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Nucleon Form Factors at high q2 within constituent quark models

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Nucleon Form Factors at high q2 within constituent quark models

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dc.contributor.author	Desplanques, B.
dc.contributor.author	Silvestre-Brac, B.
dc.contributor.author	Cano Vargas, Florencio
dc.contributor.author	González Marhuenda, Pedro
dc.contributor.author	Noguera Puchol, Santiago
dc.date.accessioned	2014-03-25T11:59:04Z
dc.date.available	2014-03-25T11:59:04Z
dc.date.issued	2000
dc.identifier.citation	Desplanques, B. Silvestre-Brac, B. Cano, F. González Marhuenda, Pedro Noguera Puchol, Santiago 2000 Nucleon Form Factors at high q2 within constituent quark models Few-Body Systems 29 4 169 222
dc.identifier.uri	http://hdl.handle.net/10550/33680
dc.description.abstract	The nucleon form factors are calculated using a non-relativistic description in terms of constituent quarks. The emphasis is put on present numerical methods used to solve the three-body problem in order to reliably predict the expected asymptotic behaviour of form factors. Nucleon wave functions obtained in the hyperspherical formalism or employing Faddeev equations have been considered. While a q(-8) behaviour is expected at high q for a quark-quark force behaving like 1/r at short distances, it is found that the hypercentral approximation in the hyperspherical formalism (K = 0) leads to a q(-7) behaviour. An infinite set of waves would be required to get the correct behaviour. Solutions of the Faddeev equations lead to the q(-8) behaviour. The coefficient of the corresponding term, however, depends on the number of pal-tial waves retained in the Faddeev amplitude. The convergence to the asymptotic behaviour has also been studied. Approximate expressions characterizing this one have been derived. From the comparison with the most complete Faddeev calculation, a validity range is inferred for restricted calculations.
dc.relation.ispartof	Few-Body Systems, 2000, vol. 29, num. 4, p. 169-222
dc.subject	Física nuclear
dc.title	Nucleon Form Factors at high q2 within constituent quark models
dc.type	journal article	es_ES
dc.date.updated	2014-03-25T11:59:04Z
dc.identifier.doi	10.1007/s006010070001
dc.identifier.idgrec	080346
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/s006010070001