Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Nogga Andreas"'
Publikováno v:
EPJ Web of Conferences, Vol 303, p 04002 (2024)
The method and results of the first theory description of 4He Compton scattering at nuclear energies is presented, with a focus on figures. An upcoming publication [1] contains details and a comprehensive list of references.
Externí odkaz:
https://doaj.org/article/2899ee08da9249dba2d02cf354bbb86d
Autor:
Golak Jacek, Urbanevych Vitalii, Skibiński Roman, Witała Henryk, Topolnicki Kacper, Baru Vadim, Filin Arseniy A., Epelbaum Evgeny, Kamada Hiroyuki, Nogga Andreas
Publikováno v:
EPJ Web of Conferences, Vol 291, p 04006 (2024)
Abstract. The π− + 2H → n + n, π− + 3H → n + n + n, π− + 3He → n + d and π− + 3He → p + n + n capture reactions from the lowest atomic orbitals are investigated under full inclusion of final state interactions and employing the si
Externí odkaz:
https://doaj.org/article/2b46e6394e3145b1997094d8f02b2e37
A study of light $\Lambda$ hypernuclei in chiral effective field theory is presented. For the first time chiral $\Lambda$NN and $\Sigma$NN three-body forces are included consistently. The calculations are performed within the no-core shell model. Res
Externí odkaz:
http://arxiv.org/abs/2409.18577
Autor:
Le, Hoai, Haidenbauer, Johann, Kamada, Hiroyuki, Kohno, Michio, Meißner, Ulf-G., Miyagawa, Kazuya, Nogga, Andreas
Explicit expressions for the leading chiral hyperon-nucleon-nucleon three-body forces have been derived by Petschauer et al [Phys. Rev. C93.014001 (2016)]. An important prerequisite for including these three-body forces in few- and many-body calculat
Externí odkaz:
http://arxiv.org/abs/2407.02064
Autor:
Griesshammer, Harald W., Liao, Junjie, McGovern, Judith A., Nogga, Andreas, Phillips, Daniel R.
We present the first \emph{ab initio} calculation of elastic Compton scattering from 4He. It is carried out to $\mathcal{O}(e^2 \delta^3)$ [N3LO] in the $\delta$ expansion of $\chi$EFT. At this order and for this target, the only free parameters are
Externí odkaz:
http://arxiv.org/abs/2401.16995
Autor:
Griesshammer, Harald W., Liao, Junjie, McGovern, Judith A., Nogga, Andreas, Phillips, Daniel R.
The method and results of the first theory description of 4He Compton scattering at nuclear energies is presented, with a focus on figures. An upcoming publication [1] contains details and a comprehensive list of references.
Comment: 6 pages LaT
Comment: 6 pages LaT
Externí odkaz:
http://arxiv.org/abs/2401.15673
Separation energies of light $\Lambda$ hypernuclei ($A\leq 5$) and their theoretical uncertainties are investigated. Few-body calculations are performed within the Faddeev-Yakubovsky scheme and the no-core shell model. Thereby, modern and up-to-date
Externí odkaz:
http://arxiv.org/abs/2308.01756
Autor:
Golak Jacek, Skibiński Roman, Topolnicki Kacper, Witała Henryk, Grassi Alessandro, Kamada Hiroyuki, Nogga Andreas, Elisa Marcucci Laura
Publikováno v:
EPJ Web of Conferences, Vol 199, p 05005 (2019)
We investigate the π– + 2H → γ + n + n, π– + 3He → γ + 3H, π– + 3He → γ + n + d, π– + 3He → γ + n + n + p and π– + 3H → γ + n + n + n capture reactions using realistic two-nucleon and three-nucleon potentials and the sin
Externí odkaz:
https://doaj.org/article/873f83ecb26646b3955e6e2fce6d5b7e
Publikováno v:
Eur. Phys. J. A 59 (2023) 63
A hyperon-nucleon potential for the strangeness $S=-1$ sector ($\Lambda N$, $\Sigma N$) up to third order in the chiral expansion is presented. SU(3) flavor symmetry is imposed for constructing the interaction, however, the explicit SU(3) symmetry br
Externí odkaz:
http://arxiv.org/abs/2301.00722
The separation energies of the isospin triplet $^7_\Lambda\mathrm{He}$, $^7_\Lambda \mathrm{Li^{*}}$, $^7_\Lambda$Be, and the $T=1/2$ doublet $^8_\Lambda$Li, $^8_\Lambda$Be are investigated within the no-core shell model. Calculations are performed b
Externí odkaz:
http://arxiv.org/abs/2210.03387