Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Feng-Kun Guo"'
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-40 (2021)
Journal of high energy physics 2021(8), 24 (2021). doi:10.1007/JHEP08(2021)024
Journal of High Energy Physics
Journal of high energy physics 2021(8), 24 (2021). doi:10.1007/JHEP08(2021)024
Journal of High Energy Physics
In the past, the axion-nucleon coupling has been calculated in the framework of SU(2) heavy baryon chiral perturbation theory up to third order in the chiral power counting. Here, we extend these earlier studies to the case of heavy baryon chiral per
Autor:
José Antonio Oller, Vadim Baru, Christoph Hanhart, Feng-Kun Guo, Meng-Lin Du, Ulf-G. Meißner, Qian Wang
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-50 (2021)
Journal of High Energy Physics
Journal of high energy physics 2021(8), 157 (2021). doi:10.1007/JHEP08(2021)157
Journal of High Energy Physics
Journal of high energy physics 2021(8), 157 (2021). doi:10.1007/JHEP08(2021)157
The nature of the three narrow $P_c$ states, i.e., $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$, is under intense discussion since their discovery from the updated analysis by LHCb. In this work we extend our previous coupled-channel approach [Phys. Rev.
Publikováno v:
Physical review / D 105(5), 054029 (2022). doi:10.1103/PhysRevD.105.054029
Physical Review
Physical Review
The process of pion axioproduction, $aN\to\pi N$, with an intermediate $\Delta$ resonance is analyzed using baryon chiral parturbation theory. The $\Delta$ resonance is included in two ways: First, deriving the $a\Delta N$-vertices, the axion is brou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdc5a5ae0801e6381e792db49a6cd05f
https://juser.fz-juelich.de/record/911085
https://juser.fz-juelich.de/record/911085
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-23 (2020)
Journal of high energy physics 2020(5), 1 (2020). doi:10.1007/JHEP05(2020)001
Journal of High Energy Physics
Journal of high energy physics 2020(5), 1 (2020). doi:10.1007/JHEP05(2020)001
Journal of High Energy Physics
At low energies, the strong interaction is governed by the Goldstone bosons associated with the spontaneous chiral symmetry breaking, which can be systematically described by chiral perturbation theory. In this paper, we apply this theory to study th
Publikováno v:
Physical Review Letters
Physical review letters 126(19), 192001 (2021). doi:10.1103/PhysRevLett.126.192001
Physical review letters 126(19), 192001 (2021). doi:10.1103/PhysRevLett.126.192001
The lightest charmed scalar meson is known as the $D_0^*(2300)$, which is one of the earliest new hadron resonances observed at modern $B$ factories. We show here that the parameters assigned to the lightest scalar $D$-meson are in conflict with the
Publikováno v:
Journal of High Energy Physics
Journal of high energy physics 2021(4), 86 (2021). doi:10.1007/JHEP04(2021)086
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-55 (2021)
Journal of high energy physics 2021(4), 86 (2021). doi:10.1007/JHEP04(2021)086
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-55 (2021)
We present a comprehensive analysis of form factors for two light pseudoscalar mesons induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a combination of unitarized chiral perturbation theory and dispersion r
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 4, Pp 1-16 (2019)
Journal of high energy physics 2019(4), 165 (2019). doi:10.1007/JHEP04(2019)165
Journal of High Energy Physics
Journal of high energy physics 2019(4), 165 (2019). doi:10.1007/JHEP04(2019)165
Journal of High Energy Physics
The accuracy of the lattice QCD computation of hadron-hadron scattering at low isospin depends critically on the ability to compute correlation functions with fermionic disconnected Wick contractions. This happens, for instance, in isospin $I=0$ $\pi
Autor:
Vadim Baru, Xiang-Kun Dong, Meng-Lin Du, Arseniy Filin, Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev, Juan Nieves, Qian Wang
Publikováno v:
Physics Letters
Physics letters / B 833, 137290-(2022). doi:10.1016/j.physletb.2022.137290
Physics letters / B 833, 137290-(2022). doi:10.1016/j.physletb.2022.137290
We discuss some general features of the effective range expansion, the content of its parameters with respect to the nature of the pertinent near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::664382966c49202fa66a4c098e8fdeb9
Autor:
Feng-Kun Guo, Christoph Hanhart, Igor Strakovsky, Vadim Baru, Ulf-G. Meißner, Meng-Lin Du, A. V. Nefediev
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 80, Iss 11, Pp 1-6 (2020)
The European physical journal / C 80(11), 1053 (2020). doi:10.1140/epjc/s10052-020-08620-5
European Physical Journal C: Particles and Fields, Vol 80, Iss 11, Pp 1-6 (2020)
The European physical journal / C 80(11), 1053 (2020). doi:10.1140/epjc/s10052-020-08620-5
The photoproduction of the $J/\psi$ off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the oth
Publikováno v:
The European physical journal / A 57(3), 101 (2021). doi:10.1140/epja/s10050-021-00413-y
Physical states are characterised uniquely by their pole positions and the corresponding residues. Accordingly, in those parameters also the nature of the states should be encoded. For bound states (poles on the real $s$-axis below the lowest thresho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5b882de84757b46fc22ddda497df892
http://arxiv.org/abs/2007.05329
http://arxiv.org/abs/2007.05329