TY - JOUR
T1 - Current constraints on squark production scenarios for the excess of high Q2 events at HERA
AU - Asakawa, Eri
AU - Kamoshita, Jun Ichi
AU - Sugamoto, Akio
PY - 1999
Y1 - 1999
N2 - We examine the stop production scenario for the excess of high Q2 events observed at HERA, by taking into account the constraints coming from the leptoquark search at Tevatron and the atomic parity violation approximation; experiments. This scenario is shown to survive persistently even under the severe constraints from the other experiments. In the analysis, the branching ratios Bt̃j. of the decay modes t̃j→ed (j = 1,2) are found to be useful parameters, representing a number of unknown parameters in the SUSY models. By expressing the stop contribution to the cross section of deep inelastic ep scattering σ(ep → eX) in terms of Bt̃1 and Bt̃1, the allowed region is successfully identified in the parameter space of Bf and Bt̃2. We can also apply our analysis to future experiments of ep scattering including ep collisions in 1998-1999 at HERA.
AB - We examine the stop production scenario for the excess of high Q2 events observed at HERA, by taking into account the constraints coming from the leptoquark search at Tevatron and the atomic parity violation approximation; experiments. This scenario is shown to survive persistently even under the severe constraints from the other experiments. In the analysis, the branching ratios Bt̃j. of the decay modes t̃j→ed (j = 1,2) are found to be useful parameters, representing a number of unknown parameters in the SUSY models. By expressing the stop contribution to the cross section of deep inelastic ep scattering σ(ep → eX) in terms of Bt̃1 and Bt̃1, the allowed region is successfully identified in the parameter space of Bf and Bt̃2. We can also apply our analysis to future experiments of ep scattering including ep collisions in 1998-1999 at HERA.
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U2 - 10.1016/S0370-2693(99)00196-3
DO - 10.1016/S0370-2693(99)00196-3
M3 - Article
AN - SCOPUS:21744448676
SN - 0370-2693
VL - 451
SP - 105
EP - 112
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -