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作者(中文):陳鈺衡
作者(外文):Chen, Yu Heng
論文名稱(中文):帶電宇宙射線實驗對具複頻道湮滅反應之銀河系暗物質給出的現象學限制
論文名稱(外文):Constraints on Galactic Dark Matter with multi-annihilation channels from charged cosmic-ray
指導教授(中文):張敬民
指導教授(外文):Cheung, Kingman
口試委員(中文):耿朝強
張維甫
徐百嫻
口試委員(外文):Geng, Chao-Qiang
Chang, We-Fu
Hsu, Pai-Hsien
學位類別:碩士
校院名稱:國立清華大學
系所名稱:物理系
學號:101022522
出版年(民國):104
畢業學年度:104
語文別:英文
論文頁數:19
中文關鍵詞:暗物質帶電宇宙射線天文粒子物理粒子物理現象學
外文關鍵詞:dark mattercharged cosmic-rayastroparticle physicsparticle physics phenomenology
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假設阿爾法磁譜儀觀測到的高能量正電子殘餘及未確認的反質子殘餘皆肇因於暗物質湮滅,此處我們從幾近非模型的角度出發,並為了提供一個更具一般性和不同可能性的分析而引進了暗物質探索中的複頻道迫近方法。從分析結果我們總結出質量在兆電子伏特附近並主要湮滅到正反濤子對的暗物質種類能比較好地解釋資料,並建議暗物質在銀河系中心附近的密度分佈可能高於一般預期。
Assuming that the positron excess and the unconfirmed anti-proton excess in AMS-02 data are both consequences of dark matter annihilations, here we introduce the multi-channel approach in dark matter searching to perform a general analysis on exploring possibilities to describe the data from an almost model-independent perspective. We then conclude that the data show a preference for DM species with τ − τ + dominant channel and Mχ∼1 TeV and suggest a dark matter density distribution with a rather large inner slope.
I. Introduction........................................................................................................................................1

II. Cosmic Positron and Anti-proton from Galactic Dark Matter & Astrophysical Background...1
Dark Matter Density Distribution in the Galaxy...........................................................................1
Dark Matter Annihilation.................................................................................................................2
Propagation of charged particles in the Galaxy...........................................................................4

III. Data Analysis.....................................................................................................................................8
Different Propagation Parameters.................................................................................................9
Different Halo Profile.....................................................................................................................13

IV. Result.................................................................................................................................................18

References.............................................................................................................................................18
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