Resonant Slepton Production
|
|
- Emma Sharp
- 6 years ago
- Views:
Transcription
1 Overvew III. Physkalsches Insttut A Resonant Slepton Producton Chrstan Autermann III. Phys. Inst. A, RWTH Aachen The Sgnal Processes Lmt Calculaton Model-Independent Lmts Combned Lmts Supported by Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
2 R-party Volatng Supersymmetry III. Physkalsches Insttut A R - party : W W R/ P R P = W MSSM = ( ) + W R/ P 3B+ L+ S ' '' = λ L L E + λ L Q D + λ U jk j k jk j k jk S s the partcle spn, B s the baryon number, L s the lepton number D j D k R-party volatng extenson of the MSSM,j,k =,,3 generaton ndces R-party conservng producton assocated/par producton of gaugnos decay va λ jk nto 4 charged leptons requre 3 charged leptons for analyss + X : Danela Käfer (λ ) Resonant producton va λ of smuon or sneutrno Cascade decay to LSP (neutralno) decay va λ nto jets & lepton Chral superfelds: L: lepton doublet superfeld E: lepton snglet superfeld Q: quark doublet superfeld D: down-lke quark snglet superfeld λ, λ`, λ``: Yukawa couplngs Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
3 A typcal sgnal process III. Physkalsches Insttut A Slepton producton va LQD couplng λ Slepton decays to a gaugno and an assocated muon Cascade decay of the gaugno nto neutralno Decay of the neutralno va LQD couplng λ nto another muon and two quarks u DØ Detector jet muon χ ~ λ d χ ~ d jet u λ ~ Z? (jets, leptons or mssng E T ) muon Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
4 Sgnal Branchng Ratos III. Physkalsches Insttut A no muon one muon two muons ( golden channel ) Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
5 Data Sample & Preselecton III. Physkalsches Insttut A Data from Aprl August 4 good recorded Lumnosty: ~347 pb - (prelmnary) Preselecton Sample Any D-muon trgger has fred Veto aganst cosmc muons (Scntllator tmngs) good muons wth pt > GeV, pt > 8 GeV central track match & solaton for both muons 6 events, expected background: ~ 984±67(stat)±54(syst) event Corrected for - Dmuon Trgger effcency - Muon reconstructon effcences - Isolaton effcences - Track fndng & matchng - Muon momentum smearng - Jet energy scale Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
6 Sgnal Channels III. Physkalsches Insttut A After applyng the -muon -jet preselecton there are three remanng sgnal channels:.. 3. ~ ~ χ ~ χ ~ ~ ν χ ±,3,4 ~, Analyze each channel separately Gve lmt on σ BR for each channel, depends only on masses, not Model! Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
7 Data Consstency: Preselecton () III. Physkalsches Insttut A number of events /. GeV Reconstructed Z-mass DO RunII prelmnary Data χ, #58 χ, #58 ν χ ±, #58 QCD from Data tt Z/γ -> Z/γ ->ττ Y Domnant SM MC s Z/γ QCD s estmated from Data by a) usng data events wth lke-sgn, nearly solated muons b) data events wth b-tag Best agreement wth method (b). Sgnal channels x ~ ~ χ ~ χ ~,3,4 ~ ~ χ ± ν, nv. d-muon mass [GeV] Other consdered but neglgble SM backgrounds: ttbar ll, ttbar l jet Z ττ Y(s), Y(s) W ν ZZ, WZ, WW Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
8 Data Consstency: Preselecton () III. Physkalsches Insttut A Preselecton & jet p T > 5 GeV Transverse Momentum of jet Transverse Momentum of jet number of events / 3. GeV 9 DO RunII prelmnary Data data χ, #58 8 χ, #58 sgnal x ν χ ±, #58 QCD from Data Z/γ 6-3 GeV tt Z/γ -> Z/γ ->ττ Y Z/γ 5-6 GeV QCD, b-tag data tt ll number of events /.5 GeV data sgnal x Statstcs Data Sgnal, pont #56 SM ± syst. ± stat. sytematc uncertanty jet p T [GeV] ~ ~ χ ~ χ ~ ~ ν ~ χ ±,3,4, jet p T [GeV] (m χ =GeV, m =63GeV) Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
9 Data Consstency: Preselecton (3) III. Physkalsches Insttut A number of events / 6. GeV Reconstructed χ Preselecton & jet p T > 5 GeV & jet p T > 5 GeV nd Mass wth data sgnal x DO RunII prelmnary Data χ, pont #58 χ, pont #58 ν χ ±, pont #58 QCD from Data tt Z/γ -> Z/γ 5-6 GeV Z/γ ->ττ Y Z/γ 6-3 GeV QCD tt ll number of events / 8. GeV Reconstructed χ Mass wth st Statstcs Data Sgnal, pont #56 SM ± syst. ± stat. data sgnal x sytematc uncertanty nv. mass of, jet, jet [GeV] ~ ~ χ ~ χ ~ ~ ν ~ χ ±,3,4, nv. mass of, jet, jet [GeV] Sgnal unscaled (m χ =GeV, m =63GeV) Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
10 Constant Correctons () III. Physkalsches Insttut A MC eff. Data eff. correcton Muon Reconstructon.938±..93±..973±.7 Muon central track fndng & matchng.97±..988±..6±.6 Muon track solaton.956±..944±..989±. Medum Muon.956±..97±..6±.6 Method: Tag & Probe Data: -muon sample MC: Z-peak 6-3 GeV (Pytha) Data eff. / MC eff. s flat for p T, η, φ and nv. -mass Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
11 p T Constant Correctons () φ III. Physkalsches Insttut A η reco correcton muon reconstructon.8.6 mean.973 ±.7 reco correcton.8.6 mean.973 ±.7 reco correcton.8.6 mean.973 ±.7 muon trackmatch muon solaton track correcton solaton correcton.4..8 murecoeff Data / Z/γ (6-3 GeV) p T [GeV] mean.9 ±.9 mean.989 ±. MU Data / Z/γ (6-3 GeV) p T [GeV].4 track correcton solaton correcton.4..8 murecoeff Data / Z/γ (6-3 GeV) φ mean.9 ±.9 mean.989 ±. MU Data / Z/γ (6-3 GeV) φ track correcton solaton correcton mean.7 ±.7 murecoeff Data / Z/γ (6-3 GeV) MU Data / Z/γ (6-3 GeV) η mean.989 ±. η... MU Data / Z/γ (6-3 GeV) MU Data / Z/γ (6-3 GeV) MU Data / Z/γ (6-3 GeV) p T [GeV] φ η Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
12 D Cuts Fnal selecton III. Physkalsches Insttut A Fnal sgnal selecton on Preselecton & wth d-jets: slepton neutralno mass plane good separaton other D cuts n planes wth -d- mass - p T + p T - nv. d-jet mass - sum of jet p T - R(jet jet ) Each D cut s optmzed wth respect to sgnal effcency purty [GeV] nv. mass of, jet, jet Sgnal (m χ =GeV, m =63GeV) DO RunII prelmnary Data χ QCD from Data tt Z/γ -> Z/γ ->ττ Y, pont # nv. mass of,, jet, jet [GeV] Hgh sgnal purty can be acheved Strong dependence on msugra pont Optmze all cut parameters for each D cut and each msugra pont Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
13 Prelmnary Results III. Physkalsches Insttut A for λ =.7 75 msugra ponts analyzed ~3M sgnal events Scans for tan β = 5, 5 and both sgn of Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
14 Consstency of found data and SM expectaton III. Physkalsches Insttut A Analyzed ~75 SUSY ponts and 3 dfferent channels Fll devaton [Λ] nto hstogram d b Λ σ + b b # sgnal ponts 5 5 Combned channel ~ l X sgma =.7 mean =. The mean (~ ) s a sgn for the general agreement The wdth (~ ) characterzes the correctness of the estmated systematc errors. The measured data s fluctuatng wthn these errors devaton [σ] tanβ=5, sgn =- [Λ] Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
15 Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5 III. Physkalsches Insttut A Lmt Calculaton wth TLmt!! ) ( ) ( d b d b s d b e d b s e X + + = = = n X X Lkelhood test statstc X: dscrmnates sgnal-lke outcomes from background multple channels: Probablty, assumng presence of sgnal and background: = = ) ( ) ' ( ' ) (! ' ) ( d X d X n d b s b s d b s e CL Cross secton Lmt: Scale sgnal expectaton (sgnal cross secton) so that ( CL s )= 95%. b b s s CL CL CL + = (TJunk, NIM A434, p , 999)
16 III. Physkalsches Insttut A Model-Independent Lmts on σ BR [pb] (all prelmnary) Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
17 mass [GeV] ~ ~ χ ) [pb] χ ) BR( Lmt σ(qq III. Physkalsches Insttut A D RunII prelmnary Generated ponts χ mass [GeV] Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
18 mass [GeV] ~ ~ χ,3, III. Physkalsches Insttut A ) [pb] χ,3,4 Lmt σ(qq ) BR( 5 4 D RunII prelmnary Generated ponts χ mass [GeV] Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
19 ~ ~ χ III. Physkalsches Insttut A mass [GeV] χ mass [GeV] D RunII prelmnary Generated ponts χ mass [GeV] ) [pb] χ ) BR( Lmt σ(qq Combnaton of ~ ~ and ~ ~ χ under the constrant, that ( ~ ) ( ~ m χ m ) χ χ Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
20 ν mass [GeV] ~ ν ~ χ ± III. Physkalsches Insttut A ) [pb] χ ± Lmt σ(qq ν ) BR(ν D RunII prelmnary Generated ponts χ mass [GeV] ± Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
21 III. Physkalsches Insttut A Combned Lmts wth the assumpton of msugra Excluded areas for specfc couplngs λ (prelmnary) Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
22 Excluson Contour for λ n msugra III. Physkalsches Insttut A [GeV] m / m m / plane ~ l= GeV D RunII prelmnary ~ l=3 GeV χ = GeV χ =75 GeV Generated ponts [GeV] m % CL Excluson Contour for λ mass [GeV] ~ l slepton-mass gaugno-mass plane ± χ, χ mass [GeV] Not allowed D RunII prelmnary Generated ponts χ mass [GeV] λ msugra A=, tan(β)=5, sgn()= Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
23 -dm Projecton on const. slepton mass III. Physkalsches Insttut A slepton-mass = GeV slepton-mass = 3 GeV lmt,σ [pb] 8 6 D RunII prelmnary ~ σ tot, l=gev, tan(β)=5 Lmt 95% CL Expected Lmt lmt,σ [pb] λ =.9 D RunII prelmnary ~ σ tot, l=3gev, tan(β)=5 Lmt 95% CL Expected Lmt 4 8 λ =.8 λ =.7 λ =.6 Not allowed λ =.8 λ =.7 λ =.6 Not allowed 6 λ =.5.5 λ =.5 4 λ =.4 λ =.4 λ =.3.5 λ = Neutralno mass χ [GeV] Neutralno mass χ [GeV] msugra A=, tan(β)=5, sgn()= Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
24 -dm Projecton on const. neutralno mass III. Physkalsches Insttut A neutralno mass = 75 GeV neutralno mass = GeV lmt,σ [pb] Not allowed λ =.7 λ =.6 λ =.5 λ =.4 D RunII prelmnary σ tot, χ =75GeV, tan(β)=5 Lmt 95% CL Expected Lmt lmt,σ [pb] Not allowed λ =.8 λ =.7 λ =.6 λ =.5 D RunII prelmnary σ tot, χ =GeV, tan(β)=5 Lmt 95% CL Expected Lmt 4 λ =.3 λ = ~ Slepton mass l [GeV] ~ Slepton mass l [GeV] msugra A=, tan(β)=5, sgn()= Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
25 Conclusons III. Physkalsches Insttut A Search for RPV SUSY through the LQD couplng λ Well understood -muon Preselecton data sample Model-Independent Lmts for ~ ~ χ, ~ ~ χ and ~ ν ~ χ ±,3,4, Combned Lmts for resonant slepton producton ~ l X A problem wth the Generator needs further studes Analyss s n the process of gettng publshed Chrstan Autermann Graduertenkollegsemnar Bad Honnef, / 5
Search for Resonant Slepton Production with DØ
Overview Search for Resonant Slepton Production with DØ Christian Autermann, III. Phys. Inst. A, RWTH Aachen Event Topology Data Selection and Efficiencies Control Plots Selection Optimization Preliminary
More informationUpdate on Search for Resonant Slepton Production
Overview Update on Search for Resonant Slepton Production Christian Autermann III. Phys. Inst. A, RWTH Aachen Luminosity Di-µ Trigger Efficiency & Error QCD Estimation New Limits Supported by Christian
More informationSearch for R-parity violating Supersymmetry. III Phys. Inst. A, RWTH Aachen
R-parity violating Supersymmetry III Phys. Inst. A, RWTH Aachen Introduction to R-parity violating SUSY Three DØ searches via non-zero LLE (short and long lived LSP) and LQD couplings Perspectives for
More informationSearch for Resonant Slepton Production with the DØ-Experiment
Overview Search for Resonant Slepton Production with the DØ-Experiment Christian Autermann, III. Phys. Inst. A R-parity violating Supersymmetry Resonant Slepton Production and Neutralino Decay Data selection
More informationMinimal Supersymmetric Standard Model (MSSM)
nmal Supersymmetrc Standard odel (SS) SUSY: # of fermons = # of bosons N= SUSY: S: 8 bosonc d.o.f. & 9 (96) fermonc d.o.f. There are no partcles n the S that can be superpartners SUSY assocates known bosons
More informationMeasurement of the photon structure function F 2 γ (x,q 2 ) with the LUMI detector at L3
Measurement of the photon structure functon F (x,q ) wth the LUMI detector at L3 Gyongy Baksay Florda Insttute of Technology Florda, USA Advsors: Marcus Hohlmann Florda Insttute of Technology Mara Kenzle-Focacc
More informationSearch for Charginos and Neutralinos with the DØ Detector
SUSY 006, 06/3/006 Marc Hohlfeld Search for Charginos and Neutralinos with the DØ Detector Marc Hohlfeld Laboratoire de l Accélérateur Linéaire, Orsay on behalf of the DØ Collaboration SUSY 006, 06/3/006
More informationHIGGS Bosons at the LHC
ATLAS HIGGS Bosons at the LHC Standard Model Higgs Boson - Search for a light Higgs at the LHC - Vector boson fusion - Comparison to the Tevatron potential Measurement of Higgs boson parameters The MSSM
More informationCMS Searches for New Physics
CMS Searches for New Physics Christian Autermann, for the CMS collaboration I. Phys. Inst. RWTH Aachen University, Germany QCD14 2 Overview Searches for New Physics at CMS Inclusive search for Supersymmetry
More informationSearches for New Phenomena with Lepton Final States at the Tevatron
Searches for New Phenomena with Lepton Final States at the Tevatron including charginos, neutralinos,, excited leptons and unexpected signatures Todd Adams Florida State University for the CDF and DØ Collaborations
More informationSUSY Search Strategies at Atlas and CMS
1 SUSY Search Strategies at Atlas and CMS (Universität Hamburg) for the Atlas and CMS Collaborations All-hadronic SUSY search Leptonic Inclusive SUSY search Reach in the msugra plane supported by: SUSY
More information2011 Razor Analysis Preview All-Hadronic / GMSB SUSY Meeting
Razor Analyss Prevew All-Hadronc / GMSB SUSY Meetng 9-6- Chrstopher Rogan Calforna Insttute of Technology Scale: Search wth M R + R (Razor Introduce Razor varables, R and M R, desgned to dscover and characterze
More informationSUSY Phenomenology & Experimental searches
SUSY Phenomenology & Experimental searches Alex Tapper Slides available at: http://www.hep.ph.ic.ac.uk/tapper/lecture.html Reminder Supersymmetry is a theory which postulates a new symmetry between fermions
More informationCollider Physics Analysis Procedures
Collider Physics Analysis Procedures Alex Tapper Slides available at: http://www.hep.ph.ic.ac.uk/~tapper/lecture.html Aim Overview of analysis techniques at CMS Contrast with Tevatron (see DØ lecture)
More informationMeasurement of the Z ττ cross-section in the semileptonic channel in pp collisions at s = 7 TeV with the ATLAS detector
Measurement of the Z ττ cross-section in the semileptonic channel in pp collisions at s = 7 TeV with the ATLAS detector Sofia Consonni Università di Milano & INFN XCVII Congresso Nazionale della Società
More informationTop Quark Physics at the LHC
Top Quark Physics at the LHC Ayana Arce HEP 0 Lectures #7 March 4, 203 Outline Introduction 2 Why are top quarks interesting? 3 Creating Top Quarks 4 Identifying Top Quarks 5 Some LHC results 6 Beyond
More informationEarly SUSY Searches in Events with Leptons with the ATLAS-Detector
Early SUSY Searches in Events with Leptons with the ATLAS-Detector Timo Müller Johannes Gutenberg-Universität Mainz 2010-29-09 EMG Annual Retreat 2010 Timo Müller (Universität Mainz) Early SUSY Searches
More informationSUSY Searches at CMS in the Fully Hadronic Channel
SUSY Searches at CMS in the Fully Hadronic Channel Project B2 - Supersymmetry at the Large Hadron Collider Christian Autermann, Sergei Bobrovskyi, Ulla Gebbert, Kolja Kaschube, Friederike Nowak, Benedikt
More informationEarly physics with Atlas at LHC
Early physics with Atlas at LHC Bellisario Esposito (INFN-Frascati) On behalf of the Atlas Collaboration Outline Atlas Experiment Physics goals Next LHC run conditions Physics processes observable with
More informationATLAS Discovery Potential of the Standard Model Higgs Boson
ATLAS Discovery Potential of the Standard Model Higgs Boson Christian Weiser University of Freiburg (on behalf of the ATLAS Collaboration) 14th Lomonosov Conference on Elementary Particle Physics Moscow,
More informationPhysics at Tevatron. Koji Sato KEK Theory Meeting 2005 Particle Physics Phenomenology March 3, Contents
Physics at Tevatron Contents Koji Sato KEK Theory Meeting 5 Particle Physics Phenomenology March 3, 5 mass measurement Top physics cross section Top mass measurement SM Higgs search Tevatron Run II Started
More informationOutline: Introduction Search for new Physics Model driven Signature based General searches. Search for new Physics at CDF
PE SU Outline: Introduction Search for new Physics Model driven Signature based General searches R Search for new Physics at CDF SUperSYmmetry Standard Model is theoretically incomplete SUSY: spin-based
More informationDiscovery Physics at the Large Hadron Collider
+ / 2 GeV N evt 4 10 3 10 2 10 CMS 2010 Preliminary s=7 TeV -1 L dt = 35 pb R > 0.15 R > 0.20 R > 0.25 R > 0.30 R > 0.35 R > 0.40 R > 0.45 R > 0.50 10 1 100 150 200 250 300 350 400 [GeV] M R Discovery
More informationRecent Results on New Phenomena and Higgs Searches at DZERO
Recent Results on New Phenomena and Higgs Searches at DZERO Neeti Parashar Louisiana Tech University Ruston, Louisiana U.S.A. 1 Outline Motivation for DØ Run II Detector at Fermilab The Fermilab Tevatron
More informationSearches for Supersymmetry at ATLAS
Searches for Supersymmetry at ATLAS Renaud Brunelière Uni. Freiburg On behalf of the ATLAS Collaboration pp b b X candidate 2 b-tagged jets pt 52 GeV and 96 GeV E T 205 GeV, M CT (bb) 20 GeV Searches for
More information14th Lomonosov Conference on Elementary Particle Physics Moscow, 24 August 2009
M. Biglietti University of Rome Sapienza & INFN On behalf of the ATLAS Collaboration 1 14th Lomonosov Conference on Elementary Particle Physics Moscow, 24 August 2009 Theoretically favored candidates for
More informationSearch for a heavy scalar boson decaying into a pair of Z bosons in the 2l2ν final state in CMS
Search for a heavy scalar boson decaying into a pair of Z bosons in the 2l2ν final state in CMS Li Yuan Beihang University CLHCP 2016 December 18, 2016 1 Outline Introduction Overview Analysis Strategy
More informationFirst physics with the ATLAS and CMS experiments. Niels van Eldik on behalf of the ATLAS and CMS collaborations
First physics with the ATLAS and CMS experiments Niels van Eldik on behalf of the ATLAS and CMS collaborations Content Status of the LHC and the ATLAS and CMS experiments Event production rates First physics
More informationHeavy MSSM Higgses at the LHC
Heavy MSSM Higgses at the LHC P.Vanlaer, IIHE Brussels (CMS), for the Atlas and CMS collaborations SUSY02, Hamburg, June 17-23, 2002 Outline LHC, Atlas and CMS A,H H + Conclusions SUSY02, Hamburg, June
More informationSearching for Supersymmetry at the LHC David Stuart, University of California, Santa Barbara. CMS SUSY Search, D. Stuart, June 2011, Lisbon!
Searching for Supersymmetry at the LHC David Stuart, University of California, Santa Barbara CMS SUSY Search, D. Stuart, June 2011, Lisbon! 1! Searching for Supersymmetry at the LHC David Stuart, University
More informationSearches for New Phenomena in Events with Multiple Leptons with the ATLAS Detector
Searches for New Phenomena in Events with Multiple Leptons with the ALAS Detector ÜLİN VAROL University of Massachusetts, Amherst On Behalf of the ALAS Collaboration OULINE Introduction Excited e/μ Search
More informationSome Thoughts on What Else to Trigger with the FTK
Some Thoughts on What Else to Trigger with the FTK Beate Heinemann, University of Liverpool Sbottom Stop Bs->mumu Other rare B decays Summary ATLAS FTK Meeting, 04/21/2005 Disclaimer: these are just a
More informationSearch for R-parity violating SUSY signatures with the ATLAS detector
Search for R-parity violating SUSY signatures with the ATLAS detector SEARCH22, Maryland Shimpei Yamamoto (Univ. of Tokyo) on behalf of the ATLAS collaboration Outline. Introduction 2. RPV-SUSY searches
More informationarxiv:hep-ex/ v1 15 Jun 2006
arxiv:hep-ex/6636v 5 Jun 6 SEARCHES FOR NEW PHYSICS IN LEPTON FINAL STATES CATALIN I. CIOBANU FOR THE CDF AND DØ COLLABORATIONS Department of Physics, University of Illinois at Urbana-Champaign, W. Green
More informationHiggs and Z τ + τ in CMS
Higgs and Z τ + τ in CMS Christian Veelken for the CMS Collaboration Moriond EWK Conference, March 14 th 2011 Z τ + τ - Production @ 7 TeV τ + Z τ - CMS Measurement of Z/γ* l + l -, l = e/µ: σ BR(Z/γ*
More informationHiggs Searches at CMS
Higgs Searches at CMS Ashok Kumar Department of Physics and Astrophysics University of Delhi 110007 Delhi, India 1 Introduction A search for the Higgs boson in the Standard Model (SM) and the Beyond Standard
More informationTitle Text. ATLAS Higgs Boson Discovery Potential
Title Text ATLAS Higgs Boson Discovery Potential Isabelle Wingerter-Seez - LAPP - Annecy isabelle.wingerter@lapp.in2p3.fr Corfu Summer Institute September 2009 1 Title Text ATLAS Standard Model Higgs Boson
More informationW and Z boson production in p p collisions from Run II of the Tevatron Collider
W and Z boson production in p p collisions from Run II of the Tevatron Collider P. Petroff To cite this version: P. Petroff. W and Z boson production in p p collisions from Run II of the Tevatron Collider.
More informationSupersymmetry at the LHC
Supersymmetry at the LHC Howard Baer Florida State University SUSY at LHC SUSY signatures SM backgrounds GEANT figure msugra : ~ g m 0 = 1000 GeV, m 1/2 = 500 GeV, A 0 = 0, ~ ul ~ t1 t - W + b ( jet4,
More informationSearching for Beyond Standard Model Physics with Top Quarks at the ATLAS Detector
Searching for Beyond Standard Model Physics with Top Quarks at the ATLAS Detector (University of Hong Kong) Topical Mini-Workshop of the New Physics at the TeraScale @ Tsung-Dao Lee Institute, SJTU Introduction
More informationPhysics with Tau Lepton Final States in ATLAS. Felix Friedrich on behalf of the ATLAS Collaboration
Physics with Tau Lepton Final States in ATLAS on behalf of the ATLAS Collaboration HEP 2012, Valparaiso (Chile), 06.01.2012 The Tau Lepton m τ = 1.8 GeV, heaviest lepton cτ = 87 μm, short lifetime hadronic
More informationMeasurements of the W Boson Mass and Trilinear Gauge Boson Couplings at the Tevatron
Measurements of the Boson Mass and Trilinear Gauge Boson Couplings at the Tevatron John Ellison University of California, Riverside, USA Selection of and Z events Measurement of the mass Tests of the gauge
More informationNon-Standard Higgs Decays
Non-Standard Higgs Decays David Kaplan Johns Hopkins University in collaboration with M McEvoy, K Rehermann, and M Schwartz Standard Higgs Decays Standard Higgs Decays 1 _ bb 140 GeV WW BR for SM Higgs
More informationHighlights of Higgs Physics at LEP
hep-ph/43 February 4 Highlights of Higgs Physics at André Sopczak Lancaster University arxiv:hep-ph/43 v Feb 4 Abstract Final results from the combined data of the four experiments AH,, L3 and OPAL on
More informationSearch for Supersymmetry with the CMS - Detector
Search for Supersymmetry with the CMS - Detector Aachen 3a SUSY Group: Markus Merschmeyer, Arnd Meyer, Prof. Thomas Hebbeker, Holger Pieta, Daniel Teyssier 29. August 2007 Supersymmetry SUSY at CMS Computing,
More informationLight Charged Higgs Discovery Potential of CMS in. A. Nikitenko, M. Hashemi, Imperial College, IPM & Sharif Univ. of Tech.
Light Charged Higgs Discovery Potential of CMS in the H ± τν Decay A. Nikitenko, M. Hashemi, Imperial College, IPM & Sharif Univ. of Tech. London Tehran Outline: Signal and background identification Signal
More informationBeyond the Standard Model Higgs boson searches using the ATLAS etector
EPJ Web of Conferences 95, 47 (5) DOI:.5/ epjconf/ 5947 C Owned by the authors, published by EDP Sciences, 5 Beyond the Standard Model Higgs boson searches using the ATLAS etector I.I. Tsukerman the ATLAS
More informationKoji TSUMURA (NTU Nagoya U.) KEK 16-18/2/2012
Koji TSUMURA (NTU Nagoya U.) @ KEK 16-18/2/2012 Outline: -Two-Higgs-doublet model -Leptophilic Higgs boson S. Kanemura, K. Tsumura and H. Yokoya, arxiv:1111.6089 M. Aoki, S. Kanemura, K. Tsumura and K.
More informationCarlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS Kobe, Japan
Carlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS 2018 - Kobe, Japan 1 Search for long-lived massive particles (LLP) in events with displaced vertices (DV): arxiv:1710.04901v1
More informationSUSY at Accelerators (other than the LHC)
SUSY at Accelerators (other than the LHC) Beate Heinemann, University of Liverpool Introduction Final LEP Results First Tevatron Run 2 Results Summary and Outlook IDM 2004, Edinburgh, September 2004 Why
More informationHiggs Signals and Implications for MSSM
Higgs Signals and Implications for MSSM Shaaban Khalil Center for Theoretical Physics Zewail City of Science and Technology SM Higgs at the LHC In the SM there is a single neutral Higgs boson, a weak isospin
More informationPhysics at the Tevatron. Lecture IV
Physics at the Tevatron Lecture IV Beate Heinemann University of California, Berkeley Lawrence Berkeley National Laboratory CERN, Academic Training Lectures, November 2007 1 Outline Lecture I: The Tevatron,
More informationWZ di-boson production at CMS
WZ di-boson production at CMS 1 Outline Physics motivations Existing results (Tevatron s = 1.96TeV) Existing prospects for CMS at s = 14TeV Preliminary prospects for CMS at s = 7TeV 2 WZ Physics motivation
More informationDifferential Top Cross-section Measurements
Differential op Cross-section Measurements ALPS207 Obergurgl Michael Fenton on behalf of the ALAS Collaboration University of Glasgow m.fenton.@research.gla.ac.uk April 8, 207 Michael Fenton Differential
More informationHiggs and New Physics at ATLAS and CMS
Higgs and New Physics at ATLAS and CMS F. Malek, LPSC-Grenoble for the ATLAS and CMS Collaborations 56th International Winter Meeting on Nuclear Physics 22-26 January 2018, Bormio-Italy ATLAS and CMS experiments
More informationSearches for Standard Model Higgs Boson at the D Detector at the Tevatron. Alexander Khanov Oklahoma State University SUSY 06
Searches for Standard Model Higgs Boson at the D Detector at the Tevatron Alexander Khanov Oklahoma State University SUSY 06 The Higgs Boson Higgs: origin of the EW symmetry breaking in SM Higgs mass:
More informationZ boson studies at the ATLAS experiment at CERN. Giacomo Artoni Ph.D Thesis Project June 6, 2011
Z boson studies at the ATLAS experiment at CERN Giacomo Artoni Ph.D Thesis Project June 6, 2011 Outline Introduction to the LHC and ATLAS ((Very) Brief) Z boson history Measurement of σ Backgrounds Acceptances
More informationSearch for Dark Matter in the mono-x* final states with ATLAS
Search for Dark Matter in the mono-x* final states with (on behalf of the Collaboration) Rencontres de Moriond (EW) 08 *: X = jet, Z, W, H Probing Dark Matter (DM) Underlying assumption: DM has also non-gravitational
More informationSUSY searches at LHC and HL-LHC perspectives
SUSY searches at LHC and HL-LHC perspectives Maximilian Goblirsch-Kolb, on behalf of the ATLAS and CMS collaborations 26.10.2017, LCWS 2017, Strasbourg SUSY particle production in p-p collisions Two main
More informationSUSY at Accelerators (other than the LHC)
SUSY at Accelerators (other than the LHC) Beate Heinemann, University of Liverpool Introduction Final LEP Results First Tevatron Run 2 Results Summary and Outlook IDM 2004, Edinburgh, September 2004 Why
More informationMeasurements of Fermionic Couplings of the Standard Model Higgs Boson using the bb, ττ and µµ Decay Channels with the ATLAS Detector
Measurements of Fermionic Couplings of the Standard Model Higgs Boson using the bb, ττ and µµ Decay Channels with the ATLAS Detector International Europhysics Conference on High Energy Physics Venice,
More informationttbar Background Estimation in the Search for b-associated MSSM Higgs Bosons Decaying to Tau-Pairs with ATLAS DPG Bonn, T 45. Higgs
ttbar Background Estimation in the Search for b-associated MSSM Higgs Bosons Decaying to Tau-Pairs with ATLAS DPG Bonn, T 45. Higgs 17.03.2010 Jana Schaarschmidt Supervised by Michael Kobel, Wolfgang Mader
More informationKoji TSUMURA (NTU à Nagoya U.)
Koji TSUMURA (NTU à Nagoya U.) Toyama mini WS 20-21/2/2012 S. Kanemura, K. Tsumura and H. Yokoya, arxiv:1111.6089 M. Aoki, S. Kanemura, K. Tsumura and K. Yagyu, Phys. Rev. D80 015017 (2009) Outline The
More informationInclusive SUSY search strategies. SUSY-PAT All-hadronic SUSY search Inclusive leptonic SUSY search
1 Inclusive SUSY search strategies Early analyses (Universität Hamburg) for the SUSY group SUSY-PAT All-hadronic SUSY search Inclusive leptonic SUSY search Outline Introduction PAT Analysis Framework Trigger
More informationSearch for SUSY at CMS in lepton or photon final states. PANIC 2011 K. Theofilatos (on behalf of CMS)
Search for SUSY at CMS in lepton or photon final states CMS in one slide Optimal design for reconstructing leptons & photons Compact & precisely aligned detector with B=3.8 T Calorimeters operating inside
More informationJet reconstruction in LHCb searching for Higgs-like particles
Jet reconstruction in LHCb searching for Higgs-like particles Alessandro Camboni (on behalf of LHCb Collaboration) DISCRETE'08 Valencia Dec 12th, 2008 Motivation Jet reconstruction is important for searches
More informationSearches for dark matter at CMS and ATLAS
Searches for dark matter at CMS and ATLAS K. Bierwagen Johannes Gutenberg University Mainz On behalf of the ATLAS and CMS Collaboration March 20, 2018 Introduction Astrophysical observations point to the
More informationHiggs search in WW * and ZZ *
Higgs search in WW * and ZZ * Emanuele Di Marco on behalf of CMS collaboration La Sapienza Università di Roma & INFN Roma1 July, 29 2011 1 Higgs production at LHC gluon fusion (gg H) gg H is the dominant
More informationThe Tevatron s Search for High Mass Higgs Bosons
The Tevatron s Search for High Mass Higgs Bosons Konstantinos A. Petridis University of Manchester On behalf of the CDF and DØ Collaborations K.A. Petridis (University of Manchester) Tevatron High Mass
More informationVector boson scattering and triboson studies at ATLAS. Junjie Zhu University of Michigan May 25, 2017
Vector boson scattering and triboson studies at ATLAS Junjie Zhu University of Michigan Periodic Table of SM Particles Particle physics: study fundamental particles and their interactions Particles in
More informationPoS(DIS 2010)190. Diboson production at CMS
(on behalf of the CMS collaboration) INFN-Napoli & University of Basilicata E-mail: fabozzi@na.infn.it We present an analysis strategy based on Monte Carlo simulations for measuring the WW and WZ production
More informationATLAS-CONF October 15, 2010
ATLAS-CONF-2010-096 October 15, 2010 Data-driven background estimation for the H τ + τ τ h search at 7 TeV with the ATLAS detector Ian Howley 7 December 2010 1 Motivation One of the primary LHC physics
More informationSearch for HIGGS Bosons in ATLAS
Search for HIGGS Bosons in ATLAS Simonetta Gentile Università di Roma La Sapienza, INFN 11th Lomanosov, Moscow, 21-27 Aug. 2003 OUTLINE Experimental Status: LEP and Tevatron Large Hadron Collider & Detector
More informationRare and Exotic Decays of Higgs boson
Rare and Exotic Decays of Higgs boson Kajari Mazumdar Tata Institute of Fundamental Research Mumbai Plan of talk Status of measurements for standard model Higgs boson Example of a rare decay Search for
More informationDirect Measurement of the W Total Decay Width at DØ. Outline
Direct Measurement of the W Total Decay Width at DØ Introduction Junjie Zhu University of Maryland On behalf of the DØ Collaboration Monte Carlo Simulation Event Selection Outline Determination of the
More informationSearches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector
Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector Christopher Bock on behalf of the ATLAS Collaboration SUSY5 - August 7, 5 Introduction Outline Introduction
More informationLa ricerca dell Higgs Standard Model a CDF
La ricerca dell Higgs Standard Model a CDF Melisa Rossi INFN-TS Giornata di seminari INFN Trieste - 7 Luglio 2009 FNAL: Fermi National Accelerator Lab Tevatron currently provides the highest energy proton-antiproton
More informationFrom the Discovery of the Higgs Boson to the Search for Dark Matter -New results from the LHC-
From the Discovery of the Higgs Boson to the Search for Dark Matter -New results from the LHC- Karl Jakobs Physikalisches Institut Universität Freiburg / Germany LHC and Data Taking, First look at the
More informationSearch for Supersymmetry at CMS in all-hadronic final states
Search for Supersymmetry at CMS in all-hadronic final states The 9th Particles and Nuclei International Conference, MIT Matthias Schröder (Universität Hamburg) on behalf of the CMS Collaboration 5 July
More informationTop and Electroweak Physics at. the Tevatron
Top and Electroweak Physics at 1 the Tevatron Graham W. Wilson University of Kansas for the CDF and DØ Collaborations April APS 2008, St. Louis, MO. April 12 th 2008 Introduction Top Physics Overview Cross-section
More informationStandard Model physics with taus in ATLAS
Standard Model physics with taus in ATLAS IFJ PAN, Cracow, Poland Why we are interested in taus? Tau leptons play an important role in the physics program of the ATLAS experiment as they are tools in many
More informationSearch for physics beyond the Standard Model at LEP 2
Search for physics beyond the Standard Model at LEP 2 Theodora D. Papadopoulou NTU Athens DESY Seminar 28/10/03 1 Outline Introduction about LEP Alternatives to the Higgs mechanism Technicolor Contact
More informationDetection of W jj in Jets + MET Final State using New Data-Driven Technique
Detection of W jj in Jets + MET Final State using New Data-Driven Technique Bi-Event Subtraction Technique Why? How? Where? Teruki Kamon Mitchell Institute for Fundamental Physics and Astronomy Texas A&M
More informationSUSY & Non SM Higgs Searches
SUSY & Non SM Higgs Searches Mario Martínez-Pérez (IFAE-Barcelona) Outline SUSY Squark/Gluino Searches Search for Chargino/Neutralino GMSB Scenario Non SM Higgs Searches Bs->μμ vs MSSM SUSY @ the LHC Final
More informationThe HL-LHC physics program
2013/12/16 Workshop on Future High Energy Circular Collider 1 The HL-LHC physics program Takanori Kono (KEK/Ochanomizu University) for the ATLAS & CMS Collaborations Workshop on Future High Energy Circular
More informationStrategy for early SUSY searches at ATLAS
SUSY07 The 15th International Conference on Supersymmetry and the Unification of Fundamental Interactions Karlsruhe, Germany Strategy for early SUSY searches at ATLAS July 26, 2007 Shimpei Yamamoto (ICEPP,
More informationSearch for New Physics in the Multijet and Missing Transverse Momentum Final State at CMS
Search for New Physics in the Multijet and Missin Transverse Momentum Final State at CMS International School on Subnuclear Physics, Erice 23 Matthias Schröder Universität Hambur June 26, 23 Matthias Schröder
More informationSlepton, Charginos and Neutralinos at the LHC
Slepton, Charginos and Neutralinos at the LHC Shufang Su U. of Arizona, UC Irvine S. Su In collaboration with J. Eckel, W. Shepherd, arxiv:.xxxx; T. Han, S. Padhi, arxiv:.xxxx; Outline Limitation of current
More informationCombined Higgs Results
Chapter 2 Combined Higgs Results This chapter presents the combined ATLAS search for the Standard Model Higgs boson. The analysis has been performed using 4.7 fb of s = 7 TeV data collected in 2, and 5.8
More informationPhysics at the TeV Scale Discovery Prospects Using the ATLAS Detector at the LHC
Physics at the TeV Scale Discovery Prospects Using the ATLAS Detector at the LHC Peter Krieger Carleton University Physics Motivations Experimental Theoretical New particles searches Standard Model Higgs
More informationHiggs Boson in Lepton Decay Modes at the CMS Experiment
Higgs Boson in Lepton Decay Modes at the Experiment Somnath Choudhury 1 for the collaboration 1 DESY - Hamburg, Germany DOI: http://dx.doi.org/1.34/desy-proc-14-4/1 The results on the standard model Higgs
More information8.882 LHC Physics. Higgs Physics and Other Essentials. [Lecture 22, April 29, 2009] Experimental Methods and Measurements
8.882 LHC Physics Experimental Methods and Measurements Higgs Physics and Other Essentials [Lecture 22, April 29, 2009] Organization Next week lectures: Monday 2pm and Tuesday 9:30am (which room?) Project
More informationPDF Studies at LHCb! Simone Bifani. On behalf of the LHCb collaboration. University of Birmingham (UK)
PDF Studies at LHCb! Simone Bifani University of Birmingham (UK) On behalf of the LHCb collaboration MENU 213 Rome 3th September - 4th October 213 Outline Introduction Analyses» Z/γ* ll, l =, e, τ#» W
More informationRecent Results from CDF. Gabriele Compostella (INFN and University of Padova) on behalf of the CDF Collaboration
Recent Results from CDF Gabriele Compostella (INFN and University of Padova) on behalf of the CDF Collaboration XCVI Congresso Nazionale della Società Italiana di Fisica - Bologna, 20-24 Settembre, 2010
More informationTevatron Physics Prospects. Paul Grannis, for the CDF and DØ collaborations ICFA Seminar, Oct
Tevatron Physics Prospects Paul Grannis, for the CDF and DØ collaborations ICFA Seminar, Oct. 29 2008 CDF and DØ Operations Fermilab is planning to run CDF and DØ through FY2010. The Tevatron is now delivering
More informationIdentification of the Higgs boson produced in association with top quark pairs in proton-proton
Identification of the Higgs boson produced in association with top quark pairs in proton-proton collision: an analysis of the final state containing three leptons with the ATLAS detector Valentina Vecchio,
More informationHighlights of top quark measurements in hadronic final states at ATLAS
Highlights of top quark measurements in hadronic final states at ATLAS Serena Palazzo 1,2,, on behalf of the ATLAS Collaboration 1 Università della Calabria 2 INFN Cosenza Abstract. Measurements of inclusive
More informationHiggs Production at LHC
Higgs Production at LHC Vittorio Del Duca INFN LNF WONP-NURT La Habana 5 february 2013 CERN North Jura ATLAS Sketch of LHC North Ring 26,6 Km long and 3,8 m of diameter, made of 8 arches connected by 8
More informationICHEP 2008 Philadelphia
ICHEP 2008 Philadelphia LHC CERN Geneva 2008 Sascha Caron Standard SUSY at LHC 2 Almost all LHC sectors are cooled down (2 sectors at this moment at 20-30K) Start at s = 10 TeV in 2008 2008 Luminosity
More informationSearch for Pair Production of Stop Quarks Mimicking Top Event Signatures
CDF/PUB/TOP/PUBLIC/9343 Search for Pair Production of Stop Quarks Mimicking Top Event Signatures The CDF Collaboration URL http://www-cdf.fnal.gov May 29, 2008 Abstract We present the search for the pair-produced
More information