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The $\phi$-meson properties in cold nuclear matter are investigated by implementing resonant $\phi N$ interactions as described in effective approaches including the unitarization of scattering amplitudes. Several $N^*$-like states are…

Nuclear Theory · Physics 2017-01-18 D. Cabrera , A. N. Hiller Blin , M. J. Vicente Vacas

We study the structure and formation of the $\phi$ mesic nuclei to investigate the in-medium modification of the $\phi$-meson spectral function at finite density. We consider (${\bar p},\phi$), ($\gamma,p$) and ($\pi^-,n$) reactions to…

Nuclear Theory · Physics 2010-12-13 J. Yamagata-Sekihara , D. Cabrera , M. J. Vicente Vacas , S. Hirenzaki

The $\phi$ meson spectrum, which in vacuum is dominated by its coupling to the $\bar{K} K$ system, is modified in nuclear matter. Following a model based on chiral SU(3) dynamics we calculate the $\phi$ meson selfenergy in nuclear matter…

Nuclear Theory · Physics 2011-02-09 D. Cabrera , M. J. Vicente Vacas

We perform calculations for the production of $\phi$ mesons in nuclei at energies just above threshold and study the $A$ dependence of the cross section. We use results for the $\phi$ selfenergy in the medium obtained within a chiral…

Nuclear Theory · Physics 2009-11-10 V. K. Magas , L. Roca , E. Oset

The $\omega$ and $\phi$ mesons dominantly decay outside the nucleus because the decay-lengths of them are much larger than the dimension of the nucleus. Therefore, the medium modification of the above mesons is studied through their…

Nuclear Theory · Physics 2019-11-06 Swapan Das

The mass and decay width of the $\phi$ meson in cold nuclear matter are computed in an effective Lagrangian approach, with the medium dependence of these properties obtained by evaluating kaon-antikaon loop contributions to the $\phi$…

Nuclear Theory · Physics 2017-11-29 J. J. Cobos-Martínez , K. Tsushima , G. Krein , A. W. Thomas

We study $\phi$-meson production in nuclei to investigate the in-medium modification of the $\phi$-meson spectral function at finite density. We consider (${\bar p},\phi$), ($\gamma,p$) and ($\pi^-,n$) reactions to produce a $\phi$-meson…

Nuclear Theory · Physics 2015-05-13 J. Yamagata-Sekihara , S. Hirenzaki , D. Cabrera , M. J. Vicente Vacas

The properties (masses and decay widths) of the $\phi$ meson are investigated in nuclear matter from the $\phi$ meson self-energy, using the tree-level $\phi K\bar{K}$ Lagrangian, and, incorporating in-medium masses of (anti)kaons…

Nuclear Theory · Physics 2025-02-13 Arpita Mondal , Amruta Mishra

We have studied the decay of the \phi meson in nuclear matter by taking into account the renormalization of the K and \bar{K} mesons in the medium. We separate the contribution of the total width into different reaction channels, K\bar{K}…

Nuclear Theory · Physics 2009-11-06 E. Oset , A. Ramos

We report measurements of differential cross sections and decay asymmetries of incoherent $\phi$-meson photoproduction from the deuteron at forward angles using linearly polarized photons at \Eg=1.5-2.4 GeV. The nuclear transparency ratio…

Based on a prior determination of the $\phi$ selfenergy in a nuclear medium we perform a theoretical study of inclusive $\phi$ photoproduction in nuclei, looking at the $A$ dependence of the cross sections for different $\phi$ momenta. We…

Nuclear Theory · Physics 2011-02-09 D. Cabrera , L. Roca , E. Oset , H. Toki , M. J. Vicente Vacas

Exploring the mass modifications of $\phi$ mesons in nuclei provides insights into the nature of strongly interacting matter. Specifically, $\phi$ meson mass shifts can be related to the in-medium modification of the strange quark…

High Energy Physics - Phenomenology · Physics 2026-03-20 Gabor Balassa , Kazuya Aoki , Philipp Gubler , Su Houng Lee , Hiroyuki Sako , Gyorgy Wolf

In this work, we systematically study the $\phi$ meson and nucleus interaction by analyzing and fitting the cross sections of $\gamma N$$\rightarrow \phi$$N$ ($N$ represent the nucleus) reactions near the threshold. With the help of vector…

Nuclear Theory · Physics 2023-01-26 Xiao-Yun Wang , Chen Dong , Quanjin Wang

We study the $A$ dependence of the $\phi$ meson production cross section in proton nucleus reactios at energies just above threshold, which are accessible in an experimental facility like COSY. This $A$ dependence has two sources: the…

Nuclear Theory · Physics 2015-06-26 V. K. Magas , L. Roca , E. Oset

The mass and decay width of the $\phi$ meson in cold nuclear matter are computed in an effective Lagrangian approach. The medium dependence of these properties are obtained by evaluating kaon-antikaon loop contributions to the $\phi$…

Nuclear Theory · Physics 2017-06-07 J. J. Cobos-Martínez , K. Tsushima , G. Krein , A. W. Thomas

We propose an experimental procedure to find out the medium modifications of the $\phi$ meson. The reaction is inclusive $\phi$ photoproduction in nuclei, looking for $K^+ K^-$ pairs from the $\phi$ decay with total momentum smaller than…

Nuclear Theory · Physics 2014-11-18 E. Oset , M. J. Vicente Vacas , H. Toki , A. Ramos

In the framework of the nuclear spectral function approach for incoherent primary proton-nucleon and secondary pion-nucleon production processes we study the inclusive $\phi$ meson production in the interaction of 2.83 GeV protons with…

Nuclear Theory · Physics 2008-12-18 E. Ya. Paryev

Nuclear production experiments report missing absorption processes of the in-medium phi meson. Contributions arising from the K-bar K cloud have already been widely studied, and therefore we investigate the phi-meson properties in cold…

Nuclear Theory · Physics 2017-03-08 Daniel Cabrera , Astrid N. Hiller Blin , Manuel J. Vicente Vacas

We study the near-threshold pion-induced production of $\phi$ mesons off nuclei in the kinematical conditions of the HADES experiment, recently performed at GSI. The calculations have been performed within a collision model based on the…

Nuclear Theory · Physics 2018-07-02 E. Ya. Paryev

The near-threshold pion-induced $\phi$ production off nuclei has been studied in the kinematical conditions of the HADES experiment using a collision model based on the nuclear spectral function. Starting from the elementary reaction…

Nuclear Experiment · Physics 2023-02-16 E. Ya. Paryev
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