OPAL Contributed Papers for Summer Conferences 1999
EPS-HEP'99 (Tampere, July 15-21, 1999); Lepton-Photon '99 (Stanford, August 9-14)


All documents with abstract numbers were submitted to EPS-HEP99. Those without were completed subsequently, added to the others, and made available to LP99.


OPAL Publications are identified by PRxxx.


Concerning OPAL Physics Notes identified by PNxxx:


Please note that these Physics Notes summarise preliminary OPAL results that may change before publication. Before referencing them, authors might want to verify with the OPAL Spokesperson at David.Plane@cern.ch or the OPAL Physics Coordinators opal-physics-coordinators@opal-lb.cern.ch if the results described have been updated since.







Lineshape
Abs Title Document
6-81 Precision luminosity of OPAL Z0 Lineshape Measurements with a Silicon-Tungsten Luminometer PR289
6-81 Update to Precision Measurements of the Z0 Lineshape and Lepton Asymmetry PN404




Standard Model Processes at LEP2
Abs Title Document
16 Measurement of e gamma -> e Z/gamma* PN392
18 Multi-photon production in e+e- collisions at LEP 2 PR283
20 Fermion pair production in e+e- collisions at LEP 2 PR286
19 Limits on a Z' Boson from e+e- to fermion pair Cross-sections and Asymmetries PN372
21 Measurements of Rb, AFBb, and AFBc in e+e- Collisions at 189 GeV PN380
64 Study of Z Boson Pair Production in e+e- Collisions at sqrt(s)=183 and 189 GeV PN408




W+W-,W mass,W props,TGCs and QGCs
Abs Title Document
26 Measurement of the W Mass and Width in e+e- Collisions at 183 GeV PR268
28 Colour reconnection studies in e+e-->W+W- at sqrt(s)=183 GeV PR267
Colour reconnection via heavy particle production in W+W- PN412
29 Bose-Einstein Correlations in e+e- -> W+W- at 172 and 183 GeV PR262
29 Bose-Einstein Correlations in e+e- -> W+W- events at 172, 183 and 189 GeV PN393
30 W+W- production and triple gauge boson couplings at LEP energies up to 183 GeV PR260
10 Measurement of triple gauge boson couplings from W+W- production at LEP energies up to 189 GeV PN375
6-60 W+W- Production in e+e- Collision at 189 GeV PN378
15 Measurement of the W boson mass in e+e- Collisions at 189 GeV PN385
6-353 Measurement of the W+W-gamma Cross-section and First Direct Limits on Anomalous Elecroweak Quartic Gauge Couplings PN401
6-353 Constraints on Anomalous Quartic Gauge Boson Couplings from Acoplanar Photon Pair Events PN410
5-61 A Measurement of Charm Production in e+e- ->W+W- at LEP2 PN402




Higgs Searches
Abs Title Document
35 Search for Higgs Bosons in e+e- Collisions at 183 GeV PR261
50 Search for Charged Higgs Bosons in e+e- Collisions at sqrt(s)=189 GeV PN373
6-48 Limits on Higgs Boson Masses from Combining the Data of the four LEP experiments at energies upto 183GeV - (The LEP-Higgs working group) PR277
6-56 Search for Higgs Bosons Decaying into Two Photons in e+e- Collisions at sqrt(s)=189 GeV PR281
48, 49 Search for Neutral Higgs Bosons in e+e- Collisions at sqrt(s) =< 189 GeV PR285
51 Search for invisible Higgs Boson decays at sqrt(s) =< 189 GeV PN399
Model Independent and 2HDM interpretation of Neutral Higgs Boson Searches at sqrt(s) =< 189 GeV PN416
6-49 Searches for Higgs bosons: Preliminary combined results from the four LEP experiments at sqrt(s)=189 GeV - (The LEP-Higgs working group) Note




New Particle Searches
Abs Title Document
36 Searches for R-Parity Violating Decays of Gauginos at 183 GeV at LEP PR269
37 Search for Baryon and Lepton Number Violating Z0 Decays PR263
38 Search for Anomalous Photonic Events with Missing Energy in e+e- Collisions at sqrt(s) = 130, 136 and 183 GeV PR258
39 Search for Acoplanar Lepton Pair Events in e+e-Annihilation at sqrt(s) = 161, 172 and 183 GeV PR254
40 Search for Chargino and Neutralino Production at sqrt(s) = 181-184 GeV at LEP PR256
41 Search for Scalar Top and Scalar Bottom Quarks at ECM=189 GeV at LEP PR274
42 Search for R-Parity Violating Decays of Scalar Fermions at LEP PR275
63 Search for an Indirect Signal for the Gravity Interaction in Extra Dimensions Using Muon, Tau and Photon Pairs at sqrt(s)=183 and 189 GeV at LEP PN381
62 Search for Anomalous Photonic Events with Missing Energy in e+e- Collisions at sqrt(s)=189 GeV PN386
7-1 Search for pair-produced scalar and vector leptoquarks in e+e- interactions at sqrt(s)=181-184 GeV PR287
57 Search for Chargino and Neutralino Production at sqrt(s)=189 GeV at LEP PN374
60 Search for Stable and Long-Lived Massive Charged Particles in e+e- Collisions at sqrt(s) = 130-189 GeV PN395
59 Searches in Light Gravitino Models in e+e- Collisions at sqrt{s} = 189 GeV PN397
31 Searches for R-Parity Violating Decays of Supersymmetric Particles with lamda Couplings at 189 GeV at LEP PN394
31 Searches for R-Parity Violating Decays of Sfermions and Gauginos via lamda' and lambda" Couplings at E(cms)=189 GeV at LEP PN411
58 Search for Acoplanar Lepton pairs at 189 GeV PN406




Heavy and Light Flavours
Abs Title Document
43 Measurement of the B+ and B0 Lifetimes and Search for CP(T) Violation using Reconstructed Secondary Vertices PR266
44 A Measurement of the Product Branching Ratio f(b->Lambda_b).BR(Lambda_b->LambdaX) in Z0 Decays PR265
45 Measurement of the Semileptonic Branching Ratio of Charm Hadrons produced in Z0->cc Decays PR259
46 A Measurement of R_b using a Double Tagging Method PR257
1-9 Measurement of the production rate of bb(bar) quark pairs from gluons and bb(bar)bb(bar) events in hadronic Z^0 decays PN383
5-11 Measurements of inclusive semileptonic branching fractions of b hadrons in Z0 decays PR279
1-10 Measurement of the Production Rate of Charm Quark Pairs from Gluons in Hadronic Z0 Decays PR284
4-8 A Study of Bs Meson Oscillations Using Hadronic Z0 Decays Containing Leptons PR282
5-13 D*' production PN352
5-7 Investigation of the Decay of Orbitally-Excited B Mesons and First Measurement of the Branching Ratio BR(B*_J(5732) --> B* pi) PN400




Tau Physics
Abs Title Document
12 A Measurement of the tau -> e nu nubar Branching Ratio PR264
22 A study of Three-Prong Tau Decays with Charged Kaons PR288




QCD and Inclusives
Abs Title Document
23 Intermittency and Correlations in Hadronic Z0 Decays PR270
8-62 Glueball search in K0K0, in Hadronic Z0 Decays PN357
24 Experimental Properties of Gluon and Quark Jets from a Point Source PR273
1-2 QCD studies with e+e- annihilation data at 172-189 GeV PN377
25 A test of flavour independence of alpha_s PR276
3-64 Transverse and Longitudinal Bose-Einstein Correlations in Hadronic Z^0 Decays PN387
3-63 A study of Spin Alignment of rho(770)+- and omega(782) Mesons in Hadronic Z0 Decays PR280
3-65 Bose-Einstein Correlations in K+-K+- pairs from Z0 Decays into two hadronic jets PN388
1-89 Leading particle production in light-flavour jets PN384
3-66 Charged multiplicities in Z decays int u, d, and s quarks PN396
1-5 QCD Analyses Using Jets in e+e- Annihilations at Energies between 35 and 189 GeV PN403
1-4 Neutral meson and charged particle multiplicities in quark and gluon jets PN407




Two-Photon Physics
Abs Title Document
47 Measurements of the QED Structure of the Photon PR271
2-17 Measurement of the Low-x Behaviour of the Photon Structure Function F_2^gamma PN389
2-19 Measurement of the Cross-Section for the Process ee -> ee gamma* gamma* -> ee X at sqrt(s_ee)=189 GeV PN391
3-20 Total Hadronic Cross-Section of Photon-Photon Interactions at LEP PR278
1-23 Inclusive Production of D*+- Mesons in Photon-Photon Collisions at sqrt(s_ee)=183 and 189 GeV PN390
3-24 Gamma gamma -> Chi_c2 (91-183 GeV) PR248




Collective notes for EPS-HEP99
Abs Title Document
7-67 New Particle Searches in e+e- Collisions at sqrt(s)=192-196 GeV PN398
53 Search for Higgs Bosons in e+e- Collisions at sqrt(s)=192-196 GeV PN405
1-80 Standard Model Measurements in e+e- Collisions at sqrt(s)>190 GeV PN409




Collective notes for LP99
Abs Title Document
New Particle Searches in e+e- Collisions at sqrt(s)=192-196 GeV PN413
Search for Higgs Bosons in e+e- Collisions at sqrt(s)=192-196 GeV PN414
Standard Model Measurements in e+e- Collisions at sqrt(s)>190 GeV PN415






Last update: August 3, 1999. P. Igo-Kemenes