Global analysis of the source and detector nonstandard interactions using the short baseline νe and ν¯e scattering data

Amir N. Khan
Phys. Rev. D 93, 093019 – Published 27 May 2016

Abstract

We present a global analysis of the semileptonic and purely leptonic nonuniversal and flavor-changing nonstandard neutrino interactions in all the known short-baseline neutrino—and antineutrino—electron scattering experiments. The nonstandard effects at the source and at the detector can be more transparent in these experiments because of the negligibly small ratio between the baselines and neutrino energies, which is not enough for the neutrinos to oscillate, and thus can be sensitive to the new physics at both ends. We use data from two electron-neutrino electron scattering experiments and six electron-antineutrino electron scattering experiments, combine them to find the best fits on the nonstandard parameters using the source-only, detector-only analyses, and then find the interplay between the two cases. The bounds obtained in some cases are stronger and new, in some cases comparable to the current ones, and in other cases weaker. For instance, the bound obtained from the interplay between the source and detector nonstandard physics on the nonstandard parameter ϵeeudL at the source is much stronger and is comparable with the indirect bound, but the bounds on the parameters ϵμeudL and ϵτeudL are weaker in this study in comparison with the indirect bounds. We also find a global fit on the standard weak mixing angle sin2θW=0.249±0.020 with 2% improvement in its precision in comparison with the previous studies.

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  • Received 23 March 2016

DOI:https://doi.org/10.1103/PhysRevD.93.093019

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Amir N. Khan*

  • School of Physics, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China

  • *khan8@mail.sysu.edu.cn, ntrnphysics@gmail.com

See Also

Sensitivity of medium-baseline reactor neutrino mass-hierarchy experiments to nonstandard interactions

Amir N. Khan, Douglas W. McKay, and F. Tahir
Phys. Rev. D 88, 113006 (2013)

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Vol. 93, Iss. 9 — 1 May 2016

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