Journal article
Comparison of ZEUS data with standard model predictions for e+p → e+X scattering at high x and Q2
Zeitschrift für Physik. C, Particles and fields, Vol.74(2), pp.207-220
04/23/1997
DOI: 10.1007/s002880050384
Abstract
Using the ZEUS detector at HERA, we have studied the reaction e+p → e+ X for Q2 > 5000 GeV2 with a 20.1 pb−1 data sample collected during the years 1994 to 1996. For Q2 below 15000 GeV2, the data are in good agreement with Standard Model expectations. For Q2 > 35000 GeV2, two events are observed while 0.145 ± 0.013 events are expected. A statistical analysis of a large ensemble of simulated Standard Model experiments indicates that with probability 6.0%, an excess at least as unlikely as that observed would occur above some Q2 cut. For x > 0.55 and y > 0.25, four events are observed where 0.91+ - 0.08 events are expected. A statistical analysis of the two-dimensional distribution of the events in x and y yields a probability of 0.72% for the region x > 0.55 and y > 0.25 and a probability of 7.8% for the entire Q2 > 5000 GeV2 data sample. The observed excess above Standard Model expectations is particularly interesting because it occurs in a previously unexplored kinematic region.
Details
- Title: Subtitle
- Comparison of ZEUS data with standard model predictions for e+p → e+X scattering at high x and Q2
- Creators
- ZEUS CollaborationJose Repond (Contributor) - Physics and AstronomyU Mallik (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Zeitschrift für Physik. C, Particles and fields, Vol.74(2), pp.207-220
- DOI
- 10.1007/s002880050384
- ISSN
- 0170-9739
- eISSN
- 1431-5858
- Language
- English
- Date published
- 04/23/1997
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627320302771
Metrics
8 Record Views