1. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams SUPERNOVA ATMOSPHERE SUN,REACTOR ACCELERATORS 10 50 1001000 (MeV) 500 -Energy Understanding neutrino-nucleus interaction Experimental data are very scarce ( deuteron and iron, carbon). Theoretical predictions are necessary but … Nuclear Physics

2. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams THE PROPOSAL C. Volpe, Journ. Phys. G. 30 (2004), hep-ph/0303222. To exploit the beta-beam concept to produce intense and pure low energy (10-100 MeV) neutrino beams. boost 6 He Low-energy Beta-beams P. Zucchelli, Phys. Lett. B 532 (2002) 166 for CP and CPT violation studies in sector

3. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams PS SPS EURISOLEURISOL Beta-beam baseline at CERN Low-energy Beta-beams Feasibility Study within EURISOL Design Study (2006-2009) Acceleration issues M. Benedikt and M. Lindroos, CERN Storage Ring J. Payet and A.Chancé, CEA Saclay, France - Size (D~700 m or D~900 m) - Space-charge effects - Duty cycle - Intensities close detector(s) Storage Ring Low-energy beta-beam Small Storage ring-detector: Small Storage ring-detector: J. Serreau, C. Volpe: Phys.Rev. C70 (2004) 055502 6 He & 18 Ne, (  =7-14) High-energy beta-beam (  ~100) I( 6 He)=10 13 ions/s I( 18 Ne)=1.8*10 11 ions/s I( 6 He)=2.7*10 12 ions/s I( 18 Ne)=0.44*10 11 ions/s

4. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Neutrino properties, like the magnetic moment G.C. McLaughlin, C. Volpe, Phys.Lett.B591 (2004) 229 PHYSICS POTENTIAL Neutrino-nucleus interaction studies C. Volpe: Eurisol proposal; R. Lazauskas, C.Volpe: in preparation; A. Bueno et al.: Phys. Rev. D74 (2006) 033010 Low-energy Beta-beams Aspects related with astrophysics: Supernova-neutrino spectra N. Jachowicz, G.C. McLaughlin: Phys.Rev.Lett. 96 (2006) 172301 Fundamental tests: Weinberg angle, CVC test A.B. Balantekin, J.H. de Jesus, C. Volpe: Phys.Lett. B634 (2006) 180 A.B. Balantekin et al.:, Phys.Rev. D73 (2006) 073011 ….

5. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Let first understand the simplest..  Targets(x10 -42 cm 2 ) at 40 MeV p105. d46.9 12 C10.1 16 O6.4 56 Fe119. 208 Pb2200

6. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams The most general form: CVC hypothesis: Negligible ~m e 2 ?

7. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams CVC tests Vector form factor: super-allowed beta decay J. C. Hardy and I. S. Towner, Phys. Rev. C 71 (2005) 055501 Tensor terms (weak-magnetism): Gamow-Teller transitions in mirror nuclei A=12 triad Y. K. Lee, L. W. Mo and C. S. Wu, Phys. Rev. Lett. 10 (1963) 253. C. S. Wu, Rev. Mod. Phys. 36 (1964) 618. T.D. Lee and C. S. Wu, Ann. Rev. Nucl. Sci. 15 (1965) 381.

8. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams D=678 m d=10 m Small Storage ring-detector: J. Serreau, C. Volpe: Phys.Rev. C70 (2004) 055502 e + e    h=15 m r I( 6 He)=2.7x10 12 ions/s

9. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams

10. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams

11. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Positron angular distribution

12. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Positron angular distribution

13. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Statistics for  t=1 year Stat. error only +2% syst. error Angular distrib. No of counts

14. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Statistics for  t=1 year Stat.err +2% syst. +5% syst. +10% syst.

15. A.B. Balantekin #, J.H. de Jesus #, R. Lazauskas*, C. Volpe* # #University of Wisconsin, Madison, USA *IPN, Orsay (France) A Conserved Vector Current test using low energy  beams Conclusion Low energy  -beams can be powerful tool for neutrino physics and in particular neutrino-nucleus interaction We show « how weak magnetism term » can be determined with 9% (or even better) accuracy in one year measurement at low energy  - beam facility A.B. Balantekin, J.H. De Jesus, R. Lazauskas, C. Volpe, Phys.Rev. D73 (2006) 073011 Acknowledgements: I acknowledge the financial support of the EC under the FP6 "Research Infrastructure Action- Structuring the European Research Area" EURISOL DS Project; Contract No. 515768 RIDS. The EC is not liable for any use that can be made of the information contained herein.