FIRST MEASUREMENT OF THE P(P)OVER-BAR -] N(N)OVER-BAR DEPOLARIZATION PARAMETER D-0N0N AT 546 AND 875 MEV/C

被引：11
作者：
AHMIDOUCH, A
HEER, E
HESS, R
LECHANOINELELUC, C
MASCARINI, C
RAPIN, D
BIRSA, R
BRADAMANTE, F
BRESSAN, A
TORRECOLAUTTI, SD
GIORGI, M
LAMANNA, M
MARTIN, A
PENZO, A
SCHIAVON, P
TESSAROTTO, F
MACCIOTTA, MP
MASONI, A
PUDDU, G
SERCI, S
NIINIKOSKI, T
RIJLLART, A
CATZ, H
FAIVRE, JC
PERROTKUNNE, F
ARVIEUX, J
BERTINI, R
KUNNE, RA
AGNELLO, M
IAZZI, F
MINETTI, B
BRESSANI, T
CHIAVASSA, E
DEMARCO, N
MUSSO, A
PICCOTTI, A
机构：
[1] UNIV TRIESTE, TRIESTE, ITALY
[2] IST NAZL FIS NUCL, TRIESTE, ITALY
[3] UNIV CAGLIARI, CAGLIARI, ITALY
[4] IST NAZL FIS NUCL, CAGLIARI, ITALY
[5] CERN, CH-1211 GENEVA, SWITZERLAND
[6] CEN, DAPANIA, SPHN, GIF SUR YVETTE, FRANCE
[7] CENS, CEA, DSM, F-91191 GIF SUR YVETTE, FRANCE
[8] CENS, IN2P3, CNRS, LNS, F-91191 GIF SUR YVETTE, FRANCE
[9] IST NAZL FIS NUCL, I-10125 TURIN, ITALY
[10] POLITECN TURINO, TURIN, ITALY
[11] POLITECN TORINO, TURIN, ITALY
来源：
NUCLEAR PHYSICS B | 1995年 / 444卷 / 1-2期
关键词：
D O I：
10.1016/0550-3213(95)00147-K
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The depolarization parameter D-OnOn of the ($) over bar pp --> ($) over bar nn charge exchange reaction has been measured for the first time at the CERN Low Energy Antiproton Ring (LEAR) at two antiproton momenta, 546 and 875 MeV/c. The transverse polarization of the recoil neutron was analyzed using a large-acceptance neutron polarimeter made up of two parallel plastic scintillator planes. D-OnOn is usually less than 0.35 which suggests that the spin-spin amplitudes dominate in the scattering matrix. Results are compared with the predictions of various ($) over bar NN potential models. The agreement is in general satisfactory.
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页码：27 / 58
页数：32
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