At the Nicola Cabibbo Laboratory Tor Vergata, Italy Adrian Bevan: 1
Overview Why? – Physics is not requested in this talk – see back up slides & references for detailed physics motivation. Status – Funding – Site – Machine – Detector – Organisation – UK Involvement Summary 11th July 20112Adrian Bevan
Why? 11th July 20113Adrian Bevan
Why? Just like the LHC we are searching for new physics 11th July 20114Adrian Bevan
Why? Just like the LHC we are searching for new physics Can also do precision SM tests (CKM + EW). N.B. SuperB will be the only experiment to directly and indirectly probe the charm cu triangle, this is a unique test of CKM and is highly sensitive to NP. – A number of observables can only be measured at SuperB – Many observables will be more precise at SuperB than Belle II 11th July 20115Adrian Bevan
11th July 2011Adrian Bevan6
With the exceptions of y CP and K*μμ, there are no planned or existing experiments that will surpass SuperB precision in these modes for at least the next two decades. The best place to measure the other 33 golden modes is SuperB! 11th July 2011Adrian Bevan7
Status Funding Site Choice Machine Detector Organisation UK Involvement 11th July 20118Adrian Bevan
Funding The project was funded by the Italian senate on 14/15 th December Identified funding for the project (need 500M€) – 250M€ new money from Italian government to set up the new facility. – 100M€ from the Italian institute of technology. – $200M in kind contribution from DOE. – Reciprocity agreement between Russia and Italy on Fusion/SuperB will bring additional funding. The cost of the machine/facility is covered. The detector cost is broken down as follows: – Re-use of parts from BaBar: 50% of the cost – INFN will contribute ~25M€ – Overseas partners need to contribute ~25M€ 11th July 20119Adrian Bevan
Site Choice The Nicola Cabibbo Laboratory, Tor Vergata (Rome). – Announced May 2011 at the SuperB Kick off meeting 11th July Adrian Bevan
One tunnel footprint solution (Ground modeling) Experimental Hall Office Building LNF Frascati Rome 11Adrian Bevan
Archeological remains: no important remains are on the SuperB area according to a searching campaign done before the construction of the sport city. Creek: In the middle of the site there is a small torrent. It is almost dried out for long period of the year. Due to the fact that it is not part of a strategic area, there is the possibility to deviate the path connecting the highway guard creek. c/o Sanelli/Tomassini, Elba Kick off meeting th July Adrian Bevan
Machine 11th July Adrian Bevan Lattice parameters stable (this has been the case for some time) Several routes to nominal luminosity. ϒ ( 4S) lumi cm -2 s -1 ψ(3770) lumi cm -2 s -1 All parameters demonstrated individually at machines around the world.... SuperB will bring them together in one place. KEK have now adopted the SuperB low-emittance machine design.
Detector 11th July Adrian Bevan Options Nominal Forward PID Backward calorimeter FDIRC
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Organisation We're now in a transition phase: – Collaboration forming has started – Project management boards are in the process of being set up for: global oversight, machine, detector. – Proto-tech board, Speaker's Bureau, Governance committee etc. are operating now. These will transform into the governance and oversight structure of the collaboration over the coming months. 11th July Adrian Bevan
Organisation The SuperB community includes: – Canada, France, Italy, Norway, Poland, Russia, Spain, UK, Ukraine, USA – Other countries are following the progress closely. Start international organisation using a Limited Liability Company framework (like Diamond). – Quick to set up. – Need to be involved now if we want to have a input into decision making. In the longer term the Project will come together as an ERIC: European Research Infrastructure Consortium. – Simplifies the legal framework for participating countries (use EU law, rather than regional specialities). – Tax exempt status. – Similar to the way CERN operates. UK has signed a non-disclosure agreement with INFN to collaborate on INMAPS CMOS sensor development. – The UK is already benefiting financially from our involvement in SuperB. 11th July Adrian Bevan
UK Involvement Very successful workshop at Oxford: – ASTEC, Cockcroft, Diamond, JAI, QMUL, RAL want to work on SuperB – Strong accelerator and detector teams have significant interest, but long term involvement will need financial support. – RAL and QMUL have established interests in the project. UK Machine Interest – Being refined and understood – a lot of very solid expertise started this year. Detector interest – Silicon detector: Aim to use deep-p well MAPS (INMAPS). Other points of interest – Physics coordination, Governance committee representation, Speaker's bureau representation – UK provides 50% of the computing resources for the experiment using spare capacity from existing infrastructure. Great starting points to build upon. Your group is welcome to join us! Synergy via MDI 11th July Adrian Bevan
1 st SuperB Collaboration Meeting 11th July Adrian Bevan
Summary Major new European initiative – Significant injection of new money into our field – A new lab for HEP: The Cabibbo Laboratory at Tor Vergata – A new light-source (not HEP, but important science) Core UK interest exists for machine and detector. Machine concepts have benefited other European facilities & will benefit the KEK machine. Detector technologies can benefit CERN/JParc experiments (e.g. INMAPS) – Also "real" impact potential for world leading pixel technology Broadest physics base of any flavour experiment proposed, or existing (see the literature): B u,d,s, D, τ... – More NP sensitive observables than anything else! – Great complement to existing and planned activities! 11th July Adrian Bevan
PHYSICS These slides present a summary of the physics programme for SuperB. Please also see the following reports: SuperB Progress Reports – Physics: arXiv: Valencia Workshop Report: Conceptual Design Report: arXiv: New document available: – The impact of SuperB on flavour physics (you can download it from this meeting page, will be on the archive soon) We're now starting on the Physics TDR, you're welcome to join us! 11th July Adrian Bevan
Data sample 11th July 2011Adrian Bevan22 ϒ (4S) region: –75ab−1 at the 4S –Also run above / below the 4S –~75 x10 9 B, D and τ pairs ψ(3770) region: – 500fb −1 at threshold – Also run at nearby resonances – ~2 x 10 9 D pairs
τLepton Flavor Violation (LFV) 11th July 2011Adrian Bevan23 ν mixing leads to a low level of charged LFV (B~10 −54 ). – Enhancements to observable levels are possible with new physics. e − beam polarisation helps suppress background. Two orders of magnitude improvement at SuperB over current limits. Hadron machines are not competitive with e + e − machines for these measurements.
The golden LFV modes: hb SUSY breaking scale assumed: 500GeV. c/o M. Blanke SUSY breaking scale assumed: 500GeV. Current experimental limits are at the edges of the model parameter space SuperB will be able to significantly constrain these models, and either find both channels, or constrain a large part of parameter space. 11th July Adrian Bevan
B u,d physics: Rare Decays 11th July 2011Adrian Bevan25 Example: – Rate modified by presence of H +
B u,d physics: Rare Decays 11th July 2011Adrian Bevan26 Example: – Need 75ab −1 to observe this mode. – With more than 75ab −1 we could measure polarisation. Constraint on (ε, η) with 75ab −1 e.g. see Altmannshofer, Buras, & Straub Sensitive to models with Z penguins and RH currents. (Theoretical uncertainties) (Experimental uncertainties)
Polarisation: a hint of NP? Some anomalies in f L measured in B decays to VV final states. It has been proposed that this could be the result of NP. – SuperB will provide ample data for theorists to resolve this issue 11th July 2011Adrian Bevan27 Understanding this pattern also feeds into the CKM angles programme as we need to disentangle CP odd and even states.
Can cleanly measure A s SL using 5S data SuperB can also study rare decays with many neutral particles, such as, which can be enhanced by SUSY. B s physics 11th July 2011Adrian Bevan28 Little Higgs (LTH) scenario
Charm 11th July 2011Adrian Bevan29 Collect data at threshold and at the 4S. – Benefit charm mixing and CPV measurements. – Also useful for measuring the Unitarity triangle angleγ (strong phase in D Kππ Dalitz plot). )
Charm Set of new modes ϒ (4S) and ψ(3770) – Null test for NP (paper discusses 36 CP eigenstates) Tiny angle, any large CPV would be new physics. Theoretical uncertainties will play a role probably ~1 degree. Need to measure D to π 0 π 0 to constrain penguin pollution (i.e. Need a Super Flavour Factory). – Can constrain CKM using weak constraint on β c,eff – Need a Super-Duper Flavour Factory to do a precision measurement of non-zero β c,eff, until then we look for NP in the up quark sector! See Bevan, Inguglia, Meadows: arXiv: sin2beta is 3.2σ away from the SM (Lunghi and Soni). Measure β c,eff to 2° at charm threshold. Measure to 1.3° at ϒ (4S). Evaluating penguin pollution for our next paper. New way to measure charm mixing. e.g. 500fb -1 at charm threshold 11th July Adrian Bevan
Precision Electroweak 11th July 2011Adrian Bevan31 sin 2 θ W can be measured with polarised e − beam –√s= ϒ (4S) is theoretically clean, c.f. b-fragmentation at Z pole SuperB Measure LR asymmetry in at the ϒ (4S) to same precision as LEP/SLC at the Z-pole. Can also perform crosscheck at ψ(3770). Plot adapted from QWeak proposal (JLAB E02-020) Need to evaluate run at threshold
Interplay 11th July 2011Adrian Bevan32 Combine measurements to elucidate structure of new physics. More information on the golden matrix can be found in arXiv: , arXiv: , and arXiv: ✓✓✓✓ ✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓ ✓✓✓✓ ✓ = SuperB can measure this
Precision CKM constraints 11th July 2011Adrian Bevan33 Unitarity Triangle Angles – σ(α) = 1−2° – σ(β) = 0.1° – σ(γ) = 1−2° CKM Matrix Elements – |V ub | Inclusive σ = 2% Exclusive σ = 3% – |V cb | Inclusive σ = 1% Exclusive σ = 1% – |V us | Can be measured precisely using τ decays – |V cd | and |V cs | can be measured at/near charm threshold. SuperB Measures the sides and angles of the Unitarity Triangle The "dream" scenario with 75ab -1
Golden Measurements: CKM 11th July 2011Adrian Bevan34 Comparison of relative benefits of SuperB (75ab -1 ) vs. existing measurements and LHCb (5fb -1 ) and the LHCb upgrade (50fb -1 ). LHCb can only use ρπ βtheory error B d βtheory error B s Need an e + e − environment to do a precision measurement using semi- leptonic B decays.
Benefit from polarised e − beam very precise with improved detector Statistically limited: Angular analysis with >75ab -1 Right handed currents SuperB measures many more modes systematic error is main challenge control systematic error with data SuperB measures e mode well, LHCb does μ Clean NP search Theoretically clean b fragmentation limits interpretation 35 Golden Measurements: General 11th July 2011Adrian Bevan
Physics programme in a nutshell 11th July 2011Adrian Bevan36 Versatile flavour physics experiment – Probe new physics observables in wide range of decays. Pattern of deviation from Standard Model can be used to identify structure of new physics. Clean experimental environment means clean signals in many modes. Polarised e − beam benefit for τ LFV searches. – Best capability for precision CKM constraints of any existing/proposed experiment. Measure angles and sides of the Unitarity triangle Measure other CKM matrix elements at threshold and using τ data. – Almost all measurements will be the world best results well into the ~2030s.
SuperB: Physics See white paper for details (on archive soon) The only experiment with access such a wide range of flavour observables. (theoretically cleaner) inclusive measurements also accessible. Operate between Charm threshold and ϒ (6S). Is a Super-CLEO/B/ -charm (and more) rolled into one! Precision CKM ALL angles of UT: |Vus|. |Vub|, |Vcb|, |Vts/Vtd| B & D CPT Vioaltion CP Violation LFV Precision EW: e.g.sin 2 θ W Precision EW: e.g.sin 2 θ W Spectroscopy Exotica (A 0, DM,...) All areas are related to new physics Complementary impact on LHC physics in many areas. Polarisatio n 11th July Adrian Bevan
SuperB: Physics See white paper for details (on archive soon) draft available from: Data from SuperB will be used to reconstruct the new physics Lagrangian New Physics (C/N/FB )MSSM Little Higgs (m)SUGRA SUSY Extra Dimensions Dark Mater Dark Forces Techni color LFV Quantum Gravity 2HDM 4 th generation 11th July Adrian Bevan
Some examples... 11th July 2011 BR 39Adrian Bevan
Quick Comparison 11th July 2011Adrian Bevan40 SuperB: Starts 2016 Integrated Lumi 75ab -1 by when? 2021 Approved by INFN Yes Approved by Gov. Yes Host Site Yes Machine Funded Yes Detector Funding need 25M€ Polarised electrons Yes Charm threshold Yes Belle II: Starts 2014 Integrated Lumi 50ab -1 by when? 2021 Approved by Japan Yes Host Site Yes Machine Funded Yes Detector Funding need XM€ Polarised electrons No Charm threshold No SuperB is funded and is going ahead. Results from SuperB will be more precise than any other experiment at that time. Only 2 of the 35 golden channels will be surpassed by LHCb upgrade. That will happen ~10 years after SuperB publishes (assuming LHCb upgrade gets funding soon). Some measurements will be unique to SuperB: Polarisation and charm threshold running are unique features that improve the physics programme depth and impact.