal / C 23(3), 437 - 454 (2002) [10.1007/s100520200892]   From about 4 million hadronic Z decays recorded by the OPAL detector on and near to the Z resonance, we select a sample of more than 570000 inclusively reconstructed B mesons. Orbitally-excited mesons B*J are reconstructed using Bpi+- combinations. [...] Restricted: PDF; 2017-04-1014:12 [PUBDB-2017-01594] Report/Journal Article et al Measurement of triple gauge boson couplings from $W^{+} W^{-}$ production at LEP energies up to 189-GeV [hep-ex/0009022; CERN-EP-2000-114] The European physical journal / C 19(1), 1 - 14 (2001) [10.1007/s100520100597]   A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPAL detector at LEP during 1998 at a centre-of-mass energy of 189 GeV with an integrated luminosity of 183 pb^-1. After combining with our previous measurements at centre-of-mass energies of 161-183 GeV we obtain k_g=0.97 +0.20 -0.16, g_1^z=0.991 +0.060 -0.057 and lambda_g=-0.110 +0.058 -0.055, where the errors include both statistical and systematic uncertainties and each coupling is determined by setting the other two couplings to their SM values. [...] Restricted: PDF; 2017-04-1014:08 [PUBDB-2017-01593] Report/Journal Article et al Measurement of $W$ boson polarizations and CP violating triple gauge couplings from $W^{+} W^{-}$ production at LEP [hep-ex/0009021; CERN-EP-2000-113] The European physical journal / C 19(2), 229 - 240 (2001) [10.1007/s100520100602]   Measurements are presented of the polarisation of W+W- boson pairs produced in e+e- collisions, and of CP-violating WWZ and WWGamma trilinear gauge couplings. The data were recorded by the OPAL experiment at LEP during 1998, where a total integrated luminosity of 183 pb^-1 was obtained at a centre-of-mass energy of 189 GeV. [...] Restricted: PDF; 2017-04-1014:06 [PUBDB-2017-01592] Report/Journal Article et al Measurement of the $B^0$ lifetime and oscillation frequency using $\bar{B}^0 \to D^{*+} \ell^{-}$ anti-neutrino decays [hep-ex/0010013; CERN-EP-2000-090; CERN-EP-2000-90] Physics letters / B 493(3-4), 266 - 280 (2000) [10.1016/S0370-2693(00)01145-X]   The lifetime and oscillation frequency of the B 0 meson has been measured using B ̄ 0 → D ∗+ ℓ − ν ̄ decays recorded on the Z 0 peak with the OPAL detector at LEP. The D ∗+ → D 0 π + decays were reconstructed using an inclusive technique and the production flavour of the B 0 mesons was determined using a combination of tags from the rest of the event. [...] Restricted: PDF; 2017-04-1013:58 [PUBDB-2017-01591] Report/Journal Article et al A Measurement of the rate of charm production in $W$ decays [hep-ex/0009020; CERN-EP-2000-100] Physics letters / B 490(1-2), 71 - 86 (2000) [10.1016/S0370-2693(00)00971-0]   Using data recorded at centre-of-mass energies around 183 and 189 GeV with the OPAL detector at LEP, the fundamental coupling of the charm quark to the W boson has been studied. The ratio R c W ≡Γ ( W → c X )/Γ ( W → hadrons ) has been measured from jet properties, lifetime information, and leptons produced in charm decays. [...] Restricted: PDF; 2017-04-1013:53 [PUBDB-2017-01590] Report/Journal Article et al $W^+W^-$ production cross-section and W branching fractions in $e^+e^-$ collisions at 189-GeV [hep-ex/0009019; CERN-EP-2000-101] Physics letters / B 493(3-4), 249 - 265 (2000) [10.1016/S0370-2693(00)01085-6]   From a data sample of 183 pb −1 recorded at a center-of-mass energy of s =189  GeV with the OPAL detector at LEP, 3068 W-pair candidate events are selected. Assuming Standard Model W boson decay branching fractions, the W-pair production cross section is measured to be σ WW =16.30±0.34(stat.)±0.18(syst.) pb. [...] Restricted: PDF; 2017-04-1013:49 [PUBDB-2017-01589] Report/Journal Article et al Measurement of the mass and width of the $W$ boson in $e^{+} e^{-}$ collisions at 189-GeV [hep-ex/0009018; CERN-EP-2000-099] Physics letters / B 507(1-4), 29 - 46 (2001) [10.1016/S0370-2693(01)00131-9]   The mass and width of the W boson are determined in e + e − collisions at LEP using 183 pb −1 of data recorded at a centre-of-mass energy s =189  GeV with the OPAL detector. The invariant mass distributions from 970 W + W − →qqqq and 1118 W + W − →qqℓ ν ℓ candidate events are used to measure the mass of the W boson, M W =80.451±0.076 (stat.)±0.049 (syst.) GeV. [...] Restricted: PDF;