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There’s Something About SUSY. m. spiropulu EFI/UofC. Something Heavy Supersymmetry is the most plausible solution of the hierarchy (issue) . about SUSY. Something Light low energy Supersymmetry is required . Something Dark might provide the missing matter of the universe - PowerPoint PPT Presentation
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There’s Something About SUSYThere’s Something About SUSYm. m.
spiropuluspiropuluEFI/UofCEFI/UofC
about SUSYSomething Heavy
Supersymmetry is the most plausible solution of the hierarchy (issue)
Something Lightlow energy Supersymmetry is required
Something Darkmight provide the missing matter of
the universeif the lightest neutralino is stable
Something Urgenttestable at high enough energies (now)
Something Beautifulthe symmetry between fermions and
bosons
Something Exotica component of string theory
Something Coolthey couple with known and sizable
strengths
SUSY is not a (super)model
SUSY is a spontaneously broken spacetime symmetry
SUSYSUSY
bosons-fermions IBosons: Commuting fields Integer spin particles
Bose statistics
Fermions: Anticommuting fields Half-integer spin particles Fermi statistics
[anticommutativity ab=-ba and aa=-aa=a2=0 If a is the operator that creates an electron into a given state, a2 creates two electrons into the same state.]
A superspace has extra anticommuting coordinates
bosons-fermions IIIf we Taylor expand an electron (anticommuting field) in the extra coordinates
selectron field in superspace = selectron(boson) + electron(fermion)
For each boson of spin J there is a fermion of spin J±½ of equal mass
quark
quark
gluon
quark
squark
gluino
PhotonW,Zgluon
Squarkslepton
PhotinoWino,Zinogluino
quarklepton
equal couplings
This picture is not telling the whole story:SUSY is broken The masses of the superparticles are not equal with their corresponding particles (or we would have seen them already). So we start SUSY with a few new parameters and introduce a bunchmore of what are called “soft breaking terms”: the masses of all the superparticles.
general MSSM:370 parameters
M1M2M3
particle content
supersymmetry in colliders
Tevatron mass reach: 400 – 600 GeV for gluinos, 150 – 250 GeV for charginos and neutralinos 200 – 300 GeV for stops and sbottoms
LHC reach: 1 – 3 TeV for almost all sparticles
If SUSY has anything to do with generating theelectroweak scale, we will discover sparticles soon.
hierarchy of scales
10-33 cmPlanck scale
GN ~lPl2 =1/(M1/(MPlPl))22
10-17 cmElectroweak scale
range of weak forcemass is generated (W,Z)
strong, weak, electromagneticforces have comparable strengths
1028 cmHubble scale
size of universe lu16 orders of magnitudepuzzle
What kind of physics generates and stabilizes the 16 orders of magnitude difference between these two scales
1027 eV 1011 eV 10-33 eV
bosons-fermions IIIBose-Fermi Cancellation
SM
and the solution to the higgs naturalness problem(the radiative corrections to the higgs mass can not be 32 orders of magnitude larger than the higgs mass)
SUSY
unification of couplingsThe gauge couplings of the Standard Model converge to an almost common value at very high energy.
what’s upwith that?
unification of couplings
SUSY changes the slopes of the coupling constants
For MSUSY=1 TeV, unification appears at 3x1016 GeV
proton’s (don’t) decay (fast)
In generic SUSies the proton could decay
Satisfy this by conserving R-parity R=(-1)3(B-L)+2S
We have measurements to the contrary effect
with R-parity conservation
370107 (soft breaking) parameters
The end of the decay chain of all SUSY particles is the lightest supersymmetric particle (LSP)
The properties of the LSP, generally determine the signature of SUSY
LSP is stable – great dark matter candidate; In many SUSY models it also weakly interacting.
squarks/sleptons gauginos higgses
example of mSUGRA SUSY
tanA
example collider signatures
example backgrounds
more SUSY models
Gauge mediated SUSY (LSP is the gravitino) photon-lepton signatures. M1:M2:M3=1:2:7
Anomaly mediated SUSY (LSPs are the Winos) disappearing tracks. M1:M2:M3=3:1:-8
String inspired models
SUSY mass cluesM
ass
(GeV
/c2 )
01
~ 1
~ Re~ R~ R~ ~ Rl~ t~ b
~ q~ g~
Upper bound(stau coanihilation)
190170
220
D0
D0
CDF
CDF
CDF
D0CDF
D0 GMSB
45DM
LEP2
LEP2
LEP2
97LEP2
LEP2
LEP2
LEP2 LEP2
LEP2
LEP2 GMSB
LEP2
TeVII reachTeVII reach
TeVII reach
Red : most natural mass*
* Anderson/Castano
Cosmology needs sources of non-baryonic dark matter SUSies provide weakly interacting massive particles to account for the universe’s missing mass
neutralinosneutralinos
sneutrinossneutrinos
gravitinosgravitinos
We are closing in fast on either discovery or exclusion!
There is a good complementarity between direct, indirect, and collider searches
the dark side of SUSY
already excluded
CDMS, CRESST,GENIUS
GLAST
Tevatron reach
J. Feng, K. Matchev, F. Wilczek
LHC does the rest
How do we detect neutralino DM at colliders?
look at missing energy (LSP) signatures:
QCD jets + missing energy
like-sign dileptons + missing energy
trileptons + missing energy
leptons + photons + missing energy
b quarks + missing energy
etc.
01χ~
01χ~
CDF 300 GeV gluino candidate:
gluino pair strongly produced,decays to quarks + neutralinos
detectors
DD
~2 x Tevatron (3.2 Km)
LHC (27 Km)
Main Injectorand Recycler
p source
Booster
Teva
tron
Teva
tron
pp 14 TeV 1034
32105 TeV 2 pp
machines
gluino decay path example
example cross sections
B L tNobserved
L is the Luminosity is the acceptance (trigger included)B is the Background
is the cross section (unit is area: the effective
scattering size of a process)
Total p/antip cross section is 7x10-30 m2
Unit of Barns (b) = 10-28m2
(ppX)=70 mb
Run I L ~ 1031 crossings/cm2/sec
N/sec ~ L = 7x105/sec
>1 interactions per beam crossing!
Cross Section for top production: (pptt+X)=70 mb
This is around 1/1010 of total
N/sec ~ L = 7x10-5/sec
A couple were created/day but we only
saw a small %
~100 events in 3 ys in two experiments
recording the physics: triggering
recording the physics: triggering
recording the physics: triggering
• Calorimeter energyCentral Tracker (Pt,)Muon stubs
Cal Energy-track match E/P, Silicon secondary vertexMulti object triggers
Farm of PC’s runningfast versions of Offline Code moresophisticated selections
Missing Energy provides R-parity conserving SUSY signatures (R=(-1)3B+L+2S) and also appears
in many other phenomenological paradigmsMET + 3 jets (squarks,gluinos)
MET + dileptons + jets (squarks gluinos) MET + c-tagged jets (scalar top)
MET + b-tagged jets (scalar bottom,Higgs) MET + monojet (gravitino, graviton)
MET + photons (gravitino)
iiiT n)(EE ˆsin
|P| max T
Missing ET + multijets (CDF)
01χ~
01χ~
Production/Decay GraphsProduction/Decay Graphs
MAIN RING DETECTOR NOISE COSMICS eliminated with a set of timing and good jet quality requirements
“Fake” MET cosmic
QCD gap
Main Ring
& QCD mismeasurements
Use todefinefiducial
jets
Standard Model Missing Energy +jets
top, dibosonsMC norm using theory cross section
QCD MC norm tojet data
Z/W +jets MC norm to Z data
Number of High PT isolated tracks
0 >0
“blind analysis” approachwhere you expect your signaldon’t look until you are ready
Analysis
HT=
ET(2
)+E
T(3
)+M
ET
Optimization for SUSYOptimization for SUSY
comparisons around the “box”
QCD
Z(inv)
W(,e)top
W()
““The BOX”The BOX”
The Box: SM Expected 76±13
Foundin data
74
““The other BOXes”The other BOXes”
A/D SUSY boxes:SM Expected 33±7
Foundin data
31
““The other BOXes”The other BOXes”
SUSY box C:SM Expected 10.6±1
Foundin data
14
LIMITSLIMITS
Candidate Event
Knowledge from this analysis applied in monojet+MET analysiswith RunI data that can search for associate gluino-neutralino production (also KK graviton etc).
...7.1 21
22
23
2Z 0.014M0.24M7.2MM
The required cancellation is easier if the gluino mass is not “too large”.
802.7
300 2Z
23
3 MM
M
There’s Something About the gluino mass (why we think we’ll see it sooner than later)
susy – electroweak connection favors lighter gluinosto avoid tuning (G. Kane et al)
look at models with nonuniversal gaugino masses
If this signal is observed , the structure in the l+l-mass distribution will constrain the 0
1 and 02
masses (difficult). LHC will take it from there.
Batavia TeV, 2 , spp
chargino/neutralino trilepton signature
Aided by improved CDF/D0 lepton coverage and heavy flavor tagging
stop signatures
Batavia TeV, 2 , spp
colliders, SUSY and baryogenesis
Baryogenesis requires new sources of CP violation besides the CKM phase of the Standard Model (or, perhaps, CPT violation).
B physics experiments look for new CP violation by over-constraining the unitarity triangle
SUSY models are a promising source for extra phases
since colliders will thoroughly explore the electroweak scale, we ought to be able to reach definite conclusions about EW baryogenesis
EW baryogenesis in SUSY appears very constrained, requiring a Higgs mass less than 120 GeV, and a stop lighter than the top quark
such a light stop will be seen at the Tevatron
LHC is a SUSY factory.LHC is a SUSY factory.
If LHC does not find SUSY forget about If LHC does not find SUSY forget about (weak scale) SUSY.(weak scale) SUSY.
High rates for direct squark and High rates for direct squark and gluino production.gluino production.
Model independent measurement OK- Model independent measurement OK-
Model independent limit DIFFICULT. Model independent limit DIFFICULT.
SUSY@LHCSUSY@LHC
Use consistent model in simulations to study different cases.
Combinatorial SUSY is the dominant background to SUSY.
Guess and scan over the most difficult points of the multi-parameter-multi-model SUSY space.
Ultimately you want to measure all the parameters of the model.
SUSY@LHCSUSY@LHC
Correlates well with
TTTTT EPPPP )4()3()2()1(
),min( ~~ guSUSY MMM
SUSY@LHCSUSY@LHC
SUSY@LHCSUSY@LHC
t t
bbhh
suppress to
1.0DR lepton, isolated-non
GeV 100 P with
jets additional least twoat
GeV 55Pwith
jets-b taggedoexactly tw
GeV300E
:Require
events SUSY of 20%in
then ~~ If
bb
T
T
T
01
02
-1
SMSUSY
SUSY@LHCSUSY@LHC
Geneva TeV, 14 , spp
tan=10sgn =+
Method worksover a large regionof the parameter space in the SUGRA modelContours show number of reconstructed Higgs
SUSY@LHCSUSY@LHC
SUSY@LHCSUSY@LHC
SUSY@LHCSUSY@LHC
There’s Something more About SUSY
• The predicted value of sin2(W(MZ))~0.2314-0.25(s(MZ)-0.118)+0.002 (e.g. Ross et. al)within 1% of measured value
• The predicted upper limit on the higgs mass~130 GeV (e.g. Carena et. Al, Ellis et. al …)with 115 lower experimental limit things get urgent
• EWSB through radiative correctionsthe massiveness of the top quark
L. Alvarez-Gaume, J. Polchinski, M. Wise NPB221:495 (1983)also L. Ibanez, and J. Ellis, D. Nanopoulos, K. Tamvakis the same year
Quote from the abstract: "We discuss the motivation for consideringmodels of particle physics based on N=1 supergravity...renormalizationeffects drive spontaneous symmetry breaking of SU(2)xU(1) to U(1) for atop quark mass between 55-200 GeV."
The immediate future HEP hadron collider program
Year: 2002 03 04 05 06 07 08 09 10
Run IIaCollider: Run IIb
BTeV physics
LHC physics
Higgs
the wager
A light Higgs stabilized by TeV scale SUSY is what will be found.
something about terminologyNot everything super- has to do with supersymmetry. (superconductor, supermarket, superstition, supernatural etc…)
However, SUPERMAN does
Lord of the Rings The Two TowersRun 152507 event 1222318
Dijet Mass = 1364 GeV (corr)
cos * = 0.30
z vertex = -25 cm
J1 ET = 666 GeV (corr)
583 GeV (raw)
J1 = 0.31 (detector)= 0.43 (correct z)
J2 ET = 633 GeV (corr)
546 GeV (raw)
J2 = -0.30 (detector)= -0.19 (correct z)
Corrected ET and mass are preliminary
(thanks to Rob Harris)
RunIIa Luminosity Goals 5-8 E31 cm-2/sec (w/o Recycler) 10-20 E31 cm-2/sec (w/ Recycler) integrated: 2-5 fb-1 (2004)
RunIIb Luminosity Goals 40-50 E31 cm-2/sec integrated: 15 fb-1 (2007)
(W), (Z) ~10% higher(tt) ~35% higher
TeV 1.96 s
* For most of Run Ib, average luminosity at start of store was ~1.6x1031 cm-2 s-1. Integrated luminosity delivered was ~0.15 fb-1.
The collider performance in Run II got off to a slow start. The Beams Division made quick progress on the luminosity:
The peak luminosity increased from ~0.9E31 on 3/25/02 to ~1.8E31 by 5/10/02 to 3.6E31 by 10/5/02.Many problems identified; some solutions found; some to be.
Still improving collider performance.
Jan. HEPAP
AA->MI opticsStep 13
new injection helix
beamloading compensation
January 1 – June 1• Improve antiproton efficiency from Accumulator to Tevatron low-• Improve proton intensity at Tevatron low-• Commission Recycler parasitically
June 3-14• Shutdown to install new Accumulator transverse core cooling
June 15 – December 31• Improve stacking rate• Shutdown for continuing Recycler vacuum work (tentatively scheduled
September 30-November 10)• Integrate Recycler into operations• Minimize access time
Underlying Accelerator Physics Issues
Three primary accelerator physics issues are being dealt with:– Accumulator emittance/heating
• Intrabeam scattering appears implicated as major source
– Long range beam-beam in the Tevatron• Manifested as poor antiproton lifetime at 150 GeV• Once collision configuration achieved, this is not impacting performance• Contribution to lifetime from vacuum under investigation
– Proton longitudinal emittance• Beamloading compensation implemented some improvement, but
appears to be growth during acceleration in Main Injector.
These issues interconnect many of the individual performance parameters
Progress requires attacking everything in parallel.
Physics in Run IIPrecision measurements, looking for an
inconsistency with the Standard Model:– top quark and W boson properties
– measurements of B mixing and CP parameters
Possible discoveries include the Higgs boson or any new physics at the Tevatron mass scale:– Higgs boson
– Supersymmetry
– Extra dimensions
– New dynamics (technicolor, new gauge bosons)
– Quark or lepton compositeness.
Prospective physics highlights at 0.1-0.3 fb-1
0.1 fb-1
• Even with a data sample of this size, there will be many new physics results.– New detectors have increased
capability
– Ecm changed from 1.80 to 1.96 TeV, significantly increasing cross sections for high-mass states.
• Production of top, bottom, and charm quarks, W and Z, jets
• B Physics: Start of a broad program: spectroscopy, lifetimes, and mixing
0.3 fb-1
• Major new results in every area
• Top quark: Mass measurement with twice current precision
• CP violation: Bs mixing to xs = 25
• New physics searches: – Extra dimensions with scale of 1.6 TeV
– Confirmation or elimination of new physics indicated by Run I observation of rare events
• QCD: Jet spectrum at highest transverse energy
Prospective physics highlights at 1-2 fb-11 fb-1
• Electroweak– W magnetic moment, signals for
WW and W+Z production– top quark properties with 1000
top events per experiment
• Supersymmetry– possible signals in trileptons– SUSY Higgs signal for m(A) ~
100 GeV, tan = 35
• B Physics b lifetime to 0.06 ps
2 fb-1
• Electroweak: – W boson mass measured to greater precision
than from LEP – top quark mass to 2.7 GeV/expt
• Higgs – 95% exclusion of Higgs boson with mass of
115 GeV
• Supersymmetry– observe squarks and gluinos if gluino masses
below 400 GeV– observe chargino/neutralinos if mass below
180 GeV, tan
• CP violation and Bottom quark – Measurement of decay mode Bd K*with 60 events
– Bs mixing to xs = 40
Prospective physics highlights at 4-8 fb-1
4 fb-1
• Higgs: 95% exclusion of standard Higgs boson up to 125 GeV
• Supersymmetry– discovery of supersymmetry
in large fraction of parameter space for minimal supersymmetry
– discovery of SUSY Higgs for
m(A)~150 GeV, tan
8 fb-1
• Higgs– 3evidence for standard
Higgs with mass less than 122 GeV
– 95% exclusion of standard Higgs for masses below 135 GeV or from 150-180 GeV
• Supersymmetry: – 95% exclusion of the minimal
supersymmetric Higgs in the maximal mixing model
Prospective physics highlights at 15 fb-1
• Higgs– 4-5evidence for standard Higgs with mass of 115 GeV – 95% exclusion of standard Higgs for all masses below
185 GeV• Supersymmetry
– SUSY trilepton signal extended to large tanand gluino masses 600-700 GeV
– possible discovery of supersymmetric Higgs boson m(A) up to 200 GeV, tan
• Electroweak – top quark mass measurement with error of 1.3 GeV/expt – W mass measurement with error of 15 MeV/expt
CDF-II detector is recording quality data (ICHEP 2002)
– Stable physics running established in early 2002• intensive effort during fall 2001 shutdown had big payoff • silicon coverage, trigger came together very quickly
> 95% / 90% / 80% of L00/SVX/ISL now (summer 2002) regularly read out
L1/L2/L3 trigger 6400/145/25Hz @1.6E31, <1% deadtime (BW 40K/300/70)
• trigger algorithms increased rapidly in sophistication; now quite stable
~140 separate trigger paths (e, , , , , jet, displaced track, b jet, …)
– 33.0/pb delivered; 23.5/pb recorded January-June 2002• ~10.0/pb pass the most stringent analyses’ “good run” criteria
CDF II Detector
Tile/fiber endcapcalorimeter (faster,larger Fsamp, no gap)
132 ns front endCOT tracks @L1SVX tracks @L240000/300/70 Hz~no dead time
TOF (100ps@150cm)
7-8 silicon layersr, rz, stereo viewsz0
max=45, max=22<R<30cm
30240 chnl, 96 layer drift chamber(1/pT) ~ 0.1%/GeV(hit) ~ 150m
coverageextended to =1.5
Double b tags essentialfor Mtop, Hbb
All critical components are working well
CDF II DetectorMajor qualitative improvements over Run 1 detector:– Whole detector can run up to 132 nsec interbunch
– New full coverage 7-8 layer 3-D Si-tracking up to || ~ 2
– New faster drift chamber with 96 layers
– New TOF system
– New plug calorimeter
– New forward muon system
– New track trigger at Level 1 (XFT)
– New impact parameter trigger at Level 2 (SVT)
All systems working well– Silicon and L2 took longer to commission
Forward region restructured
Taking good quality data during 2002Many new capabilities of detector and trigger
Each Run II pb-1 worth much more than each Run I pb-1!And of course 9% more W,Z; 35% more tt at 1.96 TeV
Many early physics resultsWl), W ) / Z )m(B), B), M(Ds,D+), BR(D0 KK,)
Tooling up for MW, Mtop, SUSY searches, Higgs search
CDF
Run IIb• Additional luminosity provides greater precision for electroweak
measurements, greater reach for exotic searches, plus the opportunity to observe a low-mass Higgs boson.
• Accelerator– Improve luminosity by factor of 2-3 with a number of modest upgrades.
– Accelerator advisory committee reviewing progress.
– Right now, the attention must be concentrated on run IIa.
• Detectors– Two upgrade projects:
• Replace partly rad-damaged silicon detectors with new detectors of simpler design with more rad-hard technology.
• Upgrade data acquisition and triggers to deal with higher luminosity.
– PAC has been following projects, Stage 1 approval discussion at Aspen
R
The Particle Physics Roadmap for the Next 20 Years
Identify Sources
ofDark
Energy
Decipherthe
Footprintsof the
Big Bang
Find theRegime ofQuantum
Gravity andExtra
Dimensions
DiscoverUnification
of theFundamental
Forces
Find theScales ofFlavor
Breaking,Matter
Unification
UnderstandMatterversus
Antimatterin the
Universe
Discover, Identify, Understandthe New Physics at the
TeV ScaleSupersymmetry?
Extra Dimensions?New Forces?
Find theSources
ofCP
Violation
LeptonNumber
Violation?
Explore theNeutrino Sector:
Masses andOscillations
CP violationand
Rare processesin the
Quark Sector
Identify theDark Matter
Neutralinos?Brane matter?
Axions?
Equationof State
forDark Energy
ProtonDecay?
Find theHiggs
ResultsFrom the Data of 2000:
aμ(exp)=11 659 204(7)(5)×10-10 (0.7 ppm) Exp. World Average:
aμ(exp)=11 659 203(8)×10-10 (0.7 ppm)300
260
220
180
140
100
(aμ-0
.001
1659
) ×10
1 0
1998 1999 2000 World Average
Theory
if this is new physics, it is probably SUSY, and the Tevatron will confirm it.
if it is not new physics, it constrains susy models significantly
graviton emission simulation: we don’t see the graviton we see a jet from the gluon
Two events are graviton simulation and one is real CDF data: Can youpick the gravitons?
two events are real CDFdata and one is gravitonsimulation; Can youpick the graviton?
good news forthe Tevatron
mSUGRA
LSP gives rise to missing energy signatures
Higgs Sector
How heavy can SUSY be?
good news fordirect searches, too!
sneutrino dark matter
if sneutrinos are the LSP, they are dark matter
but there are problems:
LEP measurement of the invisible width of the Z bosonimplies M_sneutrino > 45 GeV
but then expect low abundance due to rapid annihilationvia s-channel Z and t-channel neutralino/chargino exchange.
sneutrino dark matter
L. Hall et al (1997): susy with lepton flavor violation can splitthe sneutrino mass eigenstates by ~> 5 GeV, enoughto suppress the annihilation processes
however, the same interaction seems to induce atleast one neutrino mass ~> 5 MeV.
this is now excluded completely by SuperK + SNO +tritium beta decay.
it appears that sneutrinos are ruled out as thedominant component of CDM
gravitino dark matter
Large classes of susy models, i.e. gauge-mediated andother low-scale susy breaking schemes, produce light(keV) gravitinos that overclose the universe.
Fujii and Yanagida have found a class of“direct” gauge mediation models where the decaysof light messenger particles naturally dilutes thegravitino density to just the right amount!
Such models have distinctive collider signatures
Kaluza-Klein dark matter
If we live in the bulk of the extra dimensions,then Kaluza-Klein parity (i.e. KK momentum)is conserved.
So the lightest massive KK particle (LKP) is stable
Could be a KK neutrino, bino, or photon
How heavy is the LKP?
Current data requires MLKP ~> 300 GeV
LKP as CDM requires MLKP ~ 650 –850 GeV
the LHC collider experiments will certainly see this!
the Bigger Big picturethe Bigger Big picture
The Standard Model describes everything that we have The Standard Model describes everything that we have seen to extreme accuracy. seen to extreme accuracy.
Michelangelo Antonioni on Ferrara:“...it is a city that you can only see partly and the rest disappears and can onlybe imagined...” (beyond the clouds)
Now we want to extend the model to higher energies and get the whole picture
the Bigger Big picturethe Bigger Big picture
For this we need new experiments and ideas
supersymmetry
strings
strings
(even) extra dimensions
(even) extra dimensionsIa
n Sh
ipse
y
If you ask questions about what happened at very early times, and you compute the answer, the answer is: Time doesn’t mean anything. S. Coleman
Space and time may be doomed. E. Witten
I am almost certain that space and time are illusions. N. Seiberg
The notion of space-time is clearly something we’re going to have to give up. A. Strominger
D. Gross
…for any important assertion evidence must be produced;…prophecies and bugaboos must be subjected to scrutiny;… guesswork must be replaced by exact count;….accuracy is a virtue and inquiry is a moral imperativeTo the hegemony of science we owe a feeling for which there is no name, but which is akin to the faith of the innocent that the truth will out and vindication will follow. In its purest form science is justice as well as reason.
Jacques Barzun
SCIENCE: The Glorious Entertainment
DM at colliders (eg LHC)
M0=100 GeVM1/2=300 GeV0 almost pure BinoWill be able to predictwithin 20% h2
However no strict useful upperbound from h2 <0.5
show feng matchev plot
What will we learn at colliders
Does low energy SUSY exist (discovery)
Measure the parameters and SUSY masses
Figure out how SUSY is broken
Is R-Parity violated
IS THE dm susy?
A proton/antiproton beam is a broadband beam of quarks, antiquarks and gluons.
Total longitudinal momentum is unknown.Total trasnverse momentum is zero
Total transverse momentum of invisible particles inferred from visible transverse momentum.
HISTORY-LINES
Deliot et al.Resonant sneutrino/slepton production
qlq
l
lqq
(
~
~~(01
1
lqq~
(
jlll 2
Batavia TeV, 2 , spp
jll 2
kj
e
du
e
(
~
~~(01
1
78)~(
158)~(
~(
01
1
m
m
m
10 fb-1
2()~( 1 softjeMm
2()~( 01 softjMm
2()~( jeMm
Batavia TeV, 2 , spp
09.0 tan ,150M ,200 20 m
MACHINES
Main Injectorand Recycler
p source
Booster
Super-ModelsMSSM
couplings trilinearAA
masses squark and sleptonmm
Higgs odd-CP of mass m(A)
tan
parameter mass Higgs
mass gluinom
q
q
g
,
,
~~
~~
~
l
l
mSUGRA input
sign
couplings trilinear unified A
tan
masses scalar unified M
masses gaugino unified M
0
0
1/2
hep-ph/0003154With 2 fb-1
m1/2 up to 150 GeVfor m0~200 GeV
mSUGRA
GMSBWith 2 fb-1
50-100 TeVfor m( )~200-300 GeV~
Summary of RUNII SUGRA Workshop
Tovey
1)sgn(
tan8.1
500500
500)(100 2/10
A
mm
100tan4.1 Squark,gluino250-2000s>50
tan8.1
5N1
TeV 1000100
TeV 10010
100tan4.1
5
m
m
M
1000 fb-1
100 fb-1
10 fb-1