[ns] ATLAS Preliminary. [GeV] Observed 95% CL limit (±1 theory. ) Expected 95% CL limit (±1 exp ) ATLAS, Eur.Phys.J.C
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1 A A" A"
2 τ χ±!τ χ± - L dt = 4.7 fb, s = 7 ev SUSY Observed 95% CL limit (± theory ) Expected 95% CL limit (± exp ) ALAS, Eur.Phys.J.C (m < 32 ev, m <.5 ev, fb ) 3/2 LEP2 exclusion -! ± Stable [GeV] [ns] ± χ m ± χ
3 m B : m W : m g 3::8 Charged"wino track O(&)"pb"for"GeV" chargino" " (disappearing"track)" Ini>al"state"radia>on"(ISR)" Neutral"wino (Missing"E )"
4 Radius [mm] eV% R SC Efficiency 2 Pixel.2-2 η τ ηη!η!
5 Events / 45GeV ALAS Work in progress - DAA 22, 2.3 fb SM otal W l Z Z ll tt and single top ± m( ) = 2 GeV, ( ) =.2 ns ± st Jet p [GeV] racks #" ! Data ( s = 8 ev, SM MC prediction m ± m ± = 2 GeV, = 2 GeV, ± ± =.2 ns =.2 ns - Ldt = 2.3 fb ) (Decay radius < infinite) (Decay radius < 563 mm) N R
6 η η! Impact" parameter Probability Hole defini*on d " "<".mm" z sinθ" "<".5mm" "!"Probability(chi2,ndf)">". "!"N(Pixel/SC"hole)"=" Isola>on Overlap" removal defini*on dr<.4"!"p cone4"/"p " <".4 "!"dr(jets,"track)">".4"
7 #" racks!τν Interacting Hadron Mismeasured track AMSB Chargino emplate Fit rack p
8 #" racks! Interacting Hadron Mismeasured track AMSB Chargino emplate Fit rack p
9 ! racks / GeV - -4 ratio d <.mm.mm < d <.mm rack p [GeV] racks / GeV #" Significance x -b " - s = 8 ev, L dt = 2.3 fb rack p [GeV]
10 τ selec>on CR"(Non&Interac>ng) SR"(Interac>ng) ra>o" τ rack p [GeV] racks / GeV #" Significance s = 8 ev, L dt = 2.3 fb a a 2 +a 3 ln(x) (x+a ) /x rack p [GeV]
11 N lep (p ) = N lep (p ) CR SR ( ε ID ) P(N R < 5) ε ID!µµ dis e, µ P ( ε ID ) P(N R < 5) s = 8 ev, - L dt = 2.3 fb Electron Muon rack p [GeV] racks / GeV #" ALAS Work in Progress s = 8eV, Ldt = 2.3 fb - Electron Muon rack p [GeV]
12 racks / GeV Data / Fit s = 8eV, Ldt = 2.3 fb - Data otal background Interacting Hadron p -mismeasured track Electron Muon m = 2 GeV, =.2 ns ± ± m = 3 GeV, =.2 ns ± ± m = 3 GeV, =. ns ± ± track p [GeV] rack p [GeV] Mismeasured% track% 22" ±"33" Data otal background Interacting Hadron p -mismeasured track Electron Muon m = 2 GeV, ± ± =.2 ns m = 3 GeV, ± ± =.2 ns m ± = 3 GeV, ± =. ns Interac*ng% hadron% 287"" ±"7" electron% muon% BG% Data% 852" ±"35" 23" ±"8" 3274"" ±"86" 3256"
13 χ ± [ns] - χ χ - L dt = 2.3 fb, s = 8 ev Observed 95% CL limit (± theory ) Expected 95% CL limit (± exp ) - ALAS ( s = 7 ev, 4.7 fb, EW prod.) LEP2 exclusion ± Stable m [GeV] ± tan = 5, µ > χ χ χ " [MeV] m χ χ χ - L dt = 2.3 fb, s = 8 ev Observed 95% CL limit (± theory ) Expected 95% CL limit (± exp ) - ALAS ( s = 7 ev, 4.7 fb, EW prod.) LEP2 exclusion heory (Phys.Lett.B72 (23) 2526) ± Stable m [GeV] ± tan = 5, µ > χ Δm χ!
14 Δm χ
15
16 ) / rue p - rue p (rack p rue p [GeV] ) / rue p - rue p (rack p rue p [GeV] ) / rue p - rue p (rack p rue p [GeV] N SC ) Pixel Number of silicon hits (N Decay radius (mm)
17 ! racks / GeV - p - mismeasured track control sample SM MC prediction, d <. mm -3-4 ratio s = 8 ev, - L dt = 2.3 fb rack p [GeV]
18 ABLE III. Numbers of observed and expected background events as well as the probability that a background-only experiment is more signal-like than observed (p ) and the model-independent upper limit on the visible cross-section (σvis 95% )at95%cl. p track > 75 GeV p track > GeV p track > 5 GeV p track > 2 GeV Observed events Expected events 48.5 ± ± ± ± 4.6 p value Observed σvis 95% [fb] Expected σvis 95% [fb] tanβ = 5, µ >
19 racks s = 8 ev, L dt = 2.3 fb DAA, 5 GeV < p < 75 GeV DAA, 75 GeV < p < 2 GeV DAA, p > 2 GeV m ± = 2 GeV, ± =.2 ns N(SC) m ± = 2 GeV, ± = ns racks s = 8 ev, L dt = 2.3 fb DAA, 5 GeV < p < 75 GeV DAA, 75 GeV < p < 2 GeV DAA, p > 2 GeV m ± = 2 GeV, ± =.2 ns N(R Outlier) m ± = 2 GeV, ± = ns racks.2.8 DAA, 5 GeV < p DAA, 75 GeV < p DAA, p m ± > 2 GeV = 2 GeV, ± < 75 GeV < 2 GeV =.2 ns racks.2.8 DAA, 5 GeV < p DAA, 75 GeV < p DAA, p m ± > 2 GeV = 2 GeV, ± < 75 GeV < 2 GeV =.2 ns.6.4 s = 8 ev, - L dt = 2.3 fb.6.4 s = 8 ev, - L dt = 2.3 fb [GeV] cone4 E clus E [GeV] R<.4
20 [ns] ± - Discovery, 2 fb - Exclusion, 2 fb - Discovery, fb - Exclusion, fb s = 4 ev [GeV] m ±
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