於緊湊緲子螺線圈質心能量十三兆電子伏特透過輕子與噴流最終態尋找頂夸克對的共軛宇稱破壞

建立在質心能量八兆電子伏特的分析結果之上，本論文試圖於緊湊緲子螺線圈實驗中，質心能量十三兆電子伏特下，測量頂夸克對的共軛宇稱破壞。從2016年質子對撞累積光度35.9逆飛靶恩的數據中，我們可以藉由逆時間運算子擁有特徵值為-1的觀察量根據一個輕子及至少四個噴流的最終態來計算頂夸克對中的不對稱性。在這分析中，不確定性資訊，背景的干涉程度，以及偵測器的影響都已經被考慮並準備妥當。除此之外，其他可能的不對稱新物理來源以及逆時間運算子擁有特徵值為1的觀察量也同時在這篇論文中被討論。

關鍵字

頂夸克；共軛宇稱破壞；頂夸克對；緊湊緲子螺線圈

並列摘要

The research is to measure the CP violation in top quark pair at √s = 13TeV in CMS experiment. It is based on the √s = 8TeV energy scale result published in JHEP. According to the data collected from pp collider with integrated luminosity 35.9fb^{-1} in 2016 run, the asymmetry will be measured by T-odd triple product observables with specific final states which are exact one lepton and at least four jets. The uncertainty, background interference, and the dilution effect of the analysis have been well prepared. Besides, the T-even observables and new physics sources of top quark pair CPV are discussed.

並列關鍵字

CMS ； Top quark pair ； CP violation ； Top quark

參考文獻

K. Olive, “Review of Particle Physics”, Chinese Physics C 38 (aug, 2014) 090001

Google Scholar

H.-Y. Zhou, “CP violation in top quark pair production at hadron colliders”, Phys. Rev. D58 (1998) 114002, doi: 10.1088/1674-1137/38/9/090001

Google Scholar

S. K. Gupta and G. Valencia, “CP-odd correlations using jet momenta from tt events at the Tevatron”, Phys. Rev. D 81 (Feb, 2010) 034013, doi: 10.1103/PhysRevD.81.034013

Google Scholar

O. Antipin and G. Valencia, “T-odd correlations from CP violating anomalous top-quark couplings revisited”, Phys. Rev. D 79 (Jan, 2009) 013013, doi: 10.1103/PhysRevD.93.014020

Google Scholar

S. K. Gupta, A. S. Mete, and G. Valencia, “CP violating anomalous top-quark couplings at the LHC”, Phys. Rev. D 80 (Aug, 2009) 034013, doi: 10.1103/PhysRevD.80.034013

Google Scholar

國際替代計量

於緊湊緲子螺線圈質心能量十三兆電子伏特透過輕子與噴流最終態尋找頂夸克對的共軛宇稱破壞

全文下載

主題瀏覽