Bennett Magy 1. T  TeV 2 Neutrinos can’t be detected by the ATLAS detector, but we can still piece them back together 3.

Slides:

Advertisements

Similar presentations

Higgs at the Tevatron and LHC Rick St. Denis – Glasgow University.

Advertisements

Transverse momentum of Z bosons in Zee and Zmm decays Daniel Beecher 12 December 2005.

Γγ->HH Study Report Nozomi Maeda Hiroshima Univ.

By: Kelvin Mei (Rutgers University) Advisors: Konstantinos Kousouris Andrea Giammanco.

ESTIMATING THE FAKE LEPTON BACKGROUND IN A SEARCH FOR PAIR PRODUCED STOPS AT CMS David Kolchmeyer Advisor: Alberto Graziano.

Lepton Flavor Violation at LHCb The τ → μμμ decay Matt Jaffe Physics Department, Penn State University

Emily Thompson May 5 – UMass HEP Exp Group Meeting 1 Tag-probe method: Fitting Z → μ + μ - mass peaks Motivation: 1. Want to use long p T tail of muon.

1 previously, when I calculated event selection efficiencies, I defined efficiencies as the following: efficiency in electron channel = (total number of.

September 27, 2005FAKT 2005, ViennaSlide 1 B-Tagging and ttH, H → bb Analysis on Fully Simulated Events in the ATLAS Experiment A.H. Wildauer Universität.

A Search for Point Sources of High Energy Neutrinos with AMANDA-B10 Scott Young, for the AMANDA collaboration UC-Irvine PhD Thesis:

1 First look at new MC files First look at reconstruction output from the newly- generated “mock-data” MC files. –These contain the following improvements:

A simulation study of the rapidity distributions of leptons from W boson decays at ATLAS Laura Gilbert.

TB & Simulation results Jose E. Garcia & M. Vos. Introduction SCT Week – March 03 Jose E. Garcia TB & Simulation results Simulation results Inner detector.

In order to acquire the full physics potential of the LHC, the ATLAS electromagnetic calorimeter must be able to efficiently identify photons and electrons.

Some D0 Meeting December 2003 Muon Isolation Update Ken Johns University of Arizona.

Graphing the Set of All Solutions ~adapted from walch education.

Graphing Linear Equations

W  eν The W->eν analysis is a phi uniformity calibration, and only yields relative calibration constants. This means that all of the α’s in a given eta.

1.3 The Intersection Point of Lines System of Equation A system of two equations in two variables looks like: – Notice, these are both lines. Linear Systems.

1 A Preliminary Model Independent Study of the Reaction pp  qqWW  qq ℓ qq at CMS  Gianluca CERMINARA (SUMMER STUDENT)  MUON group.

10 TeV Updates on Efficiencies and Event Shapes Ken Johns, Venkat Kaushik, Xiaowen Lei (U. Arizona) Single lepton + jets channel.

Comparison of Bayesian Neural Networks with TMVA classifiers Richa Sharma, Vipin Bhatnagar Panjab University, Chandigarh India-CMS March, 2009 Meeting,

Use of Multivariate Analysis (MVA) Technique in Data Analysis Rakshya Khatiwada 08/08/2007.

Examination of Corrupted Data in the Tile Calorimeter Stephanie Hamilton Michigan State University The ATLAS Experiment Supervisor: Irene Vichou (U of.

Ian Ross Rose-Hulman Institute of Technology Mentor: Dr. Richard Teuscher University of Toronto ATLAS Group ATLAS Calorimetery: Cosmic Ray Commissioning.

Judson Locke, Florida Institute of Technology, Melbourne, Florida, USA Advisor: Richard Teuscher, Ph.D., University of Toronto, Toronto, Ontario, Canada.

Ronald Bruijn – 10 th APP Symposium Antares results and status Ronald Bruijn.

1 HEP 2008, Olympia, Greece Ariadni Antonaki Dimitris Fassouliotis Christine Kourkoumelis Konstantinos Nikolopoulos University of Athens Studies for the.

N. Saoulidou Fermilab 1 Status & Update of track reconstruction in the Near Detector N. Saoulidou, Fermilab

EXAMINATION OF CORRUPTED DATA IN THE TILE CALORIMETER Stephanie Hamilton Michigan State University The ATLAS Collaboration Supervisor: Irene Vichou (U.

1 ttbar Cross-Section Studies D. Jana*, M. Saleem*, F. Rizatdinova**, P. Gutierrez*, P. Skubic* *University of Oklahoma, **Oklahoma State University.

LCWS14, Belgrade, October M. Pandurović, H→WW at 350 GeV and 1.4 TeV CLIC Measurement of H→WW* in HZ at 350 GeV and WW fusion at 1.4 TeV CLIC.

Study of Standard Model Backgrounds for SUSY search with ATLAS detector Takayuki Sasaki, University of Tokyo.

CEA DSM Irfu Reconstruction and analysis of ANTARES 5 line data Niccolò Cottini on behalf of the ANTARES Collaboration XX th Rencontres de Blois 21 / 05.

Status of RPC trigger analysis and Muon Trigger efficiencies for W-> μν study By Archana Sharma, Suman B. Beri Panjab University Chandigarh India-CMS Meeting.

N. Saoulidou, Fermilab, MINOS Collaboration Meeting N. Saoulidou, Fermilab, ND/CC Parallel Session, MINOS Collaboration Meeting R1.18.

Solving Linear Systems by Substitution

Study of pair-produced doubly charged Higgs bosons with a four muon final state at the CMS detector (CMS NOTE 2006/081, Authors : T.Rommerskirchen and.

Differential Equations Linear Equations with Variable Coefficients.

SEARCH FOR AN INVISIBLE HIGGS IN tth EVENTS T.L.Cheng, G.Kilvington, R.Goncalo Motivation The search for the Higgs boson is a window on physics beyond.

Search for Higgs portal Dark matter Tohoku Ayumi Yamamoto 11/5 2011/11/51.

Convergence in Proton Reconstruction Algorithm and final reference tests of Roman pots before installation in LHC Ayah Massoud Penn State University Supervisor:

A search for the ZZ signal in the 3 lepton channel Azeddine Kasmi Robert Kehoe Southern Methodist University Thanks to: H. Ma, M. Aharrouche.

Z & W Boson Reconstruction with Monte Carlo Simulations and ATLAS DATA Adam Lowery Supervisor: Dr. Jonas Strandberg Wednesday, August 11, 2010.

Search for a 4 th generation t’ quark in p-p collision at ATLAS -Suyog Shrestha, Iowa State University.

Particle identification by energy loss measurement in the NA61 (SHINE) experiment Magdalena Posiadala University of Warsaw.

SEARCH FOR DIRECT PRODUCTION OF SUPERSYMMETRIC PAIRS OF TOP QUARKS AT √ S = 8 TEV, WITH ONE LEPTON IN THE FINAL STATE. Juan Pablo Gómez Cardona PhD Candidate.

I'm concerned that the OS requirement for the signal is inefficient as the charge of the TeV scale leptons can be easily mis-assigned. As a result we do.

Viktor Veszpremi Purdue University, CDF Collaboration Tev4LHC Workshop, Oct , Fermilab ZH->vvbb results from CDF.

Marcello Barisonzi First results of AOD analysis on t-channel Single Top DAD 30/05/2005 Page 1 AOD on Single Top Marcello Barisonzi.

Converted photon and π 0 discrimination based on H    analysis.

1 Stop pair production in photon-photon collision at ILC A.Bartl (Univ. of Vienna) W.Majerotto HEPHY (Vienna) K.Moenig DESY (Zeuthen) A.N.Skachkova, N.B.Skachkov.

Update on Invisible Higgs analysis in the tth channel

Performance of flexible tower with horizontal extent

W mass reconstruction and jet calibration in ttbar events

Tree based validation tool for track reconstruction

Active Learning Lecture Slides

Top Tagging at CLIC 1.4TeV Using Jet Substructure

Electron -converted photon –pi0 discrimination

ATLAS: Missing Transverse Energy in the Search for Supersymmetry

Venkat Kaushik, Jae Yu University of Texas at Arlington

W boson helicity measurement

Higgs Vector Boson Fusion Production and Detection at the Tevatron

State Space Method.

P. Sapienza, R. Coniglione and C. Distefano

Experimental and theoretical Group Torino + Moscow

Susan Burke, University of Arizona

Northern Illinois University / NICADD

University of Wisconsin-Madison

Presentation transcript:

Bennett Magy 1

T  TeV 2

Neutrinos can’t be detected by the ATLAS detector, but we can still piece them back together 3

Reconstruction Equations With MET, MET Phi, lepton information and what we know about the W boson, reconstruct the undetected Neutrino. Currently analyzing six different methods to handle the case where the neutrino solution(s) is/are complex. Compare how their reconstructions compare with truth 4

Reconstruction Methods 5

6 Neutrino Pt Distribution Resolution RecoMeanStd Dev scaleMET TMinuit

7 Neutrino Energy Distribution Resolution RecoMeanStd Dev scaleMET TMinuit

TMinuit and scaleMET are the best reconstruction methods Neither clearly superior with respect to distance from truth Choose TMinuit since it is a faster method 8 Conclusions

Cut Optimization 9

10 8 TeV Cuts

“N-1” approach, perform all cuts except for the one being plotted Analyze significance curve 11 Linear Method

Optimize several different cuts at once. Iterates through different levels of signal efficiency and measures significance. 12 TMVA Method

13 Significance Plots --- CutsGA : CutsGA : Cut values for requested signal efficiency: CutsGA : Corresponding background efficiency : CutsGA : Transformation applied to input variables : None --- CutsGA : CutsGA : Cut[ 0]: < DeltaR_lepnu <= CutsGA : Cut[ 1]: < HT <= e CutsGA : Cut[ 2]: < bjet_pt[0] <= e CutsGA : Cut[ 3]: < bjet_pt[1] <= e CutsGA : GeV --- CutsGA : CutsGA : Cut values for requested signal efficiency: CutsGA : Corresponding background efficiency : CutsGA : Transformation applied to input variables : None --- CutsGA : CutsGA : Cut[ 0]: < DeltaR_lepnu <= CutsGA : Cut[ 1]: < HT <= e CutsGA : Cut[ 2]: < bjet_pt[0] <= e CutsGA : Cut[ 3]: < bjet_pt[1] <= e CutsGA : GeV

14 8 TeV Cuts HT Tightened

15 Cut Results: TMVA Selection 8 TeV Cuts TMVA Cuts

16 Cuts Comparison TMVA CutsHT Tightened

17 TMVA Selection on 700 GeV TMVA Cuts 8 TeV Cuts

ROOT ntuple  json  Matplotlib Plots Now available at: /afs/cern.ch/work/b/bmagy/public/PyDataMC PyDataMC 18

Cultural Activities 19

Special Thanks Thanks to Prof. Tom Schwarz, Dr. Allison McCarn, Daniel Marley, Prof. Jean Krisch, Dr. Steven Goldfarb, Prof. Homer Neal, and the Lounsbery Foundation! 20