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A new global fit of the L(i)(r) at next-to-next-to-leading order in Chiral Perturbation Theory

Bijnens, Johan LU and Jemos, Ilaria LU (2012) In Nuclear Physics, Section B 854(3). p.631-665
Abstract (Swedish)
Abstract in Undetermined

new fit is done to obtain numerical values for the order p(4) low-energy-constants L(i)(r) in Chiral Perturbation Theory. This includes both new data and new calculated observables. We take into account masses, decay constants, K(l4), pi pi and pi K scattering lengths and slopes and the slope of the pion scalar formfactor. We compare in detail where the changes w.r.t. the 10 years old "fit 10" come from. We discuss several scenarios for estimating the order p(6) constants C(i)(r) and search for possible values of them that provide a good convergence for the ChPT series. We present two such sets. One big change is that the fits do not have the expected behaviour in the limit of large N(c) as well as... (More)
Abstract in Undetermined

new fit is done to obtain numerical values for the order p(4) low-energy-constants L(i)(r) in Chiral Perturbation Theory. This includes both new data and new calculated observables. We take into account masses, decay constants, K(l4), pi pi and pi K scattering lengths and slopes and the slope of the pion scalar formfactor. We compare in detail where the changes w.r.t. the 10 years old "fit 10" come from. We discuss several scenarios for estimating the order p(6) constants C(i)(r) and search for possible values of them that provide a good convergence for the ChPT series. We present two such sets. One big change is that the fits do not have the expected behaviour in the limit of large N(c) as well as before. (C) 2011 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section B
volume
854
issue
3
pages
631 - 665
publisher
Elsevier
external identifiers
  • wos:000298206200005
  • scopus:80054068134
ISSN
0550-3213
DOI
10.1016/j.nuclphysb.2011.09.013
language
English
LU publication?
yes
id
2d0e6a02-5d14-4a37-be0c-30bc7cd9d843 (old id 1891051)
date added to LUP
2011-05-16 11:10:10
date last changed
2017-08-13 03:56:57
@article{2d0e6a02-5d14-4a37-be0c-30bc7cd9d843,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
new fit is done to obtain numerical values for the order p(4) low-energy-constants L(i)(r) in Chiral Perturbation Theory. This includes both new data and new calculated observables. We take into account masses, decay constants, K(l4), pi pi and pi K scattering lengths and slopes and the slope of the pion scalar formfactor. We compare in detail where the changes w.r.t. the 10 years old "fit 10" come from. We discuss several scenarios for estimating the order p(6) constants C(i)(r) and search for possible values of them that provide a good convergence for the ChPT series. We present two such sets. One big change is that the fits do not have the expected behaviour in the limit of large N(c) as well as before. (C) 2011 Elsevier B.V. All rights reserved.},
  author       = {Bijnens, Johan and Jemos, Ilaria},
  issn         = {0550-3213},
  language     = {eng},
  number       = {3},
  pages        = {631--665},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section B},
  title        = {A new global fit of the L(i)(r) at next-to-next-to-leading order in Chiral Perturbation Theory},
  url          = {http://dx.doi.org/10.1016/j.nuclphysb.2011.09.013},
  volume       = {854},
  year         = {2012},
}