أعرض تسجيلة المادة بشكل مبسط

dc.creator Mathieu, Vincent
dc.creator Portolés, Jorge
dc.date 2008-01-25T09:29:35Z
dc.date 2008-01-25T09:29:35Z
dc.date 2007
dc.date.accessioned 2017-01-31T00:59:46Z
dc.date.available 2017-01-31T00:59:46Z
dc.identifier Eur. Phys. J. C52 (2007) 325-338
dc.identifier http://hdl.handle.net/10261/2736
dc.identifier 10.1140/epjc/s10052-007-0393-5
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2736
dc.description We perform an analysis of the form factors that rule the structure-dependent amplitude in radiative pion decay. The resonance contributions to pion -> e nu_e gamma decays are computed through the proper construction of the vector and axial-vector form factors by setting the QCD driven asymptotic properties of the three-point Green functions VVP and VAP, and by demanding the smoothening of the form factors at high transfer of momentum. A comparison between theoretical and experimental determination of the form factors is also carried out. We also consider and evaluate the role played by a non-standard tensor form factor. We conclude that, at present and due to the hadronic uncertainties, the search for new physics in this process is not feasible.
dc.description Ministerio de Educación y Ciencia, FPA2004-00996. Generalitat Valenciana, GVACOMP2007-156. European Commission, EU MRTN-CT-2006-035482 (FLAVIAnet)-
dc.description Peer reviewed
dc.format 544210 bytes
dc.format application/pdf
dc.language eng
dc.publisher Springer
dc.rights openAccess
dc.subject QCD
dc.subject Chiral Lagrangians
dc.subject Radiative pion decay
dc.title Form factors in the radiative pion decay
dc.type Artículo


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أعرض تسجيلة المادة بشكل مبسط