Probing dark particles indirectly at the CEPC

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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Main Authors: Qing-Hong Cao, Yang Li, Bin Yan, Ya Zhang, Zhen Zhang
Format: Article
Language:English
Published: Elsevier 2016-08-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321316301213
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spelling 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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