| 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 |
|