KIP publications

A search for squarks in R-parity violating supersymmetry is performed in e±p collisions at HERA
using the H1 detector. The full data sample available is used for the analysis. It corresponds to an
integrated luminosity of 438 pb−1 . The resonant production of squarks via a Yukawa-type cou-
pling λ′ is considered, taking into account direct and indirect R-parity violating decay modes. No
evidence for squark production is found in the many different final state topologies investigated.
Mass dependent limits on λ ′_{1j1} and λ′_{11k} ( j, k = 1, 2) are obtained in the framework of the Minimal
Supersymmetric Standard Model. At 95% confidence level squarks of the first two generations
with masses up to 275 GeV are excluded for a Yukawa-type coupling of electromagnetic strength.