Measurement of excitation spectra in the ${}^{12}$C$(p,d)$ reaction near the ${\eta }^{\prime }$ emission threshold

Abstract

Excitation spectra of ${}^{11}$C were measured in the ${}^{12}$C$(p,d)$ reaction near the ${\eta }^{\prime }$ emission threshold. A proton beam extracted from the synchrotron SIS-18 at GSI with an incident energy of 2.5 GeV impinged on a carbon target. The momenta of deuterons emitted at 0 degrees were precisely measured with the fragment separator FRS operated as a spectrometer. In contrast to theoretical predictions on the possible existence of deeply bound ${\eta }^{\prime }$ mesic states in carbon nuclei, no distinct structures were observed associated with the formation of bound states. The spectra were analyzed to set stringent constraints on the formation cross section and on the hitherto barely-known ${\eta }^{\prime }$-nucleus interaction.

6 pages, 4 figures

References in corpus (6)

• η- and η'-mesic nuclei and U_A(1) anomaly at finite density
• Formation of eta-prime(958)-mesic nuclei by (p,d) reaction
• Analysis of U${}_A$(1) symmetry-breaking and restoration effects on the scalar-pseudoscalar spectrum
• Feasibility Study of Observing eta' Mesic Nuclei with (p,d) Reaction
• Determination of the eta'-proton scattering length in free space
• Search for Quasi Bound $\eta$ Mesons

Cited by in corpus (12)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• Chiral symmetry restoration at high matter density observed in pionic atoms
• Search for ${\eta }^{\prime }$ bound nuclei in the ${}^{12}\mathrm{C}(\gamma ,p)$ reaction with simultaneous detection of decay products
• In-medium properties of the light and heavy-light mesons in a light-front quark model
• $\eta$ and ${\eta }^{\prime }$ mesons in nuclear matter and nuclei
• Search for the $\eta$ mesic ${}^3$He in the $pd\to dp{\pi }^0$ reaction with the WASA-at-COSY facility
• Comment on "Search for ${\eta }^{\prime }$ Bound Nuclei in the ${}^{12}\mathrm{C}(\gamma ,p)$ Reaction with Simultaneous Detection of Decay Products"
• Spectral function of the ${\eta }^{\prime }$ meson in nuclear medium based on phenomenological models
• Structure of double pionic atoms
• The ${\eta }^{\prime }N$ interaction from the ${\eta }^{\prime }p$ correlation function
• Near-threshold ${\eta }^{\prime }$ meson production in ${\pi }^{-}A$ reactions
• Feasibility of the observation of ${\eta }^{\prime }$ mesic nuclei in the semi-exclusive ${}^{12}$C($p,dp$) reaction