The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,asstandard Model measurements ...
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The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAs Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAs *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.
some interferon beta (IFNβ)-treated patients with multiple sclerosis develop antibody-mediated decreased bioactivity with resultant loss of therapeutic effect. The authors developed realtime multiplex reverse transcr...
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some interferon beta (IFNβ)-treated patients with multiple sclerosis develop antibody-mediated decreased bioactivity with resultant loss of therapeutic effect. The authors developed realtime multiplex reverse transcriptase PCR to measure expression of three IFNβ-inducible genes to directly assess IFNβbioactivity in patients with neutralizing antibodies (NAbs). The three genes responded in tandem. Correlation of NAb level with bioactivity at low/ moderate NAb levels was poor, indicating that for such patients, direct measurement of IFNβbioactivity is most reliable.
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