High Energy Collider Physics
Welcome to the IU HEP Group Home Page
(Research by the Task A of the IU DOE Contract)
Experimental Particle Physics Research with ATLAS, D0, ILC Experiments
The IU HEP collider group investigates the fundamental constituents of
matter and forces through very high energy collisions of hadronic
particles. Our research takes place primarily at the
located at the CERN
laboratory in Switzerland, the
near Chicago, and the proposed International Linear Collider (ILC).
Fermilab collides protons and
antiprotons at the current energy frontier, and our group has a rich
history of measuring the lifetimes of B hadrons with the D0 Experiment. Recently, we have been involved in
the first observation of Bs oscillations, the Ξb baryon
discovery, and searches for CP violation in the Bc system. We also
have newer interests in high-pT processes, namely the production of
W bosons, vector boson fusion, and
dijet angular distributions. These measurements provide
stringent tests of the theory of QED and QCD, are important for tuning
MC models we rely on, and serve as a test bed for the experimental
techniques which will be used in the next generation of collider
experiments at the
Large Hadron Collider (LHC). D0 is a collaboration of about 600 physicists, engineers and technicians from 18 different countries.
To learn more, visit our IU D0 page.
Our group's other main activity is preparing for the turn on of the
LHC, which is anticipated for the fall of 2009. The energy reach of the
LHC will supercede the Tevatron by nearly an order of magnitude.
The scientific community anticipates that the discoveries made at the LHC
will either complete the Standard Model with the discovery of the Higgs Boson,
or change our paradigm drastically through the discovery of new particles, interactions
or extra dimensions..
We have been
working for several years on the building and commissioning of the
Transition Radiation Tracker
(TRT), which will play a vital role in all
measurements made at the ATLAS experiment. Because of the TRT's special
ability to measure heavily ionizing particles, our group has a keen
interest in searches for charged massive stable new particles. We are
also very active in searches for new resonances in highly boosted top
quark events and searches for the
ATLAS is a collaboration of around 2500 physicists, engineers and technicians from 38 different countries.
To learn more, visit our IU ATLAS page.
Some of our group members have worked on the
at CERN and the
ZEUS Experiment at
These backgrounds in lepton-lepton and lepton-proton scattering serve to
broaden our expertise in Electroweak and Strong interactions, providing
a perspective that goes beyond the world of hadron-hadron interactions.
We also enjoy building detectors, and usually have ongoing
hardware projects in addition to the physics analyses we pursue.
Finally, we have a large presence in ATLAS computing. We run a Tier 2
Center, jointly with University of Chicago, and are very involved in
ATLAS software development.