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Comparison of ZEUS data with standard model predictions for $e^+ p \to e^+ X$ scattering at high x and $Q^2$статья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Bashindzhagian G.L., Ermolov P.F., Gladilin L.K., Golubkov Yu A., Kobrin V.D., Korzhavina I.A., Kuzmin V.A., Lukina O.Yu, Proskuryakov A.S., Shcheglova L.M., Solomin A.N., Zotov N.P., et al, ZEUS Collaboration
- Журнал: Zeitschrift für Physik C: Particles and Fields
- Том: 74
- Номер: 2
- Год издания: 1997
- Первая страница: 207
- Последняя страница: 220
- DOI: 10.1007/s002880050384
- Аннотация: Using the ZEUS detector at HERA, we have studied the reaction e~+ p -> e~+ X for Q~2 > 5000 GeV~2 with a 20.1 pb~{-1} data sample collected during the years 1994 to 1996. For Q~2 below 15000 GeV~2, the data are in good agreement with Standard Model expectations. For Q~2 > 35000 Gev~2, 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 Q~2 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 Q~2 > 5000 GeV~2 data sample. The observed excess above Standard Model expectations is particularly interesting because it occurs in a previously unexplored kinematic region.
- Добавил в систему: Проскуряков Александр Сергеевич