outline introduction higgs particle searches for origin of mass grid computing effort linear...
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OutlineIntroductionHiggs Particle Searches for Origin of MassGrid Computing EffortLinear Collider Detector R&DConclusions
A Quest for the Origin of Mass
Dr. Jaehoon Yu
Physics Department Colloquium Jan. 2007, J. Yu
Introduction The Standard Model of Particle Physics has been very
successful Tests done better than 10-6 in some cases
But our quests for the origin of mass still continues The Higgs particle seems to be deeply involved in it but…
We haven’t seen it yet and could be just around the corner Have many thesis topics that need immediate attention New and brilliant ideas for searches needed We have been leading this effort in the DØ experiment and have
developed new tools for Higgs search in ATLAS experiment Will play a critical role in precision measurement of Higgs
properties in the ILC Work with top physicists at top HEP laboratories on top
priority issues
Physics Department Colloquium Jan. 2007, J. Yu
Fermilab Tevatron and LHC at CERN Present world’s Highest Energy
proton-anti-proton collider Ecm=1.96 TeV (=6.3x10-7J/p 13M
Joules on 10-4m2) Equivalent to the kinetic energy of a
20t truck at a speed 81 mi/hr
Chicago
Tevatron p
p CDF
DØ
Fermilab: http://www.fnal.gov/ ; DØ: http://www-d0.fnal.gov/ CERN: http://www.cern.ch/ ; ATLAS: http://atlas.web.cern.ch/
World’s Highest Energy proton-proton collider in summer 2007
Ecm=14 TeV (=44x10-7J/p 1000M Joules on 10-4m2)
Equivalent to the kinetic energy of a 20t truck at a speed 711 mi/hr
1500 physicists130 institutions30 countries
5000 physicists250 institutions60 countries
Physics Department Colloquium Jan. 2007, J. Yu
Higgs Production X-Sec at 2TeV and 14TeV
Experiment
e- (-)
e+ (+)
e-
e+
Physics Department Colloquium Jan. 2007, J. Yu
Impact of the Latest MW Result from Tevatron36 22680 GeV/cWM
39 22885 GeV/cHM
39 22885 GeV/cHM
Most optimal central value is below the experimental limit under the SM
Physics Department Colloquium Jan. 2007, J. Yu
Energy of Electron
Recent Higgs Search Results in DØ
Better than anyone else!
WH e b b
Venkat Kaushik
Physics Department Colloquium Jan. 2007, J. Yu
Electron efficiency of HM5eHM5e & & HM10eHM10e
HM10e HM5e
2 = 40 79.9 1.5x10-1 88.8 0.9x10-1
70 81.3 1.4x10-1 89.2 0.9x10-1
2 = 40 61.2 1.5x10-1 67.8 1.5x10-1
70 63.3 1.4x10-1 70.3 1.4x10-1
2 = 40 75.8 0.8x10-1 85.5 0.4x10-1
70 79.6 0.7x10-1 86.2 0.5x10-1
HM10e
9.79 0.051
HM5e6.69 0.054
Covariant Matrix Tools for Higgs
Zee
H
H 4e
Physics Department Colloquium Jan. 2007, J. Yu
How are computers used in HEP?
Digital Data
Data Reconstruction
pp
Expect 2-4PB/year in ATLAS
Physics Department Colloquium Jan. 2007, J. Yu
Grid Computing I have created and been leading a regional grid organization,
called DOSAR, Distributed Organization for Scientific and Academic Research Bringing Grid computing closer to everyday lives
We have been playing a leading role in shaping the grid computing in the state and in the world
We are playing a leading role in developing ATLAS distributed data analyses!! We proposed a distributed grid monitoring and obtained
significant support for this work Implementation and deployment in progress
Physics Department Colloquium Jan. 2007, J. Yu
MonALISA’s Interactive Client
Provides graphical user interface for global monitoring of the resources
Physics Department Colloquium Jan. 2007, J. Yu
Centralized LHC Distributed Monitoring
Physics Department Colloquium Jan. 2007, J. Yu
Linear Collider Detector R&D Precision measurement tool for Higgs particle properties in the future!!!
(Jacob Smith, Carlos Medina, Heather Brown)
Developing a precision detector using GEM
We play a leadership role ILC on beam tests and in a detector collaboration
GEM’s sensitivity to X-rays allows for new imaging technology
Physics Department Colloquium Jan. 2007, J. Yu
Conclusions Exciting time and awesome opportunities
LHC opens up a whole new kinematic regime Anything and everything that comes out of the experiments are new Opportunities for
ATLAS Detector assembly, commissioning and Higgs search Abundant Ph.D. thesis topics Opportunity to carry out research in Switzerland
Precision Detector R&D to prepare for the future (the ILC) Plenty of thesis topics Exciting beam test experiments coming up in the next year or two
We are looking for good and ambitious colleagues who want to shape the particle physics in a new era Come and talk to any of us in HEP group