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Autor:
Huey-Wen Lin
Publikováno v:
EPJ Web of Conferences, Vol 206, p 01003 (2019)
Recently, there have been rapid developments in lattice-QCD calculations of proton structure, especially in the parton distribution functions (PDFs). We overcame a longstanding obstacle and for the first time in lattice-QCD are able to directly calcu
Autor:
Foka, Y., Ruiz De Elvira Carrascal, Jacobo, Kovalenko, V., Hoferichter, M., Brambilla, N., Kubis, B., Meißner, U.-G.
Publikováno v:
EPJ Web of Conferences, Vol 137, p 01014 (2017)
Meißner, U.-G.; Ruiz de Elvira Carrascal, Jacobo; Hoferichter, M.; Kubis, B.; Foka, Y.; Brambilla, N.; Kovalenko, V. (22 March 2017). Roy–Steiner-equation analysis of pion–nucleon scattering. EPJ web of conferences, 137(01014), 01014. EDP Sciences 10.1051/epjconf/201713701014
Meißner, U.-G.; Ruiz de Elvira Carrascal, Jacobo; Hoferichter, M.; Kubis, B.; Foka, Y.; Brambilla, N.; Kovalenko, V. (22 March 2017). Roy–Steiner-equation analysis of pion–nucleon scattering. EPJ web of conferences, 137(01014), 01014. EDP Sciences 10.1051/epjconf/201713701014
Low-energy pion–nucleon scattering is relevant for many areas in nuclear and hadronic physics, ranging from the scalar couplings of the nucleon to the long-range part of two-pion-exchange potentials and three-nucleon forces in Chiral Effective Fiel
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c5f38bef39fd3ff2f9939adc20c560b
Autor:
J. Gegelia
Publikováno v:
EPJ Web of Conferences, Vol 199, p 01005 (2019)
Recent calculations of the pion-nucleon scattering in covariant baryon chiral perturbation theory with explicit delta resonances are presented. Two-loop results of the widths of the Δ and Roper resonances are discussed in the framework of an effecti
Publikováno v:
EPJ Web of Conferences, Vol 134, p 03005 (2017)
We review the achievements of the project B.6 . Topics addressed include pion photoproduction of three-nucleon systems, electromagnetic and axial currents in chiral nuclear EFT, aspects of EFTs with spin-3/2 fields, nuclear structure and dynamics fro
Autor:
Gastão Krein
Publikováno v:
EPJ Web of Conferences, Vol 137, p 06012 (2017)
In this communication we present selected results from a recent study [N. Brambilla, G. Krein, J. Tarrus Castella and A. Vairo, Phys. Rev. D 93 , 054002 (2016)] of long-range properties of bottomonium. An analytical expression for the chromopolarizab
Autor:
Chueng-Ryong Ji
Publikováno v:
EPJ Web of Conferences, Vol 137, p 05008 (2017)
We discuss the use of light-front field theory in the descriptions of hadrons. In particular, we clarify the confusion in the prevailing notion of the equivalence between the infinite momentum frame and the light-front dynamics and the advantage of t
Autor:
Evgeny Epelbaum, Hermann Krebs, A. A. Filin, Vadim Baru, Christoph Hanhart, A. E. Kudryavtsev, Fred Myhrer
Publikováno v:
EPJ Web of Conferences, Vol 81, p 03003 (2014)
Les Ulis : EDP Sciences, The @European physical journal / Web of Conferences 81, 03003 pp. (2014). doi:10.1051/epjconf/20148103003
13th International Workshop on Meson Production, Properties and Interaction, MESON2014, Cracow, Poland, 2014-05-29-2014-06-03
The European physical journal / Web of Conferences 81, 03003 (2014). doi:10.1051/epjconf/20148103003
Les Ulis : EDP Sciences, The @European physical journal / Web of Conferences 81, 03003 pp. (2014). doi:10.1051/epjconf/20148103003
13th International Workshop on Meson Production, Properties and Interaction, MESON2014, Cracow, Poland, 2014-05-29-2014-06-03
The European physical journal / Web of Conferences 81, 03003 (2014). doi:10.1051/epjconf/20148103003
We present the results of the pion production operator calculated up-to-and- including next-to-next-to-leading order (NNLO) in chiral effective field theory. We in- clude explicit Delta degrees of freedom and demonstrate that they provide essential c
Autor:
M. Pavón Valderrama, Juan Nieves
Publikováno v:
EPJ Web of Conferences, Vol 37, p 04003 (2012)
In this contribution we consider the theoretical description of heavy mesonantimeson molecules from the effective field theory perspective. We are interested in the role of one pion exchange and heavy quark spin symmetry in the low energy description
Autor:
M. Piarulli
Publikováno v:
EPJ Web of Conferences, Vol 113, p 04022 (2016)
A coordinate-space nucleon-nucleon potential is constructed in chiral effective field theory (χ EFT) retaining pions, nucleons and Δ-isobars as explicit degrees of freedom. The calculation of the potential is carried out by including one- and two-p
Publikováno v:
EPJ Web of Conferences, Vol 3, p 04005 (2010)
The Effective Field Theory "without pions" at next-to-leading order is used to analyze universal bound state and scattering properties of the 3- and 4-nucleon system. Results of a variety of phase shift equivalent nuclear potentials are presented for