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Antiproton Production in Ni+ni Collisions at 1.85 Gev/nucleon

LI, GQ; Ko, Che Ming. (American Physical Society, 1994)

Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon is studied in the relativistic Vlasov-Uehling-Uhlenbeck model. The self-energies of the antiproton are determined from the nucleon self-energies by the G-parity ...

Giant resonances in Mg-24

Youngblood, David H.; Lui, YW; Clark, HL. (American Physical Society, 1999)

The giant resonance region in Mg-24 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. The giant resonance peak was found to extend up to E-X = 41 MeV. Isoscalar E0, E1, ...

Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions

Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H. (American Physical Society, 1991)

In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. ...

Transport Model with Quasipions

Xiong, L.; Ko, Che Ming; Koch, V. (American Physical Society, 1993)

We extend the normal transport model to include the medium effect on pions by treating them as quasiparticles. The property of the quasipion is determined using the delta-hole model. Modelling heavy-ion collisions at ...

Measurement of Spin-Correlation Parameters all and Asl in P-P Elastic-Scattering from 500 Mev to 800 Mev

Glass, G.; Bhatia, T. S.; Hiebert, John C.; Kenefick, R. A.; Nath, S.; Northcliffe, L. C.; Tippens, W. B.; Barlow, D. B.; Jarmer, J. J.; Simmons, J. E.; Jeppersen, R. H.; Tripard, G. E. (American Physical Society, 1992)

The spin-correlation observable A(LL) for p-p elastic scattering has been measured at energies 589, 640, 692, 743, and 793 MeV, over a c.m. angular range between 20-degrees and 100-degrees. The spin observable A(SL) was ...

Medium Effects on the Rho-Meson

Asakawa, M.; Ko, Che Ming. (American Physical Society, 1993)

The property of a rho meson in dense nuclear matter is studied using the QCD sum rule. The spectral function appearing on the hadronic side of the sum rule is evaluated in the vector dominance model that takes into account ...

Giant monopole resonance strength in Ca-40

Youngblood, David H.; Lui, YW; Clark, HL. (American Physical Society, 1997)

The giant resonance region in Ca-40 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. A peak at E-x = 17.5 +/- 0.4 MeV with Gamma = 4.95 +/- 0.25 MeV was found to contain ...

Giant monopole resonance strength in Si-28

Youngblood, David H.; Clark, HL; Lui, YW. (American Physical Society, 1998)

The giant resonance region in Si-28 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. The giant resonance peak extended from E-x=12 MeV to 35 MeV and E0 strength corresponding ...

High lying E0 strength in C-12

Youngblood, David H.; Lui, YW; Clark, HL. (American Physical Society, 1998)

The excitation region in C-12 from 7 MeV<E-x<60 MeV was studied with inelastic scattering of 240-MeV alpha particles at small angles including 0 degrees where E0 strength is enhanced. The strengths of known 0(+) states at ...

Subthreshold Antiproton Production in Nucleus-Nucleus Collisions

LI, GQ; Ko, Che Ming; Fang, X. S.; Zheng, Y. M. (American Physical Society, 1994)

Antiproton production in nucleus-nucleus collisions at energies below the threshold for its production from the nucleon-nucleon interaction in free space is studied in the relativistic Vlasov-Uehling-Uhlenbeck model. The ...