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Related papers: $\Xi$-nuclear constraints from $\Xi^-$ emulsion ca…

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We present a measurement of the production of $\Xi^-$ and $\Lambda\Lambda$ in the $^{12}$C$(K^-, K^+)$ reaction at an incident beam momentum of 1.8 GeV/$\mathit{c}$, based on high-statistics data from J-PARC E42. The cross section for the…

We investigate within a quark-meson coupling (QMC) model, the structure of the bound $\Xi^-$ hypernucleus $^{15}{\!\!\!_{\Xi^-}}$C ($^{14}$N + $\Xi^-$), which has been observed in a recent analysis of the KEK-E373 experiment. In the QMC…

Nuclear Theory · Physics 2019-01-21 R. Shyam , K. Tsushima

The KNNN bound states recently discovered at KEK are studied. It is shown that the Lambda(1405) and Sigma(1385) resonant states coupled to the KN system may generate an attraction strong enough to form such bound states.

Nuclear Theory · Physics 2007-05-23 S. Wycech , A. M. Green

Hyper-Kamiokande (Hyper-K) is a next-generation long baseline neutrino experiment. One of its primary physics goals is to measure neutrino oscillation parameters precisely, including the Dirac CP violating phase. As conventional $\nu_{\mu}$…

High Energy Physics - Experiment · Physics 2025-05-19 T. Mondal , N. W. Prouse , P. de Perio , M. Hartz , D. Bose

It will be shown that the peaks in the (Lambda p) and (Lambda d) invariant mass distributions, observed in recent FINUDA experiments and claimed to be signals of deeply bound kaonic states, are naturally explained in terms of K- absorption…

Nuclear Theory · Physics 2010-11-02 V. K. Magas , E. Oset , A. Ramos

By using local central Yukawa-type interactions that reproduce the low-energy parameters of the latest updates of the Nijmegen ESC08c potentials we show that the $N\Xi$, $NN\Xi$, $N\Xi\Xi$ and $NN\Xi\Xi$ systems with maximal isospin are…

Nuclear Theory · Physics 2016-08-19 H. Garcilazo , A. Valcarce , J. Vijande

$K^-$ mesons offer a unique setting where mesic atoms have been studied both experimentally and theoretically, thereby placing constraints on the possible existence and properties of meson-nuclear quasibound states. Here we review progress…

Nuclear Theory · Physics 2025-10-17 Eliahu Friedman , Avraham Gal , Aleš Cieplý , Jaroslava Hrtánková , Jiří Mareš

The strongly absorptive optical potentials $V_{{\rm opt}}$ which have been deduced from the strong-interaction level shifts and widths in X-ray spectra of $K^-$ and $\bar p$ atoms produce effective repulsion leading to substantial…

Nuclear Theory · Physics 2009-10-31 E. Friedman , A. Gal

The capture of K$^-$ mesons on nucleons bound in nuclei offer a chance to study the $\Sigma \pi$ pairs below the kinematic threshold of the $\bar{\mathrm{K}}$N systems. Various hyperon-pion charged combination are presently under…

Nuclear Experiment · Physics 2017-11-22 Raffaele Del Grande , Kristian Piscicchia , Slawomir Wycech

A double-$\Lambda$ hypernucleus, ${}_{\Lambda\Lambda}\mathrm{Be}$, was observed by the J-PARC E07 collaboration in nuclear emulsions tagged by the $(K^{-},K^{+})$ reaction. This event was interpreted as a production and decay of $…

We calculate the nuclear suppression for $J/\Psi$ and $\Psi'$ production within a coupled channel approach in the subspace of the $J/\Psi$ and $\Psi'$ states. We are able to explain, why (i) the $J/\Psi$ and $\Psi'$ show the same…

High Energy Physics - Phenomenology · Physics 2009-10-28 Joerg Huefner , Boris Kopeliovich

We analyze the peaks in the (Lambda p) and (Lambda d) invariant mass distributions, observed in recent FINUDA experiments and claimed to be signals of deeply bound kaonic states, and find them to be naturally explained in terms of K-…

Nuclear Theory · Physics 2010-05-13 V. K. Magas , E. Oset , A. Ramos

A self consistent scheme for constructing K^- nuclear optical potentials from subthreshold in-medium Kbar-N s-wave scattering amplitudes is presented and applied to analysis of kaonic atoms data and to calculations of K^- quasibound nuclear…

Nuclear Theory · Physics 2013-05-29 A. Cieplý , E. Friedman , A. Gal , D. Gazda , J. Mareš

The isoscalar $\eta$ and $\eta'$ mesons are special in QCD, being linked both to chiral symmetry and to non-perturbative glue associated with the axial anomaly. The properties of these mesons in medium are sensitive to how these dynamics…

High Energy Physics - Phenomenology · Physics 2022-11-15 Steven D. Bass , Volker Metag , Pawel Moskal

Lambda*=Lambda(1405) plays an essential role in forming kaonic nuclear clusters (KNC). The simplest KNC, K-pp, has the structure Lambda*p=(K-p){I=0}p, where a real kaon migrates between two nucleons, mediating super-strong Lambda*-p$…

Nuclear Theory · Physics 2019-04-09 Y. Akaishi , T. Yamazaki

Experiments with $\Xi^-$ atoms are proposed in order to study the nuclear interaction of $\Xi$ hyperons. The production of $\Xi^-$ in the ($K^{-}$, $K^{+}$) reaction, the $\Xi^-$ stopping in matter, and its atomic cascade are incorporated…

Nuclear Theory · Physics 2008-11-26 C. J. Batty , E. Friedman , A. Gal

Particle dark matter could belong to a multiplet that includes an electrically charged state. WIMP dark matter ($\chi^{0}$) accompanied by a negatively charged excited state ($\chi^{-}$) with a small mass difference (e.g. $<$ 20 MeV) can…

The $K^-$ optical potential in the nuclear medium is evaluated self consistently from a free-space $K^-N$ $t$ matrix constructed within a coupled-channel chiral approach to the low-energy $\bar K N$ data. The chiral-model parameters are…

Nuclear Theory · Physics 2008-11-26 A. Cieply , E. Friedman , A. Gal , J. Mares

In this work, the molecular states from the \bar{K}^{*}\Sigma interaction are studied in a quasipotential Bethe-Salpeter equation approach with the one-boson-exchange potentials. We consider the exchanges of vector (\rho,\omega and \phi)…

High Energy Physics - Phenomenology · Physics 2018-08-09 Yin Huang , Rong Wang , Jun He , Ju-Jun Xie , Lisheng Geng