Physics at the LPC
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TeV4LHC Workshop October 20, 2005
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 1 Tremendous Physics Potential for example…
SUSY Higgs
σ qqH, H→WW→lνjj -1 CMS,CMS 30 fb qqH, H→ZZ→llνν H→WW*/WW→llνν, NLO 2 10 H→ZZ*/ZZ→4 leptons, NLO
30 fb-1 L dt required for 5 ∫
10
qqH, H→ γγ, τ+τ- 1 H→γγ inclusive, NLO ttH, WH, H→bb Combined channels
100 200 300 400 500 800 2 mH(GeV/c )
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 2 May Result (Early On) In…
Well, replace ‘Top Quark’ with ‘Higgs Boson’ or ‘Z’ Boson’ or ‘SUSY’ or “Extra Dimensions” or…
if we get our act together
PS: come celebrate with us tomorrow the 10th anniversary for the discovery of the Top quark at Fermilab
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 3 …but There is Competition…
According to Michelangelo Mangano and Fabiola Gianotti’s “The First 1-2 years…” (hep-ph/0504221)
Michelangelo at the LHC Physics mini-workshop on Aug. 11, 2005 (@LPC)
Nature: First ‘Data’ http://agenda.cern.ch/fullAgenda.php?ida=a054821 from LHC (=ATLAS)
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 4 So, where are we in general?
y LHC Machine Material from Roger Bailey’s report during CMS week (Sept. ’05)
y CMS Detector Excerpts from Michel Della Negra’s report during CMS week (Sept. ’05)
Things look good!
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 5 LHC Installation schedule
Sector 7-8 & 8-1 Cabling 2005 R. Bailey
AB LHC Operations QRL installation
Cryomagnets Transport & alignment Sector 7-8 & 8-1 2006 Interconnects
Controls & instrumentation
Cooldown
Hardware commissioning
OP recommissioning
Machine Checkout Beam Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 6 Breakdown of a normal year
R. Bailey
AB LHC Operations
7
~ 140 days for physics per year Not forgetting Heavy Ion and TOTEM operation Leaves ~ 100 days for proton luminosity running ? Efficiency for physics 40% ? ~ 40 days ~ 1000 h ~ 4 106 s of colliding beams / year Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 7 a LHC Luminosity Profile 35 Negr L = L = SLHC: L = 10 lla 1033 1034 el De Z’@6TeV h Mic ADD X-dim@9TeV SUSY@3TeV 3000 Compositeness@40TeV
H(120GeV)Æγγ 300 Higgs@200GeV
SUSY@1TeV 30 /yr -1 200 fb SHUTDOWN 10-20 -1 -1 fb-1/yr 100 fb /yr 1000 fb /yr
First physics run: O(1fb-1)
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 8 Running Periods and Samples (My biased interpretation…most likely wrong!)
y Pilot Run (late 2007) Luminosity ~ 1032 cm-2 s-1 Integrated luminosity ~ 400 pb-1 y 1st Physics Run (2008 ) Luminosity ~ 1033 cm-2 s-1 Integrated luminosity ~ 2 fb-1 y “Low Luminosity” running (2008-2009 ) Luminosity ~ 2 x 1033 cm-2 s-1 Integrated luminosity ~ 10 fb-1 y “High Luminosity” running (2010 ) Luminosity ~ 1034 cm-2 s-1 Integrated luminosity ~ 50 fb-1
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 9 Coil Swiveling and Insertion
http://photo.cern.ch/testusers/index.php?dir=Bobine%20CMS
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 10 Commissioning with Cosmics
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 11 Cavern Murals: TDR front pages?
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 12 CMS Control and Analysis Room (CCAR)
Discussions have taken place with CERN Management to create a CMS Control and Analysis Room (CCAR) on the CERN Meyrin site. H. Hoffman is following this and has identified a potential site - Bat 510 (Print Workshop + Mail)
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 13 CMS is Already Doing a Lot
y On Hardware, Software, Triggers, … y Tremendous progress & accomplishments, some difficulties and/or delays – IP5 looks impressive !! y Many of our USCMS colleagues are extremely busy these days with hardware, triggers and software and have little (or no) time to think about Physics analysis y It’s our job at the LPC to: help CMS. The LPC is already playing a key role in a few areas; will do even more in the future create an environment in which everyone can get help and support whenever (s)he is ready for Physics y Well, what is the LHC Physics Center (LPC)? Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 14 What is the LHC Physics Center? Located on the 11th floor of the FNAL high rise, the purpose of the LPC is to ensure the US gives the strongest possible assistance to international CMS in software preparations for Day 1 y A critical mass (clustering) of young people who are actively working on software (reconstruction, particle identification, physics analysis) in a single location (11th floor of the high rise) y A resource for University-based US CMS collaborators; a place to find expertise in their time zone, a place to visit with their software and analysis questions y A brick-and-mortar location for US-based physics analysis, with such physical infrastructure as large meeting rooms, video conferencing, large scale computing, and a “water cooler” for informal discussions of physics y …and basically TEV4LHC (Tevatron experience/presence LHC success)
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 15 LPC’s Past Year Highlights
Seven strong working groups!
y 11th floor layout planned and constructed, Web presence, Remote Operations Center work started y Weekly All USCMS meeting on Fridays y 4 well-attended sessions of CMS 101, 4 well-attended sessions of “software tutorials”, tutorials on software tools y A mini-workshop on LHC turn-on physics, a workshop to initiate LPC cosmic slice effort, hosted for international CMS “physics” week, and a 2-week mini summer school y Theory/experiment brown bag lunch series, French lessons y Rumors: we are well-liked by funding agencies
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 16 Resources: 11th Floor (WH11)
y Meeting Rooms/Video Conferencing/Internet y Terminals/printers/office supplies y Secretarial and computer support
y Coffee machines/Water cooler Remote operations center
Meeting Room for 60 rooms transients from Universities plus 60 permanent residents Transient space
Of the 60 permanent slots, 25% are University physicists Expecting ~20 University-employed postdocs on the 11th floor full time by S06 Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 17 Web Information
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 18 Remote Operations Center ROC - LHC@FNAL Will be used for cosmic slice test and 2006 test beams
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 19 Slice Test – LPC Goals (slide taken from the workshop on 9/9/05) y Data access Being able to analyze the data efficiently Extremely Important is of a paramount importance: bring the for CMS and LPC data to LPC! y Remote Operation Center: infra- Cosmic Muon Challenge structure for Cosmic Muon Challenge Data taking monitoring (feedback to CERN) Data transfer monitoring y Data analysis Setup the infrastructure for the data analysis at LPC Reconstruction software, development and optimization of algorithms, calibration etc
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 20 Foundation: Working Groups The Working Groups are the heart of the LPC
y Provide an informal yet intense platform for work on the fundamental foundations of future LHC physics analysis y Ensure that expertise in all areas necessary for a complete analysis can be found at the LPC y Working closely with international CMS groups y Have been greeted with enthusiasm by international CMS and, by concentrating our efforts this way, have already been able to make substantial contributions to the CMS Collaboration
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 21 LPC Working Groups There are 7 Working Groups at the LPC y Simulation y Trigger y e-γ ID y μ ID y Jet/MET ID y Tracking y Offline/EDM
Due to time constraints, in the next several transparencies I’ll mention briefly activities in just a few of them
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 22 Entries 10000 → + - Mean 89.21 Z e e RMS 9.119 Z → μ+μ- LPC Simulation Group 103 Events / 2 GeV 102
10
1
50 100 150 M (GeV) Current Main Activities: l+l-
y Simulation Validation Suite y Forward Pixels Geometry Implementation in CMS’ detector simulation program (OSCAR) y Implementation of the Luminosity Monitoring System in OSCAR y Implementation of the Zero Degree Calorimeter (ZDC) in OSCAR y EM Calorimeter (ECAL) Crystal Response Studies y Detailed Instructions for the Generation and Analysis of Monte Carlo data at all levels: MC truth, SimHits, Digis
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 23 LPC Tracking Group
Current Main Activities:
y Implementation of a Road Search tracking algorithm
Fundamentally different from the default tracking
No pixel requirements for seeding; good for startup or cosmic challenge y Implementation of Tracking Software in the new framework (CMSSW)
Definition of low-level data structures • Porting of reconstruction code
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 24 LPC Muon Group
Main Activities:
y Working on two specific commitments for contributions to Volume I of Physics TDR: Muon Identification algorithm Comparison of testbeam data with simulation y Concurrently, attempting to serve as resource for other ongoing software efforts, e.g. Muon Alignment Reconstruction of TeV μ’s
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 25 LPC Jet/MET Group
JET MET
• LPC JetMET provided the • MET package design and implementation pioneer example of Principle: Keep as simple & efficient as possible reconstruction in CMSSW Coherent design with Jet package in CMSSW framework Provides detailed record of any applied corrections to MET • LPC JetMET supports and Early results from converted ORCA data → develops the Jets package consistent with ORCA • Implemented algorithms: • Common JetMET Correction Package design IterativeCone, MidPoint, KT Separates out high-level (jets) versus low-level (towers) corrections • Results consistent with ORCA Enables "light" (reco) as well as "heavy" (analysis) JetMET Data Products Allows for consistent corrections to Jets & CMS defaults MET New thresholds • Beam-halo background studies in MET Timing, energy pattern recognition Working to simulate Beam Halo + low-lumi PU Study effect on trigger rates & physics dists
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 26 Motherhood We (CMS, LPC) have to be ready for physics analysis when first data is collected y What’s data? First collisions? Calibration? Alignment? y What’s physics analysis? At what level? y Do we care about details, e.g. JES at the beginning? y Which analyses should definitely be ready on day 1? y …and some organizational/scheduling questions • admin - how do we (=USCMS) organize ourselves? Who’s doing what? When? How? • technical – old vs new EDM/FW? MC data availability? We should not sacrifice the long-term health of the program! Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 27 Path @LPC Move forward in small steps and re-evaluate where we are on a regular basis y Everything we do will be transparent to International CMS y Since it has never been done before (LPC, not physics!) we are stepping onto uncharted territory y We have some ideas, but they are based on experiences in different environments y We will all have to work closely together y Many things have to work well for us to succeed y …
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 28 Goals of Physics Workshop Feedback is not only welcome – it is essential
y Get to know (communication is the name of the game!) each other who is doing what wrt Physics analysis what level of support already exists at the LPC (computing, software, algorithms, environment,…)
y Find out where one can fit in y Join one (or more) of the working groups y Allow newcomers to learn from the experience of those already active in CMS analysis y Help in shaping up our future – feedback, input y Begin to enjoy the road to the “promised land”…
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 29 Agenda
Keep it light – enough time for discussion and for (one-on-one) communication
Current Physics Analyses (mainly for TDR)
LPC Activities (past, present, and future)
The future/Our future
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 30 My Observations
See presentations at http://agenda.cern.ch/fullAgenda.php?ida=a055599 y We have a professionally diverse group of people, wide spectrum of interests and knowledge of CMS y In fact, we have two (well-separated?) communities Those already doing physics analysis (with whatever is currently available), mainly for the TDR Those yet to start doing any kind of physics analysis on CMS (currently in hardware or software, or newcomers) y Everybody needs a forum to discuss their efforts: progress, results, problems, dilemmas, feedback etc A place for detailed, informal conversations on physics y There is already a level of expertise & experience at the LPC capable of beginning to support these efforts (needs strengthening!) Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 31 Initial Ideas Feedback is not only welcome – it is essential y We have to be inclusive
Provide forum for discussion to ongoing analyses Senior/experienced people should help here
Create a new analysis effort to do a full blown (generic) analysis (with whatever exists) – started looking at events with complex signature (a few physics objects), namely at
tt e+m+ET+jets (case study, not for TDR!) We’ll learn together about holes, problems, difficulties And we’ll help in solving them for CMS y We all have to help in strengthening the foundation of our analysis effort – the LPC working groups
The ID groups will take care of all object-related studies, e.g. efficiency, fake rate, resolution, trigger eff etc Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 32 Conclusions
y The LHC machine as well as the CMS experiment are on schedule for first collisions in 2007 y The LPC has been embraced by the US CMS physics community y The LPC has already had substantial impact on both US and international CMS y The LPC is an essential part of US CMS’ strategy for doing physics analysis
Boaz Klima TEV4LHC Workshop - Oct. 20, 2005 33