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We study the non-mesonic weak decay of the doubly-strange hypernucleus $^{\Lambda\Lambda}_6$He within a model which considers the exchange of pseudoscalar and vector mesons. Special attention is paid into quantifying the strong interaction…

核理论 · 物理学 2018-09-12 Jordi Maneu Victoria , Assumpta Parreño , Àngels Ramos

We investigate the structure and formation of charmed meson--nucleus systems, with the aim of understanding the charmed meson--nucleon interactions and the properties of the charmed mesons in the nuclear medium. The $\bar{D}$ mesic nuclei…

核理论 · 物理学 2016-02-17 J. Yamagata-Sekihara , C. Garcia-Recio , J. Nieves , L. L. Salcedo , L. Tolos

The existence of near-threshold charmed baryon $\Lambda_c(2595)^+$ implies that the pion and the lightest, isospin-$1$ charmed baryon $\Sigma_c$ interact very strongly at extremely low energies. Using the two-flavor version of heavy hadron…

核理论 · 物理学 2017-04-25 Bingwei Long

Several aspects about $\Lambda$-hypernuclei in the relativistic mean field theory, including the effective $\Lambda$-nucleon coupling strengths based on the successful effective nucleon-nucleon interaction PK1, hypernuclear magnetic moment…

核理论 · 物理学 2011-05-04 Chunyan Song , Jiangming Yao , Hongfeng Lv , Jie Meng

We use the Field Correlator Method in QCD to calculate the masses of $\Sigma_c$, $\Xi_c$ and recently observed $\Sigma_b$, $\Xi_b$ baryons and their orbital excitations.

高能物理 - 唯象学 · 物理学 2009-04-17 I. M. Narodetskii , M. A. Trusov , A. I. Veselov

The energy and the angular dependence of the associative vector charmed ${D^*}$-meson photoproduction, $\gamma+N\to {\cal B}_c+ \overline{D^*}$, with ${\cal B}_c=\Lambda_c$ or $\Sigma_c$, has been predicted in framework of pseudoscalar…

高能物理 - 唯象学 · 物理学 2009-11-07 Michail P. Rekalo , Egle Tomasi-Gustafsson

We study the production of charmed baryons in the antiproton-proton and antiproton-nucleus interactions within a fully covariant model that is based on an effective Lagrangian approach. The baryon production proceeds via the $t$-channel…

高能物理 - 唯象学 · 物理学 2018-03-09 R. Shyam , K. Tsushima

Based on relativistic mean field (RMF) models, we study finite $\Lambda$-hypernuclei and massive neutron stars. The effective $N$-$N$ interactions PK1 and TM1 are adopted, while the $N$-$\Lambda$ interactions are constrained by reproducing…

核理论 · 物理学 2018-03-14 Ting-Ting Sun , Cheng-Jun Xia , Shi-Sheng Zhang , M. S. Smith

We present our recent study on baryon-baryon ($BB$) interactions from lattice QCD with almost physical quark masses corresponding to $(m_\pi,m_K)\approx(146,525)$ MeV and large volume $(La)^4=(96a)^4\approx$ (8.1 fm)$^4$. In order to…

The production of baryons containing two charmed quarks Xi_cc in hadronic interactions at high energies and large transverse momenta is considered. It is supposed, that Xi_cc-baryon is formed during a non-perturbative fragmentation of the…

高能物理 - 唯象学 · 物理学 2009-11-07 D. A. Gunter , V. A. Saleev

In this work, we employ the heavy hadron chiral perturbation theory (HHChPT) to calculate the $\Sigma_c\bar{D}^{(*)}$ potentials to the next-to-leading order. The contact, the one-pion exchange and the two-pion exchange interactions are…

高能物理 - 唯象学 · 物理学 2019-08-07 Lu Meng , Bo Wang , Guang-Juan Wang , Shi-Lin Zhu

Using the topological-diagram approach based on $SU(3)$ flavor symmetry, we investigate two-body $\Lambda_c^+\to {\bf B}S$ decays, where ${\bf B}$ denotes the final-state baryon and $S$ refers to a light scalar meson, such as…

高能物理 - 唯象学 · 物理学 2026-03-24 Y. L. Wang , Y. K. Hsiao

The discovery of $\Xi_{cc}^{++}$ by the LHCb Collaboration triggers predictions of more doubly charmed baryons. By taking into account both the $P$-wave excitations between the two charm quarks and the scattering of light pseudoscalar…

高能物理 - 唯象学 · 物理学 2018-11-28 Mao-Jun Yan , Xiao-Hai Liu , Sergi Gonzàlez-Solís , Feng-Kun Guo , Christoph Hanhart , Ulf-G. Meißner , Bing-Song Zou

Very recently, the LHCb collaboration has observed in the final state $\Lambda_c^+ K^-\pi^+\pi^+$ a resonant structure that is identified as the doubly-charmed baryon $\Xi_{cc}^{++}$. Inspired by this observation, we investigate the weak…

高能物理 - 唯象学 · 物理学 2017-11-27 Wei Wang , Fu-Sheng Yu , Zhen-Xing Zhao

The strong and radiative decays of the low-lying $S$- and $P$-wave $\Lambda_{c(b)}$, $\Sigma_{c(b)}$, $\Xi_{c(b)}$, $\Xi_{c(b)}'$ and $\Omega_{c(b)}$ baryons are systematically studied in a constituent quark model. We find that the…

高能物理 - 唯象学 · 物理学 2018-01-17 Kai-Lei Wang , Ya-Xiong Yao , Xian-Hui Zhong , Qiang Zhao

The nature of the recently discovered $Z_c$ and $Z_b$ structures is intriguing. Their charge forces its minimal quark content to be $Q\bar Q q\bar q$ (where $Q=\{c,b\}$ and $q=\{u,d\}$). In this work we perform a molecular coupled-channels…

高能物理 - 唯象学 · 物理学 2019-10-16 Pablo G. Ortega , Jorge Segovia , David R. Entem , Francisco Fernández

We study the production of charmed hadrons $D^{0}$ and $\Lambda_c^+$ in relativistic heavy-ion collisions using an improved quark coalescence model. In particular, we extend the usual coalescence model by letting a produced hadron to have…

核理论 · 物理学 2020-04-21 Sungtae Cho , Kai-Jia Sun , Che Ming Ko , Su Houng Lee , Yongseok Oh

The Quark-Meson Coupling (QMC) model establishes a self-consistent relationship between the quark structure dynamics of a nucleon and the relativistic mean fields that arise within the nuclear medium. The model has been successful in…

We study baryon resonances with heavy flavor in a molecular approach, thus as dynamically generated by meson-baryon scattering. This is accomplished by using a unitary coupled-channel model taking, as bare interaction, the extension to four…

高能物理 - 唯象学 · 物理学 2014-03-19 Olena Romanets , Carmen Garcia-Recio , Juan Nieves , Lorenzo Luis Salcedo , Laura Tolos

In heavy quark limit, the lowest-lying charmed baryons with two light quarks can form an SU(3) triplet and sextet. The $\Xi_c$ in the SU(3) triplet and $\Xi_c'$ in the sextet have the same $J^{PC}$ quantum number and can mix due to the…

高能物理 - 格点 · 物理学 2023-05-31 Hang Liu , Liuming Liu , Peng Sun , Wei Sun , Jin-Xin Tan , Wei Wang , Yi-Bo Yang , Qi-An Zhang