Probing long-range forces in neutrino oscillations at the ESSnuSB experiment

(ESSnuSB collaboration) Aguilar, J.; Anastasopoulos, M.; Barčot, Doris; Baussan, E.; Bhattacharyya, A. K.; Bignami, A.; Blennow, M.; Bogomilov, M.; Bolling, B.; Bouquerel, E.; Bramati, F.; Branca, A.; Brunetti, G.; Bustinduy, I.; Carlile, C. J.; Cederkall, J.; Choi, T. W.; Choubey, S.; Christiansen, P.; Collins, M.; Cristaldo Morales, E.; Cupiał, P.; D’Ago, D.; Danared, H.; de André, J. P. A. M.; Dracos, M.; Efthymiopoulos, I.; Ekelöf, T.; Eshraqi, M.; Fanourakis, G.; Farricker, A.; Fasoula, E.; Fukuda, T.; Gazis, N.; Geralis, Th.; Ghosh, Manojit; Giarnetti, A.; Gokbulut, G.; Gupta, A.; Hagner, C.; Halić, Leon; Hooft, M.; Iversen, K. E.; Jachowicz, N.; Jakkapu, Mahesh; Jenssen, M.; Johansson, R.; Kasimi, E.; Kayis Topaksu, A.; Kildetoft, B.; Kliček, Budimir; Kordas, K.; Kovač, Bruno; Leisos, A.; Lindroos, M.; Longhin, A.; Maiano, C.; Majumdar, D.; Marangoni, S.; Marciano, S.; Marcos, J. G.; Marrelli, C.; Meloni, D.; Mezzetto, M.; Milas, N.; Muñoz, J. L.; Niewczas, K.; Oglakci, M.; Ohlsson, T.; Olvegård, M.; Pari, M.; Patrzalek, D.; Petkov, G.; Petridou, Ch.; Poussot, P.; Psallidas, A; Pupilli, F.; Saiang, D.; Sampsonidis, D.; Scanu, A.; Schwab, C.; Sordo, F.; Stavropoulos, G.; Stipčević, Mario; Tarkeshian, R.; Terranova, F.; Tolba, T.; Trachanas, E.; Tsenov, R.; Tsirigotis, A.; Tzamarias, S. E.; Vanderpoorten, M.; Vankova-Kirilova, G.; Vassilopoulos, N.; Vihonen, S.; Wurtz, J.; Zeter, V.; Zormpa, O. (2025) Probing long-range forces in neutrino oscillations at the ESSnuSB experiment. Journal of High Energy Physics, 2025 (07). ISSN 1029-8479

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Abstract

Neutrino oscillations constitute an excellent tool to probe physics beyond the Standard Model. In this paper, we investigate the potential of the ESSnuSB experiment to constrain the effects of flavour-dependent long-range forces (LRFs) in neutrino oscillations, which may arise due to the extension of the Standard Model gauge group by introducing new U(1) symmetries. Focusing on three specific U(1) symmetries — Le − Lμ, Le − Lτ, and Lμ − Lτ, we demonstrate that ESSnuSB offers a favourable environment to search for LRF effects. Our analyses reveal that ESSnuSB can set 90% confidence level bounds of Veμ < 2.99 × 10−14 eV, Veτ < 2.05 × 10−14 eV, and Vμτ < 1.81 × 10−14 eV, which are competitive to the upcoming Deep Underground Neutrino Experiment (DUNE). It is also observed that reducing the systematic uncertainties from 5% to 2% improves the ESSnuSB limits on Vαβ. Interestingly, we find limited correlations between LRF parameters and the less constrained lepton mixing parameters θ23 and δCP, preserving the robustness of ESSnuSB’s sensitivity to CP violation. Even under extreme LRF potentials (Vαβ ≫ 10−13 eV), the CP-violation sensitivity and δCP precision remain largely unaffected. These results establish ESSnuSB as a competitive experimental setup for probing LRF effects, complementing constraints from other neutrino sources and offering critical insights into the physics of long-range forces.

Item Type:	Article
Uncontrolled Keywords:	Neutrino Interactions; Non-Standard Neutrino Properties; Neutrino Mixing
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Center of Excellence for Advanced Materials and Sensing Devices
Projects:	Project title Project leader Project code Project type Studija upotrebe ESS postrojenja za precizno mjerenje udarnih presjeka neutrina za potrebe mjerenja leptonskog narušenja CP simetrije pomoću ESSnuSB i za izvođenje pretraživanja sterilnih neutrina i fizike astročestica Budimir Kliček 101094628 EK Potpora vrhunskim istraživanjima Centra izvrsnosti za napredne materijale i senzore- Mile Ivanda; Milko Jakšić; Mario Stipčević; Marko Kralj KK.01.1.1.01.0001 EK
Depositing User:	Lorena Palameta
Date Deposited:	28 Oct 2025 15:08
URI:	http://fulir.irb.hr/id/eprint/10103
DOI:	10.1007/JHEP07(2025)186

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