Abstract
Correlations of oppositely charged pions produced in interactions of protons and light nuclei with different nuclear targets are investigated. The invariant mass distributions are analyzed in order to search for new conjectured nuclear effects. Strong and electromagnetic final state interactions between pions and the Coulomb interaction between pions and the target nucleus are taken into account. An admixture of pion pairs coming from resonance decays is estimated. An enhancement in the low invariant mass region is observed only for heavy target systems. A shadowing effect due to pion absorption inside the nuclear medium is considered as a possible source of this pattern. Azimuthal {pi}{sup +}{pi}{sup -} correlations and pion yield dependence on the impact parameter, as well as transport calculations, seem to confirm this assumption. (author) 59 refs.; 10 figs.
Pluta, J;
[1]
Lednicky, R;
Agakishiev, H N;
Grishin, V G;
[2]
Stefanski, P;
Dabrowski, H;
[3]
Bauer, W;
Danielewicz, P;
Klakow, D;
[4]
Schuck, P;
[5]
Rahmani, A;
Ardouin, D;
[6]
DIOGENE Collaboration
- Warsaw Univ. of Technology (Poland). Inst. of Physics
- Joint Inst. for Nuclear Research, Dubna (Russian Federation)
- Institute of Nuclear Physics, Cracow (Poland)
- National Superconducting Cyclotron Lab., East Lansing, MI (United States)
- Grenoble-1 Univ., 38 (France). Inst. des Sciences Nucleaires
- and others
Citation Formats
Pluta, J, Lednicky, R, Agakishiev, H N, Grishin, V G, Stefanski, P, Dabrowski, H, Bauer, W, Danielewicz, P, Klakow, D, Schuck, P, Rahmani, A, Ardouin, D, and DIOGENE Collaboration.
Possible observation of medium-effects using a pion correlation technique.
France: N. p.,
1992.
Web.
Pluta, J, Lednicky, R, Agakishiev, H N, Grishin, V G, Stefanski, P, Dabrowski, H, Bauer, W, Danielewicz, P, Klakow, D, Schuck, P, Rahmani, A, Ardouin, D, & DIOGENE Collaboration.
Possible observation of medium-effects using a pion correlation technique.
France.
Pluta, J, Lednicky, R, Agakishiev, H N, Grishin, V G, Stefanski, P, Dabrowski, H, Bauer, W, Danielewicz, P, Klakow, D, Schuck, P, Rahmani, A, Ardouin, D, and DIOGENE Collaboration.
1992.
"Possible observation of medium-effects using a pion correlation technique."
France.
@misc{etde_10146456,
title = {Possible observation of medium-effects using a pion correlation technique}
author = {Pluta, J, Lednicky, R, Agakishiev, H N, Grishin, V G, Stefanski, P, Dabrowski, H, Bauer, W, Danielewicz, P, Klakow, D, Schuck, P, Rahmani, A, Ardouin, D, and DIOGENE Collaboration}
abstractNote = {Correlations of oppositely charged pions produced in interactions of protons and light nuclei with different nuclear targets are investigated. The invariant mass distributions are analyzed in order to search for new conjectured nuclear effects. Strong and electromagnetic final state interactions between pions and the Coulomb interaction between pions and the target nucleus are taken into account. An admixture of pion pairs coming from resonance decays is estimated. An enhancement in the low invariant mass region is observed only for heavy target systems. A shadowing effect due to pion absorption inside the nuclear medium is considered as a possible source of this pattern. Azimuthal {pi}{sup +}{pi}{sup -} correlations and pion yield dependence on the impact parameter, as well as transport calculations, seem to confirm this assumption. (author) 59 refs.; 10 figs.}
place = {France}
year = {1992}
month = {Dec}
}
title = {Possible observation of medium-effects using a pion correlation technique}
author = {Pluta, J, Lednicky, R, Agakishiev, H N, Grishin, V G, Stefanski, P, Dabrowski, H, Bauer, W, Danielewicz, P, Klakow, D, Schuck, P, Rahmani, A, Ardouin, D, and DIOGENE Collaboration}
abstractNote = {Correlations of oppositely charged pions produced in interactions of protons and light nuclei with different nuclear targets are investigated. The invariant mass distributions are analyzed in order to search for new conjectured nuclear effects. Strong and electromagnetic final state interactions between pions and the Coulomb interaction between pions and the target nucleus are taken into account. An admixture of pion pairs coming from resonance decays is estimated. An enhancement in the low invariant mass region is observed only for heavy target systems. A shadowing effect due to pion absorption inside the nuclear medium is considered as a possible source of this pattern. Azimuthal {pi}{sup +}{pi}{sup -} correlations and pion yield dependence on the impact parameter, as well as transport calculations, seem to confirm this assumption. (author) 59 refs.; 10 figs.}
place = {France}
year = {1992}
month = {Dec}
}