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Measurement of the c-jet mistagging efficiency in t(t)over-bar events using pp collision data at root s=13 TeV collected with the ATLAS detector

Aad, G. (author)
Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
Asimakopoulou, Eleni M. (author)
Uppsala universitet,Högenergifysik
Bergeås Kuutmann, Elin, 1980- (author)
Uppsala universitet,Högenergifysik
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Brenner, Richard (author)
Uppsala universitet,Högenergifysik
Ekelöf, Tord (author)
Uppsala universitet,FREIA
Ellajosyula, Venugopal (author)
Uppsala universitet,Högenergifysik
Ellert, Mattias (author)
Uppsala universitet,Högenergifysik
Ferrari, Arnaud, 1973- (author)
Uppsala universitet,Högenergifysik
Gonzalez Suarez, Rebeca (author)
Uppsala universitet,Högenergifysik
Mathisen, Thomas (author)
Uppsala universitet,Högenergifysik
Ördek, Serhat (author)
Uppsala universitet,Högenergifysik
Sunneborn Gudnadottir, Olga (author)
Uppsala universitet,Högenergifysik
Zwalinski, L. (author)
CERN, Geneva, Switzerland.
Leopold, Alexander (author)
KTH,Fysik
Lundberg, Olof (author)
KTH,Partikel- och astropartikelfysik
Lund-Jensen, Bengt (author)
KTH,Partikel- och astropartikelfysik
Ohm, Christian (author)
KTH,Partikel- och astropartikelfysik
Ripellino, Giulia (author)
KTH,Partikel- och astropartikelfysik
Shaheen, Rabia (author)
KTH,Partikel- och astropartikelfysik
Shope, David R. (author)
KTH,Partikel- och astropartikelfysik
Strandberg, Jonas (author)
KTH,Partikel- och astropartikelfysik
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Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France Högenergifysik (creator_code:org_t)
2022-01-31
2022
English.
In: European Physical Journal C. - : Springer. - 1434-6044 .- 1434-6052. ; 82:1
Related links:
https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
https://link.springe...
https://urn.kb.se/re...
https://doi.org/10.1...
https://urn.kb.se/re...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • A technique is presented to measure the efficiency with which c-jets are mistagged as b-jets (mistagging efficiency) using t (t) over bar events, where one of theW bosons decays into an electron or muon and a neutrino and the other decays into a quark-antiquark pair. The measurement utilises the relatively large and known W -> cs branching ratio, which allows ameasurement to be made in an inclusive c-jet sample. The data sample used was collected by the ATLAS detector at root s = 13 TeV and corresponds to an integrated luminosity of 139 fb(-1). Events are reconstructed using a kinematic likelihood technique which selects the mapping between jets and t (t) over bar decay products that yields the highest likelihood value. The distribution of the b-tagging discriminant for jets from the hadronic W decays in data is compared with that in simulation to extract the mistagging efficiency as a function of jet transverse momentum. The total uncertainties are in the range 3-17%. The measurements generally agree with those in simulation but there are some differences in the region corresponding to the most stringent b-jet tagging requirement.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

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art (subject category)

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