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Title: U boson at the BES III detector

Abstract

The O(MeV) spin-1 U boson has been proposed to mediate the interaction among electron-positron and O(MeV) dark matter, in order to account for the 511 keV {gamma}-ray observation by SPI/INTEGRAL. In this paper the observability of such a kind of U boson at BESIII is investigated through the processes e{sup +}e{sup -}{yields}U{gamma} and e{sup +}e{sup -}{yields}J/{psi}{yields}e{sup +}e{sup -}U. We find that BESIII and high luminosity B factories have a comparable capacity to detect such a U boson. If the U boson decays mainly into dark matter, i.e. invisibly, BESIII can measure the coupling between the U boson and an electron-positron pair g{sub eR} (see text) down to O(10{sup -5}), and cover large parameter space which can account for 511 keV {gamma}-ray observation. On the other hand, provided that U decays mainly into the electron-positron, BESIII can detect g{sub eR} down to O(10{sup -3}), and it is hard to explore the 511 keV {gamma}-ray measurement allowed parameter space due to the irreducible QED backgrounds.

Authors:
 [1]
  1. Institute of Theoretical Physics, School of Physics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
20929566
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.75.115004; (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; ANNIHILATION; BEAM LUMINOSITY; BOSONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; GAMMA RADIATION; KEV RANGE 100-1000; MATHEMATICAL SPACE; NONLUMINOUS MATTER; PARTICLE DECAY; POSITRONS; QUANTUM ELECTRODYNAMICS; SPIN

Citation Formats

Zhu Shouhua. U boson at the BES III detector. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.115004.
Zhu Shouhua. U boson at the BES III detector. United States. doi:10.1103/PHYSREVD.75.115004.
Zhu Shouhua. Fri . "U boson at the BES III detector". United States. doi:10.1103/PHYSREVD.75.115004.
@article{osti_20929566,
title = {U boson at the BES III detector},
author = {Zhu Shouhua},
abstractNote = {The O(MeV) spin-1 U boson has been proposed to mediate the interaction among electron-positron and O(MeV) dark matter, in order to account for the 511 keV {gamma}-ray observation by SPI/INTEGRAL. In this paper the observability of such a kind of U boson at BESIII is investigated through the processes e{sup +}e{sup -}{yields}U{gamma} and e{sup +}e{sup -}{yields}J/{psi}{yields}e{sup +}e{sup -}U. We find that BESIII and high luminosity B factories have a comparable capacity to detect such a U boson. If the U boson decays mainly into dark matter, i.e. invisibly, BESIII can measure the coupling between the U boson and an electron-positron pair g{sub eR} (see text) down to O(10{sup -5}), and cover large parameter space which can account for 511 keV {gamma}-ray observation. On the other hand, provided that U decays mainly into the electron-positron, BESIII can detect g{sub eR} down to O(10{sup -3}), and it is hard to explore the 511 keV {gamma}-ray measurement allowed parameter space due to the irreducible QED backgrounds.},
doi = {10.1103/PHYSREVD.75.115004},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}
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