1. Hadron 2005 review Rio De Janeiro Aug 05 21->26 By Su Houng Lee
Hadron 2005-review

2. Recent results from Jefferson Lab
1. Strange quarks in Nucleon: Happex
g-exchange
Z-exchange 2 e’ p g e Z u
gg = +2/3 d
gg = –1/3 s
gZ = 1–8/3 sin2qw
gZ = –1+4/3 sin2qw +
Hadron 2005-review

3. Strange quark contribution to the proton
Hadron 2005-review

4. γv 2. N-D transition form factors e’ e D(1232) N
M1, E2, C2
2. N-D transition form factors
Preliminary E1+/M1+ is in good agreement with MAID, while S1+/M1+ continues to show strong Q2 dependence.
Consistency between different data sets at low Q2 needs to be understood. Reanalysis of ELSA low Q2 points in progress.
Hadron 2005-review

5. 3. Latest on Pentaquarks Relevant Publication
A comprehensive program to search for pentaquarks in photoproduction experiments at Jeffeson Lab were approved in with the goal of confirming previous results and explore new kinematics with at least a factor 10 increase in statistics.
CLAS(d) g2
2003 Phys. Rev. Lett. 91,
SAPHIR
2003 Phys. Lett. B572, 127
NA49
2004 Phys. Rev. Lett. 92,
CLAS(p) g6
2004 Phys. Rev. Lett. 92,
Relevant Publication
g deuteron Eg ~ GeV
data taking completed in 2004
g proton Eg ~ GeV
eg deuteron Eg ~ GeV
data taking completed in 2005
Super-g proton Eg ~ 3.8 – 5.7 GeV
planned for 2006
Hadron 2005-review

6. preliminary M(nK+)(GeV)
Model-independent uppper limit 95% CL for Q+ is < 20nb.
With assumptions about the spectator, we can set a model-depe ndent upper limit to the cross section of < 4-5 nb.
Hadron 2005-review

7. Still difference between LEPS and J-Lab exits in forward direction
Hadron 2005-review

8. Charmed mesons spectroscopy chartL SQ Sq
Do* D1
In the heavy-quark limit, the heavy-quark spin SQ and the total angular momentum of the light-quark jq=L+S are conserved
PREDICTION #1: Each level is composed of a degenerate doublet of states with the same jq and total angular momentum J=jq± ½.
jq=½ states are predicted to be broad ( MeV width). PREDICTION #2: FLAVOUR SYMMETRY
THIS PARADIGMA
FALSIFIED BY BABAR
AND CLEO DISCOVERY
OF Dsj STATES.
Hadron 2005-review

9. Searches and measurements at
L=1 states at Focus (photoproduction at Tevatron) and Belle(B decay) and CDF
2. D_s states at BABAR and Belle
Hadron 2005-review

10. Hadronic Physics at Belle
Hadron 2005-review

11. Hadron 2005-review

12. Hadronic Physics at BES
Hadron 2005-review

13. Recent results on Baryon Spectroscopy
Babar, Belle
Selex
Hadron 2005-review

14. Hadron 2005-review

15. Summary Bound heavy pentaquark, unbound strange heavy pentaquarkCDF
Pentaquark search: forward direction
D states
Charomium states
5. Charmed baryon state
Hadron 2005-review