Upload
zorion
View
37
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Lattice Q C D Studies of Pentaquarks and Exotics. Anthony G. Williams Workshop on Computational Hadron Physics, Cyprus, September 14-17, 2005. Contents. Introduction Resonance Search in Lattice Q C D Search for Spin 1/2 Pentaquarks Search for Spin 3/2 Pentaquarks - PowerPoint PPT Presentation
Citation preview
Lattice QCD Studies of
Pentaquarks and Exotics Anthony G. Williams
Workshop on Computational Hadron Physics, Cyprus, September 14-17, 2005
September 2005 Computational Hadron Physics, Cyprus
2
Contents
• Introduction
• Resonance Search in Lattice QCD
• Search for Spin 1/2 Pentaquarks
• Search for Spin 3/2 Pentaquarks
• Search for the 1-+ Exotic Meson
• Conclusions
September 2005 Computational Hadron Physics, Cyprus
3
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
4
September 2005 Computational Hadron Physics, Cyprus
5
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
6
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
7
The Pentaquark Resonance Signature in Lattice QCD
September 2005 Computational Hadron Physics, Cyprus
8
Introduction
September 2005 Computational Hadron Physics, Cyprus
9
References to work reported here
September 2005 Computational Hadron Physics, Cyprus
10
Lattice QCD Approach
September 2005 Computational Hadron Physics, Cyprus
11
September 2005 Computational Hadron Physics, Cyprus
12
Standard lattice resonance signature
September 2005 Computational Hadron Physics, Cyprus
13
Resonance signatures in Nucleon and Delta channels
September 2005 Computational Hadron Physics, Cyprus
14
Pentaquark decay channels
September 2005 Computational Hadron Physics, Cyprus
15
Spin-1/2 Pentaquark resonance results
September 2005 Computational Hadron Physics, Cyprus
16
Spin-3/2 Pentaquark resonance results
September 2005 Computational Hadron Physics, Cyprus
17
Pentaquark mass-splitting analysis
September 2005 Computational Hadron Physics, Cyprus
18
0(3/2)+ Pentaquark mass-splitting analysis
September 2005 Computational Hadron Physics, Cyprus
19
0(3/2)+ Pentaquark mass-splitting analysis
September 2005 Computational Hadron Physics, Cyprus
20
Hybrid and exotic mesons from FLIC fermions
September 2005 Computational Hadron Physics, Cyprus
21
Introduction
September 2005 Computational Hadron Physics, Cyprus
22
Meson interpolating fields
September 2005 Computational Hadron Physics, Cyprus
23
Other uses of hybrid-like interpolating fields
September 2005 Computational Hadron Physics, Cyprus
24
Results for exotics
September 2005 Computational Hadron Physics, Cyprus
25
FLIC fermions allow access to lower quark masses
September 2005 Computational Hadron Physics, Cyprus
26
Mass-splitting analysis for the 1-+ meson state
September 2005 Computational Hadron Physics, Cyprus
27
Conclusions
September 2005 Computational Hadron Physics, Cyprus
28
September 2005 Computational Hadron Physics, Cyprus
29
Intro to lattice QCD
September 2005 Computational Hadron Physics, Cyprus
30
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
31
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
32
Intro to lattice QCD (cont)
September 2005 Computational Hadron Physics, Cyprus
33
How to cut and paste into TeXPoint Displays
• Just use “copy” in whatever application you are in and then use “CTRL V” to paste into the TeXPoint Display window!
• To cut from a TexPoint display and put into the clipboard, highlight the text to be cut and then type “CTRL X”.
• To just cut without loading into clipboard, just highlight text and then use “backspace” or “delete”.
September 2005 Computational Hadron Physics, Cyprus
34
TexPoint Color testing
September 2005 Computational Hadron Physics, Cyprus
35
Next page title
• Next page text• Here is an equation:
September 2005 Computational Hadron Physics, Cyprus
36
Next page title
September 2005 Computational Hadron Physics, Cyprus
37
Another sample slide
• Another sample equation:
September 2005 Computational Hadron Physics, Cyprus
38
Another color test slide
• Testing:
September 2005 Computational Hadron Physics, Cyprus
39
Scaling behavior of quark propagator in full QCD
September 2005 Computational Hadron Physics, Cyprus
40
September 2005 Computational Hadron Physics, Cyprus
41
Extended BRST and the Landau gauge
September 2005 Computational Hadron Physics, Cyprus
42