CDF II Exotics Group Public Page


Please contact conveners in case of questions: David Toback

Published Run 2 Results
2012 publications are highlighted in blue

(Complete List of CDF publications can be found here)

Signature-based

Search Result Dataset Publication Date
Monojet+MET Observation consistent with SM expectation
6.7 fb-1
PRL 108, 211804 (2012) 2012/05/24
Diphoton + X
(X = e, μ, γ, missing ET, τ) 		Observation consistent with SM expectation
1.0 - 2.0 fb-1
PRD 82, 052005 (2010) 10/21/09
Exclusive Dijets + Missing Energy
Observation consistent with SM expectation. Limits on:
scalar LQ masses: m>190(178) GeV, 1st or 2nd (3rd) gen., β = 0
MSSM msquark,mgluino: 4 benchmark points 		2.0 fb-1 PRL 105, 131801 (2010) 9/20/2010
γ + b + jet + Missing ET
617 (637 ± 139) events observed (expected)
2.0 fb-1
PRD 80, 052003 (2009)
9/16/09
FCNC top decays using ratio of Z+4 Jets to W+4 Jets production
upper limit of 8.3% (95% C.L.) on t-->Zc BR
1.5 fb-1
PRD 80, 052001 (2009)
9/16/09
Lepton + Photon + b-Jet + Missing ET
28 (27.9 + 3.6 -3.5) events observed (expected)
HT > 200 GeV, Njets > 2:
16 (11.1 + 2.3 - 2.1) events observed (expected)
1.9 fb-1
PRD 80, 011102 (2009)
5/15/08
Global Search (Vista/Sleuth/Bump Hunter)
New physics not discovered in 2.0 fb-1
2.0 fb-1
PRD 79, 011101 (2009)
2/28/08
Global Search (Vista + Sleuth)
New physics not discovered in 927 pb-1
927 pb-1
PRD 78, 012002 (2008)
12/15/07
Lepton + Photon + X
(X = e, μ, γ, Missing ET)
ll'γ: 74 (66.1 ± 7.7) events observed (expected)
lγ MET: 163 (151 ± 13) events observed (expected)
lγγ: 0 (0.62 ± 0.15) events observed (expected)
929 pb-1
 PRD 75, 112001 (2007) 6/28/07
Lepton + Photon + X
(X = e, μ, Missing ET)
llγ: 42 (37.3 ± 5.4) events observed (expected)
lγ MET: 31 (23.0 ± 2.7) events observed (expected)
305 pb-1
 PRL 97, 031801 (2006)
7/17/06

High Mass Resonances (Z', W', Graviton, Sneutrino, Techniparticle)

Search Result Dataset Publication Date
RS Graviton to ee (+diphotons) Mgraviton > 1058 GeV (k/MPl = 0.1)
5.7 fb-1
PRL 107, 051801 (2011) 7/30/11
3-jet resonances -- 3.2 fb-1
PRL 107, 042001 (2011) 7/22/11
W' search m(W') > 1.12 TeV (Manifest LR symmetric model) 5.3 fb-1
PR D83:031102 (2011) 3/9/11
RS Graviton to diphotons Mgraviton > 963 GeV (k/MPl = 0.1)
5.4 fb-1
PR D83:011102 (2011) 1/1/11
WW/WZ (eνjj) Channel mZ' > 545 GeV
mW' > 515 GeV
mgraviton > 606 GeV 		2.9 fb-1
PRL 104, 241801 (2010) 01/14/10
γγ Channel mHf > 106 GeV (Fermiophobic Couplings)
3.0 fb-1
PRL 103, 061803 (2009)
5/1/09
tb Channel (W') mW' > 800 GeV for mW' > mνR
mW' > 825 GeV for mW' < mνR
1.9 fb-1
PRL 103, 041801 (2009) 8/1/09
Dijet Channel Excited quark exclusion m = 260 - 870 GeV
Color-octet technirho exclusion m = 260 - 1100 GeV
Axigluon, flavor-universal coloron exclusion m = 260 - 1250 GeV
E6 diquark exclusion m = 290 - 630 GeV
1.1 fb-1
PRD 79, 112002 (2009) 3/19/08
μμ Channel mZ' > 1030 GeV (SM couplings)
mgraviton > 921 GeV (k/MPl = 0.1) 		2.3 fb-1
 PRL 102, 091805 (2009) 10/21/08
ee Channel Most significant excess at mee ≈ 240 GeV (3.8σ)
mZ' > 966 GeV (SM couplings)
mgraviton > 850 GeV (k/MPl = 0.1) 		2.5 fb-1
PRL 102, 031801 (2009) 3/6/08
ZZ Channel (four electrons) σ x BR(G* --> ZZ) < 4-6 pb for various M(G*) 1.1 fb-1 PRD 78, 012008 (2008) 6/15/06
ee Channel (Z' and RS Graviton) mZ' > 923 GeV (SM couplings)
mgraviton > 807 GeV (k/MPl = 0.1) 		1.3 fb-1
 PRL 99, 171802 (2007) 10/22/07
γγ Channel (RS Graviton) mgraviton > 850 GeV (k/MPl = 0.1) 1.2 fb-1 PRL 99, 171801 (2007) 10/22/07
eν Channel (W') mW' > 788 GeV (LRSM) 205 pb-1 PRD 75, 091101 (2007) 5/1/07
eμ Channel (Z' and Sneutrino) msneutrino > 300 GeV for λ'311 ≥ 0.01 and λ132 ≥ 0.02
mZ' > 700 GeV for LFV coupling Q12l = 0.1 (η model) 		344 pb-1 PRL 96, 211802 (2006) 5/30/06
ee Channel (Z') mZ' > 850 GeV (SM couplings) 0.45 fb-1
 PRL 96, 211801 (2006) 5/30/06
ee and μμ Channels
(Z', Graviton, Sneutrino, Techniparticle) 		msneutrino > 680 (665) GeV for λ2Br = 0.01 in ee (μμ) channel
mZ' > 825 GeV (SM couplings)
mρTC (ωTC) > 280 (270) GeV, MV = MA = 500 (400) GeV
mgraviton > 710 GeV (k/MPl = 0.1) 		200 pb-1 PRL 95, 252001 (2005) 12/12/05
ττ Channel (Z' and Sneutrino) mZ' > 399 GeV (SM couplings)
msneutrino > 377 GeV for λ2Br = 0.01 		195 pb-1
 PRL 95, 131801 (2005) 9/21/05

SUSY

Search Result Dataset Publication Date
Squark and/or Gluino Production
Direct Sbottom Pair production
in Jets + Missing ET 		Exclude msbottom up to 230 GeV (238 GeV/c2)
for mneutralino below 80 GeV/c2 (40 GeV/c2) 		2.65 fb-1 PRL 105, 081802 (2010) 10/4/10
Stop → b + chargino
in Dilepton + Jets + Missing ET 		Cross section limits for stop masses of 115 - 197 GeV 2.7 fb-1 PRL 104, 251801 (2010) 5/21/09
Gluino → sbottom + bottom
in 4 b-Jets + Missing ET 		mgluino > 350 GeV
for msbottom = 300 GeV, mχ = 60 GeV, msquark = 500 GeV 		2.5 fb-1 PRL 102, 221801 (2009) 8/21/08
Squarks and Gluinos in Jets + Missing ET m > 392 GeV for m = msquark = mgluino
mgluino > 280 GeV for msquark up to 600 GeV 		2.0 fb-1 PRL 102, 121801 (2009) 2/14/08
Stop and Sbottom in 2 b/c Jets + Missing ET mstop > 132 GeV for mneutralino = 48 GeV
msbottom > 193 for mneutralino = 40 GeV 		295 pb-1
 PRD 76, 072010 (2007) 10/25/07
Gluino → sbottom + bottom
in 4 b-jets + Missing ET 		mgluino > 270 GeV
for msbottom < 220 GeV and mgluino - msbottom > 6 GeV 		156 pb-1 PRL 96, 171802 (2006) 5/4/06
Chargino + Neutralino Production
Unified Trilepton and Dilepton + Track
 mchargino > 145 GeV (mSUGRA, m0=60, tanβ=3, A0=0, μ>0)
Trilepton: 1 (0.9 ± 0.1) events observed (expected)
Dilepton+Track: 6 (5.5 ± 1.0) events observed (expected)
2.0 fb-1 PRL 101, 251801 (2008) 1/10/08
Low pT μ + μ + l (l=e or μ)
 1 (0.4 ± 0.1) events observed (expected) 976 pb-1 PRD 79, 052004 (2009) 9/14/06
High pT e l l and μ l l Channels (l=e or μ) e l l: 0 (0.9 ± 0.1) events observed (expected)
μ l l: 1 (1.4 ± 0.3) events observed (expected) 		e l l: 1.0 fb-1
μ l l: 0.7 fb-1 		PRD 77, 052002 (2008)
(arXiv:0711.3161)
 3/7/08
Like-Sign Dilepton Channel
(One High PT e or μ)
 13 (7.8 ± 1.1) events observed (expected) 1.0 fb-1
 PRL 98, 221803 (2007) 6/1/07
Combination of Searches
in 2 or 3 Leptons + Missing ET
mchargino > 129 GeV in the MSSM
0.7 - 1.1 fb-1
 PRL 99, 191806 (2007)
Public note 		11/9/07
GMSB
Gaugino Pair Production
in Diphoton + Missing ET
 mneutralino > 149 GeV for τneutralino < 1 ns
 2.6 fb-1 PRL 104, 011801 (2010) 10/08/09
Long-Lived Neutralinos Decaying to γ G
in the γ + Jet + Missing ET Channel 		mneutralino > 101 GeV for τneutralino = 5 ns 570 pb-1 PRD 78, 032015 (2008)
PRL 99, 121801 (2007) 		4/7/08
Chargino + Neutralino Production
in the γ γ + Missing ET Channel 		mchargino > 167 GeV (mneutralino > 93 GeV)
202 pb-1 PRD 71, 031104 (2005) 2/18/05
Rare Decays and Stable particles
Long-Lived Stop Production
 mstop > 250 GeV 1.0 fb-1 PRL 103, 021802 (2009) 2/8/07
Bs and Bd → μ μ
 BR(Bs → μ μ) < 5.8 x 10-8
BR(Bd → μ μ) < 1.8 x 10-8
 2 fb-1
 PRL 100, 101802 (2008) 3/14/08
Bs and Bd → μ μ
 BR(Bs → μ μ) < 2.0 x 10-7
BR(Bd → μ μ) < 5.1 x 10-8
 364 pb-1
 PRL 95, 221805 (2005) 11/23/05
Bs and Bd → μ μ
 BR(Bs → μ μ) < 7.5 x 10-7
BR(Bd → μ μ) < 1.9 x 10-8
 171 pb-1
 PRL 93, 032001 (2004) 7/13/04
R-parity Violation
Stop Decay to bτ
 mstop > 153 GeV
322 pb-1
 PRL 101, 071802 (2008) 2/26/08
LSP Decay via λ121 and λ122
in the 3 or 4 Lepton Channel (e or μ) 		mneutralino > 101 GeV, mchargino > 192 GeV 346 pb-1 PRL 98, 131804 (2007) 3/30/07

Technicolor

Search Result Dataset Documentation Last Update
ρT → πTW (W → lν, πT b-bbar) Exclusion region for mρT from 180-250 GeV
(depending on mπT)
1.9 fb-1
PRL 104, 111802 (2010) 04/11/08

Flavor-Violating Couplings

Search Result Dataset Documentation Last Update
New scalars in same-sign tops
ξ < 0.85 (mη = 200 GeV) 2.0 fb-1 PRL 102, 041801 (2009)
 5/8/08

Leptoquarks

Search Result Dataset Publication Date
3rd generation Vector LQ in Ditau + Dijets
mLQ > 317 GeV (β = 1, Y-M couplings) 322 pb-1 PRD 77, 091105 (2008) 6/19/07
2nd Generation Scalar LQ in
Dimuon + Dijets and
Muon + Missing ET + Dijets
(Combination) 		LQ > 226 GeV (β = 1)
mLQ > 208 GeV (β = 0.5)
mLQ > 143 GeV (β = 0.1) 		198 pb-1 PRD 73, 051101 (2006) 3/1/06
1st Generation Scalar LQ in
Dielectron + Dijets and
Electron + Missing ET + Dijets
(Combination) 		mLQ > 236 GeV (β = 1)
mLQ > 205 GeV (β = 0.5)
mLQ > 145 GeV (β = 0.1) 		203 pb-1 PRD 72, 051107 (2005) 9/29/05
1st and 2nd Generation Scalar LQ
in Dijets + Missing ET 		mLQ > 117 GeV (β = 0)
 191 pb-1
 PRD 71, 112001 (2005) 6/10/05

Extra Dimensions and Monopoles

Search Result Dataset Publication Date
Photon + missing ET and
Combination with Jet + missing ET
 		MD > 1.08 TeV for n = 2 (Photon only);
MD > 0.90 TeV for n = 6 (Photon only);
MD > 1.42 TeV for n = 2 (Combined);
MD > 0.95 TeV for n = 6 (Combined) 		1.1 - 2.0 fb-1
PRL 101:181602 (2008)
2/21/08
Jet + missing ET
 		MD > 1.31 TeV (R < 0.28 mm) for n = 2;
MD > 0.88 TeV (R < 3.2 x 10-11 mm) for n = 6 		1.1 fb-1
Published with Photon + missing ET
5/24/07
Large Extra Dimensions in Jet + missing ET
 		M > 1.18 TeV (R < 0.35 mm) for n = 2;
M > 0.83 (R < 3.4 x 10-11 mm) for n = 6 		368 pb-1
PRL 97, 171802 (2006) 10/24/06
Magnetic Monopoles σ < 0.2 pb for mmonopole = 200 - 700 GeV 36 pb-1 PRL 96, 201801 (2006) 5/26/06

New or Excited Fermions

Search Result Dataset Publication Date
b' and B/T5/3 in same-charge dileptons mb' or mB > 338 GeV
mB,T5/3 > 365 GeV 		2.7 fb-1
PRL 104, 091801 (2010) 3/27/09
b' Quarks in the Z + Jets Channel mb' > 268 GeV for Br(b' → bZ) = 100% 1.06 fb-1
PRD 76, 072006 (2007) 10/18/07
Excited Muon in μμγ
mμ* > 853 GeV (contact interaction model, Λ = mμ*)
mμ* > 410 GeV (gauge-mediated model, f/Λ = 10-2 GeV-1) 		371 pb-1
PRL 97, 191802 (2006) 11/9/06
Excited Electron in eeγ
me* > 879 GeV (contact interaction model, Λ = me*)
me* > 430 GeV (gauge-mediated model, f/Λ = 10-2 GeV-1) 		202 pb-1
PRL 94, 101802 (2005) 3/16/05

Run I Exotics results

David Toback
Last modified: June 7, 2012