Inquiring minds want to know ... - PowerPoint PPT Presentation

Loading...

PPT – Inquiring minds want to know ... PowerPoint presentation | free to download - id: 21f381-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Inquiring minds want to know ...

Description:

Intro to Particle and Nuclear Physics and the Long Island Gold Rush. Steven Manly ... Inquiring minds want to know ... Yo! What holds it together? ... – PowerPoint PPT presentation

Number of Views:32
Avg rating:3.0/5.0
Slides: 42
Provided by: Steven512
Category:
Tags: inquiring | know | minds | want

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Inquiring minds want to know ...


1
Intro to Particle and Nuclear Physics and the
Long Island Gold Rush
Steven Manly Univ. of Rochester REU seminar June
1, 2006 steven.manly_at_rochester.edu
2
Inquiring minds want to know ...
Yo! What holds it together?
3
(No Transcript)
4
Fermi National Accelerator Laboratory (near
Chicago)
5
CDF
Minos
6
Stanford Linear Accelerator Center
7
Event display from the SLD experiment at SLAC
8
What forces exist in nature?
What is a force?
How do they interact?
How do forces change with energy or temperature?
How has the universe evolved?
9
(No Transcript)
10
(No Transcript)
11
leptons
quarks
Gauge bosons
u c t d s b
e ? ? ?e ?? ??
e
W, Z, g, ? G
?
g
Strong interaction
Hadrons
Baryons qqq
p uud n udd
nuclei
atoms
Electromagnetic interaction
12
Mini-Ph.D. Quantum Mechanics 101
Lesson 1
Size actually does matter.
13
Determine the postion and velocity of a car no
problem
14
Determine the postion and velocity of a small
particle no problem
15
Problem! Heisenberg uncertainty principle
Cannot have perfect knowledge of both the
position and velocity
Heisenberg
16
The fundamental nature of forces virtual
particles
?E?t ? h Heisenberg
E mc2 Einstein
17
The Vacuum
ee-
ee-
ee-
ee-
ee-
-R. Kolb
Much ado about NOTHING Nothing is
something Nothing has energy Nothing interacts
with something
ee-
ee-
ee-
ee-
ee-
ee-
ee-
18
A contribution to mass at the quantum level
Strongly interacting particles interact with the
vacuum condensate which can make them much
heavier than the constituent quark masses.
19
-MSSL astrophysics group
20
BANG!
TIME
21
Very hot, dense primordial soup of fundamental
particles
22
At 0.000001 second after bang, protons and
neutrons form
23
At 3 minutes, light nuclei form
24
At 300,000 years, t 3000 degrees, atoms form
and light streams freely
25
t13 billion years, Brittney Spears gets married
again
26
(No Transcript)
27
Quantum Chromodynamics QCD
relative strength
asymptotic freedom
Similar to QED except the gauge field carries
the charge
distance
energy density, temperature
quark
Strong color field Energy grows with separation
!!!
white ?0 (confined quarks)
Emc2 !
white proton (confined quarks)
white proton
Thanks to Mike Lisa (OSU) for parts of this
animation
28
ee- collisions
Heavy ion collisions
29
Relativistic heavy ions at Brookhaven National
Laboratory
30
Relativistic Heavy Ion Collider (RHIC)
1 km
v 0.99995?c 186,000 miles/sec
Thanks to M. Lisa for parts of this slide
31
(No Transcript)
32
One collision seen by STAR TPC
33
The PHOBOS Detector
Spectrometer
Time of Flight
Vertex
1m
Octagon
Paddle Trigger Counter
Ring Counters
Cerenkov Counter
137000 Silicon Pad Channels
34
(No Transcript)
35
Collision region is football shaped
36
Elliptic flow
37
Flow quantified
dN/d(f -YR ) N0 (1 2V1cos (f-YR) 2V2cos
(2(f-YR) ... )
38
(No Transcript)
39
Elliptic Flow at 130 GeV
Phys. Rev. Lett. 89 222301 (2002)
40
Flow vs Pt and ?
  • Hydro describes low pt vs. particle mass, fails
    at high pt and high-?

(consider velocity and early, self-quenching
asymmetry)
41
Places to learn more Particle and nuclear
physics links
http//pdg.lbl.gov http//particleadventure.org
http//www.slac.stanford.edu/gen/edu/aboutslac.ht
ml http//www.bnl.gov/bnlweb/sciindex.html
http//www.bnl.gov/rhic/ http//public.web.cern.
ch/public/ http//www.fnal.gov/
http//www.er.doe.gov/production/henp/np/index.ht
ml http//www.science.doe.gov/hep/index.shtm
About PowerShow.com