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Search for single-top production in ep collisions at HERA
- Source :
- Phys. Lett. B 708 (2012) 27-36
- Publication Year :
- 2011
-
Abstract
- A search for single-top production, $ep \rightarrow etX$, has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of $0.37\fbi$. No evidence for top production was found, consistent with the expectation from the Standard Model. Limits were computed for single-top production via flavour changing neutral current transitions. The result was combined with a previous ZEUS result yielding a total luminosity of 0.50fb-1. A 95% credibility level upper limit of 0.13 pb was obtained for the cross section at the centre-of-mass energy of $\sqrt{s}=315\gev$.<br />Comment: Included approximate NLO and NNLO corrections to the cross section calculation used to derive coupling limit for the top production mediated by gamma exchange. 30 pages, 5 figures, 3 tables. Published in Phys. Lett. B 708 (2012) 27
- Subjects :
- High Energy Physics - Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Lett. B 708 (2012) 27-36
- Publication Type :
- Report
- Accession number :
- edsarx.1111.3901
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2012.01.025