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A $\Sigma^*$ resonance with spin-parity $J^P = 1/2^-$ and mass in the vicinity of the $\bar{K}N$ threshold has been predicted in the unitary chiral approach and inferred from the analysis of CLAS data on the $\gamma p \to K^+ \pi^0…

High Energy Physics - Phenomenology · Physics 2019-04-17 Ju-Jun Xie , Eulogio Oset

The $\Lambda(1405)$ production in p+p collisions at 3.5 GeV and K$^-$-induced reactions is discussed. The shift of the measured spectral function of the $\Lambda(1405)$ in p+p reactions does not match either theoretical calculations for p+p…

Nuclear Experiment · Physics 2015-09-30 L. Fabbietti , K. Pischicchia , A. Scordo

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 three-body decays \(\Lambda_b \to D^+ D^- \Lambda,~D^0D_s^- p,~D_s^+D_s^-\Lambda\), considering both internal and external emission mechanisms that produce various meson-baryon final states. Using a unitarized coupled-channel…

High Energy Physics - Phenomenology · Physics 2025-07-03 Jing Song , Melahat Bayar , Eulogio Oset

We show that the large corrections due to final state interactions (FSI) in the D^+\to \pi^-\pi^+\pi^+, D^+_s\to \pi^-\pi^+\pi^+, and D^+\to K^-\pi^+\pi^+ decays can be accounted for by invoking scattering amplitudes in agreement with those…

High Energy Physics - Phenomenology · Physics 2009-11-10 Jose A. Oller

We study the threshold enhancement effects of baryon-anti-baryon systems in $J/\psi$ decays at BES using parity $P$, charge conjugation $C$, and flavor SU(3) symmetries. The $P$ and $C$ symmetries restrict the $p\bar p$ in $J/\psi \to…

High Energy Physics - Phenomenology · Physics 2009-11-10 Xiao-Gang He , Xue-Qian Li , J. P. Ma

A model for the p d --> p d eta reaction published earlier, including the final state interaction (FSI) of all particles, is revisited to investigate the low energy data on this reaction. The three body problem of p-d-eta scattering in the…

Nuclear Theory · Physics 2009-11-23 N. J. Upadhyay , B. K. Jain , K. P. Khemchandani , N. G. Kelkar

An amplitude analysis of $B^-\to J/\psi\Lambda\bar{p}$ decays is performed using about 4400 signal candidates selected on a data sample of $pp$ collisions recorded at center-of-mass energies of 7, 8 and 13 TeV with the LHCb detector,…

High Energy Physics - Experiment · Physics 2024-06-13 LHCb collaboration

Recent data from experiment E97-006 at TJNAF using the 12C(e,e'p) reaction at very large missing energies and momenta are compared to a calculation of two-step rescattering. A comparison between parallel and perpendicular kinematics…

Nuclear Theory · Physics 2010-12-15 C. Barbieri , D. Rohe , I. Sick , L. Lapikas

The LHCb Collaboration has recently reported the first observation of the decay $\bar B_s^0\to \Lambda_c^+\bar\Lambda_c^-$, along with measurements of the branching fractions for both $\bar B^0\to \Lambda_c^+\bar\Lambda_c^-$ and $\bar…

High Energy Physics - Phenomenology · Physics 2026-05-19 Zhu-Ding Duan , Xiao Huang , Dong-Hao Li , Run-Hui Li , Jian-Peng Wang , Fu-Sheng Yu

Based on the scenario that a $\bar{K} N N$ bound state is generated and it eventually decays into $\Lambda p$, we calculate the cross section of the $K^{-} {}^{3} \text{He} \to \Lambda p n$ reaction, which was recently measured in the…

Nuclear Theory · Physics 2020-01-08 Takayasu Sekihara , Eulogio Oset , Angels Ramos

We investigate the joint $\Lambda \bar{\Lambda}$ decay in the reaction $e^+ e^- \rightarrow \gamma \Lambda(\rightarrow p\pi^-) \bar{\Lambda}(\rightarrow \bar{p}\pi^+)$. This reaction may provide information on the electromagnetic form…

Nuclear Theory · Physics 2013-06-04 Göran Fäldt

Inspired by the invariant mass distributions for the decays $D^{0} \rightarrow K_S^{0} \pi^{0} \eta$ and $D^{0} \rightarrow K_S^{0} \pi^{0} \pi^{0}$ reported by the BESIII Collaboration, we investigate these processes with an unified final…

High Energy Physics - Phenomenology · Physics 2026-03-18 Wei Liang , Chu-Wen Xiao , Guo-Mei Gan , Shi-Qi Zhou

In this article studies of the near threshold $pp\to ppK^+K^-$ reaction conducted with the COSY-11 and the ANKE detectors are reviewed. In particular recent investigations on the $K^+K^-$ final state interaction are revisited taking into…

Nuclear Experiment · Physics 2014-03-27 M. Silarski

We study the processes $e^+e^-\to 2(\pi^+\pi^-)\pi^0\pi^0\pi^0\gamma$ and $2(\pi^+\pi^-)\pi^0\pi^0\eta\gamma$ in which an energetic photon is radiated from the initial state. The data were collected with the \babar~ detector at SLAC. About…

High Energy Physics - Experiment · Physics 2021-10-22 The BABAR Collaboration

The significance of final-state interactions in B_d-->\pi\pi decays is phenomenologically demonstrated by taking elastic \pi\pi--\pi\pi and inelastic \pi\pi--D\bar{D} rescattering effects into consideration. We find that the present…

High Energy Physics - Phenomenology · Physics 2009-10-31 Zhi-zhong Xing

An exclusive analysis of the 4-body final states $\mathrm{\Lambda + p + \pi^{+} + K^{0}}$ and $\mathrm{\Sigma^{0} + p + \pi^{+} + K^{0}}$ measured with HADES for p+p collisions at a beam kinetic energy of 3.5 GeV is presented. The analysis…

Using 2917 $\rm{pb}^{-1}$ of data accumulated at 3.773~$\rm{GeV}$, 44.5~$\rm{pb}^{-1}$ of data accumulated at 3.65~$\rm{GeV}$ and data accumulated during a $\psi(3770)$ line-shape scan with the BESIII detector, the reaction…

High Energy Physics - Experiment · Physics 2015-06-19 BESIII Collaboration , M. Ablikim , M. N. Achasov , X. C. Ai , O. Albayrak , M. Albrecht , D. J. Ambrose , F. F. An , Q. An , J. Z. Bai , R. Baldini Ferroli , Y. Ban , J. V. Bennett , M. Bertani , J. M. Bian , E. Boger , O. Bondarenko , I. Boyko , S. Braun , R. A. Briere , H. Cai , X. Cai , O. Cakir , A. Calcaterra , G. F. Cao , S. A. Cetin , J. F. Chang , G. Chelkov , G. Chen , H. S. Chen , J. C. Chen , M. L. Chen , S. J. Chen , X. Chen , X. R. Chen , Y. B. Chen , H. P. Cheng , X. K. Chu , Y. P. Chu , D. Cronin-Hennessy , H. L. Dai , J. P. Dai , D. Dedovich , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , W. M. Ding , Y. Ding , C. Dong , J. Dong , L. Y. Dong , M. Y. Dong , S. X. Du , J. Z. Fan , J. Fang , S. S. Fang , Y. Fang , L. Fava , C. Q. Feng , C. D. Fu , O. Fuks , Q. Gao , Y. Gao , C. Geng , K. Goetzen , W. X. Gong , W. Gradl , M. Greco , M. H. Gu , Y. T. Gu , Y. H. Guan , L. B. Guo , T. Guo , Y. P. Guo , Y. L. Han , F. A. Harris , K. L. He , M. He , Z. Y. He , T. Held , Y. K. Heng , Z. L. Hou , C. Hu , H. M. Hu , J. F. Hu , T. Hu , G. M. Huang , G. S. Huang , H. P. Huang , J. S. Huang , L. Huang , X. T. Huang , Y. Huang , T. Hussain , C. S. Ji , Q. Ji , Q. P. Ji , X. B. Ji , X. L. Ji , L. L. Jiang , L. W. Jiang , X. S. Jiang , J. B. Jiao , Z. Jiao , D. P. Jin , S. Jin , T. Johansson , N. Kalantar-Nayestanaki , X. L. Kang , X. S. Kang , M. Kavatsyuk , B. Kloss , B. Kopf , M. Kornicer , W. Kuehn , A. Kupsc , W. Lai , J. S. Lange , M. Lara , P. Larin , M. Leyhe , C. H. Li , Cheng Li , Cui Li , D. Li , D. M. Li , F. Li , G. Li , H. B. Li , J. C. Li , K. Li , K. Li , Lei Li , P. R. Li , Q. J. Li , T. Li , W. D. Li , W. G. Li , X. L. Li , X. N. Li , X. Q. Li , Z. B. Li , H. Liang , Y. F. Liang , Y. T. Liang , D. X. Lin , B. J. Liu , C. L. Liu , C. X. Liu , F. H. Liu , Fang Liu , Feng Liu , H. B. Liu , H. H. Liu , H. M. Liu , J. Liu , J. P. Liu , K. Liu , K. Y. Liu , P. L. Liu , Q. Liu , S. B. Liu , X. Liu , Y. B. Liu , Z. A. Liu , Zhiqiang Liu , Zhiqing Liu , H. Loehner , X. C. Lou , G. R. Lu , H. J. Lu , H. L. Lu , J. G. Lu , X. R. Lu , Y. Lu , Y. P. Lu , C. L. Luo , M. X. Luo , T. Luo , X. L. Luo , M. Lv , F. C. Ma , H. L. Ma , Q. M. Ma , S. Ma , T. Ma , X. Y. Ma , F. E. Maas , M. Maggiora , Q. A. Malik , Y. J. Mao , Z. P. Mao , J. G. Messchendorp , J. Min , T. J. Min , R. E. Mitchell , X. H. Mo , Y. J. Mo , H. Moeini , C. Morales Morales , K. Moriya , N. Yu. Muchnoi , H. Muramatsu , Y. Nefedov , F. Nerling , I. B. Nikolaev , Z. Ning , S. Nisar , X. Y. Niu , S. L. Olsen , Q. Ouyang , S. Pacetti , M. Pelizaeus , H. P. Peng , K. Peters , J. L. Ping , R. G. Ping , R. Poling , M. Qi , S. Qian , C. F. Qiao , L. Q. Qin , N. Qin , X. S. Qin , Y. Qin , Z. H. Qin , J. F. Qiu , K. H. Rashid , C. F. Redmer , M. Ripka , G. Rong , X. D. Ruan , A. Sarantsev , K. Schoenning , S. Schumann , W. Shan , M. Shao , C. P. Shen , X. Y. Shen , H. Y. Sheng , M. R. Shepherd , W. M. Song , X. Y. Song , S. Spataro , B. Spruck , G. X. Sun , J. F. Sun , S. S. Sun , Y. J. Sun , Y. Z. Sun , Z. J. Sun , Z. T. Sun , C. J. Tang , X. Tang , I. Tapan , E. H. Thorndike , D. Toth , M. Ullrich , I. Uman , G. S. Varner , B. Wang , D. Wang , D. Y. Wang , K. Wang , L. L. Wang , L. S. Wang , M. Wang , P. Wang , P. L. Wang , Q. J. Wang , S. G. Wang , W. Wang , X. F. Wang , Y. D. Wang , Y. F. Wang , Y. Q. Wang , Z. Wang , Z. G. Wang , Z. H. Wang , Z. Y. Wang , D. H. Wei , J. B. Wei , P. Weidenkaff , S. P. Wen , M. Werner , U. Wiedner , M. Wolke , L. H. Wu , N. Wu , Z. Wu , L. G. Xia , Y. Xia , D. Xiao , Z. J. Xiao , Y. G. Xie , Q. L. Xiu , G. F. Xu , L. Xu , Q. J. Xu , Q. N. Xu , X. P. Xu , Z. Xue , L. Yan , W. B. Yan , W. C. Yan , Y. H. Yan , H. X. Yang , L. Yang , Y. Yang , Y. X. Yang , H. Ye , M. Ye , M. H. Ye , B. X. Yu , C. X. Yu , H. W. Yu , J. S. Yu , S. P. Yu , C. Z. Yuan , W. L. Yuan , Y. Yuan , A. Yuncu , A. A. Zafar , A. Zallo , S. L. Zang , Y. Zeng , B. X. Zhang , B. Y. Zhang , C. Zhang , C. B. Zhang , C. C. Zhang , D. H. Zhang , H. H. Zhang , H. Y. Zhang , J. J. Zhang , J. Q. Zhang , J. W. Zhang , J. Y. Zhang , J. Z. Zhang , S. H. Zhang , X. J. Zhang , X. Y. Zhang , Y. Zhang , Y. H. Zhang , Z. H. Zhang , Z. P. Zhang , Z. Y. Zhang , G. Zhao , J. W. Zhao , Lei Zhao , Ling Zhao , M. G. Zhao , Q. Zhao , Q. W. Zhao , S. J. Zhao , T. C. Zhao , X. H. Zhao , Y. B. Zhao , Z. G. Zhao , A. Zhemchugov , B. Zheng , J. P. Zheng , Y. H. Zheng , B. Zhong , L. Zhou , Li Zhou , X. Zhou , X. K. Zhou , X. R. Zhou , X. Y. Zhou , K. Zhu , K. J. Zhu , X. L. Zhu , Y. C. Zhu , Y. S. Zhu , Z. A. Zhu , J. Zhuang , B. S. Zou , J. H. Zou

Regarding the reaction $p \bar{p} \to \Lambda \bar{\Lambda}$, we provide a dynamical explanation focusing on its total and differential cross section based on the effective Lagrangian approach. Incorporating the $t$-channel exchange of the…

High Energy Physics - Phenomenology · Physics 2025-08-26 Hao-Nan Wang , Xing-Yi Ji , De-Min Li , Yue Ma , En Wang , Ju-Jun Xie

Recently a peak structure was observed near the $K^{-} p p$ threshold in the in-flight ${}^{3} {\rm He} (K^{-} , \, \Lambda p) n$ reaction of the E15 experiment at J-PARC, which could be a signal of a $\bar{K} N N$ bound state. In order to…

Nuclear Theory · Physics 2017-11-22 Takayasu Sekihara , Eulogio Oset , Angels Ramos
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