NAGIOS: RODERIC FUNCIONANDO

On relativistic approaches to pion self-energy in nuclear matter

Repositori DSpace/Manakin

dc.contributor.author	Leinson, L.B.
dc.contributor.author	Pérez Cañellas, Armando
dc.date.accessioned	2014-02-10T10:23:01Z
dc.date.available	2014-02-10T10:23:01Z
dc.date.issued	2004
dc.identifier.citation	Leinson, L.B. Pérez Cañellas, Armando 2004 On relativistic approaches to pion self-energy in nuclear matter European Physical Journal A 20 371 374
dc.identifier.uri	http://hdl.handle.net/10550/32829
dc.description.abstract	We argue that, in contrast to the non-relativistic approach, a relativistic evaluation of the nucleon--hole and delta-isobar--nucleon hole contributions to the pion self-energy incorporates the s-wave scattering, which requires a more accurate evaluation. Therefore relativistic approach containing only these diagrams does not describe appropriately the pion self-energy in isospin symmetric nuclear matter. We conclude that, a correct relativistic approach to the pion self-energy should involve a more sophisticated calculation in order to satisfy the known experimental results on the near-threshold behaviour of the pion-nucleon (forward) scattering amplitude.
dc.relation.ispartof	European Physical Journal A, 2004, vol. 20, p. 371-374
dc.subject	Partícules (Física nuclear)
dc.title	On relativistic approaches to pion self-energy in nuclear matter
dc.type	journal article	es_ES
dc.date.updated	2014-02-10T10:23:01Z
dc.identifier.doi	10.1140/epja/i2003-10225-9
dc.identifier.idgrec	016566
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1140/epja/i2003-10225-9