Search for scalar top quark production in (Formula presented.) collisions at (Formula presented.) = 1.96 TeV

CDF Collaboration

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in (Formula presented.) collisions at (Formula presented.) = 1.96TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb−1. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV/c2 at 95% confidence level.

Original languageEnglish
Article number158
JournalJournal of High Energy Physics
Volume2012
Issue number10
DOIs
Publication statusPublished - Oct 25 2012
Externally publishedYes

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quarks
scalars
collisions
sensitivity analysis
transverse momentum
confidence
luminosity
detectors
predictions

Keywords

  • Hadron-Hadron Scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Search for scalar top quark production in (Formula presented.) collisions at (Formula presented.) = 1.96 TeV. / CDF Collaboration.

In: Journal of High Energy Physics, Vol. 2012, No. 10, 158, 25.10.2012.

Research output: Contribution to journalArticle

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abstract = "We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in (Formula presented.) collisions at (Formula presented.) = 1.96TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb−1. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV/c2 at 95{\%} confidence level.",
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AU - Aaltonen, T.

AU - Álvarez González, B.

AU - Amerio, S.

AU - Amidei, D.

AU - Anastassov, A.

AU - Annovi, A.

AU - Antos, J.

AU - Apollinari, G.

AU - Appel, J. A.

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AU - Azfar, F.

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AU - Bae, T.

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AU - Bellinger, J.

AU - Benjamin, D.

AU - Beretvas, A.

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AU - Bisello, D.

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AU - Bodek, A.

AU - Bortoletto, D.

AU - Boudreau, J.

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AU - Bromberg, C.

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AU - Budagov, J.

AU - Budd, H. S.

AU - Burkett, K.

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AB - We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in (Formula presented.) collisions at (Formula presented.) = 1.96TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb−1. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV/c2 at 95% confidence level.

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