Zobrazeno 1 - 10
of 20 578
pro vyhledávání: '"isovector"'
The implications of including the scalar isovector $\delta$-meson in a relativistic mean-field description of nuclear matter are discussed. A Bayesian inference approach is used to determine the parameters that define the isovector properties of the
Externí odkaz:
http://arxiv.org/abs/2412.04946
Autor:
Tsuji, Ryutaro, Aoki, Yasumichi, Ishikawa, Ken-Ichi, Kuramashi, Yoshinobu, Sasaki, Shoichi, Sato, Kohei, Shintani, Eigo, Watanabe, Hiromasa, Yamazaki, Takeshi
We present the results for the nucleon axial-vector, induced pseudoscalar and pion-nucleon couplings obtained from 2+1 flavor lattice QCD at the physical point with a large spatial extent of about 10 fm. Our calculations are performed with the PACS10
Externí odkaz:
http://arxiv.org/abs/2411.16784
Different from the previous treatment in a two-body framework, we introduce the dimeson distribution amplitudes (DAs) to describe the strong dynamics between the S-wave resonances $a_0(980, 1450)$ and the $K\bar K (\pi\eta)$ pair, where the Gegenbaue
Externí odkaz:
http://arxiv.org/abs/2411.03968
The precise determination of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements is very important, because it could be a clue to new physics beyond Standard Theory. This is particular true of $V_{ud}$, because it is the main contribution to the unit
Externí odkaz:
http://arxiv.org/abs/2409.14764
We investigate the isovector component in the phenomenological mean field model of nuclei. Lane's isospin dependence, initially proposed for the nuclear optical potential, is reexamined within the context of bound states using the Woods-Saxon potenti
Externí odkaz:
http://arxiv.org/abs/2408.12794
Autor:
An, Di, Leupold, Stefan
Dispersion theory is used to provide a model-independent low-energy representation of the three electromagnetic isovector transition form factors $N^{*}(1520)\to N$. At low energies the virtual photon couples dominantly to a pion pair. Taking the ver
Externí odkaz:
http://arxiv.org/abs/2406.15115
The recent PREX-2 and CREX data on the model-independent extraction of the charge-weak form factor difference $\Delta F_{\rm CW}$ in $^{208}$Pb and $^{48}$Ca challenge modern nuclear energy density functionals (EDFs) as well as our present understand
Externí odkaz:
http://arxiv.org/abs/2406.03844
Autor:
Bhattacharya, Tanmoy, Cirigliano, Vincenzo, Gupta, Rajan, Mereghetti, Emanuele, Yoo, Jun-Sik, Yoon, Boram
We present results from our lattice QCD study of the contribution of the isovector quark cEDM (qcEDM) operator to the neutron EDM. The calculation was carried out on four 2+1+1-flavor highly improved staggered quark ensembles (provided to us by the M
Externí odkaz:
http://arxiv.org/abs/2404.13516
Autor:
Zhang, Zhen-Hua, Ji, Teng, Dong, Xiang-Kun, Guo, Feng-Kun, Hanhart, Christoph, Meißner, Ulf-G., Rusetsky, Akaki
Publikováno v:
JHEP 08 (2024) 130
Using chiral effective field theory, we predict that there must be isovector charmonium-like $D\bar D^*$ hadronic molecules with $J^{PC}=1^{++}$ denoted as $W_{c1}$. The inputs are the properties of the $X(3872)$, including its mass and the ratio of
Externí odkaz:
http://arxiv.org/abs/2404.11215
Autor:
Kleemann, J., Pietralla, N., Friman-Gayer, U., Isaak, J., Papst, O., Prifti, K., Werner, V., Ayangeakaa, A. D., Beck, T., Colò, G., Cortés, M. L., Finch, S. W., Fulghieri, M., Gribble, D., Ide, K. E., James, X. K. -H., Janssens, R. V. F., Johnson, S. R., Koseoglou, P., Krishichayan, Savran, D., Tornow, W.
The $\gamma$ decays of the Isovector Giant Dipole Resonance (GDR) of the deformed nucleus $^{154}$Sm from $2^+_1$-Smekal-Raman and elastic scattering were measured using linearly polarized, quasi-monochromatic photon beams. The two scattering process
Externí odkaz:
http://arxiv.org/abs/2406.19695