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Related papers: Lambda-hypernuclear production in stopped (K-,pion…

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We study the hyperon-nucleus potential with distorted wave impulse wave approximation (DWIA) using Green's function method. In order to include the nucleon and hyperon potential effects in Fermi averaging, we introduce the local optimal…

Nuclear Theory · Physics 2008-11-26 Hideki Maekawa , Kohsuke Tsubakihara , Akira Ohnishi

Understanding pion production in nucleon-nucleon collisions near threshold has been a challenge for the last decades. In particular, the reaction pp -> pppi0 is highly sensitive to short-range mechanisms, because isospin conservation…

Nuclear Theory · Physics 2009-09-29 Veronica Malafaia

We study ${\Lambda}K^+$ pair production in the interaction of protons of 2.83 GeV kinetic energy with C, Cu, Ag, and Au target nuclei in the framework of the nuclear spectral function approach for incoherent primary proton--nucleon and…

Nuclear Theory · Physics 2017-11-23 E. Ya. Paryev , M. Hartmann , Yu. T. Kiselev

The neutrino induced hyperon production processes $\bar{\nu}_{e/\mu} + p \to e^+/\mu^+ + \pi + \Lambda/\Sigma$ may provide a unique clean place for studying low energy $\pi\Lambda/\Sigma$ interaction and hyperon resonances below $KN$…

High Energy Physics - Phenomenology · Physics 2015-04-14 Jia-Jun Wu , Bing-Song Zou

The characteristic and selective nature of the electro-magnetic production of Lambda-hypernuclei in exciting states is demonstrated assuming the medium-mass targets 28Si, 40Ca, and 52Cr. Formalism of DWIA is used adopting the Saclay-Lyon,…

Nuclear Theory · Physics 2007-06-27 P. Bydzovsky , M. Sotona , T. Motoba , K. Itonaga , K. Ogawa , O. Hashimoto

A model calculation for the reactions $pp\to p\Lambda K^+$ and $pp\to N\Sigma K$ near their thresholds is presented. It is argued that the experimentally observed strong suppression of $\Sigma^0$ production compared to $\Lambda$ production…

Nuclear Theory · Physics 2009-11-06 A. M. Gasparian , J. Haidenbauer , C. Hanhart , L. Kondratyuk , J. Speth

Hadron production ($\pi^\pm$, proton, $\Lambda$, $K_S^0$, $K^\pm$) in $\pi^- + \mathrm{C}$ and $\pi^- + \mathrm{W}$ collisions is investigated at an incident pion beam momentum of $1.7~\mathrm{GeV}/c$. This comprehensive set of data…

Nuclear Experiment · Physics 2023-02-21 R. Abou Yassine , J. Adamczewski-Musch , O. Arnold , E. T. Atomssa , M. Becker , C. Behnke , J. C. Berger-Chen , A. Blanco , C. Blume , M. Böhmer , L. Chlad , P. Chudoba , I. Ciepał , C. Deveaux , D. Dittert , J. Dreyer , E. Epple , L. Fabbietti , P. Fonte , C. Franco , J. Friese , I. Fröhlich , J. Förtsc , T. Galatyuk , J. A. Garzón , R. Gernhäuser , R. Greifenhagen , M. Grunwald , M. Gumberidze , S. Harabasz , T. Heinz , T. Hennino , C. Höhne , F. Hojeij , R. Holzmann , M. Idzik , B. Kämpfer , K-H. Kampert , B. Kardan , V. Kedych , I. Koenig , W. Koenig , M. Kohls , J. Kolas , B. W. Kolb , G. Korcyl , G. Kornakov , R. Kotte , W. Krueger , A. Kugler , T. Kunz , R. Lalik , K. Lapidus , S. Linev , F. Linz , L. Lopes , M. Lorenz , T. Mahmoud , L. Maier , A. Malige , J. Markert , S. Maurus , V. Metag , J. Michel , D. M. Mihaylov , V. Mikhaylov , A. Molenda , C. Müntz , R. Münzer , M. Nabroth , L. Naumann , K. Nowakowski , J. Orliński , J. -H. Otto , Y. Parpottas , M. Parschau , C. Pauly , V. Pechenov , O. Pechenova , K. Piasecki , J. Pietraszko , T. Povar , A. Prozorov , W. Przygoda , K. Pysz , B. Ramstein , N. Rathod , P. Rodriguez-Ramos , A. Rost , A. Rustamov , P. Salabura , T. Scheib , N. Schild , K. Schmidt-Sommerfeld , H. Schuldes , E. Schwab , F. Scozzi , F. Seck , P. Sellheim , J. Siebenson , L. Silva , U. Singh , J. Smyrski , S. Spataro , S. Spies , M. Stefaniak , H. Ströbele , J. Stroth , P. Strzempek , C. Sturm , K. Sumara , O. Svoboda , M. Szala , P. Tlusty , M. Traxler , H. Tsertos , O. Vazquez-Doce , V. Wagner , A. A. Weber , C. Wendisch , M. G. Wiebusch , J. Wirth , H. P. Zbroszczyk , E. Zherebtsova , P. Zumbruch , C. Curceanu , K. Piscicchia , A. Scordo

We investigate the $A(p,K^+){_\Lambda}B$ reaction within a covariant two nucleon model. We focus on amplitudes which are described by creation, propagation and decay into relevant channel of $N^*$(1650), $N^*$(1710), and $N^*$(1720)…

Nuclear Theory · Physics 2009-11-11 R. Shyam , H. Lenske , U. Mosel

We study the mechanism of the associated Lambda-kaon and Sigma-kaon production in nucleon-nucleon collisions over an extended range of near threshold beam energies within an effective Lagrangian model, to understand of the new data on pp…

Nuclear Theory · Physics 2009-11-11 Radhey Shyam

Nucleon resonances are investigated through the electromagnetic production of K-mesons. We study the kaon photoproduction process at tree-level and compare to a recently developed unitary K-matrix approach. Employing hadronic form factors…

Nuclear Theory · Physics 2007-05-23 C. Bennhold , T. Mart , A. Waluyo , H. Haberzettl , G. Penner , T. Feuster , U. Mosel

Fully constrained bubble chamber data on the pp -> pi+ pn and pp -> pi+ d reactions are used to investigate the ratio of the counting rates for the two processes at low pn excitation energies. Whereas the ratio is in tolerable agreement…

Nuclear Theory · Physics 2017-06-28 G. Faeldt , C. Wilkin

We study the gamma p ---> K^+ Lambda(1405) reaction at energies close to threshold using a chiral unitary model where the resonance is generated dynamically from K^-p interaction with other channels constructed from the octets of baryons…

Nuclear Theory · Physics 2009-10-31 J. C. Nacher , E. Oset , H. Toki , A. Ramos

Evidence for the neutron-rich hypernucleus 6{\Lambda}H is presented from the FINUDA experiment at DA{\Phi}NE, Frascati, studying ({\pi}+, {\pi}-) pairs in coincidence from the K- +6Li \rightarrow 6 H+{\pi}+ production reaction followed by…

The A-dependence is observed in $x_F$-distributions for the $\Lambda K^0$ system produced with the small transverse momentum in the neutron-nucleus interactions. For the $\Lambda$ hyperons similar dependence isn't seen. The result is…

We present a theoretical investigation of $\Lambda(1520)$ attenuation in ${\gamma}A$ reactions near the threshold. It is performed in the framework of a collision model based on the nuclear spectral function. The model accounts for both…

Nuclear Theory · Physics 2011-12-02 E. Ya. Paryev

We extend the study of a JP=2+, I=3/2 pion-Lambda-nucleon quasibound state [Phys. Rev. D 78, 014013 (2008)] by solving nonrelativistic Faddeev equations, using 3S1-3D1, Lambda N - Sigma N coupled channels Chiral Quark Model local…

Nuclear Theory · Physics 2010-05-28 Humberto Garcilazo , Avraham Gal

We study the production of bound cascade hypernuclei via the (K-,K+) reaction on 12C and 28Si targets within a covariant effective Lagrangian model, employing the cascade bound state spinors derived from the latest quark-meson coupling…

Nuclear Theory · Physics 2012-05-10 R. Shyam , K. Tsushima , A. W. Thomas

In a recent paper [PLB 837 (2023) 137669] we showed that all measured ($1s_\Lambda$, $1p_\Lambda$) pairs of $\Lambda$ binding energies in $\Lambda$-hypernuclei across the periodic table, $12\leq A \leq 208$, can be obtained from a…

Nuclear Theory · Physics 2023-08-15 E. Friedman , A. Gal