U-boson at BESIII
| dc.creator | Zhu, Shou-hua | |
| dc.date | 2006-12-29 | |
| dc.date | 2007-05-11 | |
| dc.date.accessioned | 2026-07-07T11:22:25Z | |
| dc.date.available | 2026-07-07T11:22:25Z | |
| dc.description | 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 $γ$-ray observation by SPI/INTEGRAL. In this paper the observability of such kind of U-boson at BESIII is investigated through the processes $e^+e^- \to U γ$ and $e^+e^- \to J/Ψ\to e^+e^- U$. We find that BESIII and high luminosity B-factories have the comparable capacity to detect such U-boson. If U-boson decays mainly into dark matter, i.e. invisibly, BESIII can measure the coupling among U-boson and electron-positron $g_{eR}$ (see text) down to $O(10^{-5})$, and cover large parameter space which can account for 511 keV $γ$-ray observation. On the other hand, provided that U decays mainly into electron-positron, BESIII can detect $g_{eR}$ down to $O(10^{-3})$, and it is hard to explore 511 keV $γ$-ray measurement allowed parameter space due to the irreducible QED backgrounds. | |
| dc.description | 3 refs added, minor text modification, PRD version | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0701001 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0701001 | |
| dc.identifier | Phys.Rev.D75:115004,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.115004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194563 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | U-boson at BESIII | |
| dc.type | text |