# Near-threshold $K^*(892)^+$ meson production in the interaction of $\pi^-$ mesons with nuclei

• We study the inclusive strange vector meson $K^*(892)^+$ production in ${\pi^-}A$ reactions at near-threshold laboratory incident pion momenta of 1.4–2.0 GeV/c within a nuclear spectral function approach. The approach accounts for incoherent primary $\pi^-$ meson–proton ${\pi^-}p \to {K^*(892)^+}\Sigma^-$ production processes as well as the influence of the scalar $K^*(892)^+$ –nucleus potential (or the $K^*(892)^+$ in-medium mass shift) on these processes. We calculate the absolute differential and total cross sections for the production of $K^*(892)^+$ mesons off carbon and tungsten nuclei at laboratory angles of 0 $^{\circ}$ –45 $^{\circ}$ and at these momenta within five scenarios for the above shift. We show that the $K^*(892)^+$ momentum distributions and their excitation functions (absolute and relative) possess a high sensitivity to changes in the in-medium $K^*(892)^+$ mass shift in the low-momentum region of 0.1–0.6 GeV/c. Therefore, the measurement of such observables in a dedicated experiment at the GSI pion beam facility in the near-threshold momentum domain will allow to get valuable information on the $K^*(892)^+$ in-medium properties.

Figures(7)

Get Citation
E. Ya. Paryev. Near-threshold $K^*(892)^+$ meson production in the interaction of $\pi^-$ mesons with nuclei[J]. Chinese Physics C.
E. Ya. Paryev. Near-threshold $K^*(892)^+$ meson production in the interaction of $\pi^-$ mesons with nuclei[J]. Chinese Physics C.
Milestone
Article Metric

Article Views(38)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142

Title:
Email:

## Near-threshold $K^*(892)^+$ meson production in the interaction of $\pi^-$ mesons with nuclei

• 1. Institute for Nuclear Research, Russian Academy of Sciences, Moscow 117312, Russia
• 2. Institute for Theoretical and Experimental Physics, Moscow 117218, Russia

Abstract: We study the inclusive strange vector meson $K^*(892)^+$ production in ${\pi^-}A$ reactions at near-threshold laboratory incident pion momenta of 1.4–2.0 GeV/c within a nuclear spectral function approach. The approach accounts for incoherent primary $\pi^-$ meson–proton ${\pi^-}p \to {K^*(892)^+}\Sigma^-$ production processes as well as the influence of the scalar $K^*(892)^+$ –nucleus potential (or the $K^*(892)^+$ in-medium mass shift) on these processes. We calculate the absolute differential and total cross sections for the production of $K^*(892)^+$ mesons off carbon and tungsten nuclei at laboratory angles of 0 $^{\circ}$ –45 $^{\circ}$ and at these momenta within five scenarios for the above shift. We show that the $K^*(892)^+$ momentum distributions and their excitation functions (absolute and relative) possess a high sensitivity to changes in the in-medium $K^*(892)^+$ mass shift in the low-momentum region of 0.1–0.6 GeV/c. Therefore, the measurement of such observables in a dedicated experiment at the GSI pion beam facility in the near-threshold momentum domain will allow to get valuable information on the $K^*(892)^+$ in-medium properties.

Reference (51)

/