EVIDENCE FOR LONGITUDINAL PHOTON POLARIZATION IN MUON-PAIR PRODUCTION BY PIONS

被引：46

作者：

ANDERSON, KJ

COLEMAN, RN

KARHI, KP

NEWMAN, CB

PILCHER, JE

ROSENBERG, EI

THALER, JJ

HOGAN, GE

MCDONALD, KT

SANDERS, GH

SMITH, AJS

机构：

[1] UNIV ILLINOIS,URBANA,IL 61801

[2] PRINCETON UNIV,JOSEPH HENRY LABS,PRINCETON,NJ 08540

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 43卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.43.1219

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Data on-pair production by pions are examined as a function of x and PT for longitudinal photon polarization. Evidence in the form of a sin2* term in the helicity angular distribution is observed for x near 1. This is conclusive evidence that production in this region is not predominantly through on-shell quark annihilation. The result is consistent with a calculation based on quantum chromodynamics. © 1979 The American Physical Society.

引用

页码：1219 / 1222

页数：4

共 11 条

[1]

Anderson K.J., Et al., Phys. Rev. Lett., 42, (1979)

[2]

Hogan G.E., Et al., Phys. Rev. Lett., 42, (1979)

[3]

Newman C.B., Et al., Phys. Rev. Lett., 42, (1979)

[4]

Lam C.S., Tung, Phys. Rev. D, 18, (1978)

[5]

Collins J.C., Soper D.E., Phys. Rev. D, 16, (1977)

[6]

Berger E.L., New Results in High Energy Physics- 1978, AIP Conference Proceedings, 45, (1978)

[7]

Kajantie K., Et al., Phys. Lett., 74 B, (1978)

[8]

Kajantie K., Et al.

[9]

Cleymans J., Kuroda M., Phys. Lett., 80 B, (1979)

[10]

Collins J.C., Phys. Rev. Lett., 42, (1979)

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