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Measurements of charge and CP asymmetries in b-hadron decays using top-quark events collected by the ATLAS detector in pp collisions at root s=8 TeV
KTH, Skolan för teknikvetenskap (SCI), Fysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0003-3867-0336
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
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Rekke forfattare: 28412017 (engelsk)Inngår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, nr 2, artikkel-id 071Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Same-and opposite-sign charge asymmetries are measured in lepton+ jets t (t) over bar events in which a b-hadron decays semileptonically to a soft muon, using data corresponding to an integrated luminosity of 20.3 fb(-1) from proton-proton collisions at a centre-of-mass energy of root s = 8TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. The charge asymmetries are based on the charge of the lepton from the top-quark decay and the charge of the soft muon from the semileptonic decay of a b -hadron and are measured in a fi ducial region corresponding to the experimental acceptance. Four CP asymmetries (one mixing and three direct) are measured and are found to be compatible with zero and consistent with the Standard Model.

sted, utgiver, år, opplag, sider
Springer, 2017. nr 2, artikkel-id 071
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URN: urn:nbn:se:kth:diva-209046DOI: 10.1007/JHEP02(2017)071ISI: 000394374500003Scopus ID: 2-s2.0-85013481717OAI: oai:DiVA.org:kth-209046DiVA, id: diva2:1110014
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QC 20170615

Tilgjengelig fra: 2017-06-15 Laget: 2017-06-15 Sist oppdatert: 2019-12-04bibliografisk kontrollert

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Kastanas, KonstatinosLund-Jensen, BengtSidebo, EdvinStrandberg, Jonas
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