Inclusive and differential measurements of the tt¯ charge asymmetry in pp collisions at √s=8 TeV

CMS Collaboration

研究成果: Article査読

27 被引用数 (Scopus)

抄録

The tt¯ charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb−1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt¯ system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of −0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model.

本文言語English
ページ(範囲)154-179
ページ数26
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
757
DOI
出版ステータスPublished - 2016 6月 10
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

フィンガープリント

「Inclusive and differential measurements of the tt¯ charge asymmetry in pp collisions at √s=8 TeV」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル