| dc.creator |
Pich, Antonio |
|
| dc.creator |
Rosell, Ignasi |
|
| dc.creator |
Sanz-Cillero, Juan José |
|
| dc.date |
2008-04-17T23:06:56Z |
|
| dc.date |
2008-04-17T23:06:56Z |
|
| dc.date |
2008-07-02 |
|
| dc.date.accessioned |
2017-01-31T01:02:29Z |
|
| dc.date.available |
2017-01-31T01:02:29Z |
|
| dc.identifier |
Journal of High Energy Physics 07: 014 (2008) |
|
| dc.identifier |
http://hdl.handle.net/10261/3638 |
|
| dc.identifier |
10.1088/1126-6708/2008/07/014 |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/10261/3638 |
|
| dc.description |
50 páginas, 3 figuras, 5 tablas.-- arXiv:0803.1567v1 |
|
| dc.description |
Using the resonance chiral theory Lagrangian, we perform a calculation of the vector and axial-vector two-point functions at the next-to-leading order (NLO) in the 1/N(C) expansion. We have analyzed these correlators within the single-resonance approximation and have also investigated the corrections induced by a second multiplet of vector and axial-vector resonance states. Imposing the correct QCD short-distance constraints, one determines the difference of the two correlators Pi(t) = Pi_VV(t)- Pi_AA(t) in terms of the pion decay constant and resonance masses. Its low momentum expansion fixes then the low-energy chiral couplings L_10 and C_87 at NLO, keeping full control of their renormalization scale dependence. At mu_0=0.77 GeV, we obtain L_10(mu_0) = (-4.4 \pm 0.9)10^{-3} and C_87^r(mu_0)=(3.1 \pm 1.1)10^{-5}. |
|
| dc.description |
This work has been supported by the Spanish Ministry of Education, under grants FPA2007-60323 and CSD2007-00042 (Consolider Project CPAN), and by the EU MRTN-CT-2006-035482 (FLAVIAnet). |
|
| dc.description |
Peer reviewed |
|
| dc.format |
476283 bytes |
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| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
Institute of Physics Publishing |
|
| dc.relation |
Preprint |
|
| dc.relation |
http://dx.doi.org/10.1088/1126-6708/2008/07/014 |
|
| dc.rights |
openAccess |
|
| dc.subject |
QCD |
|
| dc.subject |
Chiral Lagrangians |
|
| dc.subject |
1/N Expansion |
|
| dc.title |
Form-factors and current correlators: chiral couplings L_10(mu) and C_87(mu) at NLO in 1/N(C) |
|
| dc.type |
Pre-print |
|