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.

引用

页码：27 / 58

页数：32

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