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Search for a dark matter candidate produced in association with a single top quark in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

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

Fermi National Accelerator Laboratory 2012-02

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Título:
Search for a dark matter candidate produced in association with a single top quark in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV
Autor: Aaltonen, T ; Alvarez Gonzalez, B ; Amerio, S ; Amidei, D ; Anastassov, A ; Annovi, A ; Antos, J ; Anza, F ; Apollinari, G ; Appel, J. A ; Arisawa, T
Assuntos: 72 Physics Of Elementary Particles And Fields ; Cross Sections ; Decay ; Experiment-Hep ; Fermilab Collider Detector ; Fermilab Tevatron ; Luminosity ; Nonluminous Matter ; Production ; Standard Model ; T Quarks ; Transverse Energy Experiment-Hep
Notas: Journal Name: Submitted to Phys.Rev.Lett.; Journal Volume: 108; Journal Issue: 20
Descrição: We report a new search for dark matter in a data sample of an integrated luminosity of 7.7 fb{sup -1} of Tevatron p{bar p} collisions at {radical}s = 1.96 TeV, collected by the CDF II detector. We search for production of a dark matter candidate, D, in association with a single top quark. We consider the hadronic decay mode of the top quark exclusively, yielding a final state of three jets with missing transverse energy. The data are consistent with the standard model; we thus set 95% confidence level upper limits on the cross section of the process p{bar p} {yields} t + D as a function of the mass of the dark-matter candidate. The limits are approximately 0.5 pb for a dark-matter particle with mass in the range of 0 - 150 GeV/c{sup 2}.
Editor: Fermi National Accelerator Laboratory
Data de criação/publicação: 2012-02
Idioma: Inglês

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Search for a dark matter candidate produced in association with a single top quark in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

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

Fermi National Accelerator Laboratory 2012-02

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