HAL : in2p3-00281480, version 1
 arXiv : 0803.2263
 Physics Letters B 665 (2008) 1-8
 Search for Scalar Top Quarks in the Acoplanar Charm Jets and Missing Transverse Energy Final State in ppbar Collisions at sqrt(s)=1.96 TeV
 D0 Collaboration(s)
 (2008)
 We present a search for the pair production of scalar top quarks, $\tilde{t}$, using 995 pb$^{-1}$ of data collected in $p\bar{p}$ collisions with the D0 detector at the Fermilab Tevatron Collider at $\sqrt{s} = 1.96$ TeV. Both scalar top quarks are assumed to decay into a charm quark and a neutralino ($\tilde{\chi}^{0}_{1}$), where $\tilde{\chi}^{0}_{1}$ is the lightest supersymmetric particle. This leads to a final state with two acoplanar charm jets and missing transverse energy. We find the yield of such events to be consistent with the standard model expectation, and exclude sets of $\tilde{t}$ and $\tilde{\chi}^{0}_{1}$ masses at the 95% C.L. that substantially extend the domain excluded by previous searches.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0803.2263
 in2p3-00281480, version 1 http://hal.in2p3.fr/in2p3-00281480 oai:hal.in2p3.fr:in2p3-00281480 Contributeur : Danielle Cristofol <> Soumis le : Jeudi 22 Mai 2008, 20:11:22 Dernière modification le : Lundi 23 Juin 2008, 09:47:16