1. Future programs for flavor physics at hadron and lepton colliders Yuanning Gao Center for High Energy Physics (TUHEP) Tsinghua University Thanks to: F. Bossi, S. Eydelman, F.Harris, N. Katayama, S.E.Mueller, Y.F.Wang, M. Yamauchi …

2. August 17, 2007Y.Gao / LP072 Plan of the talk Flavor physics now and the future Brief overview of B physics at LHC Programs for flavor physics at future e+e- colliders Summary and perspectives

3. August 17, 2007Y.Gao / LP073 Flavor physics at a glance Focus on future programs at colliders on -s-quark: Kaon factory -c-quark and  -lepton: tau-charm factory -b-quark: Super B-factory

4. August 17, 2007Y.Gao / LP074 Flavor physics at a glance Flavor Physics (for a non-expert at least) is -Strange: GIM/CKM too good, too easy,… but true Focus on future programs at colliders on -s-quark: Kaon factory -c-quark and  -lepton: tau-charm factory -b-quark: Super B-factory

5. August 17, 2007Y.Gao / LP075 M. Antonelli Universality, GIM, CKM all work fine at high precision.

6. August 17, 2007Y.Gao / LP076 Flavor physics at a glance Flavor Physics (for a non-expert at least) is -Strange: GIM/CKM too good, too easy,… but true -Charming: probing NP beyond TeV scale Focus on future programs at colliders on -s-quark: Kaon factory -c-quark and  -lepton: tau-charm factory -b-quark: Super B-factory

7. August 17, 2007Y.Gao / LP077 NP strongly constrained by the knowledge of flavor physics G. Isidori

8. August 17, 2007Y.Gao / LP078 Flavor physics at a glance Focus on future programs at colliders on -s-quark: Kaon factory -c-quark and  -lepton: tau-charm factory -b-quark: Super B-factory Flavor Physics (for a non-expert at least) is -Strange: GIM/CKM too good, too easy,… but true -Charming: probing NP beyond TeV scale -Beautiful: technology & technique, fruitful results (see previous talks at this conference)

9. August 17, 2007Y.Gao / LP079 Why future programs (1) (A far from complete list ) Search for hits of new physics. - Further (over) constrain the CKM matrix from tree levels (less sensitive to NP) and from loop levels (sensitive to NP) - Rare decays of charm, bottom and tau; charm EDM, kaon interferometer, FCNC decays … Understanding the perturbative/non-perturbative nature of QCD. Improve theoretical predictions - Hadron spectroscopy (quark+gluon), form factors … - R measurements

10. August 17, 2007Y.Gao / LP0710 Comments for the worst scenario (MFV) The (g-2)  is showing hints of new physics? Anything else from other places, say the quark sector? Why future programs (2) G. Isidori’s talk

11. August 17, 2007Y.Gao / LP0711 How future programs perform Precision is the Lord ! - Very high luminosity (10-100) x Current machine - State of the art detectors fast DAQ tracking/vertexing; calorimetries for neutrals; PID; full angle coverage - Analysis techniques - Precise theory, theory & experiment interplay

12. August 17, 2007Y.Gao / LP0712 Brief overview of B physics at LHC LHC has great potential for b physics Detectors with - high precision tracking/vertexing - efficient trigger with  in the final states - efficient trigger with hadronic final states (LHCb) - good PID for  /K separation (LHCb)

13. August 17, 2007Y.Gao / LP0713

14. August 17, 2007Y.Gao / LP0714 Machine and Detector installation is underway

15. August 17, 2007Y.Gao / LP0715 2013-2020(?) Super LHCb, 2x10 33, 100 fb -1 T. Nakada

16. August 17, 2007Y.Gao / LP0716

17. August 17, 2007Y.Gao / LP0717 + Penguin decays: B s    Expected precision of σstat (  NP=  tree-  penguin) ~6º from time dependent analysis with 5 years/10fb-1

18. August 17, 2007Y.Gao / LP0718 G. Lanfranchi, Lake Louis Winter Institute, 2007

19. August 17, 2007Y.Gao / LP0719 LHC is also a charm factory ! Dedicated LHCb D* trigger will provide 10 8 flavor tagged D  hh per 2 fb-1. P. Spradlin, CHARM’07

20. August 17, 2007Y.Gao / LP0720 Taken from V. Vagnoni at CKM06-Nagoya Without LHCb With LHCb at 10 fb -1 Will new Physics show up by 2013 ?

21. August 17, 2007Y.Gao / LP0721 e + -e - Colliders: Past, Present and Future

22. August 17, 2007Y.Gao / LP0722 VEPP-2000 Ecm: 2m  - 2.0 GeV Luminosity: 10 32 cm -2 s -1

23. August 17, 2007Y.Gao / LP0723 CMD-3 DetectorUpgraded SND Detector B. Khazin, NP B (Proc. Suppl.) 162 (2006) 327

24. August 17, 2007Y.Gao / LP0724 Physics at VEPP-2000

25. August 17, 2007Y.Gao / LP0725 The collider is in commissioning, first collisions of the beams were achieved in June. Both detectors almost completed their upgrade and this autumn will complete assembling. First physics run may start in a year from now, autumn 2008. see LP07 posters !

26. August 17, 2007Y.Gao / LP0726 DAPNE-2 DAFNE has reached a peak luminosity of 1.4x10 32, ~1.5 fb -1 /year. About 2.5 fb -1 of data delivered to KLOE by 2006. ee e+e+ KLOE detector FINUDA detector

27. August 17, 2007Y.Gao / LP0727 New interaction region will installed (Sep. 2007) for testing “crab waist”. 1 fb -1 for SIDDHA (Kaonic atoms). Upgrade KLOE detector. From summer 2009 for 3-4 years, physics runs again with KLOE-2 detector at Ecm = M . 3-10 fb -1 /year. Possible lower (1.0 GeV) or higher Energy runs(?)

28. August 17, 2007Y.Gao / LP0728 Rich physics programs at the  -factory - improve Vus measurement - LPV from Ke2 decays - neutral kaon interferometer (CPT and QM tests) - rare Ks decays - eta and eta’ decays - hadron cross-section measurements - ….

29. August 17, 2007Y.Gao / LP0729 BEPCII/BESIII SC RF Beams

30. August 17, 2007Y.Gao / LP0730

31. August 17, 2007Y.Gao / LP0731 BEPCII design goal Collider is under installation and also synchrotron mode runs. 1/2008 Cosmic ray test for detectors 3/2008 Detector in place 5/2008 Start data taking

32. August 17, 2007Y.Gao / LP0732 Magnet: 1 T Super conducting MDC: small cell & He gas  xy =130  m s p /p = 0.5% @1GeV dE/dx=6% TOF:  T = 100 ps Barrel 110 ps Endcap Muon ID: 9 layer RPC EMCAL: CsI crystal  E/E = 2.5% @1 GeV  z = 0.6 cm/  E Trigger: Tracks & Showers Pipelined; Latency = 6.4  s Data Acquisition: Event rate = 3 kHz Thruput ~ 50 MB/s BESIII Detector The detector is hermetic for neutral and charged particle with excellent resolution,PID, and large coverage. Two rings, 93 bunches: Luminosity 10 33 cm  s  @1.89GeV 6  10 32 cm  s  @1.55GeV 6  10 32 cm  s  @ 2.1GeV

33. August 17, 2007Y.Gao / LP0733 Charmonium: J/ ,  (2S),  C (1S) in J/  decay,  C{0,1,2},  C (2S) and h C ( 1 P 1 ) in  (2S) decay,  (1D) and so on; Exotics : hybrids, glueballs and other exotics in J/  and  (2S) radiative decays; Baryons and excited baryons in J/  and  (2S) hadronic decays; Mesons and mixing of quark and gluon in J/  and  (2S) decays; Open charm factory : Absolute BR measurements of D and Ds decays, Rare D decay, D 0 -D 0 bar mixing, CP violation,f D+, f Ds, form factors in semi-leptonic D decays, precise measurement of CKM (Vcd, Vcs), CP violation and strong phase in D Dalitz Decays, light spectroscopy in D 0 and D + Dalitz Decays. Electromagnetic form factors and QCD cross section; New Charmonium states above open charm threshold---R values...; tau physics near the threshold. Physics at BESIII

34. August 17, 2007Y.Gao / LP0734 ResonanceMass(GeV) CMS Peak Lum. (10 33 cm -2 s -1 ) Physics Cross Section (nb) Nevents/yr J/  3.0970.6340010  10 9  3.6701.02.412  10 6  (2S)3.6861.06403.2  10 9 D 0 D 0 bar3.7701.03.618  10 6 D+D-D+D- 3.7701.02.814  10 6 DsDs4.0300.60.321.0  10 6 DsDs4.1400.60.672.0  10 6 Average Lum: L = 0.5×Peak Lum.; One year data taking time: T = 10 7 s N event /year =  exp  L  T Production Huge J/  and  (2S) samples at BESIII

35. August 17, 2007Y.Gao / LP0735 Options to increase luminosity (1) crab crossing done at KEKB

36. August 17, 2007Y.Gao / LP0736 Taken from K. Oide, BGM, 4/07/2007

37. August 17, 2007Y.Gao / LP0737 Options to increase luminosity (2) Standard approach

38. August 17, 2007Y.Gao / LP0738

39. August 17, 2007Y.Gao / LP0739 http://superb.kek.jp/

40. August 17, 2007Y.Gao / LP0740 Overlap region zz xx zz xx (1) and (2) have same Luminosity, but (2) has longer bunches and smaller  x (1) Head-on, Short bunches (2) Large crossing angle, long bunches Large Piwinski angle:  = tg(  z /  x Options to increase luminosity (3) Crab waist ( The new idea by P.Raimondi)

41. August 17, 2007Y.Gao / LP0741 KEKBSuperB I (A)1.72.  y * (mm) 60.3  x * (mm) 30020  y * (  m) 30.035  x * (  m) 806  z (mm) 65 L (cm -2 s -1 )1.7 x 10 34 1. x 10 36 Tests with beam in Frascati DAFNE Study Fall 2007

42. August 17, 2007Y.Gao / LP0742 SuperB design features Two rings @ 4 and 7 GeV with ultra low emittances similar to ILC Damping Rings Interaction Region with very strong focusing similar to Linear Colliders Final Focus No beamstrahlung = possible beam recirculation in collider L ~ 10 36 @  (4s) Possible option to run at tau- charm region with L ~ 10 35

43. August 17, 2007Y.Gao / LP0743

44. August 17, 2007Y.Gao / LP0744

45. August 17, 2007Y.Gao / LP0745 Super B-factories by ~201x Possible open options for e+e- factories L ~ O(10 35 -10 36 ) @  (4s) with possible extension to run at  (5s), tau-charm KEK “Standard” Frascati “Crab Waist” LHCb upgrade to Super LHCb pp collisions at 14 TeV L ~ 2x10 33

46. August 17, 2007Y.Gao / LP0746 Super B-factory Taken from M. Yamauchi

47. August 17, 2007Y.Gao / LP0747 Ecm (GeV) 13579 L(cm -2 s -1 ) 10 32 10 33 10 34 10 35 10 36 Under ConstructionUnder Consideration Future flavor programs at e+e- colliders VEPP-2000 BEPCII Super Charm Factory Super B Factory DAPNE-2

48. August 17, 2007Y.Gao / LP0748 Summary and perspectives Future flavor programs at colliders, together with fixed target experiments, will provide further precise measurements on CKM matrix elements, (very) rare decay rates which are sensitive to new physics beyond the Standard Model. Theory – Experiment interplay is essential to maximize the potential of these (expensive) programs. Complementary to experiments at high energy frontier, flavor physics will help us to explore features of the new physics, hopefully in near future.

49. August 17, 2007Y.Gao / LP0749 Backup Slides

50. August 17, 2007Y.Gao / LP0750