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Prog. Theor. Phys. Vol. 36 No. 6 (1966) pp. 1150-1153

[ Full Text PDF : FREE ACCESS (202K) ]

The Algebra of Currents and the Meson Form Factors

G. Cocho and Harun Ar-Rashid

International Atomic Energy Agency, International Centre for Theoretical Physics, Trieste, Italy

(Received June 18, 1966)

Abstract:

The equal time commutation relation for the electromagnetic current is used to derive a sum rule for the pion form factor following the covariant method of Fubini. It is shown that the inclusion of pion, ω-meson and A1-meson (1+) intermediate states gives a charge radius of the pion in agreement with the recent experimental data.


URL : http://ptp.ipap.jp/link?PTP/36/1150/
DOI : 10.1143/PTP.36.1150

[ Full Text PDF : FREE ACCESS (202K) ] Citation:

References:

  1. S. Fubini, “Equal Time Commutators and Dispersion Relations”, Preprint from the Institute for Advanced Study, Princeton (1966) to be published in Nuovo Cim.
  2. G. Kramer and K. Meetz, “Derivation of Sum Rules for Electromagnetic Isovector Form Factors”, DESY Preprint 66/8, April 1966.
  3. T. Ferbel, Phys. Lett. 21 (1966), 111[CrossRef].
  4. G. Cocho, Nuovo Cim. 42 (1966), 421.
  5. G. Furlan, R. Jengo and E. Remiddi, Phys. Lett. 20 (1966), 679[CrossRef].
  6. M. E .Nordberg, Jr. and K.F. Kinsey, Phys. Lett. 20 (1966), 692[CrossRef].

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