Journal article
Search for resonances decaying to e(+)-jet in e(+)p interactions at HERA
The European physical journal. C, Particles and fields, Vol.16(2), pp.253-267
08/01/2000
DOI: 10.1007/s100520050018
Abstract
The e(+)-jet invariant mass spectrum produced in the reaction e(+)p --> e(+)X has been studied at a center-of-mass energy of 300 GeV. The data were collected. using the ZEUS detector operating at the HERA collider, and correspond to an integrated luminosity of 47.7 pb(-1). The observed mass spectrum is in good agreement with Standard Model expectations up to an e(+)-jet mass of 210 GeV. Above this mass. some excess is seen. The angular distribution of these events is typical of high-Q(2) neutral current events and does not give convincing evidence for the presence of a narrow scalar or vector state. Limits are presented on the product of cross section and branching ratio for such a slate and are interpreted as limits on leptoquark or R-parity-violating squark production. Specific leptoquark types are ruled out at 95% confidence level for coupling strength lambda = 0.3 for masses between 150 and 280 GeV.
Details
- Title: Subtitle
- Search for resonances decaying to e(+)-jet in e(+)p interactions at HERA
- Creators
- ZEUS CollaborationJ Repond (Contributor)U Mallik (Contributor)
- Resource Type
- Journal article
- Publication Details
- The European physical journal. C, Particles and fields, Vol.16(2), pp.253-267
- DOI
- 10.1007/s100520050018
- ISSN
- 1434-6044
- eISSN
- 1434-6052
- Publisher
- Springer Nature
- Number of pages
- 15
- Language
- English
- Date published
- 08/01/2000
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627296302771
Metrics
4 Record Views