Super. B The Super Flavor Factory in Italy David Hitlin Phito. Psi 09 October 13, 2009 David Hitlin Phito. Psi 09 Oct. 13, 2009 1
CKM Fitter results as of Moriond 2009 The BABAR and Belle CP asymmetry measurements together with improved precision in other measurements have produced a set of highly overconstrained tests, which grosso modo, are well-satisfied A closer look, however, reveals some issues David Hitlin Phito. Psi 09 Oct. 13, 2009 2
What is Super. B and why do we need it? Ø The motivation to continue e+e- flavor physics studies with a Super B factory beyond the BABAR/Belle/(LHCb) era lies in its ability to make measurements that have sensitivity to physics beyond the Standard Model Ø This sensitivity extends to New Physics in b, c and decay Ø A data sample of 50 -75 ab-1 is required to provide this sensitivity Ø BABAR +Belle total sample is <2 ab-1 Ø A luminosity in the range of 1036 cm-2 s-1 is required to integrate a sample of this size in a reasonable time: 1036 15 ab-1/Snowmass Year Ø The Italian machine, called Super. B, is to be built at LNF or on the campus of Rome II Univ (Tor Vergata) Ø The machine uses a novel design to produce high luminosity with currents comparable to those in the current generation of colliders Ø Asymmetric energy rings ( ~4 x 7 Ge. V) with very low emittance, similar to those developed for the ILC damping rings and high brightness light sources Ø New type of final focus – a “crabbed waist” Ø Longitudinally polarized (~80%) LER beam using SLAC polarized gun Ø Luminosity of ~1035 in the 4 Ge. V region Ø Design of an appropriate detector as an upgrade of BABAR is a fairly straightforward problem Ø Luminosity-related backgrounds present the biggest issues David Hitlin Phito. Psi 09 Oct. 13, 2009 3
What’s the killer app? Is it the ability to discover lepton flavor-violating decays and determine the chirality of the LFV coupling ? Ø Neutrino oscillations demonstrate theexistence of neutral LFV couplings Ø Charged LFV are very small in the Standard Model, but measureable at Super. B Ø Is it the unique sensitivity to new CP phases beyond CKM in B and D decay through studies of direct and indirect CP asymmetries? Ø Is it the sensitivity to the existence of a fourth quark generation ? Ø Is it the sensitivity to right-handed currents ? Ø Is it the sensitive tests of CPT invariance at the highest available q 2 made possible by exploiting quantum coherence ? Ø Is it the whole panoply of measurements and the pattern of effects uncovered that can serve as a “DNA chip” for New Physics found at LHC ? Ø David Hitlin Phito. Psi 09 Oct. 13, 2009 4
Super. B at the Frascati site David Hitlin Phito. Psi 09 Oct. 13, 2009 5
Super. B at the Tor Vergata site Roman Villa Circumference 1. 8 km Collider Hall Super. B LINAC SPARX David Hitlin Phito. Psi 09 Oct. 13, 2009 6
Super. B parameter list(s) 17 David Hitlin Phito. Psi 09 Oct. 13, 2009 7
Crabbed waist beam distribution at the IP waist line is orthogonal to the axis of bunch Crab sextupoles OFF waist moves to the axis of other beam Crab sextupoles ON All particles from both beams collide in the minimum y region, with a net luminosity gain David Hitlin Phito. Psi 09 Oct. 13, 2009 8 E. Paoloni
The Super. B detector is an upgrade of BABAR Super. B Ø New SVT with pixel Layer 0 Ø Possible forward PID Ø New DCH Ø New EMC forward & rear endcap calorimeters Ø Smaller DIRC SOB Ø Improved muon ID David Hitlin Phito. Psi 09 Oct. 13, 2009 9
3 Chapters : Physics Case Detector Machine 444 pages 320 signers ~80 institutions David Hitlin A Technical Design Report is scheduled for the end of 2010 A set of shorter interim progress reports will be issued early next year Phito. Psi 09 Oct. 13, 2009 10
When, who, where ? Ø The Super. B accelerator and detector effort has produced a CDR, and is now in the middle of a two year TDR phase Ø Effort from Italy, US, France, Russia, Canada, UK, Spain, Norway Ø European roadmap recognizes the Super. B project Ø Progress reported regularly to the CERN Strategy Group Ø US DOE P 5 report includes Super. B at Scenario B Ø Approval process is proceeding apace in Italy Ø Science and Education Ministry has recommended the project to the Economics Ministry ØAnticipate a decision by the end of the year Ø Site selection soon thereafter Ø We will form the detector/physics collaboration within months of decision Ø Five year construction period Ø Many PEP-II and BABAR components can be re-used Ø PEP-II: Magnets, RF, vacuum components, …. Ø BABAR: Flux return, solenoid, barrel calorimeter, …. David Hitlin Phito. Psi 09 Oct. 13, 2009 11
Many SM extensions yield measurable effects in flavor physics Little Higgs w/ MFV UV fix Generic Little Higgs Extra dim w/ SM on brane Generic extra dim w SM in bulk Supersoft SUSY breaking Dirac gauginos MSSM MFV low tan SM-like flavor physics SUSY GUTs MSSM MFV large tan Effective SUSY Observable effects of New Physics after G. Hiller David Hitlin Phito. Psi 09 Oct. 13, 2009 12
Lepton Flavor Violation in decays Super B Factory sensitivity directly confronts New Physics models Super. B sensitivity For 75 ab-1 We expect to see LFV events, not just improve limits David Hitlin Phito. Psi 09 Oct. 13, 2009 13
Lepton Flavor Violation in decays Impact of q 13 in a SUSY seesaw model Lepton sector constraints in an SU(3)-flavored MSSM Lightest slepton mass Discrimination between SUSY and LHT SO(10) GUT 107 BR (t→mg) Calibbi, Jones Perez, Masiero, Park, Porod & Vives ar. Xiv 0907. 4069 v 2 SO(10) MSSM LFV from PMNS Super. B LFV from CKM David Hitlin M 1/2 Antusch, Arganda, Herrero, Teixeira, JHEP 0611: 090, 2006 The ratio t→ lll / t→ mg is not suppressed in LHT by ae as in MSSM Phito. Psi 09 Oct. 13, 2009 14
Polarized ’s can probe the chiral structure of LFV in a model-independent manner A longitudinally polarized electron beam, producing polarized ’s, can determinate the chiral structure of lepton flavor-violating interactions David Hitlin Phito. Psi 09 Dassinger, Feldmann, Mannel, and Turczyk JHEP 0710: 039, 2007; [See also Matsuzaki and Sanda Phys. Rev. D 77: 073003, 2008 ] Oct. 13, 2009 15
mixing is now well-established and large D 0 K decay time analysis BABAR: PRL 98 211802 (2007) 3. 9 D 0 K K vs K lifetime difference analysis Belle: PRL 98 211803 (2007) 3. 2 D 0 Ks time dependent amplitude analysis Belle: PRL 99 131803 (2007) 2. 2 D 0 K decay time analysis CDF: PRL 100, 121802 (2008) 3. 8 D 0 K K vs K lifetime difference analysis BABAR: PRD 78, 011105 R (2008) 3. 0 D 0 K 0 time dependent amplitude analysis BABAR: ar. Xiv: 0807, 4544 (2008) 3. 1 D 0 K relative strong phase using quantumcorrelated measurements in e+e- CLEO-c: PRD 78, 012001, (2008) D 0 K- + and K+K- lifetime ratios BABAR: EPS 2009 4. 1 Significance of all mixing results (HFAG Preliminary– EPS 2009): 10. 2 s This raises the exciting possibility of searching for CP violation + Super B Factory @ 75 ab-1 + David Hitlin Phito. Psi 09 Oct. 13, 2009 16
CP violation in DC=2 mixing in an LHT model |q/p| from D→K , K . . 75 ab-1 LHT model Little Higgs w T parity Bigi, Blanke, Buras & Recksiegel ar. Xiv: 0904. 1545 v 3 [hep-ph] David Hitlin Phito. Psi 09 Oct. 13, 2009 17
A variety of analyses have pinpointed tensions in the UT Ø These are all at the 2 -3 s level, but occur in several places e. g. , Lunghi and Soni analysis David Hitlin Phito. Psi 09 Oct. 13, 2009 18
Does the agreement of the overconstrained tests stand up to detailed scrutiny ? Ø There is actually some tension, and there are enough constraints to explore these issues Ø Caveats: Ø There may be Standard Model explanations for some effects Ø All issues are at the <3 s level Ø Inclusive and exclusive Vub determinations are not in good agreement Ø There also issues with inclusive/exclusive Vcb Ø The B(B→ ) conflict Ø The agreement of the fitted, i. e. , SM-predicted value of sin 2 vs the directly measured value using tree decays and loop decays is not perfect Ø The Bs → ψϕ phase Ø The K problem David Hitlin Phito. Psi 09 Oct. 13, 2009 19
The B(B→tn) conflict Effectively a measurement of f. B Determines same constraint B(B→ ) also constrains Higgs doublet models G. Eigen David Hitlin Phito. Psi 09 Oct. 13, 2009 20
Is there a fourth quark generation ? Ø A fourth generation CKM-like mixing matrix has Ø 2 additional quark masses Ø 3 additional mixing angles Ø 2 additional CP-violating phases Ø A recent analysis by Bobrowski, Lenz, Reidl and Rohrwild shows that large regions of the new parameter spaces are still allowed Ø Super. B factories will be the primary tool to close this window, or, perhaps, to find significantly non-zero values of these fourth generation parameters q 24 d 14 q 14 David Hitlin Phito. Psi 09 d 13 Oct. 13, 2009 21
CPV Probes of New Physics q In the Standard Model we expect the same value for “sin 2 ” in modes, but different SUSY models can produce different asymmetries q Since the penguin modes have branching fractions one or two orders of magnitude less than tree modes, a great deal of luminosity is required to make these measurements to meaningful precision Wb u, c, t David Hitlin Hs b u, c, t ~ g, 0 s b Phito. Psi 09 ~~~ u, c, t s b ~ ~~ d, s, b Oct. 13, 2009 s 22
New Physics in CPV: Wb B 0 s s s d t d d ~ g b ~ ~ b X s sin 2 b from s Penguins… Many channels can show effects in the range DS~(0. 01 -0. 04) Super. B 75 ab-1 K 0 s (*) theory limited David Hitlin Phito. Psi 09 Oct. 13, 2009 23
Precision of “sin 2 ” measurement in B g K 0 J/y. K 0 David Hitlin Phito. Psi 09 Oct. 13, 2009 24
Kinematic distributions in 1 FL 0. 5 0 1 SM C 7= – C 7 SM AFB 0. 5 0 David Hitlin Phito. Psi 09 Oct. 13, 2009 25
Much more data is required for a definitive result Ø Can be pursued with exclusive or inclusive reconstruction Ø A measure of the relative merits is the precision in determination of the zero Exclusive Inclusive Theory error: 9% + O(L/mb) uncertainty Egede, Hurth, Matias, Ramon, Reece arxiv: 0807. 2589 Theory error: ~5% Huber, Hurth, Lunghi arxiv: 0712. 3009 Experimental error (SHLC): 2. 1% Experimental error (Super B Factory): 4 -6% David Hitlin Phito. Psi 09 Oct. 13, 2009 26
David Hitlin Phito. Psi 09 Oct. 13, 2009 27
A Super B Factory is a DNA chip for New Physics David Hitlin Phito. Psi 09 Oct. 13, 2009 28
Conclusions Ø A new generation of flavor physics experiments will play a vital role in understanding new physics found at LHC Ø A full set of constraints requires studies of EDMs, (g-2) , rare and decays, e conversion and rare K, D and B decays Ø High statistics (50 -75 ab-1 ) data samples at e+e- Super B Factories provide both Ø Discovery potential Ø charged lepton flavor violation Ø CPV in mixing, and Ø A DNA chip to discriminate between model of New Physics Ø The achievable levels of sensitivity in rare b, c and decays provide substantial coverage in the parameter space Ø The Super. B program, of course, overlaps with the programs of LHC flavor experiments such as LHCb, but the e+e- environment makes possible a substantial number of unique and important physics measurements in areas sensitive to New Physics David Hitlin Phito. Psi 09 Oct. 13, 2009 29
David Hitlin Phito. Psi 09 Oct. 13, 2009 30
Two nascent efforts >80 ab-1 after 6 years 50 ab-1 by ~2020 L~8 x 1035 10 ab-1 ~ 2016 L~2 x 1035 3 year shutdown for upgrade 2015? 2020? Both now employ versions of the “Italian scheme”: Ø Low emittance rings with large crossing angles David Hitlin Phito. Psi 09 Oct. 13, 2009 31
B Physics: (4 S) Charm mixing and CPV Charm FCNC Bs Physics: (5 S) Physics David Hitlin Phito. Psi 09 Oct. 13, 2009 32
The pattern of deviation from the SM values is diagnostic Model Bd Unitarity Time-dep. CPV Rare B decay Other signals - - Bd mixing - B → (D)* b → sl + l − Bs → Bs mixing - B → KS B → K∗ - Bs mixing Bd mixing B → KS - - Split fermions in large extra dimensions Bd mixing - b → sl +l − mixing Bulk fermions in warped extra dimensions Bd mixing B → KS b → sl +l − Bs mixing - b → sl +l − b → s m. SUGRA (moderate tan ) m. SUGRA (large tan ) SUSY GUT with R Effective SUSY KK graviton exchange Universal extra dimensions David Hitlin - Phito. Psi 09 LFV, n EDM ACP (b→s ) b → sl +l − Bs mixing - b → sl +l − mixing K → Oct. 13, 2009 33
SUSY mass spectra for the 9 Snowmass points & slopes 1500 1000 500 250 SPS-1 SPS-2 SPS-3 SPS-4 SPS-5 SPS-6 SPS-7 SPS-8 SPS-9 Ghodbane and Martyn David Hitlin Phito. Psi 09 Oct. 13, 2009 34
Squark mass matrix (d sector) Super B Factories LHC David Hitlin Phito. Psi 09 Oct. 13, 2009 35
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