1. Search for New Physics beyond the SM
DOE Review 2006
Shufang Su • U. of Arizona

2. LC Experiments Low energy Precision measurement p - LHC (2007) p LEP
Data from sky: WMAP, supernovae, sky survey, … LC
Experiments
Low energy
Precision
measurement
Tevatron (now) p -
LHC (2007) p
LEP e- e+
S. Su
DOE Review, 2006

3. Dark Matter Indirect Searches Direct Searches
We live in a fascinating time when rich data is / will be available
My work focuses on searching for new physics beyond the SM
Involve experiments in
Nuclear physics
Particle physics
Astrophysics/Cosmology
Dark Matter
Indirect
Searches
Direct
Searches
S. Su
DOE Review, 2006

4. Students and Postdoc Postdoc Hock-Seng Goh (3rd year) Grad Students
Ethan Dolle (4th year)
Xinyu Miao (3rd year)
Undergrad Students
Jessica Goodman
S. Su
DOE Review, 2006

5. Dark Matter Studies
S. Su
DOE Review, 2006

6. Dark Matter Remarkable agreement Remarkable precision (~10%) S. Su-
 » 0.5%
 » 0.5%
=3%
=23% § 4%
=73% § 4%
Remarkable agreement
Remarkable precision (~10%)
S. Su
DOE Review, 2006

7. Research and Collaborations-
superWIMP Dark Matter
J. Feng (UC Irvine), F. Takayama (Cornell)
SuperWIMP Cosmology and Collider Physics
Jonathan L. Feng, Arvind Rajaraman, Bryan T. Smith, Shufang Su, Fumihiro Takayama, hep-ph/
SuperWIMP Dark Matter in Supergravity with a Gravitino
Jonathan L. Feng, Shufang Su, Fumihiro Takayama, hep-ph/
Supergravity with a Gravitino LSP
Jonathan L. Feng, Shufang Su, Fumihiro Takayama, Phys.Rev. D70 (2004)
SuperWIMP Gravitino Dark Matter from Slepton and Sneutrino Decays
Jonathan L. Feng, Shufang Su, Fumihiro Takayama, Phys.Rev. D70 (2004)
S. Su
DOE Review, 2006

8. Universe cools: n=nEQe-m/T
superWIMP
Thermal equilibrium
 $ ff -
WIMP  superWIMP + SM particles
FRT hep-ph/ ,
Universe cools: n=nEQe-m/T
WIMP
104 s  t  108 s
Freeze out, n/s » const
SWIMP SM
superWIMP
e.g. Gravitino LSP
LKK graviton
WIMP
neutral
charged
106
S. Su
DOE Review, 2006

9. Research and Collaborations-
Dark Matter Production at Colliders
J. Feng (UC Irvine), F. Takayama (Cornell)
Minimum Rates for Dark Matter Production at the Large Hadron Collider and International Linear Collider
Jonathan L. Feng, Shufang Su, Fumihiro Takayama, Phys. Rev. Lett. 96, (2006)
S. Su
DOE Review, 2006

10. Dark Matter Production at Colliders- DM f DM f
Cross symmetry
DM annihilation
DM production
/ 1/h  i
Not overclose universe 
Efficient annihilation then
Efficient production at collider
Upper bound on 
Lower bound on rates
S. Su
DOE Review, 2006

11. SuperWIMP with charged WIMP at LHC-
Signal: two isolated charged tracks, large dE/dx
||  2.5,   0.7
S. Su
DOE Review, 2006

12. Research and Collaborations-
Dark matter of the left-right twin Higgs model
E. Dolle (UA), J. Goodman (U. of Arizona)
Dark Matter of the Left-Right Twin Higgs Model
E. Dolle, J. Goodman, S. Su, in preparation.
300
400
500
600
700
S. Su
DOE Review, 2006

13. Indirect Searches for New Physics
S. Su
DOE Review, 2006

14. Research and Collaborations-
Low Energy Precision SUSY
A. Kurylov, M. Ramsey-Musolf, Sean Tulin (Caltech)
Charged Current Universality Problem and NuTeV Anomaly: IS SUSY to Blame?
Andriy Kurylov, Michael Ramsey-Musolf, Shufang Su, AIP Conf.Proc.698 (2004) 188.
Probing Supersymmetry with Neutral Current Scattering Experiments
Andriy Kurylov, Michael Ramsey-Musolf, Shufang Su, AIP Conf.Proc.698 (2004) 168.
Supersymmetric Effects in Parity Violating Deep Inelastic Electron Nucleus Scattering
Andriy Kurylov, Michael Ramsey-Musolf, Shufang Su, Phys.Lett.B582: ,2004.
Probing Supersymmetry with Parity Violating Electron Scattering
Andriy Kurylov, Michael Ramsey-Musolf, Shufang Su, Phys.Rev.D68:035008,2003.
S. Su
DOE Review, 2006

15. Research and Collaborations-
Low Energy Precision SUSY (cont’)
A. Kurylov, M. Ramsey-Musolf, Sean Tulin (Caltech)
Supersymmetric Effects in Deep Inelastic Neutrino Nucleus Scattering
Andriy Kurylov, Michael Ramsey-Musolf, Shufang Su, Nucl.Phys.B667: ,2003 .
SUSY Effects in Pion Decay
Michael Ramsey-Musolf, Shufang Su, Sean Tulin, in preparation.
S. Su
DOE Review, 2006

16. Møller Scattering DIS-ParityZ
Møller Scattering
Purely leptonic e g Z
Q-Weak (JLab)
Coherent quarks in P
Results in ~2009
2(2C1u+C1d) e g Z p n
DIS-Parity
Isoscaler quark scattering
(2C1u-C1d)+Y(2C2u-C2d) e g Z
Cs133
Atomic Parity Violation
Coherent quarks in entire nucleus
Nuclear structure uncertainties
-376 C1u – 422 C1d n m W Z +
Neutrino Scattering
Quark scattering (from nucleus)
Weak charged and neutral current difference
S. Su
DOE Review, 2006

17. Test of sin2W Running Weak mixing angle sinW g sinW = g’ cosW = e-
Weak mixing angle sinW
g sinW = g’ cosW = e
Jlab Moller
QWe
Qweak
SLAC E158
NuTeV
Standard Model Prediction
Erler, Kurylov & Ramsey-Musolf,
Phys. Rev. D 72, (2005)
Cs APV
DIS-parity
S. Su
DOE Review, 2006

18. Parity-Violating Electron Scattering
RPV 95% CL
MSSM
loop
No SUSY DM
Kurylov, Ramsey-Musolf, Su (2003)
Future 2.5% Moller
4% Qweak
S. Su
DOE Review, 2006

19. Research and Collaborations-
Physics report review paper: Low Energy Precision Supersymmetry
Michael Ramsey-Musolf, Shufang Su, to appear.
Introduction to supersymmetry
Renormalization
Z-pole precision measurements
Neutral current studies
Charge current studies
Flavor physics, CP violation and baryongenesis
Higgs searches
S. Su
DOE Review, 2006

20. Research and Collaborations-
Precision studies of MSSM
M. Ramsey-Musolf, Sean Tulin (Caltech)
MSSM Contribution to Precision Observables
Michael Ramsey-Musolf, Shufang Su, Sean Tulin, in preparation.
Precision Study of SUGRA, GMSB and AMSB
A. Dedes (Munich), S. Heinemeyer (CERN), G. Weiglein
(IPPP, Durham), X. Miao (UA)
The Lightest Higgs Boson of mSUGRA, mGMSB and mAMSB at Present
and Future Colliders: Observability and Precision Analyses
Dedes, Sven Heinemeyer, X. Miao, Shufang Su, Georg Weiglein,Nucl.Phys.B674: ,2003.
Distinguish SUSY Breaking Scenario in Precision Studies
Sven Heinemeyer, X. Miao, Shufang Su, Georg Weiglein, in preparation.
S. Su
DOE Review, 2006

21. Precision Study of SUGRA, GMSB and AMSB-
ILC
S. Su
DOE Review, 2006

22. Direct Searches for New Physics
S. Su
DOE Review, 2006

23. Research and Collaborations-
Collider Study of the left-right twin Higgs Model
H.S. Goh (UA)
Collider Phenomenology of the Left-Right Twin Higgs Model
Hock-Seng Goh, Shufang Su, hep-ph/
Collider Signatures of the Left-Right Twin Higgs Model
Hock-Seng Goh, Shufang Su, hep-ph/
S. Su
DOE Review, 2006

24. LRTH: Parameters and Spectrum-
Model parameters: f1, (f2, y), , M, B, 
Determine particle masses and interactions
fixed by Higgs VEV
= 4f1 or 2f1
M=150 GeV
B=50 GeV
 = f1/2
fixed by top quark mass
S. Su
DOE Review, 2006

25. Heavy Gauge Bosons -
Drell-Yan process
S. Su
DOE Review, 2006

26. ZH decay - ZH
S. Su
DOE Review, 2006

27. Research and collaborations
Collider Study of the Left-Right Twin Higgs Model (cont’)
Heavy Top Quark of the Left-Right Twin Higgs Model
X. Miao, Shufang Su, in preparation. - j W tH  b t l 
3 b + 1 j + 1 lepton + missing ET
S. Su
DOE Review, 2006

28. Research and collaborations
Collider Study of left-right twin Higgs Model (cont’)
Identify the Twin Higgs Mechanism at Colliders
Shufang Su, in preparation. -
S. Su
DOE Review, 2006

29. Research and collaborations-
Distinguish New Physics at Colliders
Left-Right Twin Higgs Model vs. Little Higgs Models
heavy top quark, heavy gauge bosons
Left-Right Twin Higgs Model vs. Two-Higgs Doublet Models
extra Higgses
S. Su
DOE Review, 2006

30. Research and collaborations-
Neutralino LSP vs. Sneutrino LSP
C. P. Yuan (Michigan State U.)
Same signal, different interpretation
vs.
Can be studied at LHC by
S. Su
DOE Review, 2006

31. Research and Collaborations-
Propagation of High Energy Charged Slepton
M. H. Reno (U. IOWA), I. Sarcevic (UA)
Propagation of Supersymmetric Charged Sleptons at High Energies
Mary H. Reno, Ina. Sarcevic, Shufang Su, Astropart. Phys. 24 (2005) 107.
S. Su
DOE Review, 2006

32. Long Lived Stau     Gravitino LSP Stau NLSP Larger production rate-
Gravitino LSP
Stau NLSP 
earth  ~  
earth
Msl=250 GeV
Mwino=250 GeV
Albuquerque, Chacko
and Burdman (2003)
Larger production rate
smaller production rate
 = 2.197£ 10-6 sec
c=659 meter
Larger effective detector volume
S. Su
DOE Review, 2006

33. Radiative Energy Loss: -
Crucial to determine the energy loss of the high energy stau as it traverse the earth
photonuclear
bremstraahlung
pair production
S. Su
DOE Review, 2006

34. radiative energy loss and stau range-
Stau
lifetime
m=250 GeV
m=150 GeV
/ 1/m
/ 1/m2
S. Su
DOE Review, 2006

35. Activities Invited plenary talk at subZ workshop-
Invited plenary talk at subZ workshop
Neutral Current Overview “From Zero to Z0”, May, 2004, Fermilab.
Invited plenary talk at Aspen winter conference
Gravitino dark matter “The Highest Energy Physics”, February, 2005, Aspen, CO.
Colloquium at University of Wisconsin, Madison
Dark matter May, 2005, Madison, WI.
Invited lecture at Summer Institute 2005
Dark Matters: WIMP and beyond August, 2005, Fujiyoshida, Japan.
Invited lecture at CCAST workshop
Dark matter and collider physics “LHC and Dark Matter”, Dec, 2005, Beijing, China.
Invited talk at Jefferson Lab Hall C workshop
Theory overview on neutral current measurements Aug, 2006, Jefferson Lab.
S. Su
DOE Review, 2006

36. Organization of conferences/workshops-
From Zero to Z0, a workshop on precision electroweak physics
May, 2004, Fermilab
Flavor physics workshop
Summer 2008, Kavli Institute in Beijing
S. Su
DOE Review, 2006

37. Future Directions -
LHC related physics: understand what data really means
QCD issue
Simulation tools for new physics and SM background
Experimental physics observables/ capabilities …
Detector
Interplay between particle physics and cosmology
Determine dark matter properties at colliders
Direct and indirect dark matter detection
S. Su
DOE Review, 2006