The Project Status and perspectives Francesco Forti INFN

The Project: Status and perspectives Francesco Forti, INFN and University, Pisa May 24, 2007 F. Forti - Super. B Project

Outline Introduction n Physics Case n Accelerator n Detector n Budget and Schedule n Conceptual Design Report n Perspectives n May 24, 2007 F. Forti - Super. B Project 2

The Super. B Process n International Super. B Study Group on ¨ ¨ n International steering committee established in 2006, chaired by M. A. Giorgi. Members from ¨ ¨ n Physics case, Machine, Detector Broad community from Babar/PEP-II and elsewhere Canada, France, Germany, Italy, Russia, Spain, UK, US Regular interaction with Japan, Regular workshops and meetings Five workshops held (Frascati x 2, SLAC, Villa Mondragone, Paris) ¨ Super. B Meeting at Daresbury, Accelerator retreat at SLAC ¨ Next workshop in October , 2007 ¨ n Conceptual Design Report ¨ Ready, printed. Copies are available from the LNF library n www. pi. infn. it/Super. B/? q=CDR Describe Physics case, Accelerator, Detector, including costing International review in 2007 More information: www. pi. infn. it/Super. B ¨ ¨ n May 24, 2007 F. Forti - Super. B Project 3

The May 24, 2007 Physics case F. Forti - Super. B Project

The case for a high luminosity flavour factory n n Prejudice: if there is New Physics at the Te. V scale it must have a flavor/CP structure New heavy quanta can be detected through precision measurement of processes involving loop diagrams Statistics of O(50 ab-1 = 50 x 109 B’s) is necessary to reduce the experimental error below theoretical uncertainty for the most sensitive analyses Physics reach is complementary to LHC-LHCb: ¨ ¨ many rare decays are not accessible at LHC; sensitivity to off-diagonal term of squark mixing matrix, test of LFV in t decays possibility of running at different energies: from t threshold to U(5 s) May 24, 2007 F. Forti - Super. B Project 5

UTfit as now and with Super. B Triangle vertex Determined by N. P. free processes 1 ab-1 50 ab-1 With 50 ab-1 g is measured at 1° level Theoretical uncertainties on sides could be reduced: (V. Lubicz, Super. B IV Villa Mondragone nov. 2006) Vub : 2% (excl. ) 2% (incl. )Vcb : 1% (excl. ) 0. 5% (incl. ) May 24, 2007 F. Forti - Super. B Project 6

NP. From conventional measurements? An example: MSSM. . . MSSM with non diagonal mass insertion S. M. May 24, 2007 Constraint from Δmd Constraint from sin 2β & cos 2β Constraint from sin 2β All constraints F. Forti - Super. B Project L. Silvestrini (Super. B IV) 7

Sensitivity comparison with Super LHCb n From mulheim From F. Muheim talk May 24, 2007 F. Forti - Super. B Project 8

D 0 mixing n Recent measurements from Babar and Belle demonstrated Bfactory capabilities in charm physics May 24, 2007 F. Forti - Super. B Project 9

t Richness n n Vus t are an incredibly rich laboratory Super. B will produce as many t’s as B’s Lepton Universality Lepton Flavour Violation May 24, 2007 F. Forti - Super. B Project 10

LFV May 24, 2007 F. Forti - Super. B Project 11

Super. B Physics case n There is a solid case for a Super. B collecting more than 50 ab-1: ¨ Precision measurements allowing to detect discrepancies from the standard model n ¨ ¨ ¨ n Theoretical precision allows (or will allow) this in many channels Rare decay measurements Lepton flavour violation In addition: possibility to run at tau/charm threshold, polarized beam See for example: ¨ ¨ ¨ The Discovery Potential of a Super B Factory (Slac-R-709) Letter of Intent for KEK Super B Factory (KEK Report 2004 -4 ) Physics at Super B Factory (hepex/0406071) Super. B report (hep-ex/0512235) Super. B CDR (INFN/AE-07/02, SLAC-R 856, LAL 07 -15) Many documents available at the URL : www. pi. infn. it/Super. B May 24, 2007 F. Forti - Super. B Project © by Ciuchini 12

The May 24, 2007 F. Forti - Super. B Project Detector

Experimental issues n Babar and Belle designs have proven to be very effective for B-Factory physics ¨ Follow the same ideas for Super. B detector ¨ Try to reuse same components as much as possible n Main issues ¨ Machine backgrounds – not much larger than in Babar/Belle ¨ Beam energy asymmetry – a bit smaller ¨ Strong interaction with machine design n Impact on ¨ Detector segmentation ¨ Radius of beam pipe and first sensitive layer ¨ Radiation hardness May 24, 2007 F. Forti - Super. B Project 14

Detector Layout – Reuse parts of Babar (or Belle) BASELINE OPTION May 24, 2007 F. Forti - Super. B Project 15

Detector R&D Issues n n A Super. B detector is possible with today’s technology Some areas require moderate R&D and engineering developments to improve performance ¨ Thin silicon pixel detector first layer ¨ Drift chamber CF mechanical structure, gas and cell size ¨ Photon detection for DIRC quartz bars ¨ Forward PID system (TOF or focusing RICH) ¨ Forward calorimeter crystals (LSO) ¨ Minos-style scintillator for Instrumented flux return ¨ Electronics and trigger – need to revise Bfactory “½track” trigger style ¨ Computing – large data amount May 24, 2007 F. Forti - Super. B Project 16

CDR Ready !!!! The CDR of Super. B is ready! INFN/AE-07/02, SLAC-R-856, LAL 07 -15 Available at: www. pi. infn. it/Super. B 476 pages Printing in progress Copies can be requested from Lucia. Lilli@pi. infn. it May 24, 2007 F. Forti - Super. B Project 17

Signatures: some numbers n 320 Signatures; 85 institutions n 174 Babar members ¨ 65 non Babar exper. Signatures breakdown by country May 24, 2007 F. Forti - Super. B Project 18

CDR Review n An International Review Committee has been appointed by INFN. ¨ John Dainton – UK/Daresbury, chair ¨ Jacques Lefrancois – F/Orsay ¨ Antonio Masiero – I/Padova ¨ Ralph Heuer – D/ Desy ¨ Daniel Schulte – CERN ¨ Jim Siegrist – USA/LBNL ¨ Young-Kee Kim – USA/FNAL ¨ Hiroaki Aihara – Japan/Tokyo n The Report is expected at the end of summer 2007. May 24, 2007 F. Forti - Super. B Project 19

Next steps n n May 2: applied to FP 7 for machine design study May 4: meeting in this room at LNF to present officially the CDR to INFN. ¨ n May 9 -11: workshop in Paris including joint meeting of Super. B-Super. KEKB communities. ¨ n Super. B name starting to appear in grant requests Next workshop in October ¨ n Organization of detector R&D activities Involvement of broader international community in detector and machine R&D ¨ n R. Petronzio: “We do not celebrate that we approved the project; we celebrate that we want to do it !” The activity of the next months will be dominated by the review process. Interaction with review committee just started Aim at Technical Design Reports in 1 -2 years. May 24, 2007 F. Forti - Super. B Project 20

Super. B where ? n n The Super. B conceptual design is largely site independent A possible site is on the Università di Roma Tor Vergata campus 3 km May 24, 2007 F. Forti - Super. B Project 21

The Università di Roma Tor Vergata Site n n n Area available Strong interest of University and INFN Tunnel at about -12 m Synergy with approved FEL (SPARX) Engineering group created Feasibility study in preparation 750 m May 24, 2007 F. Forti - Super. B Project 22

Super. B Summary and outlook The physics case for a high luminosity B Factory is clearly established n The Super. B accelerator concept allows to reach and exceed the 1036 threshold n There is a growing international interest and participation n R&D is proceeding on various items n A conceptual design report is ready for review n Next issues are: site, money, people n May 24, 2007 F. Forti - Super. B Project 23

BACKUP May 24, 2007 F. Forti - Super. B Project

The May 24, 2007 F. Forti - Super. B Project Budget

Cost estimate n A full cost estimate of the Super. B project has been done ¨ ¨ ¨ n Based on Babar/PEP-II actual costs Escalated from 1995 to 2007 Bottom-up for almost all elements Separate new components from reused elements Replacement value of reused components = how much would it cost today to rebuild those components (extrapolated from Babar/PEP-II costs) ¨ New costs: everything that’s needed today, including refurbishing ¨ Transport is not included, but disassembly and reassembly is. ¨ n Keep separate categories: EDIA: engineering, design, inspection and administration (manmonths) ¨ Labour: technicians (man-months) ¨ Materials and Services: 2007 Euros. ¨ n All details available in the CDR ¨ We have not tried to fully optimize the cost yet. Some reduction might be possible May 24, 2007 F. Forti - Super. B Project 26

Accelerator and site costs Note: site cost estimate not as detailed as other estimates. May 24, 2007 F. Forti - Super. B Project 27

Detector cost Note: options in italics are not summed. We chose to sum the options we considered most likely/necessary. May 24, 2007 F. Forti - Super. B Project 28

Schedule n Overall schedule dominated by: ¨ Site construction ¨ PEP-II/Babar disassembly, transport, and reassembly n We consider possible to reach the commissioning phase after 5 years from T 0. May 24, 2007 F. Forti - Super. B Project 29

What money ? n The Super. B budget model still needs to be fully developed. It is based on the following elements (all being negotiated) ¨ Italian government ad hoc contribution ¨ Regione Lazio contribution ¨ INFN regular budget ¨ EU contribution ¨ In-kind contribution (PEP-II + Babar elements) ¨ Partner countries contributions n Clearly the Super. B project is inherently international and will need to be managed internationally May 24, 2007 F. Forti - Super. B Project 30

What’s in store: Physics reach at Super. B From ’ 05 T. Iijima talk 50 ab-1 Super. B 2 fb-1 LHCb CKM W/n FCNC CPV (b s) 5 ab-1 Super. B May 24, 2007 F. Forti - Super. B Project 31

Tor Vergata and LNF May 24, 2007 F. Forti - Super. B Project 32

Beam Pipe Radius and Detector n Small beam pipe radius possible because of 7+4 Ge. V small beam size Boost bg=. 28 Studied impact of boost on vertex separation (B pp) Instead of 0. 56 ¨ Rest of tracking is Babar ¨ Beam pipe needs to be cooled. Study is in progress to keep total thickness low in the order of % of rad ¨ Separation significance May 24, 2007 Proper time difference resolution F. Forti - Super. B Project 33