Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV

Details Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV Search for Pair Production of Second Generation Scalar Leptoquarks in ppbar Collisions at sqrt(s)=1.96 TeV

2006-01-31

arxiv.org/abs/hep-ex/0601047v1

Phys.Lett.B636:183-190,2006

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Lett. B

Scientific paper

10.1016/j.physletb.2006.03.056

We report on a search for the pair production of second generation scalar leptoquarks (LQ_2) in ppbar collisions at the center-of-mass energy sqrt(s) = 1.96 TeV, using data corresponding to an integrated luminosity of 294 +- 19 pb^-1 recorded with the D0 detector. No evidence for a leptoquark signal in the LQ_2 LQ_2 -> muq muq channel has been observed, and upper bounds on the product of cross section times branching fraction were set. This yields lower mass limits of m(LQ_2) > 247 GeV for beta = Br(LQ_2->muq) = 1 and m(LQ_2) > 182 GeV for beta = 1/2. Combining these limits with previous D0 results, the lower limits on the mass of a second generation scalar leptoquark are m(LQ_2) > 251 GeV and m(LQ_2) > 204 GeV for beta = 1 and beta = 1/2, respectively.

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