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Title: New limit on millicharged particles from reactor neutrino experiments and the PVLAS anomaly

Abstract

It has been recently suggested that the vacuum magnetic dichroism observed by the PVLAS experiment could be explained by pair production of a new light, m{sub {epsilon}}{approx_equal}0.1 eV, millicharged, q{sub {epsilon}}{approx_equal}3x10{sup -6}e, fermions ({epsilon}). In addition, it has been pointed out that millicharged particles with q{sub {epsilon}} > or approx. 10{sup -9}e appear naturally in models based on the string theory. We show that low energy reactor neutrino experiments provide a sensitive probe of millicharged particles. Considering, as an example, recent results of the TEXONO experiment searching for the neutrino magnetic moment, a new upper bound q{sub {epsilon}} < or approx. 10{sup -5}e for the mass region m{sub {epsilon}}<1 keV is derived. These results enhance motivations for a more sensitive search for such particles in near future experiments. Furthermore, a direct experimental limit on the electric charge of the electron antineutrino q{sub {nu}{sub e}}<3.7x10{sup -12}e is obtained.

Authors:
 [1];  [2];  [3];  [4]
  1. Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, (Russian Federation)
  2. (Switzerland)
  3. Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312 (Russian Federation)
  4. Institut fuer Teilchenphysik, ETHZ, CH-8093 Zurich (Switzerland)
Publication Date:
OSTI Identifier:
21020308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.075014; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRIC CHARGES; ELECTRON ANTINEUTRINOS; EV RANGE; KEV RANGE; MAGNETIC MOMENTS; PAIR PRODUCTION; PARTICLE IDENTIFICATION; REST MASS; STRING MODELS

Citation Formats

Gninenko, S. N., Institut fuer Teilchenphysik, ETHZ, CH-8093 Zurich, Krasnikov, N. V., and Rubbia, A. New limit on millicharged particles from reactor neutrino experiments and the PVLAS anomaly. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.075014.
Gninenko, S. N., Institut fuer Teilchenphysik, ETHZ, CH-8093 Zurich, Krasnikov, N. V., & Rubbia, A. New limit on millicharged particles from reactor neutrino experiments and the PVLAS anomaly. United States. doi:10.1103/PHYSREVD.75.075014.
Gninenko, S. N., Institut fuer Teilchenphysik, ETHZ, CH-8093 Zurich, Krasnikov, N. V., and Rubbia, A. Sun . "New limit on millicharged particles from reactor neutrino experiments and the PVLAS anomaly". United States. doi:10.1103/PHYSREVD.75.075014.
@article{osti_21020308,
title = {New limit on millicharged particles from reactor neutrino experiments and the PVLAS anomaly},
author = {Gninenko, S. N. and Institut fuer Teilchenphysik, ETHZ, CH-8093 Zurich and Krasnikov, N. V. and Rubbia, A.},
abstractNote = {It has been recently suggested that the vacuum magnetic dichroism observed by the PVLAS experiment could be explained by pair production of a new light, m{sub {epsilon}}{approx_equal}0.1 eV, millicharged, q{sub {epsilon}}{approx_equal}3x10{sup -6}e, fermions ({epsilon}). In addition, it has been pointed out that millicharged particles with q{sub {epsilon}} > or approx. 10{sup -9}e appear naturally in models based on the string theory. We show that low energy reactor neutrino experiments provide a sensitive probe of millicharged particles. Considering, as an example, recent results of the TEXONO experiment searching for the neutrino magnetic moment, a new upper bound q{sub {epsilon}} < or approx. 10{sup -5}e for the mass region m{sub {epsilon}}<1 keV is derived. These results enhance motivations for a more sensitive search for such particles in near future experiments. Furthermore, a direct experimental limit on the electric charge of the electron antineutrino q{sub {nu}{sub e}}<3.7x10{sup -12}e is obtained.},
doi = {10.1103/PHYSREVD.75.075014},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}