Testing discrete symmetries with kaons: status and perspectives Antonio Di Domenico Dipartimento di Fisica, Sapienza Università di Roma and INFN sezione di Roma, Italy DISCRETE2012 - Third Symposium on Prospects in the Physics of Discrete Symmetries, 3–7 December, 2012 CFTP, IST - Lisboa, Portugal Kaon experiments at hadron machines Fixed-target high-energy hadron beams: KTeV and NA48 Physics with K in the 90s driven by ε’/ε experiments Their legacy: The first confirmation of the CKM picture of CPV A 12% measurement of ε’/ε (and much more: εK, CPT…) Innovative detection and analysis techniques Two state-of-the-art EM 100 physicists calorimeters 130 physicists 12 USA/Japan institutions 16 European institutions 1997-1999 Much more physics: 1998-2003 50 papers each and counting… M. Sozzi DISCRETE2010 ± ± ± ± RK=Γ(K → e ν)/Γ(K → µ ν) : theory 0.4% see S. Balev’s talk in the parallel session Rare KS decays at LHCb 1 fb-1 pp at sqrt(S)=7 TeV Yasmine Amhis LHCC open session Sep. 2012 Future kaon experiments at hadron machines The K→ πνν decays in the Standard Model (CPV) The K→ πνν decays beyond the Standard Model Rare K decays: the full picture Switch to quantitative test of the SM; Flavour sector probing extremely high energy scales: precision frontier complementary to LHC energy frontier Some (tiny!) BRs can be computed to very high (few percent) precision C. Smith K+→ π+νν decay at NA62 P. Cenci BEACH 2012 NA62: guiding principles K+→ π+νν decay at NA62 S. Balev’s talk yesterday in the parallel session Commissioning run 2012 Present status: - The technical run started during this summer has been successfully completed on 3rd December - Other technical runs foreseen during 2013 while completing the installation of detectors - Installation will continue in 2013 and 2014 - First physics run at the end of 2014 (after CERN machines shutdown) On schedule to get a 10% measurement by 2015-2016 (~ 3 SM events) H. Nanjio CKM 2012 J-PARC Hadron Hall 56m KL beam line (KL decay in flight) K1.1BR beam line (K+ decay at rest) 60m 30GeV Slow Extraction T1 target H. Nanjio CKM 2012 MB CV CsI (from KTeV) Present status - After the major Earthquake in Japan on 11 March 2011 (no damages to beam line and KOTO detector) JPARC started re-commissioning on Dec.2011 and resumed operations on Jan.2012. - Construction of the CsI calorimeter, the charged-particle veto counters (CV) in front of it, and the main-barrel photon veto counters (MB) which surrounds the decay volume in the vacuum vessel finished. - Front-end photon counters soon ready - Commissioning and engineering runs scheduled during beam times Dec’12-Jan’13 and Mar’13 - First physics run expected for May – June ’13 to break the Grossman-Nir bound. - After the long shutdown of the J-PARC accelerators from August 2013 to January 2014 expected to start a series of long physics runs. T. Komatsubara stopped K as in E787/949 E. Worcester BEACH2012 waiting for DOE approval of missions First data: end 2016 Evolution of the existing Fermilab accelerator complex to provide MW class beam power to a wide range of experimental programs TREK experiment Transverse µ+ polarization in K+→π0µ+υ decay Search for T reversal violation KEK E246 experiment (final 2006): J-PARC experiment Goal: 3HDM, LQ, SUSY w. RPB in 1 year E36/TREK on K1.1BR beam. The JPARC E36/TREK experiment aims to measure RK and reduce the error by x2. Physics run of E36 expected in 2014-15. Approval going on. Protvino project SPHINX+GAMS+ISTRA → OKA at Protvino: 65-70 GeV 1013 ppp at U-70 (38% DC) 12.5 GeV RF-separated K+ beam 5·106 Kpp (K/π ≈ 4) Commissioning beam and detector with runs started 2009 10-100x improvement on ISTRA Kaon program + spectroscopy e+e- collider Status of DAΦNE and KLOE/KLOE-2 KLOE-2 at upgraded DAΦNE DAΦNE upgraded in luminosity: - new scheme of the interaction region (crabbed waist scheme) at DAΦNE (proposal by P. Raimondi) - increase L by a factor x 3 demonstrated by a successful experimental test KLOE-2 experiment: - extend the KLOE physics program at DAΦNE upgraded in luminosity - Collect O(10) fb−1 of integrated luminosity in the next 2-3 years Physics program Detector upgrade: (see EPJC 68 (2010) 619-681) • γγ tagging system • Neutral kaon interferometry, CPT • inner tracker symmetry & QM tests • small angle and quad calorimeters • Kaon physics, CKM, LFV, rare K decays S • FEE maintenance and upgrade • η,η’ physics • Computing and networking update • Light scalars, γγ physics • etc.. (Trigger, software, …) • Hadron cross section at low energy, aµ • Dark forces: search for light U boson Improve precision on QM, CPT observables by approximately an order of magnitude Prospects for KLOE-2 at upgraded DAΦNE Param. Present best published KLOE-2 KLOE-2 KLOE-2 measurement L=5 fb-1 L=10 fb-1 L=20 fb-1 -3 -3 -3 -3 AS (1.5 ± 11) × 10 ± 2.7 × 10 ± 1.9 × 10 ± 1.4 × 10 -5 -5 -5 -5 AL ( 332.2 ± 5.8 ± 4.7 ) × 10 ± 8.9 × 10 ± 6.3 × 10 ± 4.5 × 10 Re(ε’/ε) (1.65 ± 0.26) × 10-3 (*) ± 0.72 × 10-3 ± 0.51 × 10-3 ± 0.36 × 10-3 Im(ε’/ε) (-1.2 ± 2.3) × 10-3 (*) ± 9.4 × 10-3 ± 6.7 × 10-3 ± 4.7 × 10-3 -3 -3 -3 -3 Re(δ)+Re(x-) Re(δ) = (0.25 ± 0.23) × 10 (*) ± 0.7 × 10 ± 0.5 × 10 ± 0.4 × 10 -3 Re(x-) = (-4.2 ± 1.7) × 10 (*) -5 -3 -3 -3 Im(δ)+Im(x+) Im(δ) = (-0.6 ± 1.9) × 10 (*) ± 9 × 10 ± 7 × 10 ± 5 × 10 -3 Im(x+) = (0.2 ± 2.2) × 10 (*) Δm (5.288 ± 0.043) × 109 s-1 ± 0.096 × 109 s-1 ± 0.068 × 109 s-1 ± 0.048 × 109 s-1 (*) = PDG 2010 fit Prospects for KLOE-2 at upgraded DAΦNE Para Present best published KLOE-2 (IT) KLOE-2 (IT) KLOE-2 (IT) m. measurement L=5 fb-1 L=10 fb-1 L=20 fb-1 -6 -6 -6 -6 ζ00 (0.1 ± 1.0) × 10 ± 0.26 × 10 ± 0.18 × 10 ± 0.13 × 10 -2 -2 -2 -2 ζSL (0.3 ± 1.9) × 10 ± 0.49 × 10 ± 0.35 × 10 ± 0.25 × 10 α (-0.5 ± 2.8) × 10-17 GeV ± 5.0 × 10-17 GeV ± 3.5 × 10-17 GeV ± 2.5 × 10-17 GeV β (2.5 ± 2.3) × 10-19 GeV ± 0.50 × 10-19 GeV ± 0.35 × 10-19 GeV ± 0.25 × 10-19 GeV γ (1.1 ± 2.5) × 10-21 GeV ± 0.75 × 10-21 GeV ± 0.53 × 10-21 GeV ± 0.38 × 10-21 GeV compl. pos. hyp. compl. pos. hyp. compl. pos. hyp. compl. pos. hyp. (0.7 ± 1.2) × 10-21 GeV ± 0.33 × 10-21 GeV ± 0.23 × 10-21 GeV ± 0.16 × 10-21 GeV -4 -4 -4 -4 Re(ω) (-1.6 ± 2.6) × 10 ± 0.70 × 10 ± 0.49 × 10 ± 0.35 × 10 -4 -4 -4 -4 Im(ω) (-1.7 ± 3.4) × 10 ± 0.86 × 10 ± 0.61 × 10 ± 0.43 × 10 -17 -17 -17 -17 Δa0 [(0.4 ± 1.8) × 10 GeV] ± 0.52 × 10 GeV ± 0.36 × 10 GeV ± 0.26 × 10 GeV -18 -18 -18 -18 ΔaZ [(2.4 ± 9.7) × 10 GeV] ± 2.2 × 10 GeV ± 1.5 × 10 GeV ± 1.1 × 10 GeV -21 -18 -18 -18 ΔaX,Y [<10 GeV] ± 1.3 × 10 GeV ± 0.95 × 10 GeV ± 0.67 × 10 GeV [….] = preliminary DAΦNE luminosity upgrade Crabbed waist scheme at DAΦNE NEW COLLISION SCHEME: Large Piwinski angle Crab-Waist compensation SXTs Old collision scheme -1 -1 max. expected at KLOE-2 : Lint ~ 20 pb /day x 200 dd/year = 4 fb /year DAΦNE luminosity upgrade Crabbed waist scheme at DAΦNE NEW COLLISION SCHEME: Large Piwinski angle Crab-Waist compensation SXTs Present commissioning phase New coll. scheme + KLOE det. Old collision scheme -1 -1 max. expected at KLOE-2 : Lint ~ 20 pb /day x 200 dd/year = 4 fb /year DAΦNE luminosity upgrade Crabbed waist scheme at DAΦNE Dec. 2012 NEW COLLISION SCHEME: Large Piwinski angle Crab-Waist compensation SXTs Present commissioning phase New coll. scheme + KLOE det. Old collision scheme -1 -1 max. expected at KLOE-2 : Lint ~ 20 pb /day x 200 dd/year = 4 fb /year From KLOE to KLOE-2: γγ taggers LET: Ee ~ 160-230 MeV Ø Inside KLOE detector Ø LYSO+SiPM Ø σE<10% for E>150 MeV HET: Ee > 400 MeV Ø 11 m from IP Ø Scintillator hodoscopes Ø σE ~ 2.5 MeV Ø σT ~ 200 ps KLOE γγ taggers are installed and ready for the KLOE-2 run From KLOE to KLOE-2: IP detectors Major detector upgrades ready in fall 2012, start install. end 2012: INNER TRACKER Ø 4 layers of cylindrical triple GEM Ø Better vertex reconstruction near IP Ø Larger acceptance for low pt tracks QCALT Ø W + scintillator tiles + SiPM/WLS Ø Low-beta quadrupoles: coverage for KL decays CCALT Ø LYSO + SiPM Ø Increase acceptance for γ’s from IP (21°→10°) From KLOE to KLOE-2: IP detectors Major detector upgrades ready in fall 2012, start install. end 2012: INNER TRACKER Ø 4 layers of cylindrical triple GEM Ø Better vertex reconstruction near IP Ø Larger acceptance for low pt tracks QCALT Ø W + scintillator tiles + SiPM/WLS Ø Low-beta quadrupoles: coverage for KL decays CCALT Ø LYSO + SiPM Ø Increase acceptance for γ’s from IP (21°→10°) Search for CP violation in KS decay 0 0 0 KS→ π π π : a pure CP violating decay ∂ i $ m11 m12 ' i $ #11 #12 ' Ψ = a(t) K 0 + b(t) K 0 i Ψ = H Ψ H = M " # = & ) " & ) ∂t 2 % m21 m22 ( 2% #21 #22 ( 1 1 KS = [ K1 +εS K2 ] KL = [ K2 +εL K1 ] € (1+ εS ) (1+ εL ) € ! εS = ε +δ εL = ε −δ 0 0 (δ: CPT viol.) 3π is a pure CP=-1 state; observation of KS → 3π is an € unambiguous sign of CP violation in mixing and/or in decay.