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Super B The Super Flavor Factory

Super B The Super Flavor Factory. David Hitlin DOE Annual Review of Caltech June 29, 2009. Super B – the Super Flavor Factory. The Caltech group led the way in recognizing the importance of continuing e + e - flavor studies substantially beyond the level of B A B AR and Belle

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Super B The Super Flavor Factory

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  1. SuperBThe Super Flavor Factory David Hitlin DOE Annual Review of Caltech June 29, 2009

  2. SuperB – the Super Flavor Factory The Caltech group led the way in recognizing the importance of continuing e+e- flavor studies substantially beyond the level of BABAR and Belle The crucial role that flavor physics will play in understanding New Physics found at the LHC is becoming ever more clear to the community There is clear discovery potential Lepton flavor violation New sources of CP violation Rare b,c and t decays that will be crucial to interpreting New Physics found at the LHC Sensitivity to New Physics at scales accessible to the LHC requires a large data sample: 50-75 ab-1⇒ luminosity of 1036 =15 ab-1/year SuperB, proposed for construction at or near the INFN Frascati laboratory,can provide this luminosity with low power consumption and manageable backgrounds, using a novel collider concept: Very low emittance rings, similar to the ILC damping rings and a new final focus scheme – the crabbed waist The design includes a linearly polarized electron beam (LER), which provides unique capabilities in studies of t production and decay

  3. Antonio Masiero at the June 2009 Perugia Workshop

  4. Primary physics objectives of a Super Flavor Factory Perform measurements in the flavor sector such that: If new particles are discovered at LHC we are able to study the flavor structure of the New Physics If the New Physics scale is beyond the reach of the LHC, explore the New Physics scale More specifically Is there charged lepton flavor violation (LFV) ? Are there new CP-violating phases in b,c or t decay ? Are there new right-handed currents ? Are there new loop contributions to flavor-changing neutral currents Are there new Higgs fields ? Is there new flavor symmetry that elucidates the CKM hierarchy ? BABAR provides an excellent base for an upgraded detector that can address these questions in the SuperB 1036 asymmetric e+e- environment

  5. B Physics: U(4S) Charm mixing and CPV Charm FCNC Bs Physics: U(5S) tPhysics

  6. The SuperB machine design is evolving John Seeman – miniMAC April 2009

  7. Crabbed waist beam distribution at the IP Crab sextupoles OFF waist is orthogonal to the axis of bunch Crab sextupoles ON waist moves to the axis of other beam All particles from both beams collide in the minimum by region, with a net luminosity gain E. Paoloni

  8. Crabbed waist has been convincingly tested at DAFNE

  9. The March 2009 design has been reviewed by the SuperB Machine Advisory Committee Klaus Balewski (DESY), John Corlett (LBNL), Jonathan Dorfan (SLAC, Chair), Stuart Henderson (ORNL), Tom Himel (SLAC), Claudio Pellegrini (UCLA), Daniel Schulte (CERN), Ferdi Willeke (BNL), Andy Wolski (Liverpool, phone), Frank Zimmermann (CERN) Closeout report of the second miniMAC review - April 24, 2009 …. “Mini-MAC now feels secure in enthusiastically encouraging the SuperB design team to proceed to the TDR phase, with confidence that the design parameters are achievable” The design takes as a constraint the re-use of PEP-II magnet and RF components Many details of the design, of course, remain to be worked out. We aim for a TDR at the end of 2010, with an intermediate report by the end of 2009

  10. Prospects for SuperB • The CERN Strategy Group has “taken note” that the SuperB project is consistent with the European HEP roadmap • INFN is working for a funding decision in 2009 • The Region of Lazio has committed funds for a tunnel and associated structures, contingent upon Italian central government approval • An excellent bid (15K€/m) for the tunnel + associated structures is in hand • P5 recommended US participation in an overseas B Factory in Scenario B or above • INFN has requested PEP-II and BABAR components from DOE • The project has published a CDRand a physics update • Work is now underway on comprehensive TDR volumes on the accelerator, detector and physics performance – end of 2010 • A Progress Report will be issued by the end of 2009 320 signers 80 institutions

  11. SITES : Tor Vergata……..

  12. LNF option

  13. SuperB Experimental Hall & Transfer Line - +

  14. Caltech’s role in SuperB and the US (proto)collaboration • We originated the concept of a 1036e+e- collider in February, 2001 and ran a year-long workshop “The Discovery Potential of a Super B Factory at 1036 Luminosity” in 2003 • Caltech has been instrumental in organizing the SuperB project and is heavily involved in the TDR activities: • David Hitlin is Deputy Director, a member of the Steering Committee, and has been co-convener of the EMC group • Frank Porter will become co-convener of the EMC group in the Fall • Ren-yuan Zhu is leading development of LYSO crystals for SuperB and SLHC • Chih-hsiang Cheng is the fast simulation EMC developer • Alexander Rakitin is optimizing the design of the backward calorimeter • We are playing an important role in preparations for a beam test of an LYSO crystal array of anticipated for November 2009 • We will play a leading role in organizing a US detector/physics collaboration when the project is approved by INFN and DOE agrees to US participation • Currently active: Caltech, Cincinnati, LBNL, Maryland, SLAC, …. • We anticipate a US contingent of ~100 members

  15. Possible barrel extension Rear endcap Forward endcap

  16. C.-h. Cheng Fast simulation of 2M BfKsevents

  17. Btntdecay: stringent limits on New PhysicsA. Rakitin E • Search for a lepton from t decay + missing energy, recoiling against reconstructed hadronic B decay • Sensitivity depends on detector hermeticity • BABAR coverage in backward direction is compromised by DIRC PID • This can be substantially improved in SuperB by covering backward solid angle with even a crude calorimeter • Progress report: • Signal • Two background modes thus far: E. Lopez-Fogliani, et al. arXiv 0906.4911Bayesian CNSSM parameter search

  18. Btnt S/B with backward endcap A. Rakitin • S/B is significantly improved for both backgrounds

  19. Ren-yuan Zhu, with ADR funds, has been for several years, working on the development of LYSO crystals for HEP Very attractive for the SuperB endcap EMC and the CMS SLHC upgrade

  20. A beam test of the forward EMC endcap configuration in tagged photon and e- beams is planned for LNF in November A 5x5 projective LYSO array will be usedwith a CsI(Tl) surround to catchthe outer few percent of shower CMS APD readout module 2 @ 5mm x 5mm APD will be used (10x10mm APDs are now available) Photodiodes are also underconsideration We have borrowed 16 spare CLEO-II CsI(Tl) crystals for the outer section

  21. Is there a fourth quark generation ? • A fourth generation CKM-like mixing matrix has • 2 additional quark masses • 3 additional mixing angles • 2 additional CP-violating phases • A recent analysis by Bobrowski, Lenz, Reidl and Rohrwild shows that largeregions of the new parameter spacesare still allowed • SuperB will be the primary tool to close down, or, perhaps find, non-zerovalues of these fourth generation parameters q24 d14 q14 d13

  22. LFV in t decays: SuperB capability SuperB sensitivity directly confronts many New Physics models BABAR SuperBsensitivity For 75 ab-1 We expect to see LFV events, not just improve limits

  23. Polarizedt’s can probe the chiral structure of LFV Flipping the helicity of the polarizedelectron beam allows us to determine the chiral structureof dimension 6 four fermionlepton flavor-violating interactions Dassinger, Feldmann, Mannel, and TurczykJHEP 0710:039,2007; [See also Matsuzaki and SandaarXiv:0711.0792 [hep-ph]

  24. Why do we need a very large sample ~75ab-1 ? Example: CPV in loop B decays Determination of coupling [in this case : (d13)LL] with 10 ab-1 and 75 ab-1 Im (d13)LL Im (d13)LL SM SM Re (d13)LL Re (d13)LL

  25. Conclusions • High statistics flavor physics (50-75 ab-1) with SuperB will provide discovery potential and information vital to interpret New Physics found at LHC • The achievable levels of sensitivity in rare b, c and t decays allow substantial coverage in the parameter space of new physics • SuperB presents a strong physics opportunity for the US community • US participation in SuperB will leverage $270M of PEP-II and BABAR components through an in-kind contribution • New funding of $10-20M/year over the TDR and construction period will also be needed to allow US participation in design and construction of the collider and detector upgrade • Such participation in encouraged by P5 in Scenario B and above • We are working towards a turn-on date of 2015/16 • The Caltech group can, as it did in PEP-II and BABAR, play a central role in SuperB and the construction of a US contingent of the Collaboration • We are transitioning from the current intense analysis phase of BABAR into the TDR phase of SuperB

  26. Interplay between metrology and New Physics sensitivity SuperB+Lattice improvements Today r = ± 0.0028 h = ± 0.0024 r = 0.163 ± 0.028 h = 0.344± 0.016 Improving the precision of Unitarity Triangle measurements, along with reducing theoretical uncertainties, can provide evidence for New Physics

  27. LFV 5s disc B 2 B MVF-NP extensions : meg vanishes as s130 tmgis independent of s13 CMSSM : meg vanishes at all SPS points

  28. Beyond MFV LFV from CKM LFV from PMNS 107 B (tmg) now SO(10) MSSM SuperB SuperB M1/2 SUSY GUT now SuperB Allowed by Dms From Bs phase Recent work : J.K.Parry, H.-H. Zhang hep-ph/0710.5443

  29. Polarizedt’s can probe the chiral structure of LFV Flipping the helicity of the polarizedelectron beam allows us to determine the chiral structureof dimension 6 four fermionlepton flavor-violating interactions Dassinger, Feldmann, Mannel, and TurczykJHEP 0710:039,2007; [See also Matsuzaki and SandaarXiv:0711.0792 [hep-ph]

  30. Minimal Flavor Violation : SNOWMASS points SPS4 is ruled out by exp value of B(Bsg) SPS1a is the least favorable for flavor effects, but SuperB and only SuperBcan observe 2s deviations in several observables

  31. New Physics in CPV: sin2b from “s Penguins”… W- Many channels can show effects in the range DS~(0.01-0.04) s b f t s SuperB B0d s d d K0 ~ g ~ b s ~ b s X (*) theory limited

  32. 1 10-1 10-2 d is measured with a significance >3s away from zero 1 10 MSSM + generic soft SUSY breaking terms New Physics contribution (2-3 transitions) • Flavor-changing NP effects in the squark propagator • NP scale SUSY mass • flavor-violating coupling ~ g ~ b s ~ b s X 0.1 = (0.026 ± 0.005) Arg(d23)LR=(44.5± 2.6)o 0.01 1 10

  33. Exhibit B: SM Branching fractions: Current  10ab-1  75ab-1 Actual limit

  34. CP Violation in charm NOW SuperB

  35. A Super Flavor Factory is also a t factoryLepton Flavor Violation polarized e- beam: reduced background Very important order of magnitude 10-8 10-9 Complimentarity with meg

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