SANC: Расчёт QCD процессов

Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
SANC: Расчёт QCD процессов
SANC: Расчёт QCD процессов
 Стандартная Теория
 Экспериментальная проверка, ускорители
 Вычисление процессов: древесное и петлевое
 Диаграммы Фейнмана: QED, EW, QCD
 Пример вычисления процесса QCD в среде SANC
 Получение наблюдаемых, проверка СТ
 Демонстрация
22 april 2005, Dubna, Russia
Uglov Eugene D.
1
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Стандартная Теория
22 april 2005, Dubna, Russia
Uglov Eugene D.
2
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Стандартная Теория
Theory
Constant
List of parameters
Number of
parameters
Conventional QED
→e
me
2
Extended QED
→e
me, mμ, mτ
mu, mc, mt
md, ms, mb
10
EW Standard Theory
→
+ MW, MZ, MH
4 mixing angles
17
Conventional ST (+QCD)
→ +αs
Extended ST
→
22 april 2005, Dubna, Russia
18
+ mνe, mνμ, mντ
4 mixing angles
Uglov Eugene D.
25
3
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Стандартная Теория
Значения параметров СТ на 2004 (PDG):















α = e2/4πε0ħc = 7.297 352 568 (24) · 10-3 = 1 / 137.035 999 11 (46)
(Q2 = 0)
me = 0.510 99892 ± 0.000 000 04 MeV/c2
mμ = 105.658 369 ± 0.000 009 MeV/c2
mτ = 1776.99 ± 0.29 MeV/c2
mu = 1.5 to 4 MeV/c2
md = 4 to 8 MeV/c2
mc = 1.15 to 1.35 GeV/c2
ms = 80 to 130 MeV/c2
mt = 174.3 ± 5.1 GeV/c2
mb = 4.1 to 4.4 GeV/c2
MW = 80.425 ± 0.038 GeV/c2
MZ = 91.1876 ± 0.0021 GeV/c2
CKM mixing: 0.9739 to 0.9751
0.221 to 0.227
0.0029 to 0.0045
0.221 to 0.227
0.9730 to 0.9744 0.039 to 0.044
0.0048 to 0.014
0.037 to 0.043
0.9990 to 0.9992
αs (MZ) = 0.1187 (20)
53 GeV/c2 < MH < 213 GeV/c2
mνe < 3 eV/c2
mvμ < 0.19 MeV/c2
mvτ < 18.2 MeV/c2
Neutrino mixing?
22 april 2005, Dubna, Russia
Uglov Eugene D.
4
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Экспериментальная проверка,
ускорители
TEVATRON, FERMILAB
LEP, LHC, CERN
TESLA, ILC, DESY
22 april 2005, Dubna, Russia
Uglov Eugene D.
5
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Экспериментальная проверка,
ускорители
22 april 2005, Dubna, Russia
Uglov Eugene D.
6
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Вычисление процессов:
древесное и петлевое
Древесное приближение (Born):
22 april 2005, Dubna, Russia
Uglov Eugene D.
7
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Вычисление процессов:
древесное и петлевое
Петлевые поправки:
22 april 2005, Dubna, Russia
Uglov Eugene D.
8
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Вычисление процессов:
древесное и петлевое
Bremmstrahlung:
22 april 2005, Dubna, Russia
Uglov Eugene D.
9
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Вычисление процессов:
древесное и петлевое
22 april 2005, Dubna, Russia
Uglov Eugene D.
10
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Диаграммы Фейнмана:
QED, EW, QCD
QED:
Правила Фейнмана QED:
22 april 2005, Dubna, Russia
Uglov Eugene D.
11
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Диаграммы Фейнмана:
QED, EW, QCD
EW:
22 april 2005, Dubna, Russia
Uglov Eugene D.
12
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Диаграммы Фейнмана:
QED, EW, QCD
Правила Фейнмана EW:
22 april 2005, Dubna, Russia
Uglov Eugene D.
13
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Диаграммы Фейнмана:
QED, EW, QCD
QCD:
Правила Фейнмана QCD:
22 april 2005, Dubna, Russia
Uglov Eugene D.
14
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Диаграммы Фейнмана:
QED, EW, QCD
22 april 2005, Dubna, Russia
Uglov Eugene D.
15
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Пример вычисления процесса
QCD в среде SANC
Демонстрация
22 april 2005, Dubna, Russia
Uglov Eugene D.
16
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Получение наблюдаемых,
проверка СТ
22 april 2005, Dubna, Russia
Uglov Eugene D.
17
Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics Moscow State University
Демонстрация
Демонстрация расчёта QCD процессов
в системе SANC:
Support of Analytic and Numeric
calculations for experiments at Colliders
Спасибо за внимание
22 april 2005, Dubna, Russia
Uglov Eugene D.
18