Pions produced near the center-of-mass velocity in heavy-ion collisions

Kenneth A Frankel,J A Bistirlich,R. Bossingham,H R Bowman,K M Crowe,C J Martoff, D P Murphy,John O Rasmussen,James P Sullivan,W A Zajc,J P Miller,Osamu Hashimoto, M. Koike, Jan M Peter,W. Benenson,G M Crawley,E. Kashy,J A Nolen,J L Quebert

PHYSICAL REVIEW C（2014）

引用 12|浏览9

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摘要

The cross section for producing ..pi../sup +/ and ..pi../sup -/ at velocities close to that of the center of mass was studied for the /sup 40/Ar+/sup 40/Ca reaction at E/A = 1.05 GeV. The ..pi../sup +/ and ..pi../sup -/ data show a flat plateau around y/sub c.m./ = 0. The ..pi../sup -//..pi../sup +/ ratio of 1.5 +- 0.2 is much lower than published theoretical predictions. Data were also obtained for carbon and uranium targets.

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关键词

elementary particles,charged particles,hadrons,carbon,uranium,center of mass,actinides,bosons,distribution,mesons,nonmetals,metals,pions,cross section,nuclear reactions,multiplicity,elements

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