title: ÐÑÐ¾ÑÐµÑÑÑ Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð°ÑÑÐ¾Ð½Ð½ÑÑ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¹ Ð¿ÑÐ¸ Ð²ÑÑÐ¾ÐºÐ¸Ñ ÑÐ½ÐµÑÐ³Ð¸ÑÑ
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: Multiparton interactions processes at high energies
Creators: name: Ð¥Ð°ÑÐ°ÑÑÑÐ½, Ð Ð¾Ð±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: 2020
Subjects: Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð°ÑÑÐ¾Ð½Ð½Ð¾Ðµ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ
Ð¿ÐµÑÐµÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
Ð´Ð²ÑÑ ÑÐ°ÑÑÐ¸ÑÐ½Ð°Ñ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÐ½ÐºÑÐ¸Ñ
ÑÑÑÐµÐºÑ Ñ ÑÐµÐ±ÑÐ°
Ð¿ÑÐ¾ÑÐ¾Ð½-Ð¿ÑÐ¾ÑÐ¾Ð½Ð½Ð¾Ðµ ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
ÑÐ³Ð»Ð¾Ð²ÑÐµ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¸
Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ðµ
multiparton interactions
rescattering
two-particle correlation function
ridge effect
proton-proton scattering
angular correlation
multiple production

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð°ÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð² Ð¿ÑÐ¾ÑÐ¾Ð½-Ð¿ÑÐ¾ÑÐ¾Ð½Ð½ÑÑ ÑÐ¾ÑÐ´Ð°ÑÐµÐ½Ð¸ÑÑ Ñ Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾ÑÑÑÑ Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ ÐÐ¾Ð»ÑÑÐ¾Ð³Ð¾ Ð°Ð´ÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð»Ð»Ð°Ð¹Ð´ÐµÑÐ° (ÐÐÐ). Ð ÑÐ°ÑÑÐ½Ð¾ÑÑÐ¸, Ð¸Ð·ÑÑÐ°Ð»Ð¾ÑÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð¿ÐµÑÐµÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð° Ð¿Ð¾ÑÐ»Ðµ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ Ð¶ÐµÑÑÐºÐ¾Ð³Ð¾ Ð¿Ð°ÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð½Ð° Ð´Ð²ÑÑÑÐ°ÑÑÐ¸ÑÐ½ÑÑ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ°ÑÑÐ¸Ñ, Ñ ÑÐµÐ»ÑÑ Ð¾Ð±ÑÑÑÐ½Ð¸ÑÑ Ð¿Ð¾ÑÐ²Ð»ÐµÐ½Ð¸Ðµ Ð½Ð° Ð½ÐµÐ¹ ÑÐ°Ðº Ð½Ð°Ð·ÑÐ²Ð°ÐµÐ¼Ð¾Ð³Ð¾ "ÑÑÑÐµÐºÑÐ° ÑÑÐµÐ±ÑÐ°", Ð²ÑÐ·Ð²Ð°Ð²ÑÐµÐ³Ð¾ Ð² ÑÐ²Ð¾Ðµ Ð²ÑÐµÐ¼Ñ Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð¸Ð½ÑÐµÑÐµÑ Ð¸ Ð´Ð¾ ÑÐ¸Ñ Ð¿Ð¾Ñ Ð½Ðµ Ð¸Ð¼ÐµÑÑÐ¸Ð¹ ÑÐ´Ð¾Ð²Ð»ÐµÑÐ²Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ. ÐÐ°Ð´Ð°ÑÐ¸ ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ·ÑÑÐµÐ½Ð¸Ðµ ÐºÐ¸Ð½ÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð°ÑÑÐ¾Ð½Ð½ÑÑ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¹; 2. ÐÐ·ÑÑÐµÐ½Ð¸Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¸ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð¿ÐµÑÐµÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð² ÐÐ¾Ð½ÑÐµ-ÐÐ°ÑÐ»Ð¾ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐµ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ¾Ð±ÑÑÐ¸Ð¹ PYTHIA8; 3. ÐÐ¾Ð´Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð¿ÐµÑÐµÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ð² PYTHIA8, Ñ ÑÐµÐ»ÑÑ ÑÑÐµÑÐ° ÑÑÑÐµÐºÑÐ¾Ð², ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿ÑÐµÐ´Ð¿Ð¾Ð»Ð¾Ð¶Ð¸ÑÐµÐ»ÑÐ½Ð¾ ÑÐ²Ð»ÑÑÑÑÑ Ð¿ÑÐ¸ÑÐ¸Ð½Ð¾Ð¹ ÑÑÑÐµÐºÑÐ° ÑÑÐµÐ±ÑÐ°; 4. Ð¡Ð±Ð¾Ñ ÑÑÐ°ÑÐ¸ÑÑÐ¸ÐºÐ¸ Ñ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¼ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ¾Ð¼ PYTHIA8 Ð¸ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð´Ð²ÑÑÑÐ°ÑÑÐ¸ÑÐ½ÑÑ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ Ð·Ð°ÑÑÐ¶ÐµÐ½Ð½ÑÑ ÑÐ°ÑÑÐ¸Ñ Ð² Ð¿ÑÐ¾ÑÐ¾Ð½-Ð¿ÑÐ¾ÑÐ¾Ð½Ð½ÑÑ ÑÐ¾ÑÐ´Ð°ÑÐµÐ½Ð¸ÑÑ Ñ Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ²ÐµÐ½Ð½Ð¾ÑÑÑÑ Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ ÐÐÐ. ÐÑÐ»Ð° Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¼Ð¾Ð´Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð¿Ð°ÐºÐµÑÐ° PYTHIA8 Ð¸ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ°ÑÑÐµÑÑ Ð¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ, Ð½Ð°Ð³Ð»ÑÐ´Ð½Ð¾ Ð¿Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÑÑÐ¸Ðµ, ÐºÐ°ÐºÐ¸Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð¼ Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð°ÑÑÐ¾Ð½Ð½ÑÐµ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð²Ð»Ð¸ÑÑÑ Ð½Ð° Ð´Ð²ÑÑÑÐ°ÑÑÐ¸ÑÐ½ÑÑ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ñ. ÐÐ½Ð°Ð»Ð¸Ð· Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿Ð°ÐºÐµÑÐ¾Ð² PYTHIA8 Ð¸ ROOT.
description: This work is devoted to the study of the influence of multiparton interaction processes in proton-proton collisions with a large multiplicity at the energies of the Large Hadron Collider (LHC). In particular, the influence of the parton rescattering process after the main hard parton subprocess on the two-particle correlation function of the formed particles was studied in order to explain the appearance of the so-called âridge effectâ on it, which aroused great interest after its discovery and still does not have a satisfactory physical description. Tasks that were solved during the study: 1. Studying the kinematic features of multiparton interactions. 2. Studying the model and algorithm of rescattering in the Monte Carlo generator PYTHIA8. 3. Modification of the rescattering algorithm in order to take into account effects that are supposedly the cause of the ridge effect. 4. Collection of statistics with a modified generator and construction with its help of charged two-particle correlation functions. Calculations show how multi-parton interactions affect the two-particle correlation function. The analysis was carried out by mathematical modeling using the PYTHIA8 and ROOT packages.