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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorBhopatkar, Vallary
dc.contributor.authorColafranceschi, Stefano
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorNoonan, Daniel
dc.contributor.authorRoy, Tuhin S.
dc.contributor.authorYumiceva, F.
dc.date.accessioned2019-03-07T16:42:16Z
dc.date.available2019-03-07T16:42:16Z
dc.date.issued2018-04-01
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., . . . CMS Collaboration. (2018). Measurement of associated Z + charm production in proton–proton collisions at √s=8TeV. European Physical Journal C, 78(4) doi:10.1140/epjc/s10052-018-5752-xen_US
dc.identifier.urihttp://hdl.handle.net/11141/2709
dc.description.abstractA study of the associated production of a Z boson and a charm quark jet (Z + c), and a comparison to production with a b quark jet (Z + b), in p p collisions at a centre-of-mass energy of 8TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7fb-1, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with pTℓ>20GeV, | ηℓ| < 2.1 , 71<m111GeV, and heavy flavour jets with pTjet>25GeV and | ηjet| < 2.5. The Z + c production cross section is measured to be σ(pp→Z+c+X)B(Z→ℓ+ℓ-)=8.8±0.5(stat)±0.6(syst)pb. The ratio of the Z + c and Z + b production cross sections is measured to be σ(pp→Z+c+X)/σ(pp→Z+b+X)=2.0±0.2(stat)±0.2(syst). The Z + c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictionsen_US
dc.language.isoen_USen_US
dc.rightsThis is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.rights.urihttps://s100.copyright.com/AppDispatchServlet?publisherName=SpringerNature&orderBeanReset=true&orderSource=SpringerLink&copyright=CERN+for+the+benefit+of+the+CMS+collaboration&author=A.+M.+Sirunyan%2C+A.+Tumasyan%2C+W.+Adam+et+al&issueNum=4&contentID=10.1140%2Fepjc%2Fs10052-018-5752-x&publicationDate=2018&startPage=287&volumeNum=78&title=Measurement+of+associated+Z+%2B+charm+production+in+proton%E2%80%93proton+collisions+at+%24%24%5Csqrt%7Bs%7D+%3D+8%24%24s%3D8%24%24%5C%2C%5Ctext+%7BTeV%7D%24%24TeV&imprint=CERN+for+the+benefit+of+the+CMS+collaboration&publication=1434-6044&oa=CC+BYen_US
dc.titleMeasurement of associated Z + charm production in proton–proton collisions at √s=8TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1140/epjc/s10052-018-5752-x


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