A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA)
We have measured the total and differential cross sections of the reaction e+e- → γγ(γ) at center-of-mass energies around 91 GeV, with an integrated luminosity of 14.2 pb-1. The results are in good agreement with QED predictions. We set lower limits, at 95% confidence level, on the QED cutoff parame...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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1992
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| _version_ | 1826277324950077440 |
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| author | Adriani, O Aguilarbenitez, M Ahlen, S Akbari, H Alcaraz, J Aloisio, A Alverson, G Alviggi, M Ambrosi, G An, Q Anderhub, H Anderson, A Andreev, V Angelov, T Antonov, L Antreasyan, D Arce, P Arefiev, A Atamanchuk, A Azemoon, T Aziz, T Baba, P Bagnaia, P Bakken, J Baksay, L |
| author_facet | Adriani, O Aguilarbenitez, M Ahlen, S Akbari, H Alcaraz, J Aloisio, A Alverson, G Alviggi, M Ambrosi, G An, Q Anderhub, H Anderson, A Andreev, V Angelov, T Antonov, L Antreasyan, D Arce, P Arefiev, A Atamanchuk, A Azemoon, T Aziz, T Baba, P Bagnaia, P Bakken, J Baksay, L |
| author_sort | Adriani, O |
| collection | OXFORD |
| description | We have measured the total and differential cross sections of the reaction e+e- → γγ(γ) at center-of-mass energies around 91 GeV, with an integrated luminosity of 14.2 pb-1. The results are in good agreement with QED predictions. We set lower limits, at 95% confidence level, on the QED cutoff parameters of Λ+ > 139 GeV, Λ- > 108 GeV and on the mass of an excited electron of me* > 127 GeV. We searched for Z0 rare decays with photonic signitures in the final state. Upper limits, at 95% confidence level, for branching ratio of Z0 decaying into π0γ/γγ, νγ and γγγ are 1.2 × 10-4, 1.8 × 10-4, 3.3 × 10-5 respectively. © 1992. |
| first_indexed | 2024-03-06T23:27:12Z |
| format | Journal article |
| id | oxford-uuid:6ac5f54b-a209-4579-87c0-b6de76a1c4b7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:27:12Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:6ac5f54b-a209-4579-87c0-b6de76a1c4b72022-03-26T18:59:40ZA TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6ac5f54b-a209-4579-87c0-b6de76a1c4b7Symplectic Elements at Oxford1992Adriani, OAguilarbenitez, MAhlen, SAkbari, HAlcaraz, JAloisio, AAlverson, GAlviggi, MAmbrosi, GAn, QAnderhub, HAnderson, AAndreev, VAngelov, TAntonov, LAntreasyan, DArce, PArefiev, AAtamanchuk, AAzemoon, TAziz, TBaba, PBagnaia, PBakken, JBaksay, LWe have measured the total and differential cross sections of the reaction e+e- → γγ(γ) at center-of-mass energies around 91 GeV, with an integrated luminosity of 14.2 pb-1. The results are in good agreement with QED predictions. We set lower limits, at 95% confidence level, on the QED cutoff parameters of Λ+ > 139 GeV, Λ- > 108 GeV and on the mass of an excited electron of me* > 127 GeV. We searched for Z0 rare decays with photonic signitures in the final state. Upper limits, at 95% confidence level, for branching ratio of Z0 decaying into π0γ/γγ, νγ and γγγ are 1.2 × 10-4, 1.8 × 10-4, 3.3 × 10-5 respectively. © 1992. |
| spellingShingle | Adriani, O Aguilarbenitez, M Ahlen, S Akbari, H Alcaraz, J Aloisio, A Alverson, G Alviggi, M Ambrosi, G An, Q Anderhub, H Anderson, A Andreev, V Angelov, T Antonov, L Antreasyan, D Arce, P Arefiev, A Atamanchuk, A Azemoon, T Aziz, T Baba, P Bagnaia, P Bakken, J Baksay, L A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title | A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title_full | A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title_fullStr | A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title_full_unstemmed | A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title_short | A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA) |
| title_sort | test of quantum electrodynamics in the reaction e e gamma gamma gamma |
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