Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Tim Ledwig"'
Consistency between SU(3) and SU(2) covariant baryon chiral perturbation theory for the nucleon mass
Publikováno v:
Physics Letters B, Vol 766, Iss C, Pp 325-333 (2017)
Treating the strange quark mass as a heavy scale compared to the light quark mass, we perform a matching of the nucleon mass in the SU(3) sector to the two-flavor case in covariant baryon chiral perturbation theory. The validity of the 19 low-energy
Externí odkaz:
https://doaj.org/article/e34efc683ba54f43aaabc9ed4649f053
Autor:
Hyun-Chul Kim1 hckim@inha.ac.kr, Tim Ledwig2 ledwig@kph.uni-mainz.de, Seung-il Nam3 sinam@kias.re.kr
Publikováno v:
EPJ Web of Conferences. 2012, Issue 20, p1-6. 6p.
Publikováno v:
Physical Review D. 2015. Vol. 92, № 9. P. 096004-1-096004-9
We present the calculation of the hyperon forward spin polarizability gamma0 using manifestly Lorentz covariant baryon chiral perturbation theory including the intermediate contribution of the spin 3/2 states. As at the considered order the extractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69db1a73642e1b13bd121b48ca5761c3
https://doi.org/10.22323/1.253.0128
https://doi.org/10.22323/1.253.0128
Publikováno v:
Proceedings of The 8th International Workshop on Chiral Dynamics — PoS(CD15).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0850e792b30ef74b695a6a43c8ba339c
https://doi.org/10.22323/1.253.0078
https://doi.org/10.22323/1.253.0078
Publikováno v:
Proceedings of the 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015).
The neutral pion photoproduction on the proton near threshold has a very small scattering cross section when compared to the charged channels, which in ChPT is explained by strong cancellations between the lowest order pieces. Therefore it is very se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d3672e6fae99e209c7f70f76c588db3
https://doi.org/10.7566/jpscp.10.032014
https://doi.org/10.7566/jpscp.10.032014
Publikováno v:
Proceedings of The 7th International Workshop on Chiral Dynamics — PoS(CD12).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46b02b6161e08132ff3ca016373f7e37
https://doi.org/10.22323/1.172.0081
https://doi.org/10.22323/1.172.0081
Autor:
Tim Ledwig, Hyun-Chul Kim
We investigate the transverse quark spin densities of the nucleon with the lowest moment within the framework of the SU(3) chiral quark-soliton model, emphasizing the strange quark spin density. Based on previous results of the vector and tensor form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a71760f4050de6b9e6ed01a2d8274c43
http://arxiv.org/abs/1107.4952
http://arxiv.org/abs/1107.4952
Autor:
Tim Ledwig
We investigate the self-energies of particles in an external magnetic field $B$. The dependence is generally of the type $\sqrt{P(B)}$ with $P$ a polynomial in $B$ and the participating masses. The non-analytic point depends on the mass and charge co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d601b9dd2bc0ab024d47e8376ef5ffb2
Autor:
Tim Ledwig, Antonio Silva, Hyun-Chul Kim, Atsushi Hosaka, Kanchan Khemchandani, Hideko Nagahiro, Kanabu Nawa
We report in the present talk recent results of the tensor properties of the nucleon within the framework of the chiral quark-soliton model. The tensor and anomalous tensor magnetic form factors are calculated for the momentum transfer up to $Q^{2}\l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fe7e0e84f96434c548aaac8aae87e39
Publikováno v:
Scopus-Elsevier
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66c86192aed374e9c764289081c2af31
https://doi.org/10.1142/9789814313933_0009
https://doi.org/10.1142/9789814313933_0009