Projecten per jaar
Abstract
Ratios of cross sections, σðZ þ c jetsÞ=σðZ þ jetsÞ, σðZ þ b jetsÞ=σðZ þ jetsÞ, and σðZ þ c jetsÞ=
σðZ þ b jetsÞ in the associated production of a Z boson with at least one charm or bottom quark jet are
measured in proton-proton collisions at ffiffi
s p ¼ 13 TeV. The data sample, collected by the CMS experiment
at the CERN LHC, corresponds to an integrated luminosity of 35.9 fb−1, with a fiducial volume of
pT > 30 GeV and jηj < 2.4 for the jets, where pT and η represent transverse momentum and
pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or
muons with pT > 25 GeV and jηj < 2.4, and the dilepton mass satisfies 71 < mZ < 111 GeV. The
measured values are σðZ þ c jetsÞ=σðZ þ jetsÞ ¼ 0.102 0.002 0.009, σðZ þ b jetsÞ=σðZ þ jetsÞ ¼
0.0633 0.0004 0.0015, and σðZ þ c jetsÞ=σðZ þ b jetsÞ ¼ 1.62 0.03 0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are
compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics
calculations. These are the first measurements of the cross section ratios at 13 TeV
σðZ þ b jetsÞ in the associated production of a Z boson with at least one charm or bottom quark jet are
measured in proton-proton collisions at ffiffi
s p ¼ 13 TeV. The data sample, collected by the CMS experiment
at the CERN LHC, corresponds to an integrated luminosity of 35.9 fb−1, with a fiducial volume of
pT > 30 GeV and jηj < 2.4 for the jets, where pT and η represent transverse momentum and
pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or
muons with pT > 25 GeV and jηj < 2.4, and the dilepton mass satisfies 71 < mZ < 111 GeV. The
measured values are σðZ þ c jetsÞ=σðZ þ jetsÞ ¼ 0.102 0.002 0.009, σðZ þ b jetsÞ=σðZ þ jetsÞ ¼
0.0633 0.0004 0.0015, and σðZ þ c jetsÞ=σðZ þ b jetsÞ ¼ 1.62 0.03 0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are
compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics
calculations. These are the first measurements of the cross section ratios at 13 TeV
Datum van beschikbaarheid | 30 jul 2020 |
---|---|
Uitgever | HEPData |
Format
- Format
-
-
iBOF/23/074: Ontsluiten van de charm-Higgs koppeling bij de LHC
D'Hondt, J., Lowette, S., Van Mechelen, P. & Dobur, D.
1/01/23 → 31/12/26
Project: Fundamenteel
-
Onderzoekersoutput
- 1 Article
-
Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at s =13 TeV
Collaboration, CMS., Blekman, F., Bols, E. S., Chhibra, S. S., D'Hondt, J., De Clercq, J., Lontkovskyi, D., Lowette, S., Marchesini, I., Moortgat, S., Python, Q., Skovpen, K., Tavernier, S., Van Doninck, W., Van Mulders, P., Burns, D. & Burns, D. J. P., 1 aug 2020, In: Phys. Rev. D. 102, 3, 29 blz., 032007.Onderzoeksoutput: Article › peer review
Open AccessBestand15 Citaten (Scopus)107 Downloads (Pure)