Zobrazeno 1 - 10
of 1 287
pro vyhledávání: '"Xie, Ju"'
The Weinberg compositeness criterion dictates that a pure shallow bound state is characterized by a large scattering length $a_0\gg\mathcal{O}(1/\beta)$ and a positive effective range $r_0$ that naturally scales to the size of $\mathcal{O}(1/\beta)$,
Externí odkaz:
http://arxiv.org/abs/2410.21891
Autor:
Duan, Man-Yu, Lyu, Wen-Tao, Xiao, Chu-Wen, Wang, En, Xie, Ju-Jun, Chen, Dian-Yong, Oset, Eulogio
We study from the theoretical point of view the $\Lambda_c^+\to \pi^+ \eta \Lambda$ reaction, recently measured by the Belle and BESIII Collaborations, where clear signals are observed for $a_0(980)$, $\Lambda(1670)$, and $\Sigma(1385)$ excitation. B
Externí odkaz:
http://arxiv.org/abs/2410.16078
We perform a theoretical study on the spectrum of the low-lying hidden-bottom ($q\bar{q}b\bar{b}$ with $q=$ $u$, $d$ and $s$) and double-bottom ($q\bar{q}bb$) tetraquark states within a nonrelativistic quark model, in which the instanton-induced inte
Externí odkaz:
http://arxiv.org/abs/2410.12147
The two-body strong decays of the $f_0(1500)$, $f_0(1710)$, $a_0(1710)$, $f_2(1270)$, $f_2'(1525)$, and $K_2^*(1430)$ resonances are investigated, assuming them as dynamically generated states of two vector mesons via $s$-wave interactions. The parti
Externí odkaz:
http://arxiv.org/abs/2409.05302
The total cross sections of the process $e^+ e^-\to \Lambda_c^+ \bar{\Lambda}_c^-$ close to the threshold are calculated within the vector meson dominance model. It is found that the theoretical results can describe the current experimental measureme
Externí odkaz:
http://arxiv.org/abs/2407.19445
We propose a novel method to identify the two-pole structure of the $\Lambda(1405)$. The two poles owe their origin to different quark flavor irreducible representations in the meson-baryon coupled-channel interactions, thus they should be individual
Externí odkaz:
http://arxiv.org/abs/2407.13486
The Belle collaboration recently reported a promising candidate for the spin-2 $D^*\bar{D}^*$ partner of the $X(3872)$, called the $X_2$ for short, having a mass of $(4014.3 \pm 4.0 \pm 1.5)~\mathrm{MeV}$ and a width of $(4 \pm 11 \pm 6)~\mathrm{MeV}
Externí odkaz:
http://arxiv.org/abs/2407.03567
Autor:
Xie, Ju-Jun, Geng, Li-Sheng
Recently, a new excited baryon state, $\Omega(2012)$, was observed in the invariant mass spectra of $K^-\Xi^0$ and $K^0_S \Xi^-$ by the Belle Collaboration. This state has a narrow width ($\sim 6$ MeV) compared to other baryon states with a similar m
Externí odkaz:
http://arxiv.org/abs/2406.17481
Publikováno v:
Chin. Phys. Lett. 41, 101401 (2024)
Strong empirical and phenomenological indications exist for large sea-quark admixtures in the low-lying excited baryons. Investigating the low-lying excited baryon $\Sigma^*(1/2^-)$ is important to determine the nature of the low-lying excited baryon
Externí odkaz:
http://arxiv.org/abs/2406.07839
Publikováno v:
Phys. Rev. D 110, no.7, 074010 (2024)
Motivated by the recent experimental measurements, we have investigated the Cabibbo-favored process $\Lambda_c^+ \to p \bar{K}^0\eta$, where the $N(1535)$ resonance is dynamically generated from the $S$-wave pseudoscalar meson-octet baryon interactio
Externí odkaz:
http://arxiv.org/abs/2406.01209