Production of Z0 bosons in elastic and quasi-elastic ep collisions at HERA
(2013) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 718, n° 3, p. 915-921 (2013)
Files
pdfdocument.pdf
Restricted Access - Adobe PDF
- 374.78 KB
Details
- Authors
- Abstract
- The production of Z<sup>0</sup> bosons in the reaction ep→eZ<sup>0</sup>p<sup>(*)</sup>, where p<sup>(*)</sup> stands for a proton or a low-mass nucleon resonance, has been studied in ep collisions at HERA using the ZEUS detector. The analysis is based on a data sample collected between 1996 and 2007, amounting to 496pb<sup>-1</sup> of integrated luminosity. The Z<sup>0</sup> was measured in the hadronic decay mode. The elasticity of the events was ensured by a cut on η<inf>max</inf><3.0, where η<inf>max</inf> is the maximum pseudorapidity of energy deposits in the calorimeter defined with respect to the proton beam direction. A signal was observed at the Z<sup>0</sup> mass. The cross section of the reaction ep→eZ<sup>0</sup>p<sup>(*)</sup> was measured to be σ(ep→eZ<sup>0</sup>p<sup>(*)</sup>)=0.13±0.06(stat.)±0.01(syst.) pb, in agreement with the Standard Model prediction of 0.16 pb. This is the first measurement of Z<sup>0</sup> production in ep collisions. © 2012 Elsevier B.V.
- Affiliations
Citations
Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., et al. (2013). Production of Z0 bosons in elastic and quasi-elastic ep collisions at HERA. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 718(3), 915-921. https://doi.org/10.1016/j.physletb.2012.11.051 (Original work published 2013)