Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 12-18

Zeitschrift: Physics Letters B

Bandnummer: 376

Heftnummer: 1-3

ISSN: 0370-2693

Open Access Status: Green

DOI Link: https://doi.org/10.1016/0370-2693(96)00302-4

Verlag: Elsevier

Abstract: 

A full calculation of lepton-pair angular characteristics is carried out for e⁺e⁻ pairs created in p + Be and Ca + Ca collisions from 1.0 to 2.1 GeV/A. It is demonstrated that the dilepton decay anisotropy depends sensitively on the different sources and may be used for disentangling them. Due to the dominance of the η- and Δ-Dalitz decays and only a small anisotropy coefficient for π⁺π⁻ annihilation, the expected anisotropy coefficients show a decrease with invariant mass of the dilepton pair and change only moderately when comparing p + Be and Ca + Ca reactions at the same bombarding energy.

Harvard-Zitierstil: Bratkovskaya, E., Cassing, W. and Mosel, U. (1996) Dilepton anisotropy from p+ Be and Ca+ Ca collisions at BEVALAC energies, Physics Letters B, 376(1-3), pp. 12-18. https://doi.org/10.1016/0370-2693(96)00302-4

APA-Zitierstil: Bratkovskaya, E., Cassing, W., & Mosel, U. (1996). Dilepton anisotropy from p+ Be and Ca+ Ca collisions at BEVALAC energies. Physics Letters B. 376(1-3), 12-18. https://doi.org/10.1016/0370-2693(96)00302-4