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Zoekopdracht: journal id: "physicsxlettersxb"

AuteursS.V. Chekanov (et al.), S.J.L.A. Grijpink, E.N. Koffeman, P.M. Kooijman, E. Maddox, A. Pellegrino, S.E.S. Schagen, H.G.J.M. Tiecke, J.J. Velthuis, L.W. Wiggers, E. de Wolf
TitelSearch for contact interactions, large extra dimensions and finite quark radius in ep collisions at HERA
TijdschriftPhysics Letters B
Jaargang591
Jaar2004
Pagina's23-41
ISSN03702693
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Institute for High Energy Physics (IHEF)
Trefwoorden-
SamenvattingA 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 40 000 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.
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