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Status of L3

Status of L3. Organization in 2002 Activity in 2002 Organization in 2003 Outlook. Latest physics results in: http://cern.ch/l3/conferences/ps/Mele_Jamboree.ps.gz http://cern.ch/l3/conferences/ps/Alcaraz_Jamboree.ps.gz http://cern.ch/l3/conferences/Amsterdam2002/index.html.

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Status of L3

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  1. Status of L3 Organization in 2002 Activity in 2002 Organization in 2003 Outlook Latest physics results in: http://cern.ch/l3/conferences/ps/Mele_Jamboree.ps.gz http://cern.ch/l3/conferences/ps/Alcaraz_Jamboree.ps.gz http://cern.ch/l3/conferences/Amsterdam2002/index.html Status of L3 - Salvatore Mele

  2. Organization in2002 Meetings in 2002 • Chair of management board (Juan Alcaraz) • Analysis coordinators (Juan Alcaraz, SM) • Analysis sub-group coordinators • Three reviews of all analyses (2 to 4 days) • Monday meetings of sub-group coordinators, off-line experts, Monte Carlo production, to organize/review the weekly activity • Regular WW and two-photon group meetings • Analysis meetings when needed (1 or 2 monthly) Status of L3 - Salvatore Mele

  3. ‘Papering’ in 2002 • WW and two-photon analyses are discussed in • sub-group meetings first and then in analysis • meetings • Other analyses are discussed at analysis meetings • When deemed final, draft are prepared and • discussed with prof. Ting • Paper draft are processed by an editorial board • with internal referees (chair: SM) • After two-four meeting they are released to all • institute-leaders for final comments and sent to • Physics Letters Status of L3 - Salvatore Mele

  4. Activity in 2002 • Produce almost all Monte Carlo still needed for W physics (complex QCD and higher order electroweak effects, millions of events) • Prepare the transition of the software to the CERN linux cluster after dismission 31/12/2002 of the former L3 supercomputer • Identify person-power pitfalls and optimise human resources (leaving students, post-docs) to complete analyses before departure, or leave enough information after departure. Status of L3 - Salvatore Mele

  5. 13 papers published in 2002 • Search for a Higgs Boson Decaying into Two-Photons at LEP. • Inclusive D*+- Production in Two-Photon Collisions at LEP. • Lambda and Sigma zero Pair Production in Two-Photon Collisions at LEP. • Determination of Alpha_s from Hadronic Event Shapes in e+e- Annihilation at 192 < root(s) < 209 GeV. • The e+ e- -> Z gamma gamma -> q qbar gamma gamma Reaction at LEP and Constraints on Anomalous Quartic Gauge Boson Couplings. • Measurement of Genuine Three-Particle Bose-Einstein Correlations in Hadronic Z Decay. • Measurement of Bose-Einstein Correlations in e+e- -> W+W- Events at LEP. • Production of Single W Bosons at LEP and Measurement of WW gamma Gauge Coupling Parameters. • Search for Single Top Production at LEP. • Search for a Higgs Boson Decaying to Weak Boson Pairs at LEP. • Inclusive Charged Hadron Production in Two-Photon Collisions at LEP. • Measurement of W polarisation at LEP • Study of the e+e- -> Ze+e- process at LEP Status of L3 - Salvatore Mele

  6. 11 papers being processed • Measurement of Branching Fractions of Tau Hadronic Decays • Precision Electroweak measurements on the Z resonance • Measurements of the Cross Sections for Open Charm and Beauty Production in gamma-gamma collisions at root(s)=189-209 GeV • Charged Lepton Pair Production in Two-Photon Collisions at LEP • Fractal effects in Hadronic Z Decays • Search for the Standard Model Higgs Boson at LEP (LEP Combination) • QCD Studies in e+e- Annihilation from 30 to 209 GeV • Search for Colour Reconnection effects in e+e- -> W+W- -> hadrons through Particle-Flow studies • Measurement of Exclusive rho-rho Production in Two-Photon Collisions at High Q2 at LEP • Proton Antiproton Pair Production in Two-Photon Collisions at LEP • Search for Colour Singlet Exchange and Colour Reconnection Effects in Hadronic Z Decays from e+e- Annihilation Status of L3 - Salvatore Mele

  7. Organization in2003 Meetings in 2003 • Chair of management board and analysis coordinator (SM) • Analysis sub-group coordinators • No big changes wrt 2002: • Three long review of all activities (before winter/summer conferences and in fall) • Monday scheduling meetings • Regular WW and two-photon group meetings • Analysis meetings when needed Status of L3 - Salvatore Mele

  8. Activity in 2003 • Complete in the first months all Monte Carlo production • Complete/publish the main-stream subjects: • W Cross section, mass and couplings • Fermion pair production • Single photon production • Main SUSY searches • Running of electromagnetic coupling constant • Complete as many as possible of the other analyses • Gross estimate of 70 physics subjects… • Reasonable hopes of ~30 publications Status of L3 - Salvatore Mele

  9. Outlook • Still a lot of physics that might/will not be studied for lack of resources. • Do all efforts to recover information from almost-completed analyses, complete what possible and publish it. • Preparing a plan for dissolving the collaboration (SM): • Review process for long-term analyses • Reaction to possible new ideas • Publication of data in a form usable by future experiments/theorists • Expect high activity (by few FTE) till Summer conferences 2004 Status of L3 - Salvatore Mele

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