Quark selection principle. II. Pseudoscalar meson form factor

✍ Scribed by L.I Schiff

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 743 KB
• Volume: 63
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1016/0003-4916(71)90302-2

✦ Synopsis

The quark selection principle proposed earlier is applied to the calculation of the elastic electromagnetic form factor of a pseudoscalar meson. The Bethe-Salpeter equation is inapplicable, and it is assumed instead that the quark-antiquark wavefunction satisfies a free Dirac equation for each particle. A spatial boundary condition is applied instantaneously in the rest system, and the dependence on relative time is inferred by adapting an argument given by Wick. Initial and final states are then obtained by applying appropriate Lorentz boosts to the resulting rest-system wavefunction. It is found that the form factor falls off for large momentum transfer like l/q2.