Kloe plans for 500 pb-1 Since now up to mid/end 2003 (before restart of data taking) elements for a discussion G. Capon 11-Oct-2002

Items list 2002 milestones for GR1 analyse 2001 data for results : produce some (preliminary) results with full 2001+2002 statistics produce results on hot/advertised topics : sigma-hadronic, Vus, …. understand background effects on various analysises (think to next data taking, also to Dafne2 at high luminosity) Measure F branching ratios ( K+K-, KSKL, r p, h g ) and sF show use of dr. ch. ADC in some analysises give a measurement of e’/e at 10-3 precision KS  p e n F  r p F  P,S + g KS  p+p-/KSp0p0 KL p0 p0, p+p- sigma-hadr K+ m+ n/K+p+p0 Preliminary

Tasks and Options finish DST production for each physics stream WHICH DATA SAMPLE ? as a general rule full 2001+2002 statistics should be used ( analysis is faster now with DST) however some analyses could not want to use full statistics because : (AND increase of data does not help to reduce syst) the analysis is systematic limited 2002 sample has less background time constraint to reach a result for a presentation different data taking conditions (cosmic veto  T3 filter)

if full stat is used by everybody it would be convenient to define a data set common to all streams (with associated L at 1% precision) Denig  Nguyen all streams will be equally affected by machine backgd and one could have a unique MC simulation with background levels properly weighted to this corresponds the proposal to have a single very large (500 M evts) MC generation of Phi -->all OR define two different data sets for 2001 and 2002 respectively Preliminary studies of machine background effects : KSp+p-/KSp0p0 appears constant vs endcap hot rate also a0g2C 5g and h’2C 3g seem unaffected by machine background

offline software Datarec issues : Produce DST for charged kaon stream (  1 month) ad-hoc momentum corrections for charge asymmetry ( F  r p ) ? dr. ch. ADC analysis MonteCarlo issues : Define a DST format for MC events (banks for MC truth) add different background levels to generated events calorim thresholds simulation (available but not standard) New generators ( gg  p+p-, gg  m+m-……..) …… improve description of geometry, materials, wires sagitta, resolution tails drift chamber ADC simulation , pion/kaon interactions in calorimeter Analysis tools : direct use of ROOT (no n-tuples) ??

Hardware resources New hardware to be purchased (delivered by end year ??) : tape library drives upgrade : 40GB  60 GB (per cassette) 400 cassettes 3 TeraBytes of disk space (order to be sent) CPU resources seem adequate (?) if no reprocessing is needed Disk space : now could be limited next 3 Tbytes ordered should made life reasonable Tape library : compactification of  5100 cassettes is a big job (1-2 months…?)

Offline computing resources IBM 7026-B80 4-way 375 MHz MC & DST PRODUCTION 32 Sun CPU’s Sun Enterprise 450 4-way 400 MHz RECONSTRUCTION 84 IBM CPU’s ANALYSIS 8 Sun + 8 IBM CPU’s Tape/disk servers Local online disks: 1.4 TB Data acquisition Calibration work afs cell: 2.0 TB User areas Analysis/working groups Managed disk space: 3.0 TB 1.2 TB: Input/output staging Reconstruction MC/DST production 1.4 TB: Cache for data on tape DST’s maintained on disk Tape library: 220 TB 5500 40GB slots 12 Magstar drives 14 MB/sec each Planned upgrade to 60GB/cassette

Organization issues coordination : avoid duplication of work (etrigger, evtx, MC samples,…) Set priorities : ?? Work follow-up: WG meetings : 1-2 per month WG conveners and referees should follow closely the analysis (push for completion, react if man power is lacking) each analysis should produce a memo : only one, not too long or time expensive (less 20 pages) give enough details to allow a critical evaluation of the analysis if analysis approved : memo --> kloe note draft of publication paper can be prepared in the same time

Next conferences new topics (different from 2001 ones) should be presented : Aks, shadr, interferf+regen, K0 mass,KLgg, G(Fee,mm) ……. and significant upgrades of published analyses KS  p e n ; KSp+p-/KS  p0p0 (going on) each single B.R. F  f0 g (syst limited ?) ; F  a0 g F  h g, h’ g (including 2c 7g) Winter conferences (LaThuile, Moriond) Aks, interferf+regen, K0 mass, KLgg final result on F r p (2000 data) preliminary shadr at 2% precision ? , G(Fee,mm) Summer conferences branching ratio’s : KSp+p- , p0p0 , K+  p+ p0, m+ n, p+p0 p0 Final full stat results on shadr ? h decays, we must ask a presentation and specify the content

Summary of analyses - 2002 milestones today memo Paper draft Comments/goals Ksp e n 90 pb-1 (2001) 4 Dec Separate : p+e- n ‘; p-e+n ; Aks Ksp+p(g) /Ksp0p0 Syst reduced 0.7  0.2 % get sF ; no g spectrum F r p 16 pb-1 (2000) km274 Jan03 16pb-1 End03 full stat Study ISR effects – Br(wpp) Momentum bias F  h’g h’ 2C 7g (2000) km268 jan03 more MC, systematics evaluation, use part of 2002 F p0p0g F p+p-g F h0p0g Mid03 Full stat F p0p0g no man power: merge with F h0p0g ? KLp+p- Tag or vtx method KL 2p0 Ratio KL2p0/3p0 hadronic cross section 73 pb-1 (2001) Jan03 Small qg sample  ds(eepp(g))/dQ2 K+m+n/K+p+p0 mid03

Summary of analyses – others (not milestones) today memo Draft Comments/goals K0(K+) mass tracking pbs for K+ km271 4 Nov K0 mass only KLgg / KL 3p0 150pb-1 (2001) km272 Add 150 pb-1 2002 filtered KL regeneration interferometry 16 pb-1 280 pb-1 18 dec Merge the 2 topics.. Also t KL h  3g upper limit 140 pb-1 (2001) km267 jan03 Jan03 Br <  2 10-5 Xball < 1.8 10-5 unpublished h  p+p-p0 h  3p0 , p0 g g 16 pb-1 (2000) End03 Full stat - Dalitz plot parameters Charge asymmetry G(Fee,mm) 2002 scan Dec K+ cross section DST Prod (1 month) K+ e+np0 (Vus) Mid03 K+p+p0p0 , e+np0p0 Ventura Phd Thesis