Positron production in multiphoton light-by-light scattering

被引：762

作者：

Burke, DL

Field, RC

HortonSmith, G

Spencer, JE

Walz, D

Berridge, SC

Bugg, WM

Shmakov, K

Weidemann, AW

Bula, C

McDonald, KT

Prebys, EJ

Bamber, C

Boege, SJ

Koffas, T

Kotseroglou, T

Melissinos, AC

Meyerhofer, DD

Reis, DA

Raggk, W

机构：

[1] UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA

[2] PRINCETON UNIV, JOSEPH HENRY LABS, PRINCETON, NJ 08544 USA

[3] UNIV ROCHESTER, DEPT PHYS & ASTRON, ROCHESTER, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.79.1626

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A signal of 106 +/- 14 positrons above background has been observed in collisions of a low-emittance 46.6 GeV electron beam with terawatt pulses from a Nd:glass laser at 527 nm wavelength in an experiment at the Final Focus Test Beam at SLAG. The positrons are interpreted as arising from a two-step process in which laser photons are backscattered to GeV energies by the electron beam followed by a collision between the high-energy photon and several laser photons to produce an electron-positron pair. These results are the first laboratory evidence for inelastic light-by-light scattering involving only real photons.

引用

页码：1626 / 1629

页数：4

共 19 条

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