IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Carmine Elvezio PagliaroneCarmine Elvezio PagliaroneINFN PisaINFN Pisa
((on on behalfbehalf of of CDFCDF & & D0D0 ))
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
the CDFII the CDFII CollaborationCollaboration
CDF physicists
US 63%
Taiwan3%
Germany2%
Canada3%
Italy20%
Japan9%
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
DD
Main InjectorMain Injectorand Recyclerand Recycler
p sourcep source
BoosterBooster
Fermilab Tevatron ColliderFermilab Tevatron Collider
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
The Fermilab Accelerator ComplexThe Fermilab Accelerator Complex•• Main Injector (150 GeV proton Main Injector (150 GeV proton
storage ring) replaces Main Ring storage ring) replaces Main Ring (the original accelerator);(the original accelerator);
•• Completely revamped stochastic Completely revamped stochastic cooling system for antiprotons;cooling system for antiprotons;
•• A new permanent magnet Recycler A new permanent magnet Recycler storage ring for antiprotons;storage ring for antiprotons;
•• Increased number of p and pIncreased number of p and p--bar bar bunches :bunches :
6 6 36 (396 ns)36 (396 ns)
•• Higher center of mass energy Higher center of mass energy 2 TeV2 TeV achivedachived increasing the increasing the beam Energiesbeam Energies
900 900 980 GeV980 GeV
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
( ) ( ))(1
,,,,,3 *
*0
pp
zppyx
p
pr FNBNf
p
εε
σεεθθβεβ
γ
+
=LTotal AntiprotonsTotal Antiprotons p per bunchp per bunch
NpNBNp
Tevatron Collider ImprovementsTevatron Collider Improvements
Physics Physics OpportunitesOpportunites•• TopTop•• HiggsHiggs•• QCDQCD•• ElectroweakElectroweak•• B PhysicsB Physics•• New New PhenomenaPhenomena
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Tevatron Performances Tevatron Performances vsvs Expected LuminosityExpected Luminosity
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
CDF Integrated Luminosity
D0D0CDFCDFPhysics LuminosityPhysics Luminosity
84 pb84 pb--11 (since April 02)(since April 02)130 pb130 pb--11
180 pb180 pb--11Delivered LuminosityDelivered Luminosity
Status of CDF & D0 DetectorsStatus of CDF & D0 Detectors
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Short term Luminosity ProspectsShort term Luminosity Prospects
–– Massive effort put into understanding and improving Massive effort put into understanding and improving LuminosityLuminosity
•• Fixed Accumulator Fixed Accumulator MI opticsMI optics•• Much work on stabilizing tunes in injection and low beta Much work on stabilizing tunes in injection and low beta
squeezesqueeze•• Fight large antiproton Fight large antiproton emittancesemittances•• Work on accumulator lattice to reduce beam heatingWork on accumulator lattice to reduce beam heating
–– Max luminosity achievable Max luminosity achievable without Recycler ~8x10without Recycler ~8x103131
–– Need recycler to get to Need recycler to get to 22 xx 10103232
•• full benefits of Recycler later onfull benefits of Recycler later on
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
EndplugEndplug CalorimeterCalorimeterTrackingTracking
Layer 00 Layer 00 SVX IISVX IIISLISLCOTCOT
Front End ElectronicsFront End ElectronicsTrigger (Trigger (pipelinedpipelined))DAQ SystemDAQ SystemMuon SystemsMuon SystemsLuminosityLuminosity MonitorMonitorTOFTOFOfflineOffline SoftwareSoftware
SUSY02, SUSY02, HamburgHamburg
COTCOT
SiSi trackingtracking
CMX Mini skirt
IMU
CMX
CMP
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
•• Central Outer Tracker (COT)Central Outer Tracker (COT): : –– open cell drift chamber open cell drift chamber –– maximum drift time 100nsmaximum drift time 100ns
•• Small cell size, Fast gasSmall cell size, Fast gas–– single hit resolution ~200 single hit resolution ~200 µµmm–– excellent pattern recognition excellent pattern recognition –– improved stereo capabilitiesimproved stereo capabilities
•• Silicon Tracker System:Silicon Tracker System:–– increased increased zz coverage (length ~ 1m) coverage (length ~ 1m) –– ηη coverage up to coverage up to | | ηη | < 2 | < 2 –– 33--DD track reconstruction track reconstruction –– impact parameter resolution impact parameter resolution
•• σσφφ < 30 < 30 µµmm•• σσzz < 60 < 60 µµmm
•• 3 different detectors: 3 different detectors: ≈750,000 channels≈750,000 channels–– L00:L00: inner most, R= 2.5 cm, inner most, R= 2.5 cm, radrad--hard, SShard, SS–– SVXII:SVXII: 5 layers, 3<R<10 cm, DS (90 and 5 layers, 3<R<10 cm, DS (90 and sassas))–– ISL:ISL: 2 layers, 10<R<20 cm and large 2 layers, 10<R<20 cm and large η, η, DSDS
The CDFII Tracking SystemThe CDFII Tracking System
COT into CDFIICOT into CDFII
Trigger SystemTrigger System:: two main two main improvements improvements ••XFT: track reconstruction at L1XFT: track reconstruction at L1••SVT: displaced track triggering at L2SVT: displaced track triggering at L2
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
•• Improved z coverage of Silicon tracker Improved z coverage of Silicon tracker +50% of Run I geometrical acceptance (+50% of Run I geometrical acceptance (……top)top)
•• 3D 3D vertexingvertexing capabilities capabilities better fake rejectionbetter fake rejection
•• Track reconstruction can be extended to Track reconstruction can be extended to 1<1<ηη<2 <2 several major effects:several major effects:–– bb--taggingtagging (recover ~30% of (recover ~30% of bb’’ss in in tttt events)events)–– lepton IDlepton ID (electrons in Plug calorimeter)(electrons in Plug calorimeter)
•• Increased muon system acceptance by 12% Increased muon system acceptance by 12% affects trigger, ID and SLT efficiencyaffects trigger, ID and SLT efficiency
Run II detector improvementsRun II detector improvements
13131313SLT(bSLT(b--jet)jet)65654444SVX(bSVX(b--jet)jet)
Run IIRun IIRun IRun IEfficiencies (%)Efficiencies (%)
IFAE 2003,IFAE 2003, LecceLecce Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
CDFCDF--II StatusII Status
•• Detector:Detector:–– All systems installed and commissioned;All systems installed and commissioned;
•• DAQ and trigger:DAQ and trigger:–– Running physics trigger table with Running physics trigger table with > 100> 100 trigger paths since Feb ‘02trigger paths since Feb ‘02
•• NewNew SVTSVT very successfulvery successful–– Typical running conditions:Typical running conditions:
•• L1L1: : 3.5KHz3.5KHz L2: L2: 200 Hz200 Hz L3: L3: 20 Hz20 Hz
•• Data processing:Data processing:–– Reconstruction farm keeps up with data loggingReconstruction farm keeps up with data logging–– Physics groups skim data:Physics groups skim data:
•• Observe signals from low and high PObserve signals from low and high PTT triggers: J/triggers: J/ψψ, D, B, W, Z, D, B, W, Z
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
•• Standard Model Standard Model accomodatesaccomodates but does but does not explain:not explain:
–– EWSBEWSB–– CPCP--ViolationViolation–– Fermion MassesFermion Masses
•• Higgs selfHiggs self--coupling is positive which coupling is positive which leads to a triviality problem that leads to a triviality problem that bound Mbound MH H from abovefrom above
•• The natural MThe natural MHH value is L, the scale value is L, the scale of new of new physiscsphysiscs; if SM is the ultimate ; if SM is the ultimate theory up to GUT scale, an extremely theory up to GUT scale, an extremely precise fine tuning is required; precise fine tuning is required;
Extremely preciseExtremely precise
But also many open questionsBut also many open questionsSM SM gioiegioie e e doloridoloriSM SM gioiegioie e e doloridolori
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Many Searches for New PhenomenaMany Searches for New Phenomena
•• SUSY in many different Scenarios:SUSY in many different Scenarios:–– MSSM MSSM –– mSUGRAmSUGRA–– 33rdrd Generation/High Generation/High tantanββ–– RPVRPV–– GMSBGMSB–– AMSBAMSB
•• LFV also in the Higgs Sector;LFV also in the Higgs Sector;•• Large Extra Dimensions:Large Extra Dimensions:
–– ADDADD–– RandallRandall--SundrumSundrum
•• LeptoquarksLeptoquarks•• CompositnessCompositness
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Advances on Tau ID & Advances on Tau ID & Searches with Searches with TausTaus in the in the
Final stateFinal state
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
TausTaus in Run IIin Run II•• Many searches with Many searches with taustaus in the final state;in the final state;•• TausTaus were traditionally more “difficult” for were traditionally more “difficult” for
both experiments;both experiments;•• Needs of a significant improvement;Needs of a significant improvement;•• CDF Lepton+Track (LT) Triggers (5)CDF Lepton+Track (LT) Triggers (5)::•• Implemented single tau and Implemented single tau and DitauDitau Triggers (5):Triggers (5):
–– ττ + MET, + MET, –– ττhh + + ττll (l= e, (l= e, µµ))–– ττhh ττhh
•• lepton+Tracklepton+Track Trigger Trigger –– Lepton PLepton PTT> 8 > 8 GeV/cGeV/c
e, CMUPe, CMUP--µµ,CMX,CMX--µµ; ; –– TauTau--style isolated 5 style isolated 5 GeV/cGeV/c track;track;–– Targets Targets multileptonmultilepton final states including final states including
taustaus;;•• Trigger was Trigger was Installed Installed and and Commissioned Commissioned in in
January 2002.January 2002.
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
lepton+trklepton+trk TriggerTrigger
τ
τ
ppTTll > 8 > 8 GeV/cGeV/c
ppTTseedseed> 5 > 5 GeV/cGeV/c
••Lepton (Lepton (e,e,µµ))Lower Lower ppTT ThresholdThreshold
••Isolated trackIsolated trackNo tracks in 10No tracks in 10--303000 ConeCone
No No prescaleprescale with with high luminosity!!high luminosity!!
Isolation ConeIsolation ConeTau ConeTau Cone
ZZ
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
ZZ Event SelectionEvent SelectionBaseline selection: e+τh
e: 10 GeV, τh : 20GeVTransverse mass cut to reduce W+jets events:
MT(l,ET) < 25 GeV/c2
Vector Sum pT cut to reduce QCD events
pT(l,ET) > 25 GeV/cExample: Run I
(e: 10GeV, τh :15GeV)
CDF Run I Preliminary(OS (OS ll ττhh + 0 jets)+ 0 jets)
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
After Baseline( e /After Baseline( e /ττhh ), M), MTT, P, PTT cutscuts
• Data: 78 EventsData: 78 Events•• ZZ ττeeττhh (fit): 46(fit): 46±±15 15 evtsevts•• QCD (fit): 28QCD (fit): 28±±14 14 evtsevts•• ZZ eeee (fit): 3.7 (fit): 3.7 evtsevts
W/Z W/Z →→ ττ+ + ττ−− track Multiplicitytrack Multiplicity
••Data: 2345 EventsData: 2345 Events
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
After Baseline( e /After Baseline( e /ττhh ), M), MTT, , ppTT cuts, OScuts, OSMass (OS data)
Finalizing Z analysis, including theFinalizing Z analysis, including the µµ+ + µµ−− channelchannel
• Data : 47 evts• Z τeτh (fix): 39 evts• QCD (fit): 11±6 evts• Z ee (fix): 2.8 evts
W/Z W/Z →→ ττ+ + ττ−−
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
•• Tau Definition:Tau Definition:–– Calorimeter Cluster Calorimeter Cluster
R=0.4R=0.4–– RMS(cluster RMS(cluster
size)<0.25size)<0.25–– At least 1 track At least 1 track
Z Z →→ ττ+ + ττ−−
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
SUSY Searches at SUSY Searches at TevatronTevatron
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
RPV RPV mSUGRAmSUGRA Search in Decays of Stop PairSearch in Decays of Stop Pair
•• Stop pairs are produced thru RPCStop pairs are produced thru RPC•• Assuming RPV only in the 3rdAssuming RPV only in the 3rd
generation( ):generation( ):kjiijk DQL''
333 in λλ
ττhh selectionselection (106 pb(106 pb--11):):–– ττhh: cluster P: cluster PTT>15 GeV/c, >15 GeV/c, ||ηη|<1.0|<1.0
ττh h ID:ID: number of tracks and number of tracks and ππoo
in a narrow cone, isolation in a narrow cone, isolation energy, etc.energy, etc.
))(()~(,~~
111
hl bblbtttpp
τνν
τ
τ→
→→
t~
t~_
b τ
τbt
~t~
t~_
b τ
τb
l + τh + b + b
Dominant SM BGsDominant SM BGs•Z( ττ) + >2 jets•W( lν) + >3 jets•QCD•t t Wb+Wb•WW/WZ/ZZ
_
Trigger No b-tag for Run I
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Additional Selections:Additional Selections:
≥≥ 2 2 jets: Ejets: ET T > 15 GeV> 15 GeV
MMTT(lepton,E(lepton,ETT)< 35 GeV/c)< 35 GeV/c22 HHTT(lepton,(lepton,ττhh,E,ETT)> 70 )> 70 GeVGeV
001.13 1.13 ±± 0.130.13µµ
001.92 1.92 ±± 0.180.18ee
EventsEventsBackgroundBackgroundchannelchannel
2~ GeV/c 93>tmALEPH Limit:ALEPH Limit:
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Run II Preliminary ResultsRun II Preliminary Results
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Assuming same efficiency, same background level Assuming same efficiency, same background level due to 1 bdue to 1 b--tag, naturally not observing the process tag, naturally not observing the process
141
fb2pb110
)5.05.0(0.10.1
1
122
11
1limit
2limit
222limit111limit
≈
××−
≈
××
=⇒
××=××
−
−
LL
LL
εε
σσ
εσεσ
Mass Limit :Mass Limit :122 122 →→ 188188 GeV/cGeV/c22
2TeV
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
1,2tan125,90)~(2)~()~( 0
1021
−===≈≈±
µβχχχ
signGeVmmm
Low Low tantanββ SUSY: SUSY: trileptonstrileptons
•• Cuts:Cuts:–– 2e: P2e: PTT>15(10),>15(10),–– 10<10<MMeeee<70<70–– MMTT(e,MET)>15(e,MET)>15–– IsoIso Track PTrack PTT>5,|>5,|ηη|<3|<3–– MET>15MET>15
•• Used 42 pbUsed 42 pb--11
•• No events observedNo events observed•• Expected: 0.0 Expected: 0.0 ±±1.41.4
µχχννχχ ,),~)(~()~)(~(~~ 01
01
021 elllllllpp =→→→ ±
mSUGRAmSUGRA::
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Searches for New Mass Searches for New Mass Resonances (“bumps”)Resonances (“bumps”)-- DileptonsDileptons-- DijetsDijets-- DiphotonsDiphotons
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
No excess have been observed; Data consistent with SM No excess have been observed; Data consistent with SM bkgsbkgs
ee++ee--
µµ++µµ--
New Resonances in High Mass dileptonsNew Resonances in High Mass dileptons
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Results in terms of ModelsHigh Mass Dileptons allow searches for new particle productionHigh Mass Dileptons allow searches for new particle production..
RandallRandall--SundrumSundrum GravitonGravitonExcited Graviton in 5 DExcited Graviton in 5 D
Model Free parameters: Model Free parameters: -- Mass MMass MGG-- Coupling k/MCoupling k/MPLPL
Neutral Gauge bosons: Z’Neutral Gauge bosons: Z’Assuming SM CouplingsAssuming SM Couplings
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Z’ Z’ →→ µµ++µµ--
•• Typical high energy Typical high energy analysis:analysis:–– EETT>20 GeV>20 GeV–– PPTT>13 GeV>13 GeV–– Calorimeter Calorimeter
IsoIso/E/ETT<0.1(0.2)<0.1(0.2)–– ……–– M(eM(e++ee--), ), M(M(µµ++µµ--)> 150 )> 150
GeV/cGeV/c22µµ++µµ--
Sensitivity: Sensitivity: ~ 1pb (~ 1pb (µµ))~ 1pb (e)~ 1pb (e)
••Total Expected SM Events:Total Expected SM Events:
5.2 5.2 ±± 0.30.3
••Number of Observed Events:Number of Observed Events:
44
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
ee++ee--
µµ++µµ--
combinedcombined
Z’ Z’ →→ µµ+ + µµ--
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
µµ++µµ-- ee++ee--
High Mass Dileptons searchesHigh Mass Dileptons searches
95% C.L. Limits on Randall95% C.L. Limits on Randall--SundrumSundrum gravitonsgravitons
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
505 GeV/c505 GeV/c2219.719.7Run 1A Run 1A
650 GeV/c650 GeV/c227272Run 2 till now…Run 2 till now…640 GeV/c640 GeV/c229090Run 1BRun 1B
95% C.L. Limit (95% C.L. Limit (ee++ee--))∫∫LdtLdt (pb(pb--11))
e+e+µµ comb resultscomb results
Search for Neutral Gauge Bosons & Search for Neutral Gauge Bosons & RandallRandall--SundrumSundrum GravitonsGravitons
----
455 GeV/c455 GeV/c22
----
95% C.L. Limit (95% C.L. Limit (µµ++µµ--))
e+e+µµ comb resultscomb results
Z’Z’
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Mass Resonances in Dijets
start with the inclusive jet start with the inclusive jet samples (75 pbsamples (75 pb--11););get the 2 highest Eget the 2 highest ETT jets: jets: EETT(1), E(1), ETT(2);(2);||ηη(1)|< 2.0, |(1)|< 2.0, |ηη(2)|< 2.0;(2)|< 2.0;|tanh((|tanh((∆η∆η)|2)|< 2/3)|2)|< 2/3construct the dijet massconstruct the dijet massFit the dijet mass spectrum Fit the dijet mass spectrum applying a simple applying a simple parameterization of the QCD parameterization of the QCD backgroundbackgroundlooking for statistically looking for statistically significant bumps in the mass significant bumps in the mass spectrum;spectrum;
No evidence for new Particles was found No evidence for new Particles was found on a total of ~ 75 pbon a total of ~ 75 pb--11 of dataof data
we are still working we are still working on calibrationson calibrations
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Highest Run II Dijet Mass Event
Run: 152507 Event: 1222318(Oct 4 2002)
Jet 2 Jet 1
EETT(jet(jet 1)= 666 1)= 666 GeVGeVηη(jet(jet 1)= 0.43 1)= 0.43
EETT(jet(jet 2)= 633 2)= 633 GeVGeVηη(jet(jet 2) = 2) = --0.190.19
M(j,jM(j,j) = 1364 GeV/c2) = 1364 GeV/c2coscos θθ* = 0.30* = 0.30z vertex = z vertex = --25 cm25 cm
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
W‘W‘300 GeV/c300 GeV/c22< M < 410 GeV/c< M < 410 GeV/c22
Excited QuarksExcited Quarks200 GeV/c200 GeV/c22< M < 760 GeV/c< M < 760 GeV/c22
AxigluonsAxigluons or FU or FU ColoronsColorons200 GeV/c200 GeV/c22 < M < 1130 GeV/c< M < 1130 GeV/c22
Color Octet Color Octet TechniTechni--ρρ’s’s260 GeV/c260 GeV/c22< M < 640 GeV/c< M < 640 GeV/c22
E6 E6 diquarksdiquarks280 GeV/c280 GeV/c22< M < 420 GeV/c< M < 420 GeV/c22
Improved Results from CDF Run I limitsImproved Results from CDF Run I limits
Searches for “bumps” and LimitsNo evidence of bumpsNo evidence of bumps
on a total of ~ 75 pbon a total of ~ 75 pb--11 of dataof data
@ 95% C.L.@ 95% C.L.
dijetdijet
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Photon and Missing-ET Data Sets
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Inclusice Di-γ SearchesAnalysis Selection Cuts:Analysis Selection Cuts:
-- 2 central 2 central γγss with Ewith ETT ((γγ11), E), ETT ((γγ22)> 13 )> 13 GeVGeV-- Applied Cosmic Rays and Beam Halo removalApplied Cosmic Rays and Beam Halo removal
MMγγγγ
EETT
Data Sample: Data Sample: 84 pb84 pb--11
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Number of observed Events: Number of observed Events: 13651365
Number of Events with ENumber of Events with ET T > 25 > 25 GeVGeV: : 9595
After all Analysis Cuts:After all Analysis Cuts:
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Searches for GMSBSearches for GMSB
2EM Clusters with 2EM Clusters with EETT>20 GeV, |>20 GeV, |ηη|<1.1|<1.1EM clusters with same EM clusters with same vertexvertexJet Cone Jet Cone ∆∆R= 0.7R= 0.7∆θ∆θ ((Jet,METJet,MET)< 2.6)< 2.6jet veto in 1<|jet veto in 1<|ηηdetdet|<1.5|<1.5
Data Sample: 42 pbData Sample: 42 pb--11
Assuming has long lifetime:Assuming has long lifetime:-- two non pointing two non pointing γγ;;-- + MET+ MET
01
~χGG ~~~0
1 γγγχ →→NLSPNLSP
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Searches for GMSBSearches for GMSB
•• Messenger mass scale Messenger mass scale MMmm=2 =2 ΛΛ
•• Equiv. number of 5+5 Equiv. number of 5+5 mm--Fields NFields N55=1 =1
•• tantanββ=15 =15 •• sign(sign(µ)µ)>0>0
Run II Limit:Run II Limit:Run I Limit:Run I Limit:
TeVGeVm 52,66)~( 01 >Λ>χ
GeVm 75)~( 01 >χ
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Searches for other speciesSearches for other species-- CHAMPSCHAMPS-- LeptoquarksLeptoquarks
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
LQ production at TevatronLQ production at Tevatronq g q g →→ LQ + LQLQ + LQg g g g →→ LQ + LQLQ + LQq qq q →→ LQ + LQLQ + LQ
Decay Decay LQ LQ LQLQ →→ ll++ll--qqqq, ,
→→ ll±±ννqqqq, , →→ ννννqqqq
SignatureSignature2 high2 high--PPTT Leptons + Jets Leptons + Jets 1 Isolated lepton + E1 Isolated lepton + ETT + Jet+ JetEETT + jets+ jets
1th generation scalar LQ Search
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
1th generation scalar LQ Search
Expected Expected BkgBkg Events: Events: 3.4 3.4 ±± 3.2 events3.2 events
Observed: Observed: 00
Search performed in the dielectron + jet channelSearch performed in the dielectron + jet channel
M(LQ) < 230 GeV/cM(LQ) < 230 GeV/c22
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
CHArged Massive ParticleS
used the TOF Detector
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
number of SM events Expected:number of SM events Expected:2.9 2.9 ±± 0.7(stat) ±0.7(stat) ± 3.1 (sys)3.1 (sys)
Observed:Observed:77
-- Stable Stop model consideredStable Stop model considered-- NLO cross section (m= M(tNLO cross section (m= M(t11))))
at 95% C.L.at 95% C.L.
21 /107)~( cGeVtM <
CHAMPS
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
non SM Higgs Sectornon SM Higgs SectorSearchesSearches
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Search for Doubly Charged Higgs
LEP limit up to 100 GeV/cLEP limit up to 100 GeV/c22 ( prompt and long lived)( prompt and long lived)
HH++++ arises in extensions of SM. arises in extensions of SM. At the At the TeVatronTeVatron HH++ ++ can be paircan be pair--produced (Z exchange) orproduced (Z exchange) orsingly produced (WW fusion).singly produced (WW fusion).Signature: Signature: same sign leptonssame sign leptonsBackgrounds are lowBackgrounds are low
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Search for Doubly Charged HiggsSameSame--sign dielectron mass sign dielectron mass
distribution is used to search distribution is used to search for doubly charged Higgs of a for doubly charged Higgs of a given massgiven mass
search region defined as of search region defined as of ±± 10% of Higgs mass10% of Higgs masssignal region above the Z signal region above the Z mass (>100 mass (>100 GeVGeV))low mass region as control low mass region as control region (< 80 region (< 80 GeVGeV))
Very low background (Very low background (0.6 0.6 ))W/Z + misidentified jetW/Z + misidentified jetWZ productionWZ productionopposite signed opposite signed mismis--measured electron measured electron
+0.5-0.1
0 Events observed in 91 pb0 Events observed in 91 pb--11
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
the Model Independent the Model Independent ApproachApproach
IFAE 2003,IFAE 2003, LecceLecce –– 24/04/2003 24/04/2003 Carmine Elvezio PagliaroneCarmine Elvezio Pagliarone
Summary and ConclusionsSummary and Conclusions•• From march 2001 both CDF and D0 are taking data;From march 2001 both CDF and D0 are taking data;
•• Run II Searches for New Phenomena have started;Run II Searches for New Phenomena have started;
•• Competitive SUSY results will need more time, both in terms Competitive SUSY results will need more time, both in terms of luminosity and in detailed understanding of the detector of luminosity and in detailed understanding of the detector efficiencies and backgrounds in the low Eefficiencies and backgrounds in the low ETT regionregion
•• In many cases, setting competitive limits requires large In many cases, setting competitive limits requires large luminosity and going to the low end in energies; luminosity and going to the low end in energies;
•• Present analysis are already improving previous Run I Present analysis are already improving previous Run I results;results;
•• Many new Analysis are underway;Many new Analysis are underway;
•• For the next “several” years, Tevatron is the right place For the next “several” years, Tevatron is the right place where to look for new Physics…where to look for new Physics…