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Observation of a soft photon signal in excess of QED expectations in pp interactions
Photons produced in pp interactions at 450 GeV/c were detected by reconstructing the e/sup +/e/sup -/ pairs of photon conversions in a 1 mm thick lead sheet placed in front of the MWPCs of the OMEGA spectrometer at CERN. A soft photon signal 4.1 +or- 0.8 times the inner bremsstrahlung prediction was...
| Autores principales: | , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(02)02837-X http://cds.cern.ch/record/623230 |
| _version_ | 1780900455657766912 |
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| author | Belogianni, A Beusch, Werner Brodbeck, T J Dzheparov, F S French, Bernard R Ganoti, P Kinson, J B Kirk, A Lenti, V Minashvili, I A Perepelitsa, V F Rusakovitch, N A Singovsky, A V Sonderegger, P Spyropoulou-Stassinaki, M Villalobos Baillie, O |
| author_facet | Belogianni, A Beusch, Werner Brodbeck, T J Dzheparov, F S French, Bernard R Ganoti, P Kinson, J B Kirk, A Lenti, V Minashvili, I A Perepelitsa, V F Rusakovitch, N A Singovsky, A V Sonderegger, P Spyropoulou-Stassinaki, M Villalobos Baillie, O |
| author_sort | Belogianni, A |
| collection | CERN |
| description | Photons produced in pp interactions at 450 GeV/c were detected by reconstructing the e/sup +/e/sup -/ pairs of photon conversions in a 1 mm thick lead sheet placed in front of the MWPCs of the OMEGA spectrometer at CERN. A soft photon signal 4.1 +or- 0.8 times the inner bremsstrahlung prediction was observed in the forward rapidity region (y/sub c.m.s/. >or= 1.2), thus extending the domain of the anomalous soft photon effect seen already in K/sup +/p, pi /sup +/ p and pi /sup -/ p interactions. (34 refs). |
| id | cern-623230 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2002 |
| record_format | invenio |
| spelling | cern-6232302019-09-30T06:29:59Zdoi:10.1016/S0370-2693(02)02837-Xhttp://cds.cern.ch/record/623230engBelogianni, ABeusch, WernerBrodbeck, T JDzheparov, F SFrench, Bernard RGanoti, PKinson, J BKirk, ALenti, VMinashvili, I APerepelitsa, V FRusakovitch, N ASingovsky, A VSonderegger, PSpyropoulou-Stassinaki, MVillalobos Baillie, OObservation of a soft photon signal in excess of QED expectations in pp interactionsParticle Physics - ExperimentPhotons produced in pp interactions at 450 GeV/c were detected by reconstructing the e/sup +/e/sup -/ pairs of photon conversions in a 1 mm thick lead sheet placed in front of the MWPCs of the OMEGA spectrometer at CERN. A soft photon signal 4.1 +or- 0.8 times the inner bremsstrahlung prediction was observed in the forward rapidity region (y/sub c.m.s/. >or= 1.2), thus extending the domain of the anomalous soft photon effect seen already in K/sup +/p, pi /sup +/ p and pi /sup -/ p interactions. (34 refs).oai:cds.cern.ch:6232302002 |
| spellingShingle | Particle Physics - Experiment Belogianni, A Beusch, Werner Brodbeck, T J Dzheparov, F S French, Bernard R Ganoti, P Kinson, J B Kirk, A Lenti, V Minashvili, I A Perepelitsa, V F Rusakovitch, N A Singovsky, A V Sonderegger, P Spyropoulou-Stassinaki, M Villalobos Baillie, O Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title | Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title_full | Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title_fullStr | Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title_full_unstemmed | Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title_short | Observation of a soft photon signal in excess of QED expectations in pp interactions |
| title_sort | observation of a soft photon signal in excess of qed expectations in pp interactions |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1016/S0370-2693(02)02837-X http://cds.cern.ch/record/623230 |
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