MEASUREMENTS OF THE ANTIPROTON-PROTON ELASTIC CROSS-SECTION IN THE BEAM MOMENTUM RANGE BETWEEN 180 AND 600 MEV/C

被引：21

作者：

BRUCKNER, W

CUJEC, B

DOBBELING, H

DWORSCHAK, K

KNEIS, H

MAJEWSKI, S

NOMACHI, M

PAUL, S

POVH, B

RANSOME, RD

SHIBATA, TA

TREICHEL, M

WALCHER, T

机构：

[1] UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY

[2] UNIV MAINZ,INST KERNPHYS,W-6500 MAINZ,GERMANY

[3] UNIV LAVAL,QUEBEC CITY G1K 7P4,QUEBEC,CANADA

[4] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1991年 / 339卷 / 03期

关键词：

D O I：

10.1007/BF01560639

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The differential cross section for antiproton-proton elastic scattering has been measured for the beam momenta between 180 and 600 MeV/c. The real-to-imaginary ratio of the forward elastic scattering amplitude is derived from the Coulomb-nuclear interference. The ratio is found to be close to zero between 180 and 500 MeV/c with a minimum of rho = -0.14 at 260 MeV/c. This result is contrary to model predictions. The phase shifts for the s-, p- and d-waves are extracted. The partial wave compositions of the elastic and inelastic cross sections have been determined. A large contribution of the p-wave is identified in the antiproton-proton interactions at small momenta.

引用

页码：367 / 377

页数：11

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