Authors: The LAGUNALBNO collaboration SK Agarwalla L Agostino M Aittola A Alekou B Andrieu D Angus F Antoniou A Ariga T Ariga R Asfandiyarov D Autiero P Ballett I Bandac D Banerjee G J Barker G Barr W Bartmann F Bay V Berardi I Bertram O Bésida AM BlebeaApostu A Blondel M Bogomilov E Borriello S Boyd I Brancus A Bravar M BuizzaAvanzini F Cafagna M Calin M Calviani M Campanelli C Cantini O Caretta G CataDanil MG Catanesi A Cervera S Chakraborty L Chaussard D Chesneanu F Chipesiu G Christodoulou J Coleman P Crivelli T Davenne J Dawson I De Bonis J De Jong Y Déclais P Del Amo Sanchez A Delbart C Densham F Di Lodovico S Di Luise D Duchesneau J Dumarchez I Efthymiopoulos A Eliseev S Emery K Enqvist T Enqvist L Epprecht A Ereditato AN Erykalov T Esanu AJ Finch MD Fitton D Franco V Galymov G Gavrilov A Gendotti C Giganti B Goddard JJ Gomez CM Gomoiu YA Gornushkin P Gorodetzky N Grant A Haesler MD Haigh T Hasegawa S Haug M Hierholzer J Hissa S Horikawa K Huitu J Ilic AN Ioannisian A Izmaylov A Jipa K Kainulainen T Kalliokoski Y Karadzhov J Kawada M Khabibullin A Khotjantsev E Kokko AN Kopylov LL Kormos A Korzenev S Kosyanenko I Kreslo D Kryn Y Kudenko VA Kudryavtsev J Kumpulainen P Kuusiniemi J Lagoda I Lazanu JM Levy RP Litchfield K Loo P Loveridge J Maalampi L Magaletti RM Margineanu J Marteau C MartinMari V Matveev K Mavrokoridis E Mazzucato N McCauley A Mercadante O Mineev A Mirizzi B Mitrica B Morgan M Murdoch S Murphy K Mursula S Narita DA Nesterenko K Nguyen K Nikolics E Noah Yu Novikov H O’Keeffe J Odell A Oprima V Palladino Y Papaphilippou S Pascoli T Patzak D Payne M Pectu E Pennacchio L Periale H Pessard C Pistillo B Popov P Przewlocki M Quinto E Radicioni Y Ramachers PN Ratoff M Ravonel M Rayner F Resnati O Ristea A Robert E Rondio A Rubbia K Rummukainen R Sacco A Saftoiu K Sakashita J Sarkamo F Sato N Saviano E Scantamburlo F Sergiampietri D Sgalaberna E Shaposhnikova M Slupecki M Sorel NJC Spooner A Stahl D Stanca R Steerenberg AR Sterian P Sterian B Still S Stoica T Strauss J Suhonen V Suvorov M Szeptycka R Terri LF Thompson G Toma A Tonazzo C Touramanis WH Trzaska R Tsenov K Tuominen A Vacheret M Valram G VankovaKirilova F Vanucci G Vasseur F Velotti P Velten T Viant H Vincke A Virtanen A Vorobyev D Wark A Weber M Weber C Wiebusch JR Wilson S Wu N Yershov J Zalipska M Zito
Publish Date: 2014/05/21
Volume: 2014, Issue: 5, Pages: 94-
Abstract
The next generation neutrino observatory proposed by the LBNO collaboration will address fundamental questions in particle and astroparticle physics The experiment consists of a far detector in its first stage a 20 kt LAr double phase TPC and a magnetised iron calorimeter situated at 2300 km from CERN and a near detector based on a highpressure argon gas TPC 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 δ CP and matterIn this paper we have reevaluated the physics potential of this setup for determining the mass hierarchy MH and discovering CPviolation CPV using a conventional neutrino beam from the CERN SPS with a power of 750 kW We use conservative assumptions on the knowledge of oscillation parameter priors and systematic uncertainties The impact of each systematic error and the precision of oscillation prior is shown We demonstrate that the first stage of LBNO can determine unambiguously the MH to 5σ CL over the whole phase space We show that the statistical treatment of the experiment is of very high importance resulting in the conclusion that LBNO has ~ 100 probability to determine the MH in at most 45 years of running Since the knowledge of MH is indispensable to extract δ CP from the data the first LBNO phase can convincingly give evidence for CPV on the 3σ CL using today’s knowledge on oscillation parameters and realistic assumptions on the systematic uncertaintiesThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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