Light gauge boson in rare K decay
We study the production of a light gauge boson in K−→π−X decay, where the associated new charge current is not conserved. It is found that the process can be generated by the tree-level W-boson annihilation and loop-induced s→dX. We find that it strongly depends on the SU(3) limit or the unique gaug...
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Elsevier
2016-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316306347 |
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doaj-adebf620cd2046079d0a43bf7ee79b372020-11-25T01:35:54ZengElsevierPhysics Letters B0370-26932016-12-01763304307Light gauge boson in rare K decayChuan-Hung Chen0Takaaki Nomura1Department of Physics, National Cheng-Kung University, Tainan 70101, TaiwanSchool of Physics, KIAS, Seoul 130-722, Republic of Korea; Corresponding author.We study the production of a light gauge boson in K−→π−X decay, where the associated new charge current is not conserved. It is found that the process can be generated by the tree-level W-boson annihilation and loop-induced s→dX. We find that it strongly depends on the SU(3) limit or the unique gauge coupling to the quarks, whether the decay amplitude of K−→π−X in the W-boson annihilation is suppressed by mX2ϵX⋅pK; however, no such suppression is found via the loop-induced s→dX. The constraints on the relevant couplings are studied.http://www.sciencedirect.com/science/article/pii/S0370269316306347 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Chuan-Hung Chen Takaaki Nomura |
| spellingShingle |
Chuan-Hung Chen Takaaki Nomura Light gauge boson in rare K decay Physics Letters B |
| author_facet |
Chuan-Hung Chen Takaaki Nomura |
| author_sort |
Chuan-Hung Chen |
| title |
Light gauge boson in rare K decay |
| title_short |
Light gauge boson in rare K decay |
| title_full |
Light gauge boson in rare K decay |
| title_fullStr |
Light gauge boson in rare K decay |
| title_full_unstemmed |
Light gauge boson in rare K decay |
| title_sort |
light gauge boson in rare k decay |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 |
| publishDate |
2016-12-01 |
| description |
We study the production of a light gauge boson in K−→π−X decay, where the associated new charge current is not conserved. It is found that the process can be generated by the tree-level W-boson annihilation and loop-induced s→dX. We find that it strongly depends on the SU(3) limit or the unique gauge coupling to the quarks, whether the decay amplitude of K−→π−X in the W-boson annihilation is suppressed by mX2ϵX⋅pK; however, no such suppression is found via the loop-induced s→dX. The constraints on the relevant couplings are studied. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269316306347 |
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AT chuanhungchen lightgaugebosoninrarekdecay AT takaakinomura lightgaugebosoninrarekdecay |
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