Measurement of b-hadron pair production with the ATLAS detector in proton-proton collisions at root s=8 TeV
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Dosyalar
Tarih
2017-11-10
Yazarlar
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SPRINGER
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A measurement of b-hadron pair production is presented, based on a data set corresponding to an integrated luminosity of 11.4 fb(-1) of proton-proton collisions recorded at root s = 8TeV with the ATLAS detector at the LHC. Events are selected in which a b-hadron is reconstructed in a decay channel containing J = psi -> mu mu, and a second b-hadron is reconstructed in a decay channel containing a muon. Results are presented in a fiducial volume de fined by kinematic requirements on three muons based on those used in the analysis. The fiducial cross section is measured to be 17.7 +/- 0.1(stat.) +/- 2.0(syst.) nb. A number of normalised differential cross sections are also measured, and compared to predictions from the PYTHIA8, HERWIG++, MADGRAPH5_AMC@NLO+PYTHIA8 and SHERPA event generators, providing new constraints on heavy flavour production.
Açıklama
Anahtar Kelimeler
B physics, Hadron-Hadron scattering (experiments)
Kaynak
JOURNAL OF HIGH ENERGY PHYSICS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
