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Title
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Measurement of masses in the system by kinematic endpoints in pp collisions at
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for t (t) over bar events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb(-1) collected by the CMS experiment in pp collisions at root s = 7 TeV. The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of M-t = 173.9 +/- 0.9 (stat.)=(+ 1.7)(-2.1) (syst.) GeV is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2013
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-013-2494-7
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Volume/pages
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73
:7
(2013)
, p. 1-28
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Article Reference
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2494
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ISI
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000322575300019
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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