Document Type
Article
Publication Date
7-1-2004
Abstract
A search for physics beyond the Standard Model has been performed with high-Q2 neutral current deep inelastic scattering events recorded with the ZEUS detector at HERA. Two data sets, e+p→e +X and e-p→e-X, with respective integrated luminosities of 112 pb-1 and 16 pb-1, were analyzed. The data reach Q2 values as high as 40000 GeV2. No significant deviations from Standard Model predictions were observed. Limits were derived on the effective mass scale in eeqq contact interactions, the ratio of leptoquark mass to the Yukawa coupling for heavy leptoquark models and the mass scale parameter in models with large extra dimensions. The limit on the quark charge radius, in the classical form factor approximation, is 0.85×10 -16 cm. © 2004 Published by Elsevier B.V.
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
591
Issue
1-2
First Page
23
Last Page
41
DOI
10.1016/j.physletb.2004.03.081
First Department
Physics
Recommended Citation
Chekanov, S.; Derrick, M.; Krakauer, D.; Loizides, J. H.; Magill, S.; Miglioranzi, S.; Musgrave, B.; Repond, J.; Yoshida, R.; Mattingly, Margarita C. K.; Antonioli, P.; Bari, G.; Basile, M.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cara Romeo, G.; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; de Pasquale, S.; Giusti, P.; Iacobucci, G.; Margotti, A.; Montanari, A.; Nania, R.; Palmonari, F.; Pesci, A.; and Sartorelli, G., "Search for Contact Interactions, Large Extra Dimensions and Finite Quark Radius in ep Collisions at HERA" (2004). Faculty Publications. 2199.
https://digitalcommons.andrews.edu/pubs/2199
Acknowledgements
Open access article retrieved April 9, 2021 from https://www.sciencedirect.com/science/article/pii/S0370269304005660