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

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
Submitted to Phys. Lett. B
Uncontrolled Keywords:
/dk/atira/pure/core/keywords/physics
Subjects:
?? physicsnuclear and high energy physicsqc physics ??
ID Code:
58939
Deposited By:
Deposited On:
05 Oct 2012 15:54
Refereed?:
Yes
Published?:
Published
Last Modified:
03 Feb 2024 00:32