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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/77101

    Title: Search for Exotic Decay of A Higgs Boson into A Dark Photon and a Standard Model Photon in pp Collisions at √s = 13 TeV
    Authors: 汪本璿;Wang, Pen-Hsuan
    Contributors: 物理學系
    Keywords: 稀有希格斯衰變;緊湊渺子線圈;大強子對撞機緊湊渺子線圈;Dark photon;Exotic Higgs decay;Large Hadron Collider;Compact Moun Solenoid;Hidden sector
    Date: 2018-07-19
    Issue Date: 2018-08-31 13:57:12 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 有關暗光子的理論主要是出自於早期天文物理觀測的結果與 現有理論不符合,這些觀測結果指出新物理的存在。為了解 釋觀測結果,理論學家延伸自標準模型 U(1)群,在 Hidden Sector 中建立了一個新的假設性的 U(1)群。暗光子為此假設 性的 U(1)群的介子。歐洲核子 物理研究所的大強子對撞機為 目前世界上對撞能量最高且高亮度的質子質子對撞機,因此 擁有龐大的潛能來尋找 GeV 質量尺度的暗光子。本篇論文利 用質子-質子質心能量√s = 13 TeV 的對撞產生希格斯粒子, 暗光子則藉由希格斯粒子的稀有衰變來產生,並且通過暗光 子的渺子衰變頻道來尋找新的渺子-渺子對不變質量共振來尋 找暗光子,此研究使用 2016 年全年度 CMS 所蒐集的資料進
    行分析,總亮度為35.9fb-1。;The hypothesis of Dark Photon(ZD) is motivated by a number of astrophysi- cal observational anomalies which indicate the new physics beyond Standard Model(SM) is existing in our world. The Hidden Sector contains a hypothetical U (1)D gauge group is introduced by extension of the SM. The ZD is a theoretical particle which does not play a role as Dark Matter(DM) itself but play a role as gauge mediator of hypothetical hidden U(1)D gauge group. With the advent of the Large Hadron Collider(LHC), a powerful machine with unprecedented high central-of-mass energies and high luminosities gives the potential to probe the GeV scale ZD. The searches of ZD from exotic Higgs decays and decaying into a muon pair in pp collision with √s = 13 TeV is ongoing by looking for new dilepton invariant mass in sub-GeV scale. This analysis using full 2016 data recorded by CMS detector in integrated luminosity 35.9 fb−1.
    Appears in Collections:[物理研究所] 博碩士論文

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