Carlos A. Chavez Barajas 22nd, May 2013 atest work : Data Analysis • Non-collision background estimation (SUSY search • W+Jets cross section (data driven Top bkg estima Trigger • Operations (on-call activities, and online work) • Software (developments and management)
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Carlos A. Chavez Barajas 22nd, May 2013 Latest work : Data Analysis Non-collision background estimation (SUSY searches) W+Jets cross section (data driven.
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Carlos A. Chavez Barajas
22nd, May 2013
Latest work :
• Data Analysis• Non-collision background estimation (SUSY searches) • W+Jets cross section (data driven Top bkg estimation)
• Trigger• Operations (on-call activities, and online work)• Software (developments and management)
2Data Analysis
• Estimation of non-collision background– SUSY searches:
• Monitoring and diagnosing of problems during data-taking • Need to take immediate actions with problems found online • Need to have extensive knowledge of Trigger menus and
configuration as well as the tools that handle these:– Preparation of trigger configuration for online running
– TriggerMenuPython – Prescale sets for different lumi scenarios
– TriggerRuleBook– Handle interface to Trigger Database for configuration and prescales
– TriggerTool
5ATLAS High Level Trigger
Dataflow
CTP decision & RoI address
RoI BuilderRoI Builder
L2 Supervisor (L2SV)
L2 Supervisor (L2SV)
L2 Processing Units (L2PUs)L2 Processing Units (L2PUs)
RODROD RODROD RODROD
ROBROBROBROB ROBROB
ReadOut System (ROS)
MuMu CaloCalo SiSi Detector Front-End
RoI R
eque
st
RoI D
ata
Data Flow Manager (DFM)
Data Flow Manager (DFM)
L2 Result
EF Processing Units (EFPUs)EF Processing Units (EFPUs)
• I have demonstrated crucial involvement in Trigger operations• Quickly became part of approximately 5 online trigger experts• I played a central role managing and developing trigger software
• I have valuable experience with hardware and software• Developing and leading trigger software projects • Building and testing T2K calorimeters on time for installation• Collaborating well with group of people and ability to co-ordinate
– Data Quality Coordinator in BABAR
• Wide physics data analysis experience• SUSY searches and SM measurements in ATLAS• B and Charm physics from BABAR experiment
• ATLAS has a very exciting LS1 upgrade program and beyond• I am very keen on playing a central role in this program• I feel I can contribute effectively and make it a success
Carlos A. Chavez Barajas (CERN) 10
THANKS
Carlos A. Chavez Barajas (CERN)
11Sphericity
Carlos A. Chavez Barajas (CERN) 12
BABAR Experiment
• Branching Ratio measurement of B0->π0π0 =(2.1±0.6±0.3)x10-6
• Time integrated CP asymmetry Cπ0π0=(B0-B0)/(B0+B0) =-1.12±0.56±0.06
• Charmless two-body group – I provided and validated reduced datasets for several BF and CP-
asymmetry measurements– BR and Direct CP-asymmetry in B0->Kπ
• Constraining CKM angle α with BR and CP-asymmetries in B->ππ using Isospin relations
B -> ππ
Carlos A. Chavez Barajas (CERN) 13
D0-D0 mixing (BaBar)• Mixing is characterized by the parameters : x (ΔM) , y (ΔΓ) • By measuring the lifetime ratio CP even and CP-odd final states
and assuming CP-conservation the mixing parameter y = yCP:• D* tagged sample and untagged sample
2006 Babar Data Quality Coordinator (for one year)
Carlos A. Chavez Barajas (CERN) 15
T2K Ecal construction
• 4 Electromagnetic Barrel modules – Plastic scintillator and lead, optic fibers , MPPCs– Module dimensions approximately 2m X 4m
• During construction we carried out automatic radioactive source scans to measure light attenuation in the optic fibers, and validated the integrity of the detector
• Collaborating with several UK universities (including Warwick)• Several undergraduate, masters and PhD students involved in