Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Search for Squarks of Rp-Violating SUSY at HERA   A search for squarks of R-parity violating supersymmetry is performed in $ep$
collisions at HERA using H1 1994 $e^+$ data. Direct single production of
squarks of each generation by $e^+$-quark fusion via a Yukawa coupling
$\lambda'$ is considered. All possible R-parity violating decays and gauge
decays of the squarks are taken into account. No significant deviation from the
Standard Model predictions is found in the various multi-lepton and multi-jet
final states studied and exclusion limits are derived. At 95% confidence level,
the existence of first generation squarks is excluded for masses up to $240
\GeV $ for coupling values $\lambda' \gtrsim \sqrt{4\pi \alpha_{em}}$.The
limits obtained are shown to be only weakly dependent on the free parameters of
the Minimal Supersymmetric Standard Model. Stop squarks are excluded for masses
up to $138 \GeV$ for coupling $\lambda' \times \cos \theta_t$ to $e^+d$ pairs
$\gtrsim 0.1 \times \sqrt{4\pi \alpha_{em}}$, where $\theta_t$ is the mass
mixing angle. Light stop squarks are furthermore searched for through pair
production in $\gamma$-gluon fusion processes. No signal is observed and
exclusion limits are derived. Masses in the range 9 to $24.4 \GeV$ are excluded
at 95% confidence level for $\lambda' \times \cos \theta_t > 10^{-4}$.

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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics