title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² Ð² d+d-ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ SPD Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð²
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: Modelling of meson production processes in d+d-collisions at energies on SPD using nuclear-modified parton distribution functions
Creators: name: Ð¡ÑÐµÐºÐ°ÑÐµÐ²Ð°, ÐÐ°ÑÑ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: 2023
Subjects: ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ ÑÑÐ½ÐºÑÐ¸Ð¸ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð²
LHAPDF
Pythia8
d+d-ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ
Ð¼ÐµÐ·Ð¾Ð½Ñ
Ð¿ÑÑÐ¼ÑÐµ ÑÐ¾ÑÐ¾Ð½Ñ
SPD
nuclear parton distribution functions
d+d-collisions
mesons
prompt photons

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² Ð² d+d-ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ SPD Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð²Â». ÐÐ°ÑÑÐ¾ÑÑÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¿ÑÑÐ¼ÑÑ ÑÐ¾ÑÐ¾Ð½Ð¾Ð² Ð¸ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² ^0, /Î¨, ^+ Ð¸ ^â Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð´ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð² Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ â = 27 ÐÑÐ Ð¸ â = 13.5 ÐÑÐ Ð² Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐµ Pythia8 Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿Ð°ÐºÐµÑÐ° LHAPDF Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ TUJU21 Ð¸ nCTEQ15 Ð½Ð° Ð½Ð¸Ñ. Ð Ð½Ð°ÑÑÐ¾ÑÑÐµÐ¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð¾Ð±Ð·Ð¾Ñ ÐºÐ¾Ð»Ð»Ð¸Ð½ÐµÐ°ÑÐ½ÑÑ, Ð¾Ð±Ð¾Ð±ÑÐµÐ½Ð½ÑÑ, Ð·Ð°Ð²Ð¸ÑÑÑÐ¸Ñ Ð¾Ñ Ð¿Ð¾Ð¿ÐµÑÐµÑÐ½Ð¾Ð³Ð¾ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ° Ð¸ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð², Ð° ÑÐ°ÐºÐ¶Ðµ ÐºÑÐ°ÑÐºÐ¸Ð¹ Ð¾Ð±Ð·Ð¾Ñ Ð¿Ð°ÐºÐµÑÐ° LHAPDF. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ð½Ð°Ð±Ð¾ÑÐ¾Ð² TUJU21 Ð¸ nCTEQ15 Ð½Ð° Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² ^0, /Î¨, ^+ Ð¸ ^â, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÑÐ¼ÑÑ ÑÐ¾ÑÐ¾Ð½Ð¾Ð² Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð´ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð² Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ â = 27 ÐÑÐ Ð¸ â = 13.5 ÐÑÐ Ð² Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐµ Pythia8 Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿Ð°ÐºÐµÑÐ° LHAPDF.Â  ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð±ÑÐ»Ð¸ ÑÐµÑÐµÐ½Ñ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ±Ð·Ð¾Ñ ÐºÐ¾Ð»Ð»Ð¸Ð½ÐµÐ°ÑÐ½ÑÑ, Ð¾Ð±Ð¾Ð±ÑÐµÐ½Ð½ÑÑ, Ð·Ð°Ð²Ð¸ÑÑÑÐ¸Ñ Ð¾Ñ Ð¿Ð¾Ð¿ÐµÑÐµÑÐ½Ð¾Ð³Ð¾ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ° Ð¸ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð². 2. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð½Ð°Ð±Ð¾ÑÐ¾Ð² TUJU21 Ð¸ nCTEQ15 Ð½Ð° Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¿ÑÑÐ¼ÑÑ ÑÐ¾ÑÐ¾Ð½Ð¾Ð² Ð¸ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² ^0, /Î¨, ^+ Ð¸ ^â Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð´ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð² Ð¿ÑÐ¸ ÑÐ½ÐµÑÐ³Ð¸ÑÑ â = 27 ÐÑÐ Ð¸ â = 13.5 ÐÑÐ Ð² Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐµ Pythia8 Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿Ð°ÐºÐµÑÐ° LHAPDF. ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐ¹ Ð¿Ð°ÐºÐµÑ Pythia8 ÑÐ²Ð»ÑÐµÑÑÑ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ¾Ð¼ ÑÐ¾Ð±ÑÑÐ¸Ð¹, Ð² ÐºÐ¾ÑÐ¾ÑÐ¾Ð¼ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ Ð¼ÐµÑÐ¾Ð´ ÐÐ¾Ð½ÑÐµ-ÐÐ°ÑÐ»Ð¾. ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°ÑÑ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÑ, Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð´ÑÑÐ¸Ðµ Ð¿ÑÐ¸ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ð¸ ÑÐ°ÑÑÐ¸Ñ Ð¿ÑÐ¸ Ð²ÑÑÐ¾ÐºÐ¸Ñ ÑÐ½ÐµÑÐ³Ð¸ÑÑ, Ð¸ Ð¿Ð¾Ð»ÑÑÐ°ÑÑ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð¾ ÑÐ°ÑÑÐ¸ÑÐ°Ñ, ÑÐ¾Ð¶Ð´ÐµÐ½Ð½ÑÑ Ð² ÑÑÐ¸Ñ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ. ÐÐ»Ñ Ð½Ð°ÑÑÐ¾ÑÑÐµÐ¹ ÑÐ°Ð±Ð¾ÑÑ Ðº Pythia8 Ð±ÑÐ»Ð° Ð¿Ð¾Ð´ÐºÐ»ÑÑÐµÐ½Ð° Ð±Ð¸Ð±Ð»Ð¸Ð¾ÑÐµÐºÐ° LHAPDF, Ð¸Ð· ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð²Ð·ÑÑÑ Ð´Ð²Ð° Ð½Ð°Ð±Ð¾ÑÐ° ÑÐ´ÐµÑÐ½Ð¾-Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ð² Ð´ÐµÐ¹ÑÑÐ¾Ð½Ðµ Ð¸ Ð½Ð°Ð±Ð¾Ñ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ð² Ð¿ÑÐ¾ÑÐ¾Ð½Ðµ. Ð¤Ð°ÐºÑÐ¾ÑÑ ÑÐ´ÐµÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÑÑ Ð´Ð»Ñ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ ÑÐ°ÑÑÐ¸Ñ Ð² ÑÐ´ÑÐ¾-ÑÐ´ÐµÑÐ½ÑÑ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ, Ð¸ Ð² Ð½Ð°ÑÑÐ¾ÑÑÐµÐ¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÑÐ¸ÑÑÐ²Ð°ÑÑÑÑ ÐºÐ°Ðº Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ðµ Ð²ÑÑÐ¾Ð´Ð° ÑÐ°ÑÑÐ¸Ñ Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð¿Ð°ÑÑ Ð½ÑÐºÐ»Ð¾Ð½Ð¾Ð² Ñ Ð´ÐµÐ¹ÑÑÐ¾Ð½Ð½ÑÐ¼Ð¸ ÑÑÐ½ÐºÑÐ¸ÑÐ¼Ð¸ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ðº Ð²ÑÑÐ¾Ð´Ñ ÑÐ°ÑÑÐ¸Ñ Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð¿Ð°ÑÑ Ð½ÑÐºÐ»Ð¾Ð½Ð¾Ð² Ñ ÑÑÐ½ÐºÑÐ¸ÑÐ¼Ð¸ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² ÑÐ²Ð¾Ð±Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð½ÑÐºÐ»Ð¾Ð½Ð°. Ð¢Ð°ÐºÐ¸Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð¼ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÑÑÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐ´ÐµÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ ÑÑÐ½ÐºÑÐ¸Ð¹ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿Ð°ÑÑÐ¾Ð½Ð¾Ð² Ð½Ð° Ð¿ÑÐ¾ÑÐµÑÑÑ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² Ð² ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸ÑÑ Ð´ÐµÐ¹ÑÑÐ¾Ð½Ð¾Ð².
description: The subject of the graduation qualification work: Â«Modelling of meson production processes in d+d-collisions at energies on SPD using nuclear-modified parton distribution functionsÂ». This work is devoted to modeling the production of direct photons and mesons ^0, /Î¨, ^+ and ^â in collisions of deuterons at energies â = 27 GeV and â = 13.5 GeV in the Pythia8 generator using the LHAPDF package and study the effect of the nuclear-modified functions of TUJU21 and nCTEQ15 on them. There is theoretical review of collinear, generalized, transverse-momentum-dependent, nuclear-modified parton distribution functions and the LHAPDF package are carried out in this work. The effect of the nuclear-modified parton distribution functions of the TUJU21 and nCTEQ15 sets on the production of prompt photons and mesons ^0, /Î¨, ^+ Ð¸ ^â in the collisions of deuterons at energies â = 27 GeV and â = 13.5 GeV is determined in the Pythia8 generator using the LHAPDF package. Goals that were solved in the study: 1. An overview of collinear, generalized, transverse momentum-dependent, and nuclear-modified parton distribution functions. 2. Determination of the effect of nuclear-modified distribution functions of the TUJU21 and nCTEQ15 sets on the production of prompt photons and mesons 0, /Î¨, + Ð¸ â in the collisions of deuterons at energies â = 27 GeV and â = 13.5 GeV in the Pythia8 generator using the LHAPDF package. The Pythia8 software package is an event generator that uses the Monte Carlo method. The program allows to simulate the physical processes that occur when particles collide at high energies and obtain information about the particles that are born in collisions. For this work, the LHAPDF library was connected to Pythia8, due to which two sets of nuclear-modified parton distribution functions in the deuteron and a set of parton distribution functions in the proton were used. The factors of nuclear modification are used to quantitatively describe the features of particle production in nucleusânucleus collisions, and in this work they are calculated as the ratio of the output of particles in collisions of nucleons` pair with deuteron parton distribution functions to the output of particles in collisions of a nucleons` pair with free nucleon parton distribution functions. So the effect of the nuclear modification of the parton distribution functions on the processes of meson production in deuteron collisions is determined.