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Short range future Medium range future B factories? Long range future ILC?

INFN National Laboratory LNF. Short range future Medium range future B factories? Long range future ILC?. INFN – LNF will be part of the international effort on future accelerators. K and h factory. Some basic concepts (and numbers).

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Short range future Medium range future B factories? Long range future ILC?

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  1. INFN National Laboratory LNF • Short range future • Medium range future B factories? • Long range future ILC? INFN – LNF will be part of the international effort on future accelerators

  2. K and h factory Some basic concepts (and numbers) A  meson decaying at rest produces pairs of neutral or charged kaons with branching ratios of ~34% and ~49%,respectively Daughter particles are monochromatic, Pch~ 125 MeV/c, Pneu ~ 110 MeV/c Parity conservation imposes the neutral state to be KSKL In resonant e+e collisions, particles fluxes are: 1.5 x 106K± pairs/pb1 1. x 106 KS KLpairs/pb1 100 fb-1 about 10 10 Kaon pairs

  3. FRASCATI Short Range Future; 3 years • DAFNE Luminosity projection • Starting from 1.5*10^32, 2fb-1/year • Ion Cleaning Electrodes shield-removal • Higher positron current • New interaction region • wigglers linearization • Transfer lines upgrade (continuos injection) • To be discussed: • Crab cavities • Waist modulation (RF quads) • Final luminosity 3 times higher? • Cutting edge accelerator technology

  4. FRASCATI Less short Range Future 2010 Change of machine layout, insertion of Superconducting cavities Superconducting wigglers Ramping Dipoles New vacuum chamber

  5. TDR in preparation: necessary to submit the project IR DAFNE 2 layout Wigglers rf

  6. PHYSICS case • K physics (from 2fb-1 to 50fb-1) • Nuclear physics • Nucleon form factors • Kaonic nuclei • Total cross section • g g physics • QM with kaon interferometry • Test of ChPT • Intense I.R Synchrotron Light Source Conceptual Design Report of the accelerator end 2006 Preliminary Letter of Intent for experiments are in preparation. We need to have an international collaboration. Experiment Letter of Intent  end 2006 We ask for the INFN decision By theend 2006 International collaboration on the machine design is highly desirable

  7. Feasibility study of hyper B-factory and synergy with ILC CTF3 at CERN going on Participation to the R&D for the ILC. Member of the GDE team Construction FEL injector systems It is important to have local laboratories working, in collaboration, on several projects It is wrong (to my opinion) to concentrate all our resources on a single project

  8. TOTAL CROSS SECTION R Energy Scan Radiative return

  9. R am a= (116592080 ± 50stat± 40sys) × 10-11 R Da(5)had Dahad(5) (Mz2)= 0.02800 (70) Eidelman, Jegerlehner’95 0.02761 (36) Burkhardt, Pietrzyk 2001 0.02755(23)Hagivara et al., 2004 0.02758 (35) Burkhardt, Pietrzyk 6-05

  10. Dafne2 Physics (non K) 1) Total cross section from pp threshold to 2.5 GeV: scan in √s e/o ritorno radiativo Hadronic correction to g-2 , running of a 2) Spectroscopy (vector mesons) 3) gg physics: Pseudoscalars ggp0 , h , h’ Scalars (s,…) ggpp , hp , KK 4) Time-like form factors: Barioni: n , p ,L , S Mesoni p , K 5) Test of CP + QM 6) Radiative f decays Mixing h / h’ h e h’ decays scalar meson : f0(980), a0(980), s 7) KN physics

  11. CPT violation: the “standard” path In the standard description of the neutral K system, a charge asymmetry in semileptonic KL and KS decays is predicted due to CP and (possibly) CPT violation L = 2Re(K )   CPT is violated if S≠ L S = 2Re(K ) +  The most recent measurement are: L = (3322 ± 58 ± 47) x 106 KTeV, 02 S = (1.5 ± 10 ± 3) x 103 KLOE, ~400 pb1 DAFNE-2 10-4 F. Bossi, CSN1, Frascati 14 Ottobre 2005

  12. CPT and decoherence It has been suggested that quantum gravity could give rise to modification of standard QM, observed in decoherence effects together with CPT violation This can be observed in deviation of the behaviour of entagled systems (like KSKL from  decays) from the one predicted by standard QM F. Bossi, CSN1, Frascati 14 Ottobre 2005

  13. CPT and decoherence: the EHNS model Ellis, Hagelin, Nanopoulos and (independently) Srednickiset up an evolution equation of the neutral K system containing three new CPT violating parameters ,, with dimensions of energy Naively, one expects ,,~ O(MK2 / MPlank) ~ 10-20 GeV PeskinandHuetworked out the expression of the usual double decay intensity of the KSKLpair from  decays in the EHNS framework There appear new bizarre terms in the distribution which allow to extract experimentally limits (or measurements) of these new parameters by proper fitting F. Bossi, CSN1, Frascati 14 Ottobre 2005

  14. Fixing the EHNS parameters The EHNS parameters have already been constrained by CPLEAR results  = ( 0.5 ± 2.8) x 1017 GeV  = ( 2.5 ± 2.3) x 1019 GeV  = ( 1.1 ± 2.5) x 1021 GeV KLOE can reach equal sensitivity on , with present data sample just with the ++ channel F. Bossi, CSN1, Frascati 14 Ottobre 2005

  15. Fixing the EHNS parameters With 20 fb1one can dramatically improve, especially onand In the plots below the horizontal line is CPLEAR, VDETmeansvert=¼ S (/S) (/S) (/S) • Present KLOE •KLOE + VDET fb1 fb1 fb1 F. Bossi, CSN1, Frascati 14 Ottobre 2005

  16. CPT and Bose statistics: the BMP model Bernabeu, Mavromatos and Pavassiliou argued that in presence of CPT violation induced by quantum gravity the concept of antiparticle has to be modified. In this case the KSKLstate from  decays does not strictly obeyBose statistics, thus modifying the final state wave function І i > = C {( ІKS(+)> ІKL()>  ІKL(+)>ІKS()>) +  ( ІKS(+)> ІKS()>  ІKL(+)>ІKL()>)} The complex parameter  quantifies the departure from Bose statistics, in a formalism in which the time evolution of the stateis still described by the equationsof standard QM Naively, ІІ~ O(MK2 / MPlank )1/2 ~ 10-3  104 F. Bossi, CSN1, Frascati 14 Ottobre 2005

  17. Measuring the  parameter The parameter can be measured by a fit to the decay time distribution of the KSKL pair to ++ Arg() = 0, ІІ = 1,2,3 x 103 • Present KLOE  • KLOE + VDET A. Di Domenico t (S units) A. Di Domenico fb1 F. Bossi, CSN1, Frascati 14 Ottobre 2005

  18. Misura sezione d’urto e+e- NN •  |G|2 (2) Angular distribution of the outgoing nucleon  |GE|/|GM| (3) Measurement of the outgoing nucleon polarization  F(q2) =fE - fM time-like form factors Accessible nucleons:

  19. KS  : a test for ChPT NA48/1 has measured BR(KS  ) = (2.78 ±0.06±0.04)x106 This result differs from predictions of ChPT at O(p4) by 30% A preliminary analysis shows that KLOE can reach a statistical accuracy of ~ 4%with the present data sample. A projection to 20 fb1 would give an accuracy better than 1% F. Bossi, CSN1, Frascati 14 Ottobre 2005

  20. Lepton Flavour Universality K en / K mn from 0.01 to 0.001 K mn / pmnwill giveVus/Vud to 0.001

  21. Transfer Lines Upgrade e- line e+ line kicker • Motivation: • e+ e- continous injection in collision

  22. RF system A possible candidate cavity 500 MHz SC cavity operating at KEKB R&D on SC cavities with SRFF experiment in DAFNE

  23. SC wigglers Technology developed for Light sources and colliders ELETTRA SC wiggler Built by BINP in operation since 2003

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