title: Ð ÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ñ ÐºÐ¸Ð½ÐµÐ¼Ð°ÑÐ¸ÐºÐ¸ ÑÐ¾Ð±ÑÑÐ¸Ð¹ Ñ Ð¿Ð°ÑÐ½ÑÐ¼ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸ÐµÐ¼ t-ÐºÐ²Ð°ÑÐºÐ° Ð¸ t-Ð°Ð½ÑÐ¸ÐºÐ²Ð°ÑÐºÐ° Ñ Ð´Ð²ÑÐ¼Ñ Ð»ÐµÐ¿ÑÐ¾Ð½Ð°Ð¼Ð¸ Ð² ÐºÐ¾Ð½ÐµÑÐ½Ð¾Ð¼ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ð¸ Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ ATLAS
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Reconstruction of the kinematics of events with pair-production of t-quark and t-antiquark with two leptons in the final state in the ATLAS experiment
Creators: name: ÐÐ¾ÑÐµÐ²Ð°, ÐÐ»ÐµÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÑÐ¸Ð·Ð¸ÐºÐ° Ð²ÑÑÐ¾ÐºÐ¸Ñ ÑÐ½ÐµÑÐ³Ð¸Ð¹
Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð°Ð´ÑÐ¾Ð½Ð½ÑÐ¹ ÐºÐ¾Ð»Ð»Ð°Ð¹Ð´ÐµÑ
ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½Ñ ATLAS
Ð¼Ð°ÑÑÐ¸ÑÐ° Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸
ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ñ ÐºÐ¸Ð½ÐµÐ¼Ð°ÑÐ¸ÐºÐ¸
Ð¼ÐµÑÐ¾Ð´ ÐÐ¾Ð½Ð½ÐµÐ½ÑÐ°Ð¹Ð½Ð°
Ð¼ÐµÑÐ¾Ð´ ÐÐ¾Ð½ÑÐµ-ÐÐ°ÑÐ»Ð¾
Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐ¹ Ð¿Ð°ÐºÐµÑ ROOT
Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾Ñ Madgraph
high energy physics
large hadron collider
ATLAS experiment
density matrix
kinematics reconstruction
Sonnenschein method
Monte-Carlo method
ROOT software package
Madgraph generator

description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ ÑÐ¸Ð·Ð¸ÐºÐ° t-ÐºÐ²Ð°ÑÐºÐ° Ð¸ Ð¼ÐµÑÐ¾Ð´Ñ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÐºÐ¸Ð½ÐµÐ¼Ð°ÑÐ¸ÐºÐ¸ Ð¿Ð°ÑÑ tt Ñ Ð´Ð²ÑÐ¼Ñ Ð»ÐµÐ¿ÑÐ¾Ð½Ð°Ð¼Ð¸ Ð² ÐºÐ¾Ð½ÐµÑÐ½Ð¾Ð¼ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ð¸. Ð¡ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¿Ð°ÐºÐµÑÐ° ROOT Ð±ÑÐ» ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½ Ð½Ð¾Ð²ÑÐ¹ Ð¼ÐµÑÐ¾Ð´ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ - Ð¼ÐµÑÐ¾Ð´ ÐÐ¾Ð½Ð½ÐµÐ½ÑÐ°Ð¹Ð½Ð°. ÐÑÐ»Ð° Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¿ÑÐ¾Ð²ÐµÑÐºÐ° Ð¼ÐµÑÐ¾Ð´Ð° Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐ¾Ð±ÑÑÐ¸Ð¹, Ð³ÐµÐ½ÐµÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ ÐÐ¾Ð½ÑÐµ-ÐÐ°ÑÐ»Ð¾. Ð¢Ð°ÐºÐ¶Ðµ Ð±ÑÐ»Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¸ ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð° Ð¿ÑÐ¾ÑÐµÐ´ÑÑÐ° ÑÐ°Ð·Ð¼ÑÑÐ¸Ñ (âsmearingâ) Ð´Ð»Ñ ÑÑÐµÑÐ° Ð¸ÑÐºÐ°Ð¶ÐµÐ½Ð¸Ð¹ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ°. ÐÑÐ°ÑÐºÐ¾ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ð¹ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸, ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ° ATLAS. ÐÐ°Ð½Ð½ÑÐ¹ Ð¼ÐµÑÐ¾Ð´ Ð±ÑÐ´ÐµÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½ Ð´Ð»Ñ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÐºÐ¸Ð½ÐµÐ¼Ð°ÑÐ¸ÐºÐ¸ ÑÐ¾Ð±ÑÑÐ¸Ð¹ Ñ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸ÐµÐ¼ t-ÐºÐ²Ð°ÑÐºÐ° Ð¸ t-Ð°Ð½ÑÐ¸ÐºÐ²Ð°ÑÐºÐ° Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ ATLAS Ð² Ð¿ÑÐ¾ÑÐ¾Ð½-Ð¿ÑÐ¾ÑÐ¾Ð½Ð½ÑÑ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð² ÑÐ¸ÑÑÐµÐ¼Ðµ ÑÐµÐ½ÑÑÐ° Ð¼Ð°ÑÑ Ñ ÑÐ½ÐµÑÐ³Ð¸ÐµÐ¹ 13 Ð¢ÑÐ Ð² Ð´Ð²ÑÑÐ»ÐµÐ¿ÑÐ¾Ð½Ð½Ð¾Ð¼ ÐºÐ°Ð½Ð°Ð»Ðµ Ð´Ð»Ñ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° ÑÐ¿Ð¸Ð½Ð¾Ð²ÑÑ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¹.
description: This work describes the physics of the t-quark and methods for reconstructing the kinematics of a pair of tt with two leptons in the final state. A new reconstruction method, the Sonnenschein method, was implemented using the ROOT software package. The method was tested using events generated by the Monte Carlo method. A âsmearingâ procedure was also developed and implemented to account for detector distortion. A brief description of the experimental setup, the device of the ATLAS detector, is given. This method will be used to reconstruct the kinematics of the a t-quark and a t-antiquark pairs production in the ATLAS experiment in p-p collisions in the center-of-mass energy 13 TeV in a dilepton channel to analyze spin correlations.