FSU Experimental HEP Faculty

ToddAdams

SusanBlessing

HarveyGoldman S

SharonHagopian

VaskenHagopian

KurtisJohnson

HarrisonProsper

HorstWahl

What is High Energy Physics?

High Energy Physics is the study of the most basic particles and forces of nature We explore the smallest scales and the highest

energies

We want to know what really makes the Universe tick

Also known as HEP or as particle physics

What have we done before?

Discovered lots of new particles quarks, neutrinos, taus, Z bosons, …

Determined what protons and neutrons are made of

Combined two "fundamental" forces of nature: electromagnetism the weak force

Created a model which explains MOST of what we have observed...

The Standard ModelThe Standard Model is our best knowledge of everything.

It consists of all known particles and forces (except gravity).

By comparing experimental results with predictions from the Standard Model, we test our understanding of the universe

The Standard Model has worked remarkably well for more than 20 years

What are the Big Questions to be Answered?

What is the origin of mass?

Can all of the forces be unified?

How do neutrinos oscillate?

Why do we see more matter than anti-matter?

What is out there that we have never observed?

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FSU High Energy Physics Program

We currently work on two major experiments:

D0 at Fermilab

CMS at CERN

Fermilab Tevatron

Currently, the world's premier accelerator facility Proton-Anti-Proton collisions at a center of mass energy of 1.9 trillion electron-volts

Two collider experiments D0 and CDF

Other physics neutrino physics, CP-violation,

astrophysics and more

Located outside of Chicago

Scientists from all around the world come to Fermilab to do high energy physics

The D0 Experiment

Started taking data Spring, 2001

Will take data until 2007

There will be an upgrade in 2005

We will end up with a petabyte of data

Collider experiment which is built around the collision point to detect particles flying out in all directions

Latest results frompp Collisions at DØ

Detector in Collision Hall January 2001

D0 Data Taking

24 hours/day7 days/week

for the next 5+ years

currently recording a few million events/day

FSU People at D0

Latest results frompp Collisions at DØ

Jet Events Calorimeter Level 1 trigger

Run124640 event 524035

V. ZutshiBrookhaven

Physics of D0 Higgs Boson

needed to resolve electroweak symmetry breaking and responsible for creating mass. Not yet discovered, but there are many indications that D0 and CDF can find it.

Supersymmetry theory which predicts each known particle has a partner, none of

which have ever been seen.

Top Quark discovered at D0 and CDF. Now we will explore its properties.

QCD - Quantum ChromoDynamics. D0 can explore how well it describes proton-anti-proton collisions and

study what makes up the proton.

Other new particle searches Technicolor, Leptoquarks, etc.

CERN

The CMS Experiment Large Hadron Collider (LHC)

at CERN

Proton-proton collisions at 14 trillion electron-volts

two primary experiments – CMS and Atlas

begins operation in 2007

Compact Muon Spectrometer (CMS) Vasken Hagopian is co-leader of the US-CMS effort

Florida State is involved in the hadronic calorimeter which is being tested and constructed at FSU, Fermilab and CERN

CMS Detector

HCAL Under Construction

CERN testbeam 2002

Construction and testing at FNAL

What do we do? Hardware

Design, develop, test, and build electronics and detectors

Data-taking (shifts)

Software Code writing and analysis algorithm development

Data analysis discovery, measurements, tests

Presentations at meetings, seminars and conferences

Journal publications

What will you do? First 2-3 years

Finish coursework Spend summers at Fermilab learning the experiment

Next several years Some hardware project (STT, silicon, ???) Data taking Programming (C++, UNIX, scripting, graphics) Data analysis on your thesis topic

Final year Presentation and publication of thesis work Thesis defense

You will spend significant time at Fermilab

Possible Thesis TopicsSearch for/Discover the Higgs Boson

Search for new particles such as Supersymmetry, Technicolor, Leptoquarks, Cold Dark Matter, Extra Dimensions etc.

Top Quark Physics

QCD Studies including measuring the contents of the proton

W mass measurements