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A comparative study between ESSnuSB and T2HK in determining the leptonic CP phase
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, Roslagstullsbacken 21, SE-10691 Stockholm, Sweden..ORCID iD: 0000-0003-3540-6548
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics. The Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Center, Roslagstullsbacken 21, SE–106 91 Stockholm, Sweden.ORCID iD: 0000-0002-3525-8349
2020 (English)In: Modern Physics Letters A, ISSN 0217-7323, E-ISSN 1793-6632, Vol. 35, no 5, article id 2050058Article in journal (Refereed) Published
Abstract [en]

In this paper, we perform a comparative analysis between the future proposed longbaseline experiments ESSnuSB and T2HK in measuring the leptonic CP phase delta(CP). In particular, we study the effect of the neutrino mass ordering degeneracy and the leptonic mixing angle theta(23) octant degeneracy in the measurement of leptonic CP violation and precision for both experiments. Since the ESSnuSB (T2HK) experiment probes the second (first) oscillation maximum to study neutrino oscillations, the effect of these degeneracies are significantly different in both experiments. Our main conclusion is that for the ESSnuSB experiment, the information on the neutrino mass ordering does not play a major role in the determination of delta(CP), which is not the case for the T2HK experiment. However, the information on the true octant compromises the CP sensitivity of the ESSnuSB experiment as compared to T2HK if theta(23) lies in the lower octant. These conclusions are true for both the 540 km and 360 km baseline options for the ESSnuSB experiment. In addition, we investigate the effect of different running times in neutrino and antineutrino modes and the effect of theta(23) precision in measuring delta(CP).

Place, publisher, year, edition, pages
WORLD SCIENTIFIC PUBL CO PTE LTD , 2020. Vol. 35, no 5, article id 2050058
Keywords [en]
Neutrino oscillation, long-baseline experiments
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-271730DOI: 10.1142/S0217732320500583ISI: 000516717300011Scopus ID: 2-s2.0-85076697261OAI: oai:DiVA.org:kth-271730DiVA, id: diva2:1424188
Note

QC 20200416

Available from: 2020-04-16 Created: 2020-04-16 Last updated: 2020-04-16Bibliographically approved

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