2011 Razor Analysis Preview All-Hadronic / GMSB SUSY Meeting

Transcription

1 Razor Analyss Prevew All-Hadronc / GMSB SUSY Meetng 9-6- Chrstopher Rogan Calforna Insttute of Technology

2 Scale: Search wth M R + R (Razor Introduce Razor varables, R and M R, desgned to dscover and characterze massve par-producton arxv:6.77 Arrangng all reconstructed objects nto two hemspheres, wth -momenta MET = M ( p q z q p z M R = (p z q z ( p q MT R M ( p = + q M (p + q Example: Peaks at Edge at p q and q q (q χ (q χ M = m q m χ m q M = m q m χ m q Angle: R = M R T M R Chrstopher Rogan - LPC Topc of the Week - Aprl 5,

3 Scale: Search wth M R + R (Razor Introduce Razor varables, R and M R, desgned to dscover and characterze massve par-producton arxv:6.77 Arrangng all reconstructed objects nto two hemspheres, wth -momenta M R = M R T = M ( p + q M (p + q MET = M ( p q z q p z (p z q z ( p q Angle: R = M T R p M R q and R QCD CMS Smulaton L dt = 5 pb Events R / bn tt+jets CMS Smulaton L dt = 5 pb R Events / bn SUSY LM CMS Smulaton L dt = 5 pb Events / bn 5 5 [GeV] M R 5 5 [GeV] M R 5 5 [GeV] M R

4 / GeV / GeV 4 M R dstrbuton for QCD CMS background falls dctated by cut on R L dt = 5 pb - exponentally, wth slope CMS Prelmnary 4 5 M R - L dt = 5 pb [GeV] M R [GeV] R >. R >.5 R >. R >.5 R >.4 R >.45 R >.5 R >.5 R >. R >.5 R >. R >.5 R >.4 R >.45 R >.5 Slope Paramater [/GeV] st Slope Paramater [/GeV] CMS L dt = 5 pb -.8 CMS Prelmnary (R cut L dt = 5 pb QCD mult-jets n data Exponental slopes scale lnearly wth (R cut used to predct QCD background to hgh M R search regon! - Chrstopher Rogan - Razor Analyss Prevew (R cut

5 CMS Prelmnary MU BOX DATA Events / GeV - L dt = 5 pb Total SM W+jets Z+jets Top+X M R [GeV] (R >.4 Chrstopher Rogan - Razor Analyss Prevew

6 Analyss Outlne Chrstopher Rogan - Razor Analyss Prevew

7 Razor Trggers See prevous trgger talks: u Sute of Razor trggers desgned to capture events n most nterestng regon of R/MR plane u In addton to fully hadronc trggers, there are R/MR x-trggers wth: Æ Sngle Muon Æ Sngle Electron Æ B-tagged jet Æ Sngle Photon Æ Double Photon Razor trgger collecton desgned to serve at least 6 separate NP search analyses u Deployed onlne after May techncal stop Chrstopher Rogan - Razor Analyss Prevew

8 Razor Trggers n the Menu u Rates are taken from run 66 and scaled to e u Rates for the pure razor trggers match estmates to decmal places u x-trgger object thresholds dctate desgn of fnal state boxes Chrstopher Rogan - Razor Analyss Prevew

9 R/MR Trggers (HLT R MR5 (HLT R MR5 u Frst look at trggers demonstrates that they are behavng as expected u Currently mgratng to new analyss strategy w/ trggers Chrstopher Rogan - Razor Analyss Prevew

10 Baselne Event selecton u Standard HCAL DPG HBHE Nose Cleanng Flag Æ See talk from Y Chen: contrbid=&resid=&materalid=sldes&confid=9896 Æ Wk: u Jet ID and selecton: LL Corrected Calo Jets p T > 4 GeV/c η <. u Requre at least jets wth p T > 6 GeV/c (requrement from L trgger seed - All jets (of a gven type clustered nto two hemspheres u PF MET used LL Corrected PF Jets p T > 4 GeV/c η <. LL Corrected PF Jets w/ FastJet PU correcton p T > 4 GeV/c η <. Loose Jet ID Loose Jet ID Loose Jet ID CALO PF PFPU Uncorrected track Jets p T > 5 GeV/c η <.4 Consstent w/ PV and more Chrstopher Rogan - Razor Analyss Prevew 9-6-

11 Offlne Lepton Selecton Chrstopher Rogan - Razor Analyss Prevew 9-6-

12 Fnal State Boxes MU Box o Tght muon > GeV/c p µ T HAD Box o Veto on lepton boxes ELE Box o WP8 electron p e T > GeV/c u Dsjont boxes based on physcs object ID allows us to solate dfferent physcs processes u Lepton boxes, along wth a QCD control sample, are used for the background predcton n the hadronc sgnal box (along wth predctons n lepton boxes sgnal regons u Possbltes for sub-dvsons wthn boxes (solaton nverson for QCD, b- tag categores, lepton charge(s, etc. MUMU Box EMU Box EE Box o Tght muon+ o Tght muon+ Loose muon WP8 electron p µ T > GeV/c pµ T > GeV/c pe T > GeV/c o WP8 electron + WP95 electron p e T > GeV/c Chrstopher Rogan - Razor Analyss Prevew 9-6-

13 Back to the Future w/ Data CALO JETS / GeV CMS Prelmnary - L dt = 4 pb Jet PD + (HLT_DJetAve5U HLT_DJetAve HLT_Jet R >.5 R >. R >.5 R >. R >.5 R >.4 R >.45 R >.5 Slope Param [/GeV] CMS Prelmnary - L dt = 4 pb χ / ndf 4.9 / 4 Prob.975 p -.48 ±.89 p -.49 ± M R [GeV] (R cut u Pre-scaled QCD control samples behave the same (quanttatvely and qualtatvely relatve to to th order u We proceed to search for dfferences w.r.t. to behavor (PU, etc. Chrstopher Rogan - Razor Analyss Prevew 9-6-

14 New Varables / GeV Slope Param [/GeV] CALO JETS CMS Prelmnary - L dt = 4 pb M R CMS Prelmnary - L dt = 4 pb [GeV] χ / ndf 4.9 / 4 Prob.975 p -.48 ±.89 p -.49 ± (R cut R >.5 R >. R >.5 R >. R >.5 R >.4 R >.45 R > Jet PD + (HLT_DJetAve5U HLT_DJetAve HLT_Jet [R, M R ] [R, γ R M R ] u Change to analogous varables Æ Dervaton/detals n backup sldes can dscuss f there s tme/nterest u Practcal Effects Æ No un-physcal confguratons è ~-% ncrease n sgnal effcency (dependng on model ~same ncrease n bkg. Æ Nearly dentcal behavor (both qualtatvely and quanttatvely can use R/MR trggers.5..5 ( cut Chrstopher Rogan - Razor Analyss Prevew R* / GeV Slope Param [/GeV] CMS Prelmnary γ M [GeV] R* R* CMS Prelmnary - L dt = 4 pb - L dt = 4 pb * R >.5 * R >. * R >.5 * R >. * R >.5 * R >.4 * R >.45 * R >.5 χ / ndf / 5 Prob.89 p ±.75 p -.44 ±.66

15 PU dependence CALO JETS Jet PD + (HLT_DJetAve HLT_DJetAve6 HLT_Jet HLT_Jet6 / GeV 4 CMS Prelmnary - L dt = pb Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV / GeV 4 CMS Prelmnary - L dt = pb Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV INCL / N PV PV [GeV] (R >.5 M R [GeV] (R >.5 M R INCL / N PV PV M R* [GeV] (R* > M R* [GeV] (R* >.5 u Here, we look at MR dstrbuton as a functon of the number of reconstructed prmary vertces (PV Chrstopher Rogan - Razor Analyss Prevew

16 PF JETS / GeV INCL / N PV PV 4 CMS Prelmnary - L dt = pb PU dependence Jet PD + (HLT_DJetAve HLT_DJetAve6 HLT_Jet HLT_Jet6 Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* > M R* [GeV] (R* >.5 PFPU JETS u Small NPV dependence n low MR regon / GeV INCL / N PV PV 4 CMS Prelmnary - L dt = pb Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* > M R* [GeV] (R* >.5 u Note: magntude of trends (upper bound mply ~percent effects on exponental slopes Chrstopher Rogan - Razor Analyss Prevew

17 PU dependence W+jets Madgraph MC n HAD Box PF JETS / 4 GeV 5 Inclusve CMS Smulaton 4 [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* >.5 PFPU JETS / 4 GeV 5 CMS Smulaton Inclusve 4 [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 u Same pattern (or lack thereof n MC Chrstopher Rogan - Razor Analyss Prevew

18 PU dependence W+jets Madgraph MC n HAD Box / 4 GeV CALO JETS CMS Smulaton Inclusve [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU / 4 GeV 5 4 PF JETS CMS Smulaton Inclusve [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU / 4 GeV 5 4 PFPU JETS CMS Smulaton Inclusve [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU M R* [GeV] (R* > M R* [GeV] (R* > M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 u Here, we look for PU dependence as a functon of the number of generated PU nteractons (PU Chrstopher Rogan - Razor Analyss Prevew

19 PU dependence / 4 GeV CALO JETS CMS Smulaton Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* >.5 ttbar+jets Madgraph MC n HAD Box / 4 GeV PF JETS CMS Smulaton Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* >.5 / 4 GeV PFPU JETS 7 Inclusve CMS Smulaton [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 u Other backgrounds show PU dependence n low MR turn-on regon u See backups for other background n dfferent fnal states vs. PU Chrstopher Rogan - Razor Analyss Prevew

20 MR shape dependence on Lepton ID CALO JETS / 4 GeV 4 W+jets Madgraph MC CMS Smulaton All W(µν Loose ID Tght ID u We want to understand the potental effect of our muon selecton on the dstrbuton of MR u Defne baselne/denomnator as all smulated events wth a generator level muon wthn acceptance (p T and η [ All W (µν] / N ALL CAT M R* [GeV] (R* > M R* [GeV] (R* >. u Apply lepton ID on top of baselne to see effect on MR dstrbuton u Only small dependence observed Chrstopher Rogan - Razor Analyss Prevew 9-6-

21 MR shape dependence on Lepton ID PF JETS W+jets Madgraph MC PFPU JETS 5 CMS Smulaton All W(µν 5 CMS Smulaton All W(µν / 4 GeV 4 Loose ID Tght ID / 4 GeV 4 Loose ID Tght ID M R* [GeV] (R* > M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. u Slghtly stronger shape dependence for PF jets (muon s ncluded n lst of jets gong nto R/MR calculatons Chrstopher Rogan - Razor Analyss Prevew 9-6-

22 MR shape dependence on Lepton ID CALO JETS ttbar+jets Madgraph MC PF JETS PFPU JETS / 4 GeV 4 CMS Smulaton All tt(w(µν Loose ID Tght ID / 4 GeV 4 CMS Smulaton All tt(w(µν Loose ID Tght ID / 4 GeV 4 CMS Smulaton All tt(w(µν Loose ID Tght ID / N ALL CAT M R* [GeV] (R* >. γ [GeV] (R* >..95 R* M R* M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* > M R* [GeV] (R* >. u Smlar results for smulated ttbar events wth muons Chrstopher Rogan - Razor Analyss Prevew 9-6-

23 MR shape dependence on Lepton ID CALO JETS W+jets Madgraph MC 5 All W(eν u We want to understand the potental effect of our electron selecton on the dstrbuton of MR / 4 GeV 4 CMS Smulaton WP 95 WP 8 u Defne baselne/denomnator as all smulated events wth a generator level electron wthn acceptance (p T and η [ All W (eν] / N ALL CAT M R* [GeV] (R* > M R* [GeV] (R* >. u Apply lepton ID on top of baselne to see effect on MR dstrbuton u Only small dependence observed (stronger n turn-on low MR regon Chrstopher Rogan - Razor Analyss Prevew 9-6-

24 MR shape dependence on Lepton ID PF JETS W+jets Madgraph MC PFPU JETS 5 All W(eν 5 All W(eν / 4 GeV 4 CMS Smulaton WP 95 WP 8 / 4 GeV 4 CMS Smulaton WP 95 WP M R* [GeV] (R* > M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. Chrstopher Rogan - Razor Analyss Prevew

25 MR shape dependence on Lepton ID CALO JETS ttbar+jets Madgraph MC PF JETS PFPU JETS / 4 GeV 4 CMS Smulaton All tt(w(eν WP 95 WP 8 / 4 GeV 4 CMS Smulaton All tt(w(eν WP 95 WP 8 / 4 GeV 4 CMS Smulaton All tt(w(eν WP 95 WP M R* [GeV] (R* > M R* [GeV] (R* > M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. u Smlar results for smulated ttbar events wth electrons Chrstopher Rogan - Razor Analyss Prevew

26 MR shape dependence on B-tag requrements CALO JETS tt+jets Madgraph MC / 4 GeV 5 All tt 4 CMS Smulaton TCHEL TCHEM TCHET TCHEL+TCHEL TCHEM+TCHEL TCHET+TCHEL u We want to understand the potental effect of b-taggng on the dstrbuton of MR u We consder the Track Countng Hgh Effcency (TCHE tagger wth the loose (L, medum (M and tght (T workng ponts / N ALL CAT M R* [GeV] (R* > M R* [GeV] (R* >. u The nclusve ttbar MR dstrbuton (all fnal state boxes s compared aganst sngle and double b-tag su-samples u Strong dependence observed n low MR turn-on regon small shape dependence n exponentally fallng regon of MR Chrstopher Rogan - Razor Analyss Prevew

27 PF JETS MR shape dependence on B-tag requrements tt+jets Madgraph MC PFPU JETS / 4 GeV 5 All tt 4 CMS Smulaton TCHEL TCHEM TCHET TCHEL+TCHEL TCHEM+TCHEL TCHET+TCHEL / 4 GeV 5 All tt 4 CMS Smulaton TCHEL TCHEM TCHET TCHEL+TCHEL TCHEM+TCHEL TCHET+TCHEL M R* [GeV] (R* > M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. / N ALL CAT M R* [GeV] (R* >. Chrstopher Rogan - Razor Analyss Prevew

28 Movng to a ML Ft Events / 4 GeV : separate D fts performed n each box -- measurements from control samples communcated to HAD box through DATA/MC control shape scale factors and data drven normalzatons CMS - L dt = 5 pb ELE BOX DATA Total SM W+jets Z+jets Top+X ρ DATA/MC A Events / 4 GeV 4 CMS - L dt = 5 pb HAD BOX DATA Total SM QCD W+jets Z+jets Top+X LM LM M R [GeV] M R [GeV] : Smultaneous fts performed between boxes shape and normalzaton constrants between common background components accounted for drectly n ft Chrstopher Rogan - Razor Analyss Prevew

29 Example: Fully leptonc ttbar PFPU JETS t t(ν+jets Madgraph MC wth EMU Box selecton / GeV CMS Smulaton R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV -.8 / ndf χ 5.44 / 5 Prob.66 p -.68 ±. p ± γ M [GeV] R* R* (R* cut u As an example, we consder smulated ttbar events wth both W bosons decayng leptoncally u Well modeled n the EMU Box as one exponental component Chrstopher Rogan - Razor Analyss Prevew

30 PFPU JETS Example: Fully leptonc ttbar t t(ν+jets Madgraph MC / GeV CMS Smulaton R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV -.8 / ndf χ / 5 Prob.49 p ± 7.87e-5 p -.47 ±.868 / GeV CMS Smulaton R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV χ / ndf.5 / 5 Prob.66 p -.66 ±.47 p -.49 ± [GeV] γ R* M R* EE Box (R* cut γ M [GeV] R* R* MUMU Box (R* cut u Fully leptonc ttbar events have nearly dentcal MR dstrbutons (and R scalng of slopes n each of the d-lepton fnal state boxes u Result of mnmal shape bases from lepton selecton and nearly dentcal knematcs Chrstopher Rogan - Razor Analyss Prevew 9-6-

31 / GeV PFPU JETS CMS Smulaton [GeV] γ R* M R* R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV ELE Box Example: Fully leptonc ttbar t t(ν+jets -.8 / ndf χ / 5 Prob.49 p (R* cut ± 7.87e-5 p -.47 ±.868 Madgraph MC / GeV γ M [GeV] R* R* MU Box u The Fully leptonc ttbar events have nearly dentcal MR dstrbutons even between d-lepton and sngle lepton boxes 4 CMS Smulaton R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV χ / ndf / 5 Prob.64 p (R* cut ± 8.57e-5 p -.46 ±.887 u Result of mnmal shape bases from lepton selecton and nearly dentcal knematcs Chrstopher Rogan - Razor Analyss Prevew 9-6-

32 PFPU JETS Example: Fully leptonc ttbar t t(ν+jets Madgraph MC wth HAD Box selecton / GeV CMS Smulaton R* >. R* >.5 R* >. R* >.5 R* >.4 R* >.45 R* >.5 ] - Slope Parameter [GeV χ / ndf 7.96 / 5 Prob.65 p -.65 ± 8.6e-5 p ± γ M [GeV] R* R* (R* cut u The Fully leptonc ttbar events have nearly dentcal MR dstrbutons n each of the fnal states we consder, regardless of lepton flavor u Ths background component s common to all fnal states, and ts shape and normalzaton can be constraned smultaneously by each fnal state n a ft to all the fnal states Chrstopher Rogan - Razor Analyss Prevew 9-6-

33 ML Ft Strategy MU Box o Tght muon > GeV/c p µ T MUMU Box HAD Box o Veto on lepton boxes Frst, buld stand-alone fts for each fnal state self-contaned, smlar to approach ELE Box o WP8 electron p e T > GeV/c EE Box o Tght muon+ Loose muon p µ T > GeV/c p µ T EMU Box o Tght muon+ WP8 electron > GeV/c pe T > GeV/c o WP8 electron + WP95 electron p e T > GeV/c Chrstopher Rogan - Razor Analyss Prevew 9-6-

34 ML Ft Strategy: Example MU Box o Tght muon > GeV/c p µ T ELE Box o WP8 electron p e T > GeV/c

35 ML Ft Strategy: Example MUMU Box EE Box o Tght muon+ Loose muon p µ T > GeV/c p µ T EMU Box o Tght muon+ WP8 electron > GeV/c pe T > GeV/c o WP8 electron + WP95 electron p e T > GeV/c 5 Chrstopher Rogan - Razor Analyss Prevew 9-6-

36 ML Ft Strategy HAD Box o Veto on lepton boxes Chrstopher Rogan - Razor Analyss Prevew 9-6-

37 ML Ft Strategy Put t all together MU Box o Tght muon > GeV/c p µ T MUMU Box HAD Box o Veto on lepton boxes Z+jets top+x W+jets ELE Box o WP8 electron p e T > GeV/c EE Box o Tght muon+ Loose muon p µ T > GeV/c p µ T EMU Box o Tght muon+ WP8 electron > GeV/c pe T > GeV/c o WP8 electron + WP95 electron p e T > GeV/c 7 Chrstopher Rogan - Razor Analyss Prevew 9-6-

38 One more twst: R / MR D Correlatons CALO JETS Jet PD + (HLT_DJetAve HLT_DJetAve6 HLT_Jet HLT_Jet6 / GeV CMS Prelmnary - L dt = 4 pb R R R R R R R R * * * * * * * * >.5 >. >.5 >. >.5 >.4 >.45 >.5 Slope Param [/GeV] CMS Prelmnary - L dt = 4 pb χ / ndf / 5 Prob.89 p ±.75 p -.44 ± γ M [GeV] R* R*.5..5 (γ R* cut R* u In the analyss we utlzed the exponental behavor of the MR dstrbuton, observng R dependence of these exponental slopes MR / R scalng Chrstopher Rogan - Razor Analyss Prevew

39 R / MR D Correlatons CALO JETS Jet PD + (HLT_DJetAve HLT_DJetAve6 HLT_Jet HLT_Jet6 / 4 GeV M > CMS Prelmnary R M R > - M R > L dt = 4 pb M R > M R > 4 M R > 5 M R > 6 Slope Param χ / ndf. / 4 Prob.6966 p.78 ±.6 p ± R cut [GeV] u Can also look at the dstrbuton of R, as a functon of cuts on MR, whch also yelds exponentally fallng dstrbutons, wth slopes scalng wth MR -55 M R MR / R scalng ç è R / MR scalng Chrstopher Rogan - Razor Analyss Prevew

40 R / MR D Correlatons CALO JETS Jet PD + (HLT_DJetAve HLT_DJetAve6 HLT_Jet HLT_Jet6 / 4 GeV 4 CMS Prelmnary γ M > R* R* γ M > R* R* - L dt = 4 pb γ M > R* R* γ M > R* R* γ M > 4 R* R* γ M > 5 R* R* γ M > 6 R* R* Slope Param χ / ndf 8.84 / 5 Prob.59 p 6.65 ±.8957 p -.6 ± (R* γ M cut [GeV] R* R* u Can also look at the dstrbuton of R, as a functon of cuts on MR, whch also yelds exponentally fallng dstrbutons, wth slopes scalng wth MR MR / R scalng ç è R / MR scalng Chrstopher Rogan - Razor Analyss Prevew

41 D Fts slde u stuff from Y Chrstopher Rogan - Razor Analyss Prevew

42 Sngle Mu calo PF Events / 4 GeV 4 DATA CMS Prelmnary - L dt = 49 pb SM MC W+jets top+x Z+jets DBosons Events / 4 GeV 5 4 CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons γ M [GeV] (R* >.45 R* R* γ M [GeV] (R* >.45 R* R* Chrstopher Rogan - Razor Analyss Prevew

43 MUMU Events / 4 GeV CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets Events / 4 GeV DBosons 4 CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons γ M [GeV] (R* >.5 R* R* γ M [GeV] (R* >.5 R* R* Chrstopher Rogan - Razor Analyss Prevew

44 EE Events / 4 GeV CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons Events / 4 GeV 4 CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons γ M [GeV] (R* >.5 R* R* γ M [GeV] (R* >.5 R* R* Chrstopher Rogan - Razor Analyss Prevew

45 EMU Events / 4 GeV CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons Events / 4 GeV CMS Prelmnary - L dt = 49 pb DATA SM MC W+jets top+x Z+jets DBosons γ M [GeV] (R* >. R* R* γ M [GeV] (R* >. R* R* Chrstopher Rogan - Razor Analyss Prevew

46 Outlook Chrstopher Rogan - Razor Analyss Prevew

47 BACKUP SLIDES Chrstopher Rogan - Razor Analyss Prevew

48 u Strongly nteractng spartcles (squarks, glunos domnate producton SUSY n Jets + MET Fnal States u If heaver than sleptons, gaugnos cascade decays to LSP u Long decay chans and large mass dfferences between SUSY states Many hgh p T objects (leptons, jets u R-party conservaton LSP stable (DM canddate and spartcles par-produced Large mssng transverse momentum (MET Consder R-party Conservng SUSY: q q q q MET + jets + X fnal states q q q χ χ q Chrstopher Rogan - LPC Topc of the Week - Aprl 5, 48

49 q SUSY n Jets + MET Fnal States Consder canoncal d-squark è jets + MET: q q (q χ (q χ Φ q Scale: SUSY Sgnatures: In squark rest frames, fnal state objects have momentum equal to: q q Angle: M = m q m χ m q Comng from dfferent decays, vsble and nvsble partcles do not necessarly balance χ χ C. Rogan - Status of Hggs and BSM Searches at the LHC - - Aprl Dfferent searches explot these consderatons n dfferent ways 49

50 Motvaton u Let s consder a SUSY d-jet fnal state topology where two squarks are produced and each decay to a quark and an LSP x z Characterstc scale of process s reflected n momenta of quarks and LSP s Squarks are heavy, so they are preferentally produced near threshold (γ CM The d-squark rest frame s approxmately related to the lab frame by one longtudnal boost Chrstopher Rogan - LPC Topc of the Week - Aprl 5, 5

51 M R Dervaton arxv:6.77v [hep-ph] n Let s assume that, such that and both squarks are at rest n the d-squark rest-frame n Even wthout observng the two LSP s drectly, we can move from the laboratory frame to the d-squarks rest frame through a longtudnal boost that takes us to a reference frame where the magntude of the two jets momenta s equal - we wll call ths reference frame the rough-approxmaton -frame or R-frame n We denote the magntude of the jets momenta n the R-frame as M R and the boost movng from the lab frame to the R-frame as β R : Chrstopher Rogan - LPC Topc of the Week - Aprl 5, 5

52 Propertes of M R u Returnng to the d-squark example: Æ s nvarant under longtudnal boosts (ndependent of Æ If then u We fnd that, even f devates from (whch t wll n practce that stll peaks n For QCD d-jets (assumng no msmeasurements, no p T to djet system etc. Conceptually, we expect to see a peakng sgnal over a steeply fallng background Chrstopher Rogan - LPC Topc of the Week - Aprl 5, 5

53 A Tale of * Reference Frames Let s consder d-squark è jets + MET: q q (q χ (q χ squark rest frame d-squark (CM rest frame lab frame q q χ β CM q β CM β T q q q x z Characterstc scale of process s reflected n momenta of quarks and LSP s Squarks are heavy, so they are preferentally produced near threshold (γ CM β T The d-squark rest frame s approxmately related to the lab frame by one longtudnal boost Chrstopher Rogan - RAZOR Meetng -5-5

54 The R-Frame Approxmaton: Let s consder d-squark è jets + MET: q q (q χ (q χ squark rest frame d-squark (CM rest frame lab frame q q χ β CM q β CM βt q q q x z We assume: We can solve for : γ CM =( β CM = β T = Defne MR as the jets momenta n R-Frame:

55 A Tale of * Reference Frames Let s consder d-squark è jets + MET: q q (q χ (q χ squark rest frame d-squark (CM rest frame lab frame q q χ β CM q β CM βt q q q x z Sometmes, the fact that β CM = can result n non-physcal values of Chrstopher Rogan - RAZOR Meetng -5-

56 The R* Frame(s Approxmaton Let s consder d-squark è jets + MET: q q (q χ (q χ squark rest frame d-squark (CM rest frame lab frame q q χ β CM q β CM βt q q q x z We assume: β CM ẑ = a longtudnal boost β T = So now, we have two boosts takng the jets from the lab frame to the R* frames: βl a transverse boost β R T whch s appled n opposte drectons for the two jets We requre that the magntude of the jets momenta s equal n ther respectve R* frames

57 The R* Frame(s Approxmaton Let s consder d-squark è jets + MET: q q (q χ (q χ squark rest frame d-squark (CM rest frame lab frame q q χ β CM q β CM βt q q q x z We assume: β CM ẑ = a longtudnal boost β T = So now, we have two boosts takng the jets from the lab frame to the R* frames: βl a transverse boost β R T whch s appled n opposte drectons for the two jets We requre that the magntude of the jets momenta s equal n ther respectve R* frames ths momenta s: M R

58 MR* Usng the R*-frame varables, we have two peces of nformaton: a.u..8.6 = 7 GeV M H M H M H M H Ex.: = GeV = GeV = 5 GeV a.u..8.6 γ R γ R = M H M H M H M H M R and β T R = 7 GeV = GeV = GeV = 5 GeV M R* / M W γ M / M R* R* H Chrstopher Rogan - RAZOR Meetng -5-58

59 PU dependence / 4 GeV CALO JETS CMS Smulaton ttbar+jets Madgraph MC n HAD Box Inclusve [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU / 4 GeV 5 4 PF JETS 6 Inclusve CMS Smulaton [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU / 4 GeV 6 CMS Smulaton Inclusve 5 4 PFPU JETS [,] PU [4,5] PU [6,8] PU [9,] PU [,6] PU [6,7] PU M R* [GeV] (R* > M R* [GeV] (R* > M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 u Here, we look for PU dependence as a functon of the number of generated PU nteractons (PU Chrstopher Rogan - Razor Analyss Prevew

60 PU dependence / 4 GeV 4 ttbar+jets Madgraph MC n ELE Box PF JETS PFPU JETS CMS Smulaton Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV / 4 GeV 4 CMS Smulaton Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV INCL / N PV PV [GeV] (R >.5 M R INCL / N PV PV [GeV] (R >.5 M R M R [GeV] (R >.5 Chrstopher Rogan - Razor Analyss Prevew

61 / 4 GeV PF JETS CMS Smulaton PU dependence ttbar+jets Madgraph MC n MU Box Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV / 4 GeV PFPU JETS CMS Smulaton Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* > M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 Chrstopher Rogan - Razor Analyss Prevew

62 / 4 GeV 5 4 PF JETS CMS Smulaton PU dependence W+jets Madgraph MC n ELE Box Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV / 4 GeV 5 PFPU JETS Inclusve CMS Smulaton [,] PV 4 [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* > M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 Chrstopher Rogan - Razor Analyss Prevew

63 / 4 GeV 5 4 PF JETS CMS Smulaton - L dt = pb PU dependence W+jets Madgraph MC n MU Box Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV / 4 GeV 5 4 PFPU JETS CMS Smulaton - L dt = pb Inclusve [,] PV [4,5] PV [6,8] PV [9,] PV [,6] PV [6,7] PV M R* [GeV] (R* > M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 INCL / N PV PV M R* [GeV] (R* >.5 Chrstopher Rogan - Razor Analyss Prevew