Probing dark particles indirectly at the CEPC
When dark matter candidate and its parent particles are nearly degenerate, it would be difficult to probe them at the Large Hadron Collider directly. We propose to explore their quantum loop effects at the CEPC through the golden channel process e+e−→μ+μ−. We use a renormalizable toy model consistin...
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doaj-cc0cf635e5cd4d629ca85fbc7da48cc82020-11-24T21:42:13ZengElsevierNuclear Physics B0550-32131873-15622016-08-01909C19721710.1016/j.nuclphysb.2016.05.010Probing dark particles indirectly at the CEPCQing-Hong Cao0Yang Li1Bin Yan2Ya Zhang3Zhen Zhang4Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, ChinaDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, ChinaDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, ChinaDepartment of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, ChinaCenter for High Energy Physics, Peking University, Beijing 100871, ChinaWhen dark matter candidate and its parent particles are nearly degenerate, it would be difficult to probe them at the Large Hadron Collider directly. We propose to explore their quantum loop effects at the CEPC through the golden channel process e+e−→μ+μ−. We use a renormalizable toy model consisting of a new scalar and a fermion to describe new physics beyond the Standard Model. The new scalar and fermion are general multiplets of the SU(2)L×U(1)Y symmetry, and couple to the muon lepton through Yukawa interaction. We calculate their loop contributions to anomalous γμ+μ− and Zμ+μ− couplings which can be applied to many new physics models. The prospects of their effects at the CEPC are also examined assuming a 2‰ accuracy in the cross section measurement.http://www.sciencedirect.com/science/article/pii/S0550321316301213 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qing-Hong Cao Yang Li Bin Yan Ya Zhang Zhen Zhang |
spellingShingle |
Qing-Hong Cao Yang Li Bin Yan Ya Zhang Zhen Zhang Probing dark particles indirectly at the CEPC Nuclear Physics B |
author_facet |
Qing-Hong Cao Yang Li Bin Yan Ya Zhang Zhen Zhang |
author_sort |
Qing-Hong Cao |
title |
Probing dark particles indirectly at the CEPC |
title_short |
Probing dark particles indirectly at the CEPC |
title_full |
Probing dark particles indirectly at the CEPC |
title_fullStr |
Probing dark particles indirectly at the CEPC |
title_full_unstemmed |
Probing dark particles indirectly at the CEPC |
title_sort |
probing dark particles indirectly at the cepc |
publisher |
Elsevier |
series |
Nuclear Physics B |
issn |
0550-3213 1873-1562 |
publishDate |
2016-08-01 |
description |
When dark matter candidate and its parent particles are nearly degenerate, it would be difficult to probe them at the Large Hadron Collider directly. We propose to explore their quantum loop effects at the CEPC through the golden channel process e+e−→μ+μ−. We use a renormalizable toy model consisting of a new scalar and a fermion to describe new physics beyond the Standard Model. The new scalar and fermion are general multiplets of the SU(2)L×U(1)Y symmetry, and couple to the muon lepton through Yukawa interaction. We calculate their loop contributions to anomalous γμ+μ− and Zμ+μ− couplings which can be applied to many new physics models. The prospects of their effects at the CEPC are also examined assuming a 2‰ accuracy in the cross section measurement. |
url |
http://www.sciencedirect.com/science/article/pii/S0550321316301213 |
work_keys_str_mv |
AT qinghongcao probingdarkparticlesindirectlyatthecepc AT yangli probingdarkparticlesindirectlyatthecepc AT binyan probingdarkparticlesindirectlyatthecepc AT yazhang probingdarkparticlesindirectlyatthecepc AT zhenzhang probingdarkparticlesindirectlyatthecepc |
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