An operator approach to weighted cross sections

F. R. Ore; George Sterman

doi:10.1016/0550-3213(80)90308-9

An operator approach to weighted cross sections

F. R. Ore
, George Sterman

Institute for Theoretical Physics

Institute for Advanced Studies

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

A formalism is developed for expressing annihilation cross sections directly in terms of the vacuum expectation values of certain time-ordered products. This necessitates the introduction of a class of operators defined as spatial of multilocal products of fields. The formalism is used to study qualitatively the effects of a dilute gas of instantons on weighted cross sections, and also to rederive results on the cancellation of mass divergences.

Original language	English
Pages (from-to)	93-118
Number of pages	26
Journal	Nuclear Physics, Section B
Volume	165
Issue number	1
DOIs	https://doi.org/10.1016/0550-3213(80)90308-9
State	Published - Mar 17 1980

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title = "An operator approach to weighted cross sections",

abstract = "A formalism is developed for expressing annihilation cross sections directly in terms of the vacuum expectation values of certain time-ordered products. This necessitates the introduction of a class of operators defined as spatial of multilocal products of fields. The formalism is used to study qualitatively the effects of a dilute gas of instantons on weighted cross sections, and also to rederive results on the cancellation of mass divergences.",

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N2 - A formalism is developed for expressing annihilation cross sections directly in terms of the vacuum expectation values of certain time-ordered products. This necessitates the introduction of a class of operators defined as spatial of multilocal products of fields. The formalism is used to study qualitatively the effects of a dilute gas of instantons on weighted cross sections, and also to rederive results on the cancellation of mass divergences.

AB - A formalism is developed for expressing annihilation cross sections directly in terms of the vacuum expectation values of certain time-ordered products. This necessitates the introduction of a class of operators defined as spatial of multilocal products of fields. The formalism is used to study qualitatively the effects of a dilute gas of instantons on weighted cross sections, and also to rederive results on the cancellation of mass divergences.

UR - https://www.scopus.com/pages/publications/0002908724

U2 - 10.1016/0550-3213(80)90308-9

DO - 10.1016/0550-3213(80)90308-9

M3 - Article

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SN - 0550-3213

VL - 165

SP - 93

EP - 118

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 1

ER -

An operator approach to weighted cross sections

Abstract

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