Tensor analyzing power T 20 for cumulative pion production from deuterons in the GeV energy region
作者: S. AfanasievYu. AnisimovM. FujiedaS. FukuiT. HasegawaN. HorikawaA. IsupovT. IwataA. IzotovT. KageyaK. KobaV. KolesnikovA. LitvinenkoA. MalakhovT. MatsudaY. MiyachiA. NikiforovV. PerelyginS. ReznikovP. RukoyatkinA. SemenovI. SemenovaA. WakaiL. Zolin
作者单位: 1Joint Institute for Nuclear Research, Dubna 141980, Moscow region, Russia
2Nagoya University, Department of Physics, Nagoya 464-01, Japan
3Miyazaki University, Faculty of Engineeringg, Gakuen-Kihanadai, Miyazaki 889-21, Japan
4Nagoya University, Center for Integrated Research in Science and Engineering, Nagoya 464-01, Japan
5St. Petersburg Institute for Nuclear Physics, Gatchina 188350, Russia
刊名: Nuclear Physics, Section A, 1997, Vol.625 (4), pp.817-831
来源数据库: Elsevier Journal
DOI: 10.1016/S0375-9474(97)00394-1
关键词: Nuclear reactions
原始语种摘要: Abstract(#br)The tensor analyzing power T 20 for the reaction d ↑ + 12 C → π ± (0°) + X has been measured with a polarized deuteron beam from 6.2 to 9.0 GeV/ c at a pion momentum3.0 GeV/ c . This experiment is focused on “cumulatively produced pions”, which are produced beyond the kinematically allowed limit for free nucleon-nucleon collisions. The measured values of T 20 turn out to be close to zero. They are in disagreement with the results of our impulse approximation calculation which is based on a single NN → πNN interaction and takes into account the internal motion of nucleons in the deuteron. Possible explanations of the result are discussed.
全文获取路径: Elsevier  (合作)
影响因子:1.525 (2012)