Data Acquisition Backbone Core DABC

$ϕ$ meson properties in nuclear matter from QCD sum rules with chirally separated four-quark condensates

“…Experimentally, no consensus has yet been reached on how the φ meson behaves in nuclear matter. While the KEK E325 experiment measured for the φ meson peak both a negative mass shift and broadening at normal nuclear matter density [28], no mass shift was seen at HADES [33], which rather obtained data suggesting only broadening effects, along the line of earlier results reported in Refs. [27,30,31].…”

“…On the experimental side, we can expect a lot of new data coming out during the next few years, not only from the ongoing J-PARC E16 experiment [34], but also more precise data becoming available from experiments at HADES [33] and ALICE [35]. We expect that these new data, combined with further improved theoretical calculations, will lead to a more complete understanding of the behavior of the φ meson in nuclear matter and, eventually, of the relationship between its properties and chiral symmetry of QCD.…”

“…In this work, we focus on the finite density behavior of the φ meson, which has recently attracted much theoretical [18][19][20][21][22][23][24][25][26] and experimental [27][28][29][30][31][32][33][34][35] attention. On the theoretical side, following the original works of Refs.…”

On the $$\hbox {K}^{-}$$ Absorptions in Light Nuclei by AMADEUS

“…The golden channel for the extrapolation of the K − 4NA BRs and cross sections is represented by the K − 4NA → t reaction, which is presently under investigation by the AMADEUS collaboration by using samples of both K − captures on 4 He and 12 C. The investigation of the t production in the final state of the K − induced reaction on 6,7 Li and 9 Be was previously performed in Refs. [46,47] where only global yields were obtained, which include not only 4NA but also the dominant single nucleon absorption, FSI and conversion processes.…”

“…The experiment exploits hadronic interactions of the K − mesons produced at the DA NE [2] collider (with a mean momentum of p K ∼ 127 MeV/c) with the materials of the KLOE detector [3]. The experimental study of hyperon resonances formation [4,5] and their behaviour in a nuclear environment [6,7], and the search for exotic K − multi-nucleon bound states [8][9][10][11][12][13][14][15][16][17][18], is a fundamental input to the hadronic nuclear physics sector with strangeness S = −1 to understand how the explicit and spontaneous chiral symmetry breaking occur in a nuclear medium.…”