Research output: Contribution to journal › Article › peer-review
Measurement of associated Z + charm production in proton–proton collisions at √s=8TeV. / The CMS collaboration ; Блинов, Владимир Евгеньевич.
In: European Physical Journal C, Vol. 78, No. 4, 287, 09.04.2018, p. 287.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Measurement of associated Z + charm production in proton–proton collisions at √s=8TeV
AU - The CMS collaboration
AU - Sirunyan, A. M.
AU - Tumasyan, A.
AU - Adam, W.
AU - Ambrogi, F.
AU - Asilar, E.
AU - Bergauer, T.
AU - Brandstetter, J.
AU - Brondolin, E.
AU - Dragicevic, M.
AU - Erö, J.
AU - Flechl, M.
AU - Friedl, M.
AU - Frühwirth, R.
AU - Ghete, V. M.
AU - Grossmann, J.
AU - Hörmann, N.
AU - Hrubec, J.
AU - Jeitler, M.
AU - König, A.
AU - Krätschmer, I.
AU - Liko, D.
AU - Madlener, T.
AU - Matsushita, T.
AU - Mikulec, I.
AU - Pree, E.
AU - Rabady, D.
AU - Rad, N.
AU - Rohringer, H.
AU - Schieck, J.
AU - Spanring, M.
AU - Spitzbart, D.
AU - Strauss, J.
AU - Waltenberger, W.
AU - Wittmann, J.
AU - Wulz, C. E.
AU - Zarucki, M.
AU - Chekhovsky, V.
AU - Mossolov, V.
AU - Gonzalez, J. Suarez
AU - Shumeiko, N.
AU - De Wolf, E. A.
AU - Janssen, X.
AU - Lauwers, J.
AU - Van De Klundert, M.
AU - Van Haevermaet, H.
AU - Van Mechelen, P.
AU - Van Remortel, N.
AU - Van Spilbeeck, A.
AU - Skovpen, Y.
AU - Shtol, D.
AU - Блинов, Владимир Евгеньевич
PY - 2018/4/9
Y1 - 2018/4/9
N2 - A 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 , 7125GeV 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 predictions.
AB - A 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 , 7125GeV 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 predictions.
KW - CMS
KW - Heavy flavour
KW - Physics
KW - SMP
KW - Standard model physics
KW - Vector boson
KW - HADRON COLLIDERS
UR - http://www.scopus.com/inward/record.url?scp=85045152797&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-018-5752-x
DO - 10.1140/epjc/s10052-018-5752-x
M3 - Article
C2 - 31007580
AN - SCOPUS:85045152797
VL - 78
SP - 287
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 4
M1 - 287
ER -
ID: 12437961