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Title: Constraints on light dark matter and U bosons, from {psi}, {upsilon}, K{sup +}, {pi} deg., {eta} and {eta}{sup '} decays

Abstract

Following searches for photinos and very light gravitinos in invisible decays of {psi} and {upsilon}, we discuss new limits on Light Dark Matter and U bosons, from {psi} and {upsilon} decays, as well as rare decays of K{sup +} and invisible decays of {pi} deg., {eta} and {eta}{sup '}.... The new limits involving the vector couplings of the U to quarks turn out, not surprisingly, to be much less restrictive than existing ones on axial couplings, from an axionlike behavior of a light U boson, tested in {psi}{yields}{gamma}U, {upsilon}{yields}{gamma}U and K{sup +}{yields}{pi}{sup +}U decays (or as compared to the limit from parity-violation in atomic physics, in the presence of an axial coupling to the electron). Altogether the hypothesis of light U bosons, and light dark matter particles, remains compatible with particle physics constraints, while allowing for the appropriate annihilation cross sections required, both at freeze-out (for the relic abundance) and nowadays (if e{sup +} from LDM annihilations are at the origin of the 511 keV line from the galactic bulge)

Authors:
 [1]
  1. Laboratoire de Physique Theorique de l'ENS, UMR 8549 CNRS, 24 rue Lhomond, 75231 Paris Cedex 05 (France)
Publication Date:
OSTI Identifier:
20871122
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 74; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.74.054034; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; BOTTOMONIUM; COUPLING; CROSS SECTIONS; ELECTRONS; ETA MESONS; ETA PRIME-958 MESONS; KAONS PLUS; KEV RANGE; NONLUMINOUS MATTER; PARITY; PARTICLE DECAY; PHOTONS; POSITRONS; QUARKS; VECTOR MESONS

Citation Formats

Fayet, Pierre. Constraints on light dark matter and U bosons, from {psi}, {upsilon}, K{sup +}, {pi} deg., {eta} and {eta}{sup '} decays. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.74.054034.
Fayet, Pierre. Constraints on light dark matter and U bosons, from {psi}, {upsilon}, K{sup +}, {pi} deg., {eta} and {eta}{sup '} decays. United States. https://doi.org/10.1103/PHYSREVD.74.054034
Fayet, Pierre. Fri . "Constraints on light dark matter and U bosons, from {psi}, {upsilon}, K{sup +}, {pi} deg., {eta} and {eta}{sup '} decays". United States. https://doi.org/10.1103/PHYSREVD.74.054034.
@article{osti_20871122,
title = {Constraints on light dark matter and U bosons, from {psi}, {upsilon}, K{sup +}, {pi} deg., {eta} and {eta}{sup '} decays},
author = {Fayet, Pierre},
abstractNote = {Following searches for photinos and very light gravitinos in invisible decays of {psi} and {upsilon}, we discuss new limits on Light Dark Matter and U bosons, from {psi} and {upsilon} decays, as well as rare decays of K{sup +} and invisible decays of {pi} deg., {eta} and {eta}{sup '}.... The new limits involving the vector couplings of the U to quarks turn out, not surprisingly, to be much less restrictive than existing ones on axial couplings, from an axionlike behavior of a light U boson, tested in {psi}{yields}{gamma}U, {upsilon}{yields}{gamma}U and K{sup +}{yields}{pi}{sup +}U decays (or as compared to the limit from parity-violation in atomic physics, in the presence of an axial coupling to the electron). Altogether the hypothesis of light U bosons, and light dark matter particles, remains compatible with particle physics constraints, while allowing for the appropriate annihilation cross sections required, both at freeze-out (for the relic abundance) and nowadays (if e{sup +} from LDM annihilations are at the origin of the 511 keV line from the galactic bulge)},
doi = {10.1103/PHYSREVD.74.054034},
url = {https://www.osti.gov/biblio/20871122}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 5,
volume = 74,
place = {United States},
year = {2006},
month = {9}
}