Zobrazeno 1 - 10
of 850
pro vyhledávání: '"P, Hanhart"'
To improve the theoretical understanding of multiquark states like $Z_b(10610)$ and $Z_b(10650)$, we calculate the heavy-meson heavy-(anti)meson scattering potential up to next-to-leading order, $O(Q^2)$, within chiral effective field theory ($\chi$E
Externí odkaz:
http://arxiv.org/abs/2411.13303
In a recent paper, Phys. Rev. Lett. {\bf 126}, 132001 (2021), the LHCb data on the di-$J/\psi$ production in proton-proton collisions were analysed in a coupled-channel framework based on double-vector-charmonium channels. This investigation identifi
Externí odkaz:
http://arxiv.org/abs/2411.12062
Pion-kaon ($\pi K$) final states, often appearing in heavy-particle decays at the precision frontier, are important for Standard-Model tests, to describe crossed channels with exotic states, and for spectroscopy of excited kaon resonances. We constru
Externí odkaz:
http://arxiv.org/abs/2410.21883
Autor:
Dias, Jorgivan Morais, Ji, Teng, Dong, Xiang-Kun, Guo, Feng-Kun, Hanhart, Christoph, Meißner, Ulf-G., Zhang, Yu, Zhang, Zhen-Hua
We analyze the latest LHCb data on the $\pi^+\pi^-$ spectrum in the isospin-violating $X(3872)\to J/\psi \pi^+\pi^-$ decay, based on dispersion theory to deal with the $\pi\pi$ final state interactions. Additionally, the isospin breaking effects are
Externí odkaz:
http://arxiv.org/abs/2409.13245
Autor:
Achenbach, P., Aoki, K., Aoki, S., Curceanu, C., Diehl, S., Doi, T., Endo, M., Fujita, M., Fukuda, T., Garcia-Tecocoatzi, H., Geng, L. S., Gunji, T., Hanhart, C., Harada, M., Harada, T., Hayakawa, S., He, B. R., Hiyama, E., Honda, R., Ichikawa, Y., Isaka, M., Jido, D., Jinno, A., Kamada, K., Kamiya, Y., Kong, Y. K., Liu, Z. W., Lu, J. X., Miwa, K., Mizutani, K., Murakami, K., Muto, R., Murase, K., Nagao, S., Nanamura, T., Nanjo, H., Nara, Y., Ohnishi, A., Qiu, J. W., Sakaguchi, A., Sakuma, F., Santopinto, E., Scordo, A., Sekihara, T., Seong, C., Shevchenko, N. V., Stone, J. R., Strakovsky, I., Suzuki, K., Takahashi, H., Takizawa, M., Tamura, H., Tomida, N., Umeya, A., Doce, O. Vázquez, Yamagata-Sekihara, J., Yamamoto, T. O., Xiao, Y., Yin, Z., Yu, Z., Zou, B. S.
The mini proceedings of the "Fourth International Workshop on the Extension Project for the J-PARC Hadron Experimental Facility (HEF-ex 2024) [https://kds.kek.jp/event/46965]" held at J-PARC, February 19-21, 2024, are presented. The workshop was devo
Externí odkaz:
http://arxiv.org/abs/2409.00366
Autor:
Abolnikov, Michael, Baru, Vadim, Epelbaum, Evgeny, Filin, Arseniy A., Hanhart, Christoph, Meng, Lu
We employ a chiral effective field theory-based approach to connect $DD^*$ scattering observables at the physical and variable pion masses accessible in lattice QCD simulations. We incorporate all relevant scales associated with three-body $DD\pi$ dy
Externí odkaz:
http://arxiv.org/abs/2407.04649
Publikováno v:
Phys. Rev. D 109, L111501 (2024)
We demonstrate that the dip observed near the total energy of 3872 MeV in the recent cross section data from the BESIII Collaboration for $e^+e^-\to J/\psi\pi^+\pi^- $ admits a natural explanation as a coupled-channel effect: it is a consequence of u
Externí odkaz:
http://arxiv.org/abs/2404.12003
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
Publikováno v:
Eur. Phys. J. C 84 (2024) 599
Resonances are uniquely characterized by their complex pole locations and the corresponding residues. In practice, however, resonances are typically identified experimentally as structures in invariant mass distributions, with branching fractions of
Externí odkaz:
http://arxiv.org/abs/2403.15539
In recent years many vector charmonium(-like) states were reported by different electron-positron collider experiments above $4.2$ GeV. However, so far, there not only exists sizable tension in the parameters of those states, but there is also no con
Externí odkaz:
http://arxiv.org/abs/2402.03057