Tensor analyzing power T20 for cumulative pion production from deuterons in the GeV energy region

✍ Scribed by S. Afanasiev; Yu. Anisimov; M. Fujieda; S. Fukui; T. Hasegawa; N. Horikawa; A. Isupov; T. Iwata; A. Izotov; T. Kageya; K. Koba; V. Kolesnikov; A. Litvinenko; A. Malakhov; T. Matsuda; Y. Miyachi; A. Nikiforov; V. Perelygin; S. Reznikov; P. Rukoyatkin; A. Semenov; I. Semenova; A. Wakai; L. Zolin

• Book ID: 104336525
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 676 KB
• Volume: 625
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(97)00394-1

✦ Synopsis

The tensor analyzing power T2o for the reaction d r + Z2C ~ rr + (0 °) + X has been measured with a polarized deuteron beam from 6.2 to 9.0 GeV/c at a pion momentum of 3.0 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 7"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 --~ ~rNN interaction and takes into account the internal motion of nucleons in the deuteron. Possible explanations of the result are discussed. (~) 1997 Elsevier Science B.V.