First Measurement of the t(t) over bar Differential Cross Section d sigma/dM(t(t) over bar) in p(p) over bar Collisions at root s=1.96 TeV
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Aaltonen-2009-First Measurement of.pdf
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Author(s)
Paus, Christoph M. E.
Hahn, Kristian Allan
Choudalakis, Georgios
Goncharov, Maxim
Henderson, C.
Knuteson, Bruce O.
Gomez-Ceballos, Guillelmo
Xie, Si
Makhoul, Khaldoun
Bauer, Gerry P
Date Issued
June 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “First Measurement of the tt-bar Differential Cross Section d sigma /dMtt-bar in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.22 (2009): 222003. (C)2010 The American Physical Society.
Version
Final published version
Abstract
We present a measurement of the t(t) over bar differential cross section with respect to the t(t) over bar invariant mass, d sigma/dM(t(t) over bar), in p(p) over bar collisions at √s=1.96 TeV using an integrated luminosity of 2.7 fb [superscript -1] collected by the CDF II experiment. The t(t) over bar invariant mass spectrum is sensitive to a variety of exotic particles decaying into t(t) over bar pairs. The result is consistent with the standard model expectation, as modeled by PYTHIA with CTEQ5L parton distribution functions.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.222003
