A Search for Leptoquark Bosons in e^-p Collisions at HERA

Details A Search for Leptoquark Bosons in e^-p Collisions at HERA A Search for Leptoquark Bosons in e^-p Collisions at HERA

2001-07-12

arxiv.org/abs/hep-ex/0107038v1

Phys.Lett.B523:234-242,2001

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 4 figures

Scientific paper

10.1016/S0370-2693(01)01262-X

A search for scalar and vector leptoquarks coupling to first generation fermions is performed in the H1 experiment at the ep collider HERA. The analysis uses e^- p data collected in 1998 and 1999 at a centre-of-mass energy of 320 GeV, corresponding to an integrated luminosity of 15 pb^-1. No evidence for the direct production of such particles is found in a data sample with a large transverse momentum final state electron or with large missing transverse momentum, and constraints on leptoquark models are established. For a Yukawa coupling of electromagnetic strength leptoquarks are excluded for masses up to 290 GeV. This analysis complements the leptoquark searches performed previously using data collected whilst HERA was operating with positrons instead of electrons.

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