UNITARITY RESTRICTIONS ON MESON-NUCLEON HELICITY-FLIP AMPLITUDES AND SLOPE OF THE DIFFRACTION PEAK

被引：4

作者：

MENNESSIER, G ^{[1
]}

ROY, SM ^{[1
]}

SINGH, V ^{[1
]}

机构：

[1] TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1979年 / 50卷 / 03期

关键词：

D O I：

10.1007/BF02813246

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：

We generalize the MacDowell-Martin bound on the slope parameter b A for the spinless case to the case of spin-0-spin-1/2 elastic scattering with parity conservation. We give the optimal answer for all energies as well as the simpler (slightly weaker) bound {Mathematical expression} Here the superscript A refers to the absorptive-part contribution. We also obtain unitarity restrictions on the helicity-flip amplitude {Mathematical expression} in terms of σ tot, σ el, and b A(s). © 1979 Società Italiana di Fisica.

引用

页码：443 / 455

页数：13