/ hep-ph arXiv:1412.0804

The LBNO long-baseline oscillation sensitivities with two conventional neutrino beams at different baselines

Agarwalla, S.K. (Bhubaneswar, Inst. Phys.) ; Agostino, L. (APC, Paris) ; Aittola, M. (Oulu U.) ; Alekou, A. (CERN) ; Andrieu, B. (Paris U., VI-VII) ; Antoniou, F. (CERN) ; Asfandiyarov, R. (Geneva U.) ; Autiero, D. (Lyon, IPN) ; Besida, O. (DAPNIA, Saclay) ; Balik, A. (Annecy, LAPP) ; Ballett, P. (Durham U.) ; Bandac, I. (DAPNIA, Saclay) ; Banerjee, D. (Zurich, ETH) ; Bartmann, W. (CERN) ; Bay, F. (Zurich, ETH) ; Biskup, B. (CERN) ; Blebea-Apostu, A.M. (Bucharest, IFIN-HH) ; Blondel, A. (Geneva U.) ; Bogomilov, M. (Sofiya U.) ; Bolognesi, S. (DAPNIA, Saclay) ; Borriello, E. (Hamburg, Tech. U.) ; Brancus, I. (Bucharest, IFIN-HH) ; Bravar, A. (Geneva U.) ; Buizza-Avanzini, M. (APC, Paris) ; Caiulo, D. (Lyon, IPN) ; Calin, M. (Bucharest U.) ; Calviani, M. (CERN) ; Campanelli, M. (University Coll. London) ; Cantini, C. (Zurich, ETH) ; Cata-Danil, G. (Bucharest, IFIN-HH) ; Chakraborty, S. (Hamburg, Tech. U.) ; Charitonidis, N. (CERN) ; Chaussard, L. (Lyon, IPN) ; Chesneanu, D. (Bucharest, IFIN-HH) ; Chipesiu, F. (Bucharest, IFIN-HH) ; Crivelli, P. (Zurich, ETH) ; Dawson, J. (APC, Paris) ; De Bonis, I. (Annecy, LAPP) ; Declais, Y. (Lyon, IPN) ; del Amo Sanchez, P. (Annecy, LAPP) ; Delbart, A. (DAPNIA, Saclay) ; Di Luise, S. (Zurich, ETH) ; Duchesneau, D. (Annecy, LAPP) ; Dumarchez, J. (Paris U., VI-VII) ; Efthymiopoulos, I. (CERN) ; Eliseev, A. (St. Petersburg, INP) ; Emery, S. (DAPNIA, Saclay) ; Enqvist, T. (Oulu U.) ; Enqvist, K. (Helsinki U.) ; Epprecht, L. (Zurich, ETH) ; Erykalov, A.N. (St. Petersburg, INP) ; Esanu, T. (Bucharest U.) ; Franco, D. (Lyon, IPN) ; Friend, M. (KEK, Tsukuba) ; Galymov, V. (Lyon, IPN) ; Gavrilov, G. (St. Petersburg, INP) ; Gendotti, A. (Zurich, ETH) ; Giganti, C. (Paris U., VI-VII) ; Gilardoni, S. (CERN) ; Goddard, B. (CERN) ; Gomoiu, C.M. (Bucharest U.) ; Gornushkin, Y.A. (Dubna, JINR) ; Gorodetzky, P. (APC, Paris) ; Haesler, A. (Geneva U.) ; Hasegawa, T. (KEK, Tsukuba) ; Horikawa, S. (Zurich, ETH) ; Huitu, K. (Helsinki U.) ; Izmaylov, A. (Moscow, INR) ; Jipa, A. (Bucharest U.) ; Kainulainen, K. (Jyvaskyla U.) ; Karadzhov, Y. (Geneva U.) ; Khabibullin, M. (Moscow, INR) ; Khotjantsev, A. (Moscow, INR) ; Kopylov, A.N. (Moscow, INR) ; Korzenev, A. (Geneva U.) ; Kosyanenko, S. (St. Petersburg, INP) ; Kryn, D. (APC, Paris) ; Kudenko, Y. (Moscow, INR) ; Kuusiniemi, P. (Oulu U.) ; Lazanu, I. (Bucharest U.) ; Lazaridis, C. (CERN) ; Levy, J.M. (Paris U., VI-VII) ; Loo, K. (Jyvaskyla U.) ; Maalampi, J. (Jyvaskyla U.) ; Margineanu, R.M. (Bucharest, IFIN-HH) ; Marteau, J. (Lyon, IPN) ; Martin-Mari, C. (Geneva U.) ; Matveev, V. (Moscow, INR) ; Mazzucato, E. (DAPNIA, Saclay) ; Mefodiev, A. (Moscow, INR) ; Mineev, O. (Moscow, INR) ; Mirizzi, A. (Hamburg, Tech. U.) ; Mitrica, B. (Bucharest, IFIN-HH) ; Murphy, S. (Zurich, ETH) ; Nakadaira, T. (KEK, Tsukuba) ; Narita, S. (Iwate U.) ; Nesterenko, D.A. (St. Petersburg, INP) ; Nguyen, K. (Zurich, ETH) ; Nikolics, K. (Zurich, ETH) ; Noah, E. (Geneva U.) ; Novikov, Yu. (St. Petersburg, INP) ; Oprima, A. (Bucharest, IFIN-HH) ; Osborne, J. (CERN) ; Ovsyannikova, T. (Moscow, INR) ; Papaphilippou, Y. (CERN) ; Pascoli, S. (Durham U.) ; Patzak, T. (APC, Paris) ; Pectu, M. (Bucharest, IFIN-HH) ; Pennacchio, E. (Lyon, IPN) ; Periale, L. (Zurich, ETH) ; Pessard, H. (Annecy, LAPP) ; Popov, B. (Paris U., VI-VII) ; Ravonel, M. (Geneva U.) ; Rayner, M. (Geneva U.) ; Resnati, F. (Zurich, ETH) ; Ristea, O. (Bucharest U.) ; Robert, A. (Paris U., VI-VII) ; Rubbia, A. (Zurich, ETH) ; Rummukainen, K. (Helsinki U.) ; Saftoiu, A. (Bucharest, IFIN-HH) ; Sakashita, K. (KEK, Tsukuba) ; Sanchez-Galan, F. (CERN) ; Sarkamo, J. (Oulu U.) ; Saviano, N. (Hamburg, Tech. U.) ; Scantamburlo, E. (Geneva U.) ; Sergiampietri, F. (Zurich, ETH) ; Sgalaberna, D. (Zurich, ETH) ; Shaposhnikova, E. (CERN) ; Slupecki, M. (Jyvaskyla U.) ; Smargianaki, D. (CERN) ; Stanca, D. (Bucharest, IFIN-HH) ; Steerenberg, R. (CERN) ; Sterian, A.R. (Bucharest, IFIN-HH) ; Sterian, P. (Bucharest, IFIN-HH) ; Stoica, S. (Bucharest, IFIN-HH) ; Strabel, C. (CERN) ; Suhonen, J. (Jyvaskyla U.) ; Suvorov, V. (St. Petersburg, INP) ; Toma, G. (Bucharest, IFIN-HH) ; Tonazzo, A. (APC, Paris) ; Trzaska, W.H. (Jyvaskyla U.) ; Tsenov, R. (Sofiya U.) ; Tuominen, K. (Helsinki U.) ; Valram, M. (Bucharest, IFIN-HH) ; Vankova-Kirilova, G. (Sofiya U.) ; Vannucci, F. (APC, Paris) ; Vasseur, G. (DAPNIA, Saclay) ; Velotti, F. (CERN) ; P. Velten\\note Now at Instituut voor Kern- en Stralingsfysica, KU. Leuven,3001 Leuven, Belgium. (CERN) ; Venturi, V. (CERN) ; Viant, T. (Zurich, ETH) ; Vihonen, S. (Jyvaskyla U.) ; Vincke, H. (CERN) ; Vorobyev, A. (St. Petersburg, INP) ; Weber, A. (Liverpool U.) ; Wu, S. (Zurich, ETH) ; Yershov, N. (Moscow, INR) ; Zambelli, L. (KEK, Tsukuba) ; Zito, M. (DAPNIA, Saclay)

Pages: 21

Abstract: The proposed Long Baseline Neutrino Observatory (LBNO) initially consists of $\\sim 20$ kton liquid double phase TPC complemented by a magnetised iron calorimeter, to be installed at the Pyh\\"asalmi mine, at a distance of 2300 km from CERN. The conventional neutrino beam is produced by 400 GeV protons accelerated at the SPS accelerator delivering 700 kW of power. The long baseline provides a unique opportunity to study neutrino flavour oscillations over their 1st and 2nd oscillation maxima exploring the $L/E$ behaviour, and distinguishing effects arising from $\\delta_{CP}$ and matter. In this paper we show how this comprehensive physics case can be further enhanced and complemented if a neutrino beam produced at the Protvino IHEP accelerator complex, at a distance of 1160 km, and with modest power of 450 kW is aimed towards the same far detectors. We show that the coupling of two independent sub-MW conventional neutrino and antineutrino beams at different baselines from CERN and Protvino will allow to measure CP violation in the leptonic sector at a confidence level of at least $3\\sigma$ for 50\\% of the true values of $\\delta_{CP}$ with a 20 kton detector. With a far detector of 70 kton, the combination allows a $3\\sigma$ sensitivity for 75\\% of the true values of $\\delta_{CP}$ after 10 years of running. Running two independent neutrino beams, each at a power below 1 MW, is more within today\'s state of the art than the long-term operation of a new single high-energy multi-MW facility, which has several technical challenges and will likely require a learning curve.

Web-Page: http://inspirehep.net/record/1332182/files/horntarg_geom_conf000701.png; http://inspirehep.net/record/1332182/files/complex.png; http://inspirehep.net/record/1332182/files/c2p_allflav_nubeam.png; http://inspirehep.net/record/1332182/files/p2p_allflav_nubeam.png; http://inspirehep.net/record/1332182/files/c2p_allflav_anubeam.png; http://inspirehep.net/record/1332182/files/p2p_allflav_anubeam.png; http://inspirehep.net/record/1332182/files/cern_NH_glb_root_pos.png; http://inspirehep.net/record/1332182/files/prot_NH_root_pos.png; http://inspirehep.net/record/1332182/files/DualBeam_Layout.png; http://inspirehep.net/record/1332182/files/24kton_cumulate.png; http://inspirehep.net/record/1332182/files/prot_NH_root_neg.png; http://inspirehep.net/record/1332182/files/70kton_cumulate.png; http://inspirehep.net/record/1332182/files/plot_70kton_NH.png; http://inspirehep.net/record/1332182/files/cern_NH_glb_root_neg.png; http://inspirehep.net/record/1332182/files/plot_24kton_NH.png; http://inspirehep.net/record/1332182/files/PR2PY_nubar.png; http://inspirehep.net/record/1332182/files/plot_24kton_comp.png; http://inspirehep.net/record/1332182/files/CN2PY_nubar.png; http://inspirehep.net/record/1332182/files/elike_p2p_ncpi0_phf_share5050.png; http://inspirehep.net/record/1332182/files/PR2PY_nu.png; http://inspirehep.net/record/1332182/files/elike_p2p_tau_phf_share5050.png; http://inspirehep.net/record/1332182/files/PR2PY_band.png; http://inspirehep.net/record/1332182/files/elike_p2p_sig_phf_share5050.png; http://inspirehep.net/record/1332182/files/elike_p2p_phf_share5050.png; http://inspirehep.net/record/1332182/files/CN2PY_band.png; http://inspirehep.net/record/1332182/files/CN2PY_nu.png; http://inspirehep.net/record/1332182/files/elike_p2p_misidmu_phf_share5050.png; http://inspirehep.net/record/1332182/files/elike_p2p_beam_phf_share5050.png; http://inspirehep.net/record/1332182/files/arXiv:1412.0804.pdf

Note: *Temporary entry*; 21 pages, 12 figures

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