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The attractive interaction between $J/\psi$ and $\psi(3770)$ has to be strong enough to form the molecular resonant structure, i.e., $X(6900)$. We argue that since $\psi(3770)$ decays predominantly into a $D\bar D$ pair, the interactions…

High Energy Physics - Phenomenology · Physics 2023-12-19 Ye Lu , Chang Chen , Guang-you Qin , Han-Qing Zheng

In this paper, we first review the theoretical and experimental studies of the process $\Lambda_c^+ \to \pi^+ \eta \Lambda$. Motivated by the recent BESIII and Belle measurements, we have conducted a theoretical study of the process…

High Energy Physics - Phenomenology · Physics 2025-08-05 En Wang , Wen-Tao Lyu , Man-Yu Duan , Chu-Wen Xiao , Dian-Yong Chen , Ju-Jun Xie , Eulogio Oset

The near-threshold enhancement in the ppbar invariant mass spectrum from the B^+ -> K^+ ppbar decay reported recently by the BaBar Collaboration is studied within the J\"ulich NNbar model. We illustrate that the invariant mass dependence of…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Haidenbauer , Ulf-G. Meißner , A. Sibirtsev

We study the $\Lambda_{b}\to\Lambda_{c}\bar{D}^{0}K^{-}$ and $\Lambda_{b}\to \Lambda_{c}D^{-}\bar{K}^{0}$ decays which proceed via a Cabibbo and $N_c$ favored process of external emission, and we determine the $\bar{D}^{0}K^{-}$ and…

High Energy Physics - Phenomenology · Physics 2025-06-05 Hai-Peng Li , Wei-Hong Liang , Chu-Wen Xiao , Ju-Jun Xie , Eulogio Oset

We have studied the $N^*(2120)$, $\Delta^*(1940)$, and the possible $\Sigma^*(1380)$ resonances in the $\gamma p \to K^+ \Lambda(1520)$, $pp \to n K^+ \Sigma(1385)$, and $\Lambda p \to \Lambda p \pi^0$ reactions within the resonance model…

Nuclear Theory · Physics 2016-06-22 Ju-Jun Xie , En Wang , Jia-Jun Wu

We estimate the high-energy behavior of the $\Theta^+$ and $\Lambda(1520)$ production cross sections in inclusive $pp$ collisions using the $K$ exchange diagram. We show that the cross section of the $\Theta^+$-production is suppressed…

High Energy Physics - Phenomenology · Physics 2007-05-23 I. M. Narodetskii , M. A. Trusov , A. I. Veselov

We study for the first time the $p\Sigma^-\to K^-d$ and $K^-d\to p\Sigma^-$ reactions close to threshold and show that they are driven by a triangle mechanism, with the $\Lambda(1405)$, a proton and a neutron as intermediate states, which…

Nuclear Theory · Physics 2022-11-30 Albert Feijoo , Raquel Molina , Lian Rong Dai , Eulogio Oset

We study the charmless decays B to Lambda Lambdabar h, where h stands for pi^+, K^+,K^0,K^{*+}, or K^{*0}, using a 605 fb^{-1} data sample collected at the Upsilon(4S)resonance with the Belle detector at the KEKB asymmetric energy e^+ e^-…

High Energy Physics - Experiment · Physics 2009-11-13 Y. -W. Chang , M. -Z. Wang

Recently, the Belle and LHCb Collaborations have measured the $\Lambda^+_c \to p K^- \pi^+$ decay and reported the $p K^-$ invariant mass distribution, which shows a clear cusp structure around the $\eta \Lambda$ threshold. In this work, we…

High Energy Physics - Phenomenology · Physics 2024-12-25 Sheng-Chao Zhang , Man-Yu Duan , Wen-Tao Lyu , Guan-Ying Wang , Jing-Yu Zhu , En Wang

We study the decay $\Lambda_c^+ \to \Lambda \pi^+ \pi^+ \pi^-$, focusing on the production of the $\Sigma^*(1430)$ resonance observed by the Belle Collaboration. Interpreted as a dynamically generated state from meson-baryon interactions in…

High Energy Physics - Phenomenology · Physics 2025-05-29 Yi-Yao Li , Jing Song , Eulogio Oset , Wei-Hong Liang , Raquel Molina

We have studied the strangeness changing antineutrino induced reactions $\bar{\nu}_{l} p \rightarrow l^+ \phi B $, with $\phi B = K^-p$, $\bar{K}^0n$, $\pi^0\Lambda$, $\pi^0\Sigma^0$, $\eta\Lambda$, $\eta\Sigma^0$, $\pi^+\Sigma^-$,…

High Energy Physics - Phenomenology · Physics 2015-04-16 Xiulei Ren , E. Oset , L. Alvarez-Ruso , M. J. Vicente Vacas

We analyze the electromagnetic production of K^+Lambda and K^0Lambda near their production thresholds by using isobar models. In the K^+Lambda channel we show that the model can nicely describe the available experimental data. In the…

High Energy Physics - Phenomenology · Physics 2015-05-27 T. Mart

We investigate the nature of the near-threshold enhancement in the ppbar invariant mass spectrum of the reaction J/Psi -> gamma ppbar reported recently by the BES Collaboration. Using the Juelich NNbar model we show that the mass dependence…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Sibirtsev , J. Haidenbauer , S. Krewald , Ulf-G. Meißner , A. W. Thomas

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…

High Energy Physics - Phenomenology · Physics 2024-10-22 Ying Li , Si-Wei Liu , En Wang , De-Min Li , Li-Sheng Geng , Ju-Jun Xie

We present a theoretical study of $\Xi^*(1690)$ resonance in the $\Lambda_c^+ \to \Lambda K^+ \bar{K}^0$ decay, where the weak interaction part proceeds through the Cabibbo-favored process $c \to s + u\bar{d}$. Next, the intermediate two…

High Energy Physics - Phenomenology · Physics 2023-07-19 Si-Wei Liu , Qing-Hua Shen , Ju-Jun Xie

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 $\Sigma(1385)$…

High Energy Physics - Phenomenology · Physics 2024-10-23 Man-Yu Duan , Wen-Tao Lyu , Chu-Wen Xiao , En Wang , Ju-Jun Xie , Dian-Yong Chen , Eulogio Oset

The high-precision cross-section data for the reaction $\gamma p \to K^{*+}\Lambda$ reported by the CLAS Collaboration at the Thomas Jefferson National Accelerator Facility have been analyzed based on an effective Lagrangian approach in the…

High Energy Physics - Phenomenology · Physics 2017-09-27 A. C. Wang , W. L. Wang , F. Huang , H. Haberzettl , K. Nakayama

Roles of the $\Delta (1232)$, ${N}^{*}(1520)$, and ${N}^{*}(1650)$ resonances in the $\gamma p\to{\pi }^{0}{\pi }^{0}p $ reaction near threshold is investigated within an effective Lagrangian approach. We have calculated the differential…

High Energy Physics - Phenomenology · Physics 2025-01-28 Meng-Yuan Dai , Si-Wei Liu , Cheng Chen , De-Min Li , En Wang , Ju-Jun Xie

The nonleptonic weak decay of $\Lambda^+_c \to \bar{K}^0 \eta p$ is analyzed from the viewpoint of probing the $N^*(1535)$ resonance, which has a big decay branching ratio to $\eta N$. Up to an arbitrary normalization, the invariant mass…

High Energy Physics - Phenomenology · Physics 2017-09-20 Ju-Jun Xie , Li-Sheng Geng

The total and differential cross sections for associated strangeness production in the $pp \to pK^+K^-p$ and $pp \to pK^+\pi^0\Sigma^0$ reactions have been studied in a unified approach using an effective Lagrangian model. It is assumed…

Nuclear Theory · Physics 2015-03-17 Ju-Jun Xie , Colin Wilkin
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