Mar 26 – 30, 2012
University of Bonn
Europe/Berlin timezone

Elastic Z0 production at HERA

Mar 28, 2012, 3:00 PM
Wolfgang Paul Lecture Hall (University of Bonn)

Wolfgang Paul Lecture Hall

University of Bonn

Kreuzbergweg 28, 53115 Bonn, Germany,
Electroweak and searches/structure functions Combined: Electroweak and searches/structure functions


Takuya Nobe (Tokyo Institute of Technology (JP))


A search for events ep-> ep Z0 has been performed in ep collisions at HERA using the ZEUS detector. The search is based on the entire HERA-I and HERA-II data set, amounting to 0.49 fb-1 of integrated luminosity. The Z0 was searched in the di-jet decay mode with elastic condition defined by etamax < 3, where etamax is defined as the pseudorapidity of the energy deposit in the calorimeter closest to the proton beam direction. A di-jet mass peak is observed at the Z0 mass and the number of signal events is extracted from a fit to the mass spectrum. The elastic Z0 production cross section is determined and compared to the SM prediction.

Primary author

Takuya Nobe (Tokyo Institute of Technology (JP))

Presentation materials