# Search for pair production of the scalar top quark in muon+tau final states

Abstract : We present a search for the pair production of scalar top quarks ($\tilde{t}_{1}$), the lightest supersymmetric partners of the top quarks, in $p\bar{p}$ collisions at a center-of-mass energy of 1.96 TeV, using data corresponding to an integrated luminosity of {7.3 $fb^{-1}$} collected with the \dzero experiment at the Fermilab Tevatron Collider. Each scalar top quark is assumed to decay into a $b$ quark, a charged lepton, and a scalar neutrino ($\tilde{\nu}$). We investigate final states arising from $\tilde{t}_{1} \bar{\tilde{t}_{1}} \rightarrow b\bar{b}\mu\tau \tilde{\nu} \tilde{\nu}$ and $\tilde{t}_{1} \bar{\tilde{t}_{1}} \rightarrow b\bar{b}\tau\tau \tilde{\nu} \tilde{\nu}$. With no significant excess of events observed above the background expected from the standard model, we set exclusion limits on this production process in the ($m_{\tilde{t}_{1}}$,$m_{\tilde{\nu}}$) plane.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00672400
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, February 21, 2012 - 11:01:19 AM
Last modification on : Monday, July 20, 2020 - 9:18:27 AM

### Citation

V. M. Abazov, B. Abbott, B. S. Acharya, M. Adams, T. Adams, et al.. Search for pair production of the scalar top quark in muon+tau final states. Physics Letters B, Elsevier, 2012, 710, pp.578-586. ⟨10.1016/j.physletb.2012.03.028⟩. ⟨in2p3-00672400⟩

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