Study of scale invariance in a Bethe-Salpeter model

Biswas, S. N. ; Rai Choudhury, S. ; Saxena, R. P. (1970) Study of scale invariance in a Bethe-Salpeter model Nuclear Physics B, 21 (2). pp. 606-614. ISSN 0550-3213

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We study the scale invariance of the electroproduction structure functions W1(q2, v) and vW2(q2, v) in the limit q2→ ∞. Our model involves charged scalar particles φ, interacting minimally with the electromagnetic field and also with a massless scalar field χ via an interaction of the form g φ2χ. The forward Compton scattering amplitude is then studied in the ladder approximation with the ladder rungs made up of the particles χ. We obtain a non-trivial scaling law for vW2 but W1 goes to zero in the limit q2→ ∞.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:38709
Deposited On:03 May 2011 09:28
Last Modified:18 May 2011 08:37

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