Volume 104, Number 1, October 2013
|Number of page(s)||6|
|Section||The Physics of Elementary Particles and Fields|
|Published online||15 November 2013|
K+ meson yields by proton beams on low-Z targets and production of U-boson in kaon rare decays
1 Institute of Modern Physics, Chinese Academy of Sciences - Lanzhou 730000, China
2 University of Chinese Academy of Sciences - Beijing 100049, China
3 Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS and Lanzhou University Lanzhou 730000, China
Received: 29 June 2013
Accepted: 7 October 2013
The production of -meson in proton–low-Z targets (12C, 7Li) reactions for beam energies is analyzed on the basis of a relativistic transport (ART) model means. The double differential cross-section and the ratio of production with various targets for different emission angles are calculated. Moreover, the light neutral vector boson U from kaon decays is investigated and the momentum spectra of the U-boson with mass are obtained. It is found that the shapes of U-boson's momentum spectra distributions are practically independent of its mass distributions but sensitive to the emission angle. Furthermore, the decay channel is considered and the energy spectra of positron from U-boson decays are first presented, which will be conduced to search for the U-boson in experiments and understand the light dark-matter particles.
PACS: 13.60.Le – Meson production / 13.20.Eb – Decays of / 14.70.Pw – Other gauge bosons
© EPLA, 2013
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