Theoretical particle physics at the LHC Era
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1 Theoretical particle physics at the LHC Era Department of Physics University of Arizona S. Su BRC visit 1
2 Welcome! I am Shufang Su. S. Su BRC visit 2
3 What s hot in particle physics today? S. Su BRC visit 3
4 Particles and Forces Building blocks of matter -- elementary particles smaller distance : higher energy Fundamental interactions forces Gravity Electromagnetic force Weak interaction burning of the sun Strong interaction holds proton and neutron S. Su BRC visit 4
5 Standard Model of Particle Physics - S. Su BRC visit 5
6 Standard Model of Particle Physics - Strong interactions S. Su BRC visit 5
7 Standard Model of Particle Physics - Strong interactions S. Su BRC visit 5
8 Standard Model of Particle Physics - Strong interactions Origin of mass S. Su BRC visit 5
9 Standard Model of Particle Physics - Strong interactions Origin of mass S. Su BRC visit 5
10 Standard Model of Particle Physics - Strong interactions Origin of mass +gravity Unification S. Su BRC visit 5
11 Standard Model of Particle Physics - Strong interactions Origin of mass +gravity Unification S. Su BRC visit 5
12 LEP (-2000) - e + e - S. Su BRC visit 6
13 LEP (-2000) Tevatron (now) - e + e - p S. Su BRC visit 6
14 LEP (-2000) Tevatron (now) - e + e - p LHC (2008) S. Su BRC visit 6 p p
15 LEP (-2000) Tevatron (now) - e + e - p LC LHC (2008) S. Su BRC visit 6 p p
16 LEP (-2000) Tevatron (now) - e + e - p We live in an exciting era when rich data is / will become available LC LHC (2008) S. Su BRC visit 6 p p
17 Group S. Su BRC visit 7
18 Group Members - Faculty: Zackaria Chacko Keith Dienes Ina Sarcevic Shufang Su Doug Toussaint S. Su BRC visit 8
19 Group Members - Postdocs (for Dienes, Su and Toussaint) Current: Alexei Bazavov (2007) FSU UA Brooks Thomas (2007) Michigan UA Previous: Dru Renner ( ) MIT UA DESY Hock-Seng Goh ( ) Maryland UA Berkeley Sabine Hossenfelder ( ) Germany UA Santa Barbara S. Su BRC visit 9
20 Students (for Dienes, Su and Toussaint) Sky Bauman Dienes Steve Bildstein Toussaint (2005) Chris Krenke Chacko Ethan Dolle Su Walter Freeman Toussaint Mike Lennek Dienes (2007) Xinyu Miao Su Baran Nosratpour Chacko Menika Sharma Dienes S. Su BRC visit 10 Vaibhav Wasnik Dienes
21 Students (for Dienes, Su and Toussaint) Sky Bauman Dienes Steve Bildstein Toussaint (2005) Chris Krenke Chacko Ethan Dolle Su Walter Freeman Toussaint Mike Lennek Dienes (2007) Xinyu Miao Su Baran Nosratpour Chacko Menika Sharma Dienes S. Su BRC visit 10 Vaibhav Wasnik Dienes
22 Close research connections to other groups - Nuclear physics Barrett, Fleming, van Kolck Heavy Ion Rafelski, Thews Experimental high energy Rutherfoord, Shupe, Johns, Cheu, Varnes Theoretical astrophysics group Fang, Melia, Ozel, Psaltis S. Su BRC visit 11
23 Research S. Su BRC visit 12
24 theor Pheno Model-analyzers Model-builders LHC Physics Energy S. Su BRC visit 13
25 theor Pheno Model-analyzers Model-builders 10-3 GeV LHC Physics Energy S. Su BRC visit 13
26 theor Pheno Model-analyzers Model-builders Toussaint 10-3 GeV LHC Physics Energy S. Su BRC visit 13
27 theor Pheno Model-analyzers Model-builders Toussaint LHC Physics Energy 10-3 GeV 10 3 GeV q l g h S. Su BRC visit 13
28 theor Pheno Model-analyzers Su Model-builders Toussaint LHC Physics Energy 10-3 GeV 10 3 GeV q l g h S. Su BRC visit 13
29 theor Pheno Model-analyzers Su Model-builders Toussaint Chacko LHC Physics Energy 10-3 GeV 10 3 GeV q l g h S. Su BRC visit 13
30 theor Pheno Model-analyzers Su Model-builders Toussaint Chacko LHC Physics Energy 10-3 GeV 10 3 GeV q l g h GeV S. Su BRC visit 13
31 theor Pheno Model-analyzers Su Model-builders Toussaint Chacko Dienes LHC Physics Energy 10-3 GeV 10 3 GeV q l g h GeV S. Su BRC visit 13
32 Lattice QCD at U. of A. - D. Toussaint Calculations including dynamical quarks The MILC Collaboration 14 Physicists, 9 institutions at Arizona: Doug Toussaint, Alexei Bazavov, Walter Freeman The Fermilab/MILC Collaboration add the Fermilab group The HotQCD Collaboration High temperature QCD, using the Livermore machines The USQCD Collaboration Collaboration of collaborations - hardware and software for lattice work S. Su BRC visit 14
33 - 1. Demonstrate control of QCD calculations by calculating known things 2. Calculate matrix elements needed to find standard model parameters for experiments 3. or maybe beyond the standard model? 4. Understand the workings of QCD (confinement) 5. Hadronic phenomenology, for example low energy constants in chiral perturbation theory 6. Development of techniques for better simulations S. Su BRC visit 15
34 - Lattice QCD can now compute some things with accuracy of a few percent. Ratios of lattice results to experimental values for gold plated things. S. Su BRC visit 16
35 Electroweak Physics at U. of A - Z. Chacko, S. Su Standard Model: a successful model Many open questions requires new physics beyond the SM S. Su BRC visit 17
36 Electroweak Physics at U. of A - Z. Chacko, S. Su Standard Model: a successful model We work on physics beyond the SM that could potentially be discovered in the current and upcoming experiments. Many open questions requires new physics beyond the SM S. Su BRC visit 17
37 Electroweak Physics at U. of A - Z. Chacko Supersymmetry: boson fermion, extension of Lorentz symmetry Extra dimension: D > 4? Grand unification: weak, strong and electromagnetic forces a single grand unifying force? Neutrino physics: origin of neutrino masses? Cosmology: past history / future of the universe? Modification of Einstein gravity: modifications possible? experimental constraints? S. Su BRC visit 18
38 Electroweak Physics at U. of A - Working on similar stuff as Chacko. However, focus on S. Su Theory Experiments S. Su BRC visit 19
39 Electroweak Physics at U. of A - Working on similar stuff as Chacko. However, focus on S. Su Theory Experiments Particle physics Astrophysics S. Su BRC visit 19
40 Electroweak Physics at U. of A - Working on similar stuff as Chacko. However, focus on S. Su Theory Experiments Particle physics Astrophysics Dark matter, dark energy CMB, BBN Baryongenesis S. Su BRC visit 19
41 String Phenomenology at U. of A K. Dienes - String Phenomenology S. Su BRC visit 20
42 String Phenomenology at U. of A K. Dienes - the interplay or meeting-ground between Planck-scale physics and TeV-scale physics the art of using the new insights from string theory in order to understand, explain, and predict what physics at next energy scale is going to look like String Phenomenology S. Su BRC visit 20
43 String Phenomenology at U. of A K. Dienes - String Phenomenology S. Su BRC visit 20
44 String Phenomenology at U. of A K. Dienes - String Phenomenology Standard Model choice of gauge group number of generations masses mixings, etc S. Su BRC visit 20
45 String Phenomenology at U. of A K. Dienes - String Phenomenology Standard Model choice of gauge group number of generations masses Extensions to SM: SUSY GUT s hidden sectors mixings, etc technicolor S. Su BRC visit 20
46 String Phenomenology at U. of A Formal Issues: string vacuum selection non-pert. dynamics string duality K. Dienes - new mathematical structure String Phenomenology Standard Model choice of gauge group number of generations masses Extensions to SM: SUSY GUT s hidden sectors mixings, etc technicolor S. Su BRC visit 20
47 String Phenomenology at U. of A K. Dienes - Formal Issues: string vacuum selection non-pert. dynamics string duality new mathematical structure String Cosmology: role of dilaton effects of light d.o.f. s extra dimensions CC problem String Phenomenology Standard Model choice of gauge group number of generations masses Extensions to SM: SUSY GUT s hidden sectors mixings, etc technicolor S. Su BRC visit 20
48 Research related Activities S. Su BRC visit 21
49 Research related Activities Seminars, colloquiua and Visitors - Group meetings journal club (with nuclear theory group) brown bag lunch (with nuclear theory group) discussion group on dark energy and early universe (with theoretical astrophysics group and astronomy dept.) Summer schools and conferences lecture at summer schools, etc. plenary talks at conferences/workshops organize conferences/workshops SUSY03, LATTICE06, Rethinking Gravity, string landscape workshop... S. Su BRC visit 22
50 Urgent Need S. Su BRC visit 23
51 Urgent Need Replacement of Chacko! S. Su BRC visit 23
52 LHC Era LHC (2008) LHC (2008): golden era for particle physics p p Theoretical particle physics: critical - what to expect? - How to interpret? For Arizona to maintain its influence and impact in the overall LHC enterprise a strong HEP theory group! S. Su BRC visit 24
53 theor Pheno Su Model-analyzers Model-builders Toussaint Chacko Dienes LHC Physics 10-3 GeV 10 3 GeV Energy GeV S. Su BRC visit 25
54 theor Pheno Sarcevic Su Model-analyzers Model-builders Toussaint Chacko Dienes LHC Physics 10-3 GeV 10 3 GeV Energy GeV S. Su BRC visit 25
55 theor Pheno Sarcevic Su Model-analyzers Model-builders Toussaint Chacko Dienes LHC Physics 10-3 GeV 10 3 GeV Energy GeV HEP theory group has been highly successful by any measure of excellence! S. Su BRC visit 25
56 theor Pheno Sarcevic Su Model-analyzers Model-builders Toussaint LHC-energy model builder Dienes LHC Physics 10-3 GeV 10 3 GeV Energy GeV HEP theory group has been highly successful by any measure of excellence! S. Su BRC visit 25
57 This can not wait! Imminent turn on of LHC (finally!) Remain competitive with other universities Danger of further external raid, melt-down of HEP theory group Minimal start-up, immense payoff Sustain current grant support Aggressive, smart hiring over past decade Department-wide agreement: top priority S. Su BRC visit 26
58 This can not wait! Imminent turn on of LHC (finally!) Remain competitive with other universities Danger of further external raid, melt-down of HEP theory group Minimal start-up, immense payoff Sustain current grant support Aggressive, smart hiring over past decade Department-wide agreement: top priority Need to move aggressively right now. S. Su BRC visit 26
59 Thanks! S. Su BRC visit 27
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