中国物理学会高能物理分会第十四届全国粒子物理学术会议（2024）

Measurement of the total and differential production cross-sections of ttW at 13TeV in 140fb−1 of data with the ATLAS detector

Not scheduled

20m

Oral report TeV物理和超出标准模型新物理 分会场一

Speaker

家琳 李 (上海交通大学)

Description

I will present ttW differential cross-section measurement using 140fb-1 proton-proton collision data recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. The inclusive ttW production cross-section is measured to be 880+80fb, in agreement with predictions within 2 standard deviations. This result is a very important input for the ongoing ttH measurement.
Differential cross-section measurements characterize this process in detail for the first time. Several particle-level observables are compared to a variety of theoretical predictions which are in good agreement with the normalized differential cross-section results.
The report will focus on the following contents:

1. Analysis strategies
2. Main background estimation
3. Inclusive cross-section measurement
4. Differential cross-section measurement