Photon-hadron Interactions

by Feynman,Richard P.

• ISBN13: 9780201360745
• ISBN10: 0201360748
• Format: Nonspecific Binding
• Copyright: 1972-01-01
• Publisher: CRC Press

Summary

In these classic lectures, Feynman analyses the theoretical questions related to electron and photon interactions at high energies. These lectures are based on a special topics course taught by Feynman at Caltech in 1971 and 1972. The material is dealt with on an advanced level and includes discussions of vector meson dominance and deep inelastic scattering. The possible consequences of the parton model are also analyzed.

Author Biography

Richard P. Feynman was raised in Far Rockaway, New York, and received his Ph.D. from Princeton. He held professorships at both Cornell and the California Institute of Technology. In 1965 he received the Nobel Prize for his work on quantum electrodynamics. He died in 1988.

Table of Contents

Editor's Foreword	v	(2)
Special Preface	vii	(1)
Vita	viii	(6)
Preface	xiv
1-5 GENERAL THEORETICAL BACKGROUND	3	(28)
First Order Coupling	5	(1)
Conservation of Current	6	(1)
2nd Order Coupling	7	(1)
Unitarity 2nd Order	8	(2)
Proof	10	(2)
End of Proof	12	(1)
Research Problem	13	(1)
Conservation of Current	14	(1)
Remark	15	(1)
Isotopic Spin, Strangeness, Generalized Currents	16	(2)
Conservation of Generalized Currents	18	(3)
Singularities on the Light Cone	21	(1)
Vacuum Expectation of V MuUpsilon(1,2)	22	(1)
e(+) + e(-) XXX Any Hadrons	23	(5)
Note: Annoying Point	28	(1)
Commutator	29	(1)
Problems	30	(1)
6-8 LOW ENERGY PHOTON REACTIONS	31	(11)
Pion Photoproduction Low Energy (0 to 2GeV)	31	(4)
Problem	35	(3)
Note	38	(4)
8-10 QUARK MODEL OF RESONANCES	42	(18)
The Quark Model	42	(2)
Note	44	(5)
Problem	49	(1)
Calculation of Matrix Elements	50	(1)
Feynman, Kislinger and Ravndal, Phys. Rev. (1971)	51	(9)
11-12 PSEUDOSCALAR MESON PHOTOPRODUCTION, HIGH ENERGY	60	(11)
Pseudoscalar Meson Photoproduction--Higher Energies	60	(1)
References	60	(11)
13-14 t-CHANNEL EXCHANGE PHENOMENA	71	(11)
t-Channel Exchange Phenomena	71	(4)
Comments	75	(1)
s-Channel Resonances	76	(2)
Veneziano Formula	78	(1)
Estimates of Coupling Constants	79	(3)
14-21 VECTOR MESONS AND VECTOR MESON DOMINANCE HYPOTHESIS	82	(32)
Properties of Vector Mesons	82	(1)
Electron Production of Vector Mesons	82	(7)
Vector Meson Dominance Model	89	(5)
Phi as ss (XXX)	94	(2)
VDM and Photon Hadron Interactions	96	(6)
Diffractive Production of Pho, Omega, Phi	102	(6)
Other Tests of VDM	108	(1)
Shadowing in Nuclei	109	(4)
To Summarize the Position of VDM	113	(1)
22-24 ELECTROMAGNETIC FORM FACTORS	114	(11)
Electromagnetic Form Factors	114	(1)
Nucleon	114	(1)
In Lab	115	(1)
Electromagnetic Form Factors (continued)	116	(2)
Pion Form Factor	118	(3)
Proton Form Factor for Positive q(2)	121	(1)
Note	122	(3)
25-26 ELECTRON-PROTON SCATTERING. DEEP INELASTIC REGION	125	(7)
Other Photon Processes for q(2) less than 0	125	(1)
Inelastic Electron Nucleon Scattering	126	(2)
Inelastic Electron Nucleon Scattering (continued)	128	(2)
Theory of the Inelastic Electron Proton Scattering	130	(2)
26-33 PARTON MODEL	132	(28)
Parton Model	132	(2)
Parton Model (continued)	134	(2)
The Wee Region	136	(4)
The Region Near x = 1	140	(3)
The Region -q(2) Large M(2)(X) Finite Resonances	143	(2)
Argument that Gamma(1) = Gamma(x)	145	(2)
General Remark about the Power Law (q(2))(-Gamma)	147	(1)
Partons as Quarks	147	(4)
Momentum Carried by the Quarks	151	(1)
Models	152	(1)
Future Tests of Charged Partons = Quarks	153	(2)
Deep Inelastic Scattering with Spin	155	(5)
34-35 TESTS OF THE PARTON MODEL	160	(7)
Angular Momentum in Parton Wave Functions	160	(1)
Other Experiments Testing Parton Idea (Drell)	160	(2)
p + p XXX Mu(+)Mu(-) + Anything (continued)	162	(1)
Electron Pair Production of Hadrons	163	(4)
36-37 INELASTIC SCATTERING AS PROPERTIES OF OPERATORS	167	(11)
Inelastic e p Scattering as Properties of Operators	167	(4)
Properties of Operators (continued)	171	(7)
38 LIGHT CONE ALGEBRA	178	(4)
Light Cone Algebra	178	(4)
39-41 PROPERTIES OF COMMUTATORS IN MOMENTUM SPACE	182	(17)
Properties of Commutators in Momentum Space	182	(3)
Region I	185	(2)
Bose or Fermi Quarks	187	(1)
Region II	188	(1)
Region III	188	(2)
Scattering in the Deser, Gilbert, Sudarshan Representation	190	(9)
42-47 ELECTROMAGNETIC SELF ENERGY	199	(22)
Electromagnetic Self Energy	199	(3)
Cottingham Formula	202	(3)
Expression for Self Energy in Terms of W Only	205	(1)
Other Electromagnetic Energies, Quark Model (continued)	206	(2)
Electromagnetic Self Mass, Quark Model (continued)	208	(3)
I = 2 Mass Differences	211	(1)
Further Comments on Electromagnetic Mass Differences	212	(3)
Compton Effect Gamma p XXX Gamma p or Gamma n XXX Gamma n	215	(2)
Compton Effect for Very Small Q, Upsilon	217	(2)
Forward Compton Scattering from Non-Relativistic Schroedinger Equation	219	(2)
48-49 OTHER TWO-CURRENT EFFECTS	221	(8)
Other Quantities Involving T Mu Upsilon	221	(4)
Other Two-Current Effects	225	(4)
50-51 HYPOTHESES IN THE PARTON MODEL	229	(8)
Hypotheses in the Parton Model	229	(1)
General Framework	230	(2)
Hypotheses in the Parton Model (continued)	232	(5)
52-54 HADRON-HADRON COLLISIONS AT EXTREME ENERGIES	237	(13)
Hadron-Hadron Collisions at Extreme Energies	237	(4)
Hadron-Hadron Collisions at Extreme Energies (continued)	241	(4)
High Energy Hadron-Hadron Collisions (continued)	245	(5)
55 FINAL HADRONIC STATES IN DEEP INELASTIC SCATTERING	250	(9)
Interaction of Partons with the Electromagnetic Field	250	(6)
Region of Finite q(2), Upsilon XXX Omicron	256	(2)
Continuity of Large q(2) and Small x Region	258	(1)
56-57 PARTONS AS QUARKS	259	(12)
Partons as Quarks	259	(4)
Partons as Quarks (continued)	263	(1)
Product Predictions	264	(7)
APPENDIX A	271	(5)
The Isospin of Quark Fragmentation Products	271	(5)
APPENDIX B	276	(3)
A Test of Partons as Quarks	276	(3)
INDEX	279