Cargando…

Is $\alpha'$ also the $e\pm$ annihilation scale ?

A model for the annihilation of electron-positron pairs into hadrons for q/sup 2/=s>4 GeV/sup 2/ and up to the highest measured energies is developed. The main ingredients are point-like couplings between three resonances and photons and the high level of opening thresholds that follows from an e...

Descripción completa

Detalles Bibliográficos
Autores principales: Ferro-Fontan, C, Rubinstein, H R
Lenguaje:eng
Publicado: 1974
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(74)90204-1
http://cds.cern.ch/record/880473
_version_ 1780908129812217856
author Ferro-Fontan, C
Rubinstein, H R
author_facet Ferro-Fontan, C
Rubinstein, H R
author_sort Ferro-Fontan, C
collection CERN
description A model for the annihilation of electron-positron pairs into hadrons for q/sup 2/=s>4 GeV/sup 2/ and up to the highest measured energies is developed. The main ingredients are point-like couplings between three resonances and photons and the high level of opening thresholds that follows from an effective Lagrangian formalism. The model gives an almost constant annihilation cross section, soft pions everywhere and at all energies, high multiplicities and a large absolute cross section. The details of all exclusive channels are also predicted. Other consequences of this point of view concern the discovery of hitherto ignored couplings in three resonances and photons and the high level of opening threshold that follows from an effective Lagrangian formalism. The model gives an almost constant annihilation cross section, soft pions everywhere and at all energies, high multiplicities and a large absolute crosssection. The details of all exclusive channels are also predicted. Other consequences of this point of view concern the discovery of hitherto ignored couplings in low-energy photon initiated reactions. It is argued that the energy regime explored by SPEAR is not the asymptopia and possible further constancy of the cross section in a range of s is discussed. (4 refs).
id cern-880473
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1974
record_format invenio
spelling cern-8804732019-09-30T06:29:59Zdoi:10.1016/0550-3213(74)90204-1http://cds.cern.ch/record/880473engFerro-Fontan, CRubinstein, H RIs $\alpha'$ also the $e\pm$ annihilation scale ?Particle Physics - PhenomenologyA model for the annihilation of electron-positron pairs into hadrons for q/sup 2/=s>4 GeV/sup 2/ and up to the highest measured energies is developed. The main ingredients are point-like couplings between three resonances and photons and the high level of opening thresholds that follows from an effective Lagrangian formalism. The model gives an almost constant annihilation cross section, soft pions everywhere and at all energies, high multiplicities and a large absolute cross section. The details of all exclusive channels are also predicted. Other consequences of this point of view concern the discovery of hitherto ignored couplings in three resonances and photons and the high level of opening threshold that follows from an effective Lagrangian formalism. The model gives an almost constant annihilation cross section, soft pions everywhere and at all energies, high multiplicities and a large absolute crosssection. The details of all exclusive channels are also predicted. Other consequences of this point of view concern the discovery of hitherto ignored couplings in low-energy photon initiated reactions. It is argued that the energy regime explored by SPEAR is not the asymptopia and possible further constancy of the cross section in a range of s is discussed. (4 refs).CERN-TH-1810oai:cds.cern.ch:8804731974
spellingShingle Particle Physics - Phenomenology
Ferro-Fontan, C
Rubinstein, H R
Is $\alpha'$ also the $e\pm$ annihilation scale ?
title Is $\alpha'$ also the $e\pm$ annihilation scale ?
title_full Is $\alpha'$ also the $e\pm$ annihilation scale ?
title_fullStr Is $\alpha'$ also the $e\pm$ annihilation scale ?
title_full_unstemmed Is $\alpha'$ also the $e\pm$ annihilation scale ?
title_short Is $\alpha'$ also the $e\pm$ annihilation scale ?
title_sort is $\alpha'$ also the $e\pm$ annihilation scale ?
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(74)90204-1
http://cds.cern.ch/record/880473
work_keys_str_mv AT ferrofontanc isalphaalsotheepmannihilationscale
AT rubinsteinhr isalphaalsotheepmannihilationscale