Search for Scalar Top Quark Production in $$p\bar{p}$$ Collisions at $$\sqrt{s}=1.96$$ TeV

Journal Article · Thu Mar 01 04:00:00 EST 2012

OSTI ID:1039729

Aaltonen, T; Alvarez Gonzalez, B; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, J A; Arisawa, T; Artikov, A

We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in p{bar p} collisions at {radical}s = 1.96 TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb{sup -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/c{sup 2} at 95% confidence level.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: DOE Office of Science
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1039729
• Report Number(s): FERMILAB-PUB-12-075-E; arXiv eprint number arXiv:1203.4171
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGORITHMS
Experiment-HEP
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
LUMINOSITY
PRODUCTION
QUARKS
SCALARS
SENSITIVITY
STANDARD MODEL
T QUARKS
TRANSVERSE MOMENTUM