**HEPTOOLS**

http://heptools.inp.demokritos.gr/

**VACANCIES**

13 Early stage researcher positions (PhD studentships)

12 Experienced researcher positions (post-doc fellowships)

MRTN-CT-2006-035505

*Tools and Precision Calculations for Physics Discoveries
at Colliders*

Participants Work Plan Milestones

**Project Overview**

*Particle Physics
aims to understand the ultimate building blocks of nature and their
interactions. This project
aims to develop the theoretical studies needed to accomplish this goal at
present and future high-energy colliders.
It is the aim of the network to provide the appointed ESRs/ERs with a
stimulating and active research
and training/TOK environment in both the fundamental and technical aspects of
fundamental research in
particle physics phenomenology.*

**Overall Objectives**

Our research approach is based on the twin concepts of discovery and precision
physics, which taken together

provide a powerful tool for testing the StandardModel (SM) of fundamental
interactions and uncovering evidence

for new physics. Very heavy new particles contribute only indirectly via quantum
fluctuations and

thus subtly alter the size of measured parameters of the SM such as the relation
between the weak boson

masses. Alternatively, at sufficiently high energies, the new particles and
interactions can be observed directly,

generally in multi-particle final states. In both cases, the identification of
physics beyond the SM

requires very precise predictions that can be measured in high-energy
experiments, in particular at the Large

Hadron Collider (LHC) and the International Linear Collider (ILC). The progress
has to proceed in two

directions. On the one hand, the theoretical precision of many observables must
be improved by calculating

higher-order corrections, i.e. by evaluating Feynman diagrams with more loops.
Secondly, precise calculations

are required for more complicated processes, i.e. for processes with more
external particles. These are

needed both for the SM and for extensions thereof.

The objectives of the network can be classed into three areas. The first area
deals with the development of

sophisticated tools for precise calculations of multi-leg and/or multi-loop
processes. The second area encompasses

precision calculations for the LHC and the ILC that are performed with tools
developed within

and outside our network. These calculations involve both strong and electroweak
corrections and will be performed

in the SM but also in extensions thereof. The third area of objectives deals
with discovery physics.,

i.e. methods needed to discover new phenomena and to determine the properties of
new particles and interactions.

In this respect, our network will focus on questions related to electroweak
symmetry breaking and

the origin of mass together with the (related) quest for more general symmetries
such as supersymmetry.

**Overall Approach and Methodology**

The research methods employed by the network involve a combination of computer
algebraic, analytical and

numerical tools and physical ideas spanning a very wide range of techniques and
expertise.

The techniques of perturbative quantum field theory are essential. The available
computational tools, such

as symbolic manipulation programs, and efficient numerical libraries will be
employed as far as possible.

Dedicated packages for Feynman diagram calculations, Monte Carlo integration and
event generation will

be used and further developed. Existing models for physics beyond the Standard
Model will be phenomenologically

investigated, and possible signals for new physics at the LHC and the ILC will
be studied within

specific models.

Scientific dialogue and collaboration is vital and will be implemented by
electronic mail exchange, a network

webpage, secondments and the organization of regular meetings. The local
training will be supplemented by

the network schools and the participation of the young researchers in various
other schools and workshops.

**
Training and
Transfer of Knowledge programme**

**
Description of
the Research, Transfer of Knowledge and Training profile for each node**

Salaries for Early Sage (ESR) and Experienced researchers (ER)

**CONSORTIUM***
*

The Coordinator

1 National Research Center for Scientific Research ”Demokritos” [NCSR-D], Greece.

Other Contractors

2 University of Durham [UDUR], United Kingdom.

3 Universidad de Granada [UGR], Spain.

4 Instytut Fizyki Jadrowej im. HenrykaNiewodniczanskiego Polskiej AkademiiNauk [IFJ-PAN], Poland.

5 Instituto Superior Tecnico [IST], Portugal.

6 Laboratoire de Physique Th`eorique, Universit´e Paris Sud [UPS], France.

7 Max-Planck-Gesellschaft zur F¨orderung der Wissenschaften e.V. [MPG], Germany.

8 Stichting Katholieke Universiteit, named Radboud University Nijmegen [RU], The Netherlands.

9 Istituto Nazionale di Fisica Nucleare (INFN) [INFN], Italy.

10 Dipartimento di Fisica Teorica, Universita di Torino [DFTTO], Italy.

11 ¨Osterreichische Akademie der Wissenschaften/Institut f¨ur Hochenergiephysik [OEAW / HEPHY Vienna],

Austria.

12 Paul Scherrer Institut (PSI) [PSI], Switzerland.

13 Deutsches Elektronen-Synchrotron (DESY) [DESY], Germany.

14 European Organization For Nuclear Research (CERN) [CERN], Switzerland, International Organization

of European Interest.

15 Skobeltsyn Institute of Nuclear Physics of Moscow State University [SINP MSU], The Russian Federation.

16 Brookhaven National Laboratory (BNL) [BNL], The United States of America.

17 High Energy Accelerator Research Organization (KEK) [KEK], Japan.