looptools software package provides Integral Evaluator of One-loop Feynman Diagram, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install looptools
looptools is installed in your system.
Make ensure the looptools package were installed using the commands given below,
$ sudo dpkg-query -l | grep looptools *
You will get with looptools package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Science |
| Package | looptools |
| Version | 2.8-1 |
| Description | Integral Evaluator of One-loop Feynman Diagram |
| Sub Section | Science |