CTP

Studying High energy processes with CalcHep & LanHep

Safinaz R. Abdel Rahman Center of Theoretical Physics – El Azhar University.

Egypt Bogoliubov Laboratory of Theoretical Physics JINR -Dubna -Russia

Supervision

A.Gladyshev – A. Bednyakov JINR Student Practice For Students From ARE.6/11/2009

Outline

An Introduction To CalcHep & LanHep packages.

Why all these programs?

Studying e-e+



u-u+ interaction.

Studying e-e+



Standard Model.

e-e+ in QED Model and

JINR Student Practice For Students From ARE.6/11/2009

Features of CalcHEP

- Can evaluate any decay and scattering processes within any (user defined) model using Feynman rules.

- Tree level processes.

JINR Student Practice For Students From ARE.6/11/2009

LanHep

-Generate Feynman rules for new physics models.

-Reads Lagrangian.

- Writes Feynman rules in the form of four tables in LanHEP format as well as tables in Latex or Pdf format.

JINR Student Practice For Students From ARE.6/11/2009

e-e+



u-u+ interaction

Set the Lagrangian and construct Feynman diagrams to get M matrix.

- Construct Feynman diagram and getting M matrix JINR Student Practice For Students From ARE.6/11/2009

Getting I M I and integrate To get the total cross Section JINR Student Practice For Students From ARE.6/11/2009

JINR Student Practice For Students From ARE.6/11/2009 ?

CalcHEP menu structure: GUI

JINR Student Practice For Students From ARE.6/11/2009

JINR Student Practice For Students From ARE.6/11/2009

u-u+ Threshold

JINR Student Practice For Students From ARE.6/11/2009

JINR Student Practice For Students From ARE.6/11/2009

Angular Dependence

JINR Student Practice For Students From ARE.6/11/2009

e-e+



e-e+ In QED And Standard Model

n JINR Student Practice For Students From ARE.6/11/2009

JINR Student Practice For Students From ARE.6/11/2009

LanHep

JINR Student Practice For Students From ARE.6/11/2009

QED JINR Student Practice For Students From ARE.6/11/2009 ?

S.M

All Scientists From all The World Try To Follow These Tiny Fantastic Particles … JINR Student Practice For Students From ARE.6/11/2009

Thank You So Much

JINR Student Practice For Students From ARE.6/11/2009