博碩士論文 962202037 詳細資訊




以作者查詢圖書館館藏 以作者查詢臺灣博碩士 以作者查詢全國書目 勘誤回報 、線上人數:61 、訪客IP:3.209.80.87
姓名 呂昀儒(Yun-Ju Lu)  查詢紙本館藏   畢業系所 物理學系
論文名稱 7 TeV 和2.76 TeV 質子對撞下,光子散射截面積的測量
(Measurement of the isolated photon crosssection in sqrt(s) = 7 TeV and 2.76 TeVproton proton collisions)
相關論文
★ Search for Pair Production of t*-> t + photon : Estimation of Photon Purity and Study of the Top and W Mass Resolution★ 以大型強子對撞機裡的緊湊渺子線圈偵測器尋找重夸克在半輕子頻道衰變成頂夸克和光子
★ Search for Z′→Zh→llbb in pp Collisions at √s =8 TeV Using the CMS Detector at the LHC★ Search for heavy resonances decaying into a Z boson and a Higgs boson in the 2l2b final state in pp collisions at √s = 13 TeV
★ 從質子質子對撞在質量中心能量 13 兆電子 伏特利用緊湊渺子偵測器尋找重粒子衰變 到一對希格斯粒子於四個底夸克最終態★ Study of the b-tagging Scale Factor using the tt ̅ Events from pp collisions at √s =13 TeV with the CMS Detector
★ 在大型強子對撞機的緊湊渺子線圈偵測器,使用13兆電子伏特的質子-質子對撞尋找會衰變到一對希格斯玻色子且最終狀態為四個底夸克的重共振態★ 在緊湊渺子線的質心對撞能量為 13 兆電子伏特的數據裡, 用字母法輔以突起搜尋之方法來尋找類 Z 玻色子衰變為 Z 玻色子及希格斯粒子在衰變為輕子與底垮克
檔案 [Endnote RIS 格式]    [Bibtex 格式]    [相關文章]   [文章引用]   [完整記錄]   [館藏目錄]   [檢視]  [下載]
  1. 本電子論文使用權限為同意立即開放。
  2. 已達開放權限電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。
  3. 請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。

摘要(中) 這篇論文包含了在7 TeV 和2.76 TeV 質子對撞下,光子散射截面積的測量。我
們使用了CMS 在7 TeV 和2.76 TeV 取得的35.9/pb 、232.1 /nb 的數據來做測
量。這兩個測量的結果也分別被使用來與7 TeV 和2.76 TeV 下,第二階量子色動
力學計算做比較,在這個比較裡,我們觀測到了理論計算與實驗一致的結果。 除
了和第二階量子色動力學計算做比較之外,論文裡也提供了2.76 TeV 下,鉛離子
對撞產生的光子散射截面積的測量。這個測量可以幫助我們獲得在經過計算加權
之後的鉛離子對撞產生的光子散射截面積與質子對撞產生的光子散射截面積的
比,有助於獲得質子對撞與鉛離子對撞初始狀態的資訊。另外關於測量方法方面,
在這兩個測量當中,我們都使用了量能器裡的單獨的能量累積程度來作為分辨信
號光子和背景粒子的係數,進而達到去除背景的目的。
摘要(英) Two measurements of the inclusive cross section for isolated prompt photon production in proton-proton
collisions at center-of-mass energy of 7 TeV and 2.76 TeV are present. For proton-proton collisions at
center-of-mass energy of 7 TeV/2.76 TeV, 35.9/pb / 232.1/nb of data recorded by CMS detector is used.
We first present the comparison between the next-to-leading-order perturbative QCD calculations and
measurements which we see consistency results between theory and data. Second, in order to get the ratio
of PbPb to pp isolated photon ET-di fferential yields scaled by the number of incoherent nucleon-nucleon
collisions, the result of inclusive cross section measurement for isolated prompt photon production in
2.76 TeV PbPb collisions is also shown. For both measurements at 7 TeV and at 2.76 TeV, photon
candidates are identi fied based on isolated energy deposits in the electromagnetic calorimeter.
關鍵字(中) ★ 對撞
★ 強子對撞
★ 量子
★ 光子
★ 質子
★ 緊湊渺子線圈
關鍵字(英) ★ collider
★ Compact Muon Solenoid
★ LHC
★ photon
★ Quantum Chromodynamics
★ proton
★ CMS
★ photon
論文目次 1. Introduction p.1
2. CMS detector in LHC p.6
3. Data and simulation samples p.17
4. Photon reconstruction and identification p.21
5. Isolated photon production cross section p.32
6. Conclusion p.58
參考文獻 [1] Electromagnetic calorimeter commissioning and performance with 7 tev data. CMS Note, EGM-10-002, 2010.
[2] Isolated photon reconstruction and identi cation at sqrts=7 tev. CMS Note, EGM-10-006, 2010.
[3] Measurement of the di erential isolated prompt photon production cross section in pp collisions at
sqrt(s) =7 tev. Phys.Rev., QCD-10-037, 2010.
[4] Photon reconstruction and identi cation at sqrt(s) = 7 tev. CMS Note, 2010.
[5] Electromagnetic physics objects commissioning with rst LHC data. CMS Note, 2010.
[6] G. Aad et al. Measurement of the inclusive isolated prompt photon cross section in pp collisions at
ps = 7 TeV with the ATLAS detector. Phys. Rev. D, 83:052005, 2011.
[7] Patrick Aurenche, Michel Fontannaz, Jean-Philippe Guillet, Eric Pilon, and Monique Werlen. A
New critical study of photon production in hadronic collisions. Phys.Rev., D73:094007, 2006.
[8] L. Bourhis, M. Fontannaz, and J.P. Guillet. Quarks and gluon fragmentation functions into photons.
Eur.Phys.J., C2:529{537, 1998.
[9] S. Catani, M. Fontannaz, J.P. Guillet, and E. Pilon. Cross-section of isolated prompt photons in
hadron hadron collisions. JHEP, 0205:028, 2002.
[10] Serguei Chatrchyan et al. Measurement of the Di erential Cross Section for Isolated Prompt Photon
Production in pp Collisions at 7 TeV. Phys.Rev., D84:052011, 2011.
[11] Serguei Chatrchyan et al. Observation and studies of jet quenching in PbPb collisions at nucleon-
nucleon center-of-mass energy = 2.76 TeV. Phys.Rev., C84:024906, 2011.
[12] Serguei Chatrchyan et al. Measurement of isolated photon production in pp and PbPb collisions at
sqrt(sNN) = 2.76 TeV. Phys.Lett., B710:256{277, 2012.
[13] K.J. Eskola, H. Paukkunen, and C.A. Salgado. EPS09: A New Generation of NLO and LO Nuclear
Parton Distribution Functions. JHEP, 0904:065, 2009.
[14] Hung-Liang Lai, Marco Guzzi, Joey Huston, Zhao Li, Pavel M. Nadolsky, et al. New parton
distributions for collider physics. Phys.Rev., D82:074024, 2010.
[15] Michael L. Miller, Klaus Reygers, Stephen J. Sanders, and Peter Steinberg. Glauber modeling in
high energy nuclear collisions. Ann.Rev.Nucl.Part.Sci., 57:205{243, 2007.
[16] K. Nakamura et al. Review of particle physics. J.Phys.G, G37:075021, 2010.
指導教授 余欣珊(Shin-Shan Yu) 審核日期 2012-8-15
推文 facebook   plurk   twitter   funp   google   live   udn   HD   myshare   reddit   netvibes   friend   youpush   delicious   baidu   
網路書籤 Google bookmarks   del.icio.us   hemidemi   myshare   

若有論文相關問題,請聯絡國立中央大學圖書館推廣服務組 TEL:(03)422-7151轉57407,或E-mail聯絡  - 隱私權政策聲明