Artigo
Search for scalar top quarks in the acoplanar charm jets and missing transverse energy final state in p(p)over-bar collisions at root s=1.96 TeV
Fecha
2008-07-03Registro en:
Physics Letters B. Amsterdam: Elsevier B.V., v. 665, n. 1, p. 1-8, 2008.
0370-2693
10.1016/j.physletb.2008.05.037
WOS:000257627200001
Autor
Kansas State University
Univ Buenos Aires
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Federal do ABC (UFABC)
Universidade Estadual Paulista (Unesp)
McGill Univ
Univ Alberta
Simon Fraser Univ
York Univ
Univ Sci & Technol China
Universidad de los Andes
Charles Univ Prague
Czech Tech Univ
Acad Sci Czech Republic
Univ San Francisco
Univ Clermont Ferrand
Univ Grenoble 1
Univ Aix Marseille 2
Univ Paris 11
Univ Paris 06
Univ Paris 07
CEA
Univ Haute Alsace
Univ Strasbourg 1
Univ Lyon
Univ Lyon 1
RWTH Aachen University
Univ Bonn
Univ Freiburg
Johannes Gutenberg Univ Mainz
Univ Munich
Univ Wuppertal
Panjab Univ
University of Delhi
Tata Inst Fundamental Res
Univ Coll Dublin
Korea University
Sungkyunkwan Univ
CINVESTAV
Univ Amsterdam
FOM Inst NIKHEF
Radboud Univ Nijmegen
Joint Inst Nucl Res
Institute for Theoretical and Experimental Physics (ITEP)
Moscow MV Lomonosov State Univ
Inst High Energy Phys
Petersburg Nucl Phys Inst
Uppsala Univ
Stockholm Univ
Royal Inst Technol
Lund Univ
University of Lancaster
Univ London Imperial Coll Sci Technol & Med
University of Manchester
University of Arizona
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Lawrence Berkeley Natl Lab
Calif State Univ Fresno
University of California, Riverside (UCR)
Florida State University
Fermilab Natl Accelerator Lab
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Brookhaven Natl Lab
Langston Univ
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Resumen
We present a search for the pair production of scalar top quarks, (t) over tilde, using 995 pb(-1) of data collected in p (p) over bar collisions with the Dempty set detector at the Fermilab Tevatron Collider at root s = 1.96 TeV. Both scalar top quarks are assumed to decay into a charm quark and a neutralino ((chi) over tilde (0)(1)), where (chi) over tilde (0)(1) is the lightest supersymmetric particle. This leads to a final state with two acoplanar charm jets and missing transverse energy. We find the yield of such events to be consistent with the standard model expectation, and exclude sets of (t) over tilde and (chi) over tilde (0)(1) masses at the 95% C.L. that substantially extend the domain excluded by previous searches. Published by Elsevier B.V.