Physics days report
Lunedi 26 Marzo:
t
Lunedi 26 Marzo:
H->WW meeting
Martedi 27 Marzo:
QCD-EWK-Top Meeting
Martedi 27 Marzo:
Joint Offline-Physics meeting
EWK meeting
Mercoledi 28 Marzo: PDG Session – Physics objects
Giovedi 29 Marzo:
Physics analysis groups
Lunedi 26 Marzo:
t
EWK meeting
Introduction and currrent status
Preliminary L1 results on Z->tautau
Past results on tau tagging efficiency from data
Z->tautau -> leptons
Z->tautau->mu + tau-jet
Giuseppe Baglisi
Simone Gennai
Alexandre Nikitenko
Kajari Mazumdar
Nicola De Filippis
What can we learn from Z->tt, W->tn channels?
• Z->tt: understand isolation algorithms, trigger, JET energy calibration
– background for A/H-> tt, tagging efficiency from data
• W->tn: understand isolation, MET “calibration”, trigger
– “Benchmark” for H+-> tn (but much lower ET involved)
– Check W->tn brancing ratio
• Masses and energy scale are different but the SM processed should/must
be understood before any search or discovery “claim”
How tau decays are identified
•
•
•
Only hadronic tau decays are considered since the leptonic tau
decays produce standard electrons/muons
– Identification through the final lepton
tau tagging basic ingredients
– Calorimetric isolation and shape variables
– Charged tracks isolation
– Other methods (IP , Decay lenght, Mass tag)
- PT of the Leading Track (i.e. highest pT
track)
must exceed a few GeV/c
- Leading Track must be found inside the
Matching cone
Main background for taus
– QCD jets
– Electron that shower late or with strong bremstrahlung
– Muons interacting in the calorimeter
G. Bagliesi – EWK meeting 26/03/2007
3
Interested group/people
•
Bari: Z->tt->t-jet+m
– A. Colaleo, N. De Filippis, L. Lusito
•
Milano: Z->tt (leptonic channels actually)
•
– T. Tabarelli, F. Ferri, + (L. Moroni, S. Malvezzi + PHD)
Pisa: HLT optimization, W->tn
– G. Bagliesi, S. Gennai, S. Dutta, S. Sarkar
•
PSI: m + t-jet trigger (calo+pixel)
– P. Trueb, D. Kotlinski
•
Tata Inst.: ( interest in invisible higgs)
– Also interested in studying the channels with taus to leptons (W->tn,Z->tt)
– Kajari Mazumdar, Sunil Bansal
•
Trento
– I. Lazzizzera
•
•
Warsaw: bZ->b tau tau->b mu+X (complete analysis)
– A. Kalinowski
Imperial College
- A. Papageorgiou, K.A Petridis S. Greder, M. Takahashi, S. Wakefield
D. Colling, C. Foudas, A. Nikitenko
G. Bagliesi – EWK meeting 26/03/2007
4
Lunedi 26 Marzo: H->WW meeting
Discussion on Workflow for H to WW (2l2nu)
All
Padova/Trento
Padova/Trento
Interested group/people
ETH
Michael Dittmar, Fabian Stockli , Joanna Weng, Wieland Hintz, Thomas Punz
MIT
Guillelmo Gomez-Ceballos, Christoph Paus, Markus Klute (+ ...)
Roma I (e.g. WW -> 2e2nu)
Chiara Rovelli, P. Meridiani
Milano B. (e.g. WW -> 2e2nu)
Pietro Govoni, Alessio Ghezz (CERN), Martina Malberti, Marco Paganoni,
Roberto Salerno, Valentina Tancini, Tommaso Tabarelli
(+ Claude Charlot (LLR) ?, E. Delmeire (Madrid)
U. di. Padova (e.g. H->WW-> 2mu 2nu)
E. Torassa, M.Margoni, A. Gresele,
I. Lazzizzera, A. Ratering
"Santader IFCA + U. di Oviedo" (e.g. WW -> 2mu 2nu)
Javier Cuevas Maestro, Rocio Vilar, Rebeca Gonzalez,
Javi Fernandez
Martedi 27 Marzo: QCD-EWK-Top Meeting
EWK Group News
FINAL !!
Roberto Tenchini
http://tenchini.web.cern.ch/tenchini/EWK-planfor2007.pdf
• Sub-group 1
• Sub-group 2
• Sub-group 3
• Sub-group 4
• Sub-group 5
Inclusive W and Z production
W, Z and multi-jets
Multiboson production (WW, WZ, ZZ, W, Z)
Drell-Yan
PDFs from W, Z and Drell-Yan
Sub-group 1
1) Measurement of W and Z production cross section at 14 TeV in the electr. channels
(10 pb−1). This is a 2007 trial publication paper.
2) Measurement of W and Z production cross section at 14 TeV in the muon
channels (10 pb−1). This is a 2007 trial publication paper.
3) Tau production from W and Z decays at CMS
(100 pb−1). This is a possible 2007 trial publication paper.
4) Measurement of the pT distribution of W / Z bosons at 14 TeV. (100 pb−1).
5) A precise luminosity determination from W and Z production at LHC (1 fb−1).
6) W mass measurement with the CMS Detector (1 fb−1).
Martedi 27 Marzo: Joint Offline-Physics meeting
News and General Status
POG status with 1_3_0:
Muon Reconstruction
Electron/Photon Reconstruction
Jets Reconstruction
B-Tagging Reconstruction
Tau-Tagging Reconstruction
Shahram Rahatlou
Riccardo Bellan
David Futyan
Monica Vazquez Acosta
Andrea Rizzi
Simone Gennai
Mercoledi 28 Marzo: PDG Session – Physics objects
DPG session
Commissioning and DPG News and Planning
Tracker Status Report
ECAL Status Report
RPC Status Report
HCAL Status Repor
Report on DT Alignment Studies using Cosmic Tracks
CSC Status Report
Darin Acosta
Didier Contardo
David Futyan
Marcello Maggi
Mayda Velasco
Francisco Matorras
Michael Schmitt
Physics Objects
b-tagging
e-gamma
p-flow/tau-ID
Thomas Speer
David Futyan
Patrick Janot
Production status/plan & generator group report
Online Selection
Filip Moortgat
C. Leonidopoulos
Commissioning Plans

Given the tight schedule this year, we must
commission CMS in the midst of a busy installation
campaign…


Still aim for the first global data-taking run during
late May




Bound to run into conflicting demands. Must weigh the
cost/benefit of sometimes installing temporary structures to
commission early
Availability of LV power tight: ~mid May for HF+ and YE+1;
the rest by mid-June
Tracker undergoing commissioning at the TIF
CSC minus endcap activated at SX5 for slice tests,
data is now coming in
Initial DAQ-FED connectivity tests in USC55
complete for many systems

Tracker, Pixel, ECAL, HCAL, CSC, DT-TF
28 March 2007
Commissioning / Physics Days meeting
3
New
Giovedi 29 Marzo: Physics analysis groups
Physics Analysis groups
Top group: report on recent progress
B physics group: B_s-->mumu and general group update
Heavy-ion physics: update
Underlying Event/Min-bias studies
status of SUSYBSM
Diffractive physics group update
Higgs group: update
General Physics Meeting
Azimuthal Anisotropy in Heavy Ions Collisions with CMS
H-->mumu in qqH
Physics TDR addendum: heavy ions
Planning
Jorgen D'Hondt
Andrey Starodumov
Bolek Wyslouch
Livio Fano
Maria Spiropulu
Samim Erhan
Sasha Nikitenko
(AN2007/004)
(AN2006/105)
David D'Enterria
Paris Sphicas
(Heavy Stable Charaged Particles)
Higgs group: update
Planning