Study of scalar nonstandard interaction at the Protvino to super-ORCA experiment

• Published in: Physical Review D
• Main Authors: Singha, Dinesh Kumar, Majhi, Rudra, Panda, Lipsarani, Ghosh, Monojit, Mohanta, Rukmani
• Other Authors: Ministarstvo znanosti i obrazovanja, University of Hyderabad, Department of Science and Technology, Ministry of Science and Technology, India, Department of Atomic Energy, Government of India
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Physical Society (APS) 2024
• Subjects: Orca
• Online Access: http://dx.doi.org/10.1103/physrevd.109.095038; https://link.aps.org/article/10.1103/PhysRevD.109.095038; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.109.095038/fulltext

In this paper we have studied the phenomenon of nonstandard interaction mediated by a scalar field (SNSI) in the context of P2SO experiment and compared its sensitivity with DUNE. In particular, we have studied the capability of these two experiments to put bounds on the diagonal SNSI parameters, i.e., , , and and studied the impact of these parameters on the determination of neutrino mass ordering, octant of and violation (CPV). In our analysis we find that, the parameter has a nontrivial role if one wants estimate the bounds on and assuming SNSI does not exist in nature. Our results show that sensitivity of P2SO and DUNE to constraint and are similar whereas the sensitivity of DUNE is slightly better for . We find that the mass ordering and CPV sensitivities are mostly affected by compared to and η τ τ if one assumes SNSI exists in nature. On the other hand, octant sensitivity is mostly affected by <db:math xmlns:db="http://www.w3.org/1998/Math/MathML" display="inline"><db:msub><db:mi>η</db:mi><db:mrow><db:mi>μ</db:mi><db:mi>μ</db:mi></db:mrow></db:msub></db:math> and <fb:math xmlns:fb="http://www.w3.org/1998/Math/MathML" display="inline"><fb:msub><fb:mi>η</fb:mi><fb:mrow><fb:mi>τ</fb:mi><fb:mi>τ</fb:mi></fb:mrow></fb:msub></fb:math>. These sensitivities can be either higher or lower than the standard three flavor scenario depending on the relative sign of the SNSI parameters. Regarding the precision of atmospheric mixing parameters, we find that the precision of <hb:math xmlns:hb="http://www.w3.org/1998/Math/MathML" display="inline"><hb:msub><hb:mi>θ</hb:mi><hb:mn>23</hb:mn></hb:msub></hb:math> deteriorates significantly in the presence of <jb:math xmlns:jb="http://www.w3.org/1998/Math/MathML" ...