The Θ13 and δCP sensitivities of the SPL-Fréjus project revisited

Experimental Physics

Abstract.

An optimization of the CERN SPL beam line has been performed guided by the sensitivities to the Θ13 mixing angle and to the δCP Dirac CP violating phase. A UNO-like 440 ktons water Čerenkov detector located at 130 km from the target in a new foreseen Fréjus laboratory has been used as a generic detector. Concerning the δCP independent Θ13 sensitivity, a gain of about 20% may be reached using a 3.5 GeV proton beam with a 40 m long, 2 m radius decay tunnel compared to the up to now considered 2.2 GeV beam energy and 20 m long, 1 m radius decay tunnel. This may motivate new machine developments to upgrade the nominal SPL proton beam energy.

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References

  1. 1.
    E. Kearns [SuperKamiokande Collaboration], talk at the International Conference NEUTRINO 2004, 14-19 June 2004, http://neutrino2004.in2p3.fr/Google Scholar
  2. 2.
    T. Nakaya [K2K Collaboration], Nucl. Phys. B (Proceedings Supplement) 143, 96 (2005)CrossRefGoogle Scholar
  3. 3.
    T. Thomson [MINOS Collaboration], Nucl. Phys. B (Proceedings Supplement) 143, 249 (2005); P. Adamson et al. , NuMi-L-337 (unpublished)CrossRefGoogle Scholar
  4. 4.
    D. Autiero [OPERA Collaboration], Nucl. Phys. B (Proceedings Supplement) 143, 257 (2005); M. Guler et al. , Experiment proposal CERN/SPSC 2000-028 SPSC/P318 LNGS P25/2000 (unpublished)CrossRefADSGoogle Scholar
  5. 5.
    A. Bueno [ICARUS Collaboration], Nucl. Phys. B (Proceedings Supplement) 143, 262 (2005); P. Aprili et al. , CERN-SPSC-2002-027 (unpublished)CrossRefGoogle Scholar
  6. 6.
    G. Acquistapace et al. , CERN-98-02 (unpublished)Google Scholar
  7. 7.
    A. Athanassopoulos et al. , Phys. Rev. Lett. 81, 1774 (1998); A. Aguilar et al. , Phys. Rev. D 64, 112007 (2001)CrossRefGoogle Scholar
  8. 8.
    I. Stancu et al. , FERMILAB-TM-2207 (unpublished)Google Scholar
  9. 9.
    B. Pontecorvo Sov. Phys.-JETP 6, 429 (1957) [Zh. Eksp. Teor. Fiz. 33, 549 (1957)]; Z. Maki, M. Nakagawa and S. Sakata Prog. Theor. Phys. 28, 870 (1962); Pontecorvo B Sov. Phys.-JETP 26, 984 (1968) [Zh. Eksp. Teor. Fiz. 53, 1717 (1967)]; V.N. Gribov and B. Pontecorvo Phys. Lett. B 28, 493 (1969)Google Scholar
  10. 10.
    M. Apollonio et al. , Phys. Lett. B 466, 415 (1999); M. Apollonio et al. , Eur. J. Phys. C 27, 331 (2003)CrossRefGoogle Scholar
  11. 11.
    K. Anderson et al. , White paper report on using nuclear reactors to search for a value of \(\theta_{13}\) (2004), http://www.hep.anl.gov/minos/reactor13/reactor13.pdf (unpublished); F. Arbelier et al. , Letter of Intend for Double-CHOOZ, arXiv:hep-ex/0405032 (unpublished)Google Scholar
  12. 12.
    P. Zucchelli, Phys. Lett. B 532, 166 (2002)CrossRefADSGoogle Scholar
  13. 13.
    I. Ambats et al. , NO\(\nu\)A proposal FNAL P929, 2004 (unpublished)Google Scholar
  14. 14.
    Y. Itow, KEK report 2001-4, ICRR-report-477-2001-7, TRI-PP-01-05 (unpublished), see also arXiv:hep-ex/0106019Google Scholar
  15. 15.
    M.V. Diwan, Phys. Rev. D 68, 012002 (2003)CrossRefADSGoogle Scholar
  16. 16.
    A. Blondel et al. , CERN-2004-002 (unpublished)Google Scholar
  17. 17.
    A. Donini et al. , IFT-UAM/CSIC-04-30, 2004 (unpublished); see also arXiv:hep-ph/0406132Google Scholar
  18. 18.
    F. Dalnoki-Veress, the Double-CHOOZ project arXiv:hep-ex/0406070 (unpublished)Google Scholar
  19. 19.
    B. Autin et al. , CERN-2000-12 (unpublished)Google Scholar
  20. 20.
    The UNO whitepaper, Physics Potential and Feasibility of UNO, SBHEP01-3 (unpublished), see also http://ale.physics.sunysb.edu/uno/Google Scholar
  21. 21.
    L. Mosca, Talk at the Physics with a Multi MegaWatt Proton Source Workshop at CERN 25-27 May 2004, see http://physicsatmwatt.web.cern.ch/physicsatmwatt/Google Scholar
  22. 22.
    S. van der Meer, CERN-Report No 61-7, 1961 (unpublished)Google Scholar
  23. 23.
    J.E. Campagne and A. Cazes, CERN-NUFACT-Note-134, 2003 (unpublished), see http://slac.web.cern.ch/slap/ NuFact/NuFact/NFNotes.htmlGoogle Scholar
  24. 24.
    J.E. Campagne and A. Cazes, Poster session at the Physics with a Multi MegaWatt Proton Source Workshop at CERN 25-27 May 2004, see http://physicsatmwatt.web.cern.ch/physicsatmwatt/Google Scholar
  25. 25.
    J.J. Gómez Gadenas et al. , IFIC/01-31, Proceedings of Venice 2001, Neutrino telescopes, vol. 2, p463-481; see also arXiv:hep-ph/0105297; A. Blondel et al. , Nucl. Instrum. Methods A 503173 (2001); A. Blondel et al. , CERN-2004-002Google Scholar
  26. 26.
    M. Mezzetto, J. Phys. G: Nucl. Part. Phys. 29, 1781-1784 (2003), see also arXiv:hep-ex/0302005CrossRefADSGoogle Scholar
  27. 27.
    J.E. Campagne, CERN-NUFACT-Note-138, 2004 (unpublished), see http://slap.web.cern.ch/slap/NuFact/NuFact/ NFNotes.htmlGoogle Scholar
  28. 28.
    A. Fasso et al. , Proceedings of the MonteCarlo 2000 conference, Lisbon, October 26 2000, A. Kling et al. - eds., Springer-Verlag Berlin, p159-164 (2001); A. Fasso et al. , Proceedings of the MonteCarlo 2000 conference, Lisbon, October 26 2000, A. Kling et al. - eds., Springer-Verlag Berlin, p955-960 (2001)Google Scholar
  29. 29.
    R. Garoby, Talk at the Physics with a Multi MegaWatt Proton Source Workshop at CERN 25-27 May 2004, http://physicsatmwatt.web.cern.ch/physicsatmwatt/Google Scholar
  30. 30.
    C. Catanesi et al. , CERN-SPSC 2002/019 (unpublished)Google Scholar
  31. 31.
    D. Drakoulakos et al. , Fermilab P-938 (unpublished), see also arXiv:hep-ex/405002Google Scholar
  32. 32.
    N.V. Mokhov et al. , The MARS Code System User Guide, Version 13(95), Fermilab-FN-628 (1995); N.V. Mokhov et al. , MARS oed Develepments, LANL Report LA-UR-98-5716 (1998), nucl-th/9812038 v2 16 December 1998, http://www-ap.fnal.gov/MARS/Google Scholar
  33. 33.
    G. Battistoni and A. Ferrari, private communicationGoogle Scholar
  34. 34.
    Application Software group, Computing and Network Division et al. GEANT Description and Simulation Tool, CERN Geneva, SwitzerlandGoogle Scholar
  35. 35.
    S. Gilardoni, Talk at NuFact03 (2003), see http://www.cap.bnl.gov/nufact03/Google Scholar
  36. 36.
    A. Blondel et al. , CERN-NUFACT-Note-78, 2001 (unpublished), see http://slap.web.cern.ch/slap/NuFact/NuFact/ NFNotes.htmlGoogle Scholar
  37. 37.
    M. Mezzetto, CERN-NUFACT-Note-60, 2000 (unpublished), see http://slap.web.cern.ch/slap/NuFact/NuFact/ NFNotes.htmlGoogle Scholar
  38. 38.
    A. Donini, D. Meloni and S. Rigolin, J. High Energy Phys. 0406, 011 (2004), see also arXiv:hep-ph/0312072CrossRefADSGoogle Scholar
  39. 39.
    D. Casper, Nucl. Phys. Proc. Suppl. 112, 161-170 (2002), see also arXiv:hep-ph/0208030CrossRefADSGoogle Scholar
  40. 40.
    G. Gratta, talk at the International Conference NEUTRINO 2004, 14-19 June 2004, http://neutrino2004.in2p3.fr/Google Scholar
  41. 41.
    M. Komatsu, P Migliozzi and F. Terranova, J. Phys. G: Nucl. Part. Phys. 29, 443 (2003); see also arXiv:hep-ph/0210043CrossRefADSGoogle Scholar
  42. 42.
    T. Kobayashi, Nucl. Phys. B (Proceedings Supplement) 143, 303 (2005)CrossRefADSGoogle Scholar
  43. 43.
    M.V. Diwan et al. , Phys. Rev. D 68, 012002 (2003); see also Fig. 8 of arXiv:hep-ph/0303081CrossRefGoogle Scholar
  44. 44.
    M. Mezzetto, private communication: the corresponding \(\theta_{13}\) limit is \(3.4^\circ\) Google Scholar
  45. 45.
    A. Agostinelli et al. , Nucl. Instrum. Methods A 506, 250-503 (2003)CrossRefADSGoogle Scholar
  46. 46.
    A. Ereditato and A. Rubia, Talk at the Physics with a Multi MegaWatt Proton Source Workshop at CERN 25-27 May 2004, see http://physicsatmwatt.web.cern.ch/physicsatmwatt/Google Scholar
  47. 47.
    T.K. Gaisser, Cosmic Rays and Particle Physics (Cambridge University Press, 1990)Google Scholar
  48. 48.
    F. Combley and E. Picasso, Phys. Rept. 14, 1 (1974)CrossRefADSGoogle Scholar
  49. 49.
    K. Hagiwara et al. , Phys. Rev. D 66, 010001 (2002)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Université Paris-SudLaboratoire de l'Accélérateur LinéaireOrsay CedexFrance

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