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Vector Formfactors in Hard Pion Chiral Perturbation Theory.

Bijnens, Johan LU orcid and Jemos, Ilaria LU (2011) In Nuclear Physics, Section B 846(2). p.145-166
Abstract
We use three-flavour hard pion Chiral Perturbation Theory (HPChPT) in both the heavy meson and a relativistic formulation to calculate the chiral logarithms m(2) log (m(2)/mu(2)) contributing to the formfactors of the B-(s) -> pi, K, eta and D-(s) -> pi, K, eta transitions at momentum transfer q(2) away from the endpoint q(max)(2) = (m(B) - m(M))(2). We compare our results with CLEO D -> pi and D -> K data. We also calculate the Isgur-Wise function of the B-(s) -> D-(s) semileptonic decay away from the endpoint and the chiral logarithms for the pion and kaon electromagnetic formfactor. In two-flavour HPChPT we calculate the chiral logarithms for the pion vector and the scalar formfactors at s >> m(pi)(2). This allows... (More)
We use three-flavour hard pion Chiral Perturbation Theory (HPChPT) in both the heavy meson and a relativistic formulation to calculate the chiral logarithms m(2) log (m(2)/mu(2)) contributing to the formfactors of the B-(s) -> pi, K, eta and D-(s) -> pi, K, eta transitions at momentum transfer q(2) away from the endpoint q(max)(2) = (m(B) - m(M))(2). We compare our results with CLEO D -> pi and D -> K data. We also calculate the Isgur-Wise function of the B-(s) -> D-(s) semileptonic decay away from the endpoint and the chiral logarithms for the pion and kaon electromagnetic formfactor. In two-flavour HPChPT we calculate the chiral logarithms for the pion vector and the scalar formfactors at s >> m(pi)(2). This allows us to test hard pion ChPT using the existing two-loop calculations for these quantities. (C) 2011 Elsevier B.V. All rights reserved. (Less)
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author
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type
Contribution to journal
publication status
published
subject
keywords
Chiral Perturbation Theory, B and D meson semileptonic decays
in
Nuclear Physics, Section B
volume
846
issue
2
pages
145 - 166
publisher
North-Holland
external identifiers
  • wos:000288151900001
  • scopus:79952701690
ISSN
0550-3213
DOI
10.1016/j.nuclphysb.2010.12.012
language
English
LU publication?
yes
id
a8d72172-26aa-4d0f-8772-46d52fad3f52 (old id 1890917)
date added to LUP
2016-04-01 14:08:25
date last changed
2021-09-15 02:43:08
@article{a8d72172-26aa-4d0f-8772-46d52fad3f52,
  abstract     = {We use three-flavour hard pion Chiral Perturbation Theory (HPChPT) in both the heavy meson and a relativistic formulation to calculate the chiral logarithms m(2) log (m(2)/mu(2)) contributing to the formfactors of the B-(s) -> pi, K, eta and D-(s) -> pi, K, eta transitions at momentum transfer q(2) away from the endpoint q(max)(2) = (m(B) - m(M))(2). We compare our results with CLEO D -> pi and D -> K data. We also calculate the Isgur-Wise function of the B-(s) -> D-(s) semileptonic decay away from the endpoint and the chiral logarithms for the pion and kaon electromagnetic formfactor. In two-flavour HPChPT we calculate the chiral logarithms for the pion vector and the scalar formfactors at s >> m(pi)(2). This allows us to test hard pion ChPT using the existing two-loop calculations for these quantities. (C) 2011 Elsevier B.V. All rights reserved.},
  author       = {Bijnens, Johan and Jemos, Ilaria},
  issn         = {0550-3213},
  language     = {eng},
  number       = {2},
  pages        = {145--166},
  publisher    = {North-Holland},
  series       = {Nuclear Physics, Section B},
  title        = {Vector Formfactors in Hard Pion Chiral Perturbation Theory.},
  url          = {http://dx.doi.org/10.1016/j.nuclphysb.2010.12.012},
  doi          = {10.1016/j.nuclphysb.2010.12.012},
  volume       = {846},
  year         = {2011},
}