منابع مشابه
Strategies for b-Tagging Calibration using data at CMS
In experimental high energy physics, the capability to tag jets produced from bottom (b) quarks has become a necessity. Many Standard Model and new physics processes have a b-jet signature, including top quarks, the Higgs boson, and supersymmetry. Algorithms used to identify b-jets utilize either the lifetime of b-hadrons, or the large rate of decay to leptons, compared to hadrons from charm (c...
متن کاملAlgorithms for b-Jet Identification at CMS
A comprehensive set of algorithms to identify jets originating from b-quarks has been developed within the CMS Collaboration. The fundamental properties of B-hadrons leading to observables which can be exploited for b-tagging are discussed and an overview of the basic concepts of the algorithms is given, followed by a comparison of their performance.
متن کاملSearch for supersymmetry in top final states at CMS
A search for SUSY using the top quark plus missing transverse energy (MET), in a low mass mSUGRA test point is performed. A two–constraints kinematic fit is utilized to extract the top quark, either b-jet the ones that is recognizable or it is not recognizable. It is shown that for point LM1, for the former situation, a 5σ excess can be achieved with 30 pb-1 and for the latter situation, it can...
متن کاملB-Tagging at CDF and DØ Lessons for LHC
The identification of jets resulting from the fragmentation and hadronization of b quarks is an important part of high-pT collider physics. The methods used by the CDF and DØ collaborations to perform this identification are described, including the calibration of the efficiencies and fake rates. Some thoughts on the application of these methods in the LHC environment are also presented.
متن کاملb-Tagging Algorithms and their Performance at ATLAS
The ability to identify jets containing B hadrons is important for the high-pT physics program of a general-purpose experiment such as ATLAS. b-tagging is in particular useful for selecting very pure top quark samples, for studying standard model or supersymmetric Higgs bosons which couple preferably to heavy objects, for vetoing backgrounds for several physics channels and finally for searchin...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2012
ISSN: 2100-014X
DOI: 10.1051/epjconf/20122812055