Measurement of the Z/?*+b-jet cross section in pp collisions at ?s = 7 TeV
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Verlag
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The production of b jets in association with a Z/?*boson is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7TeV and recorded by the CMS detector. The inclusive cross section for Z/?*+b-jet production is measured in a sample corresponding to an integrated luminosity of 2.2 fb-1. The Z/?*+b-jet cross section with Z/?*›ll (where l l = ee or µ µ) for events with the invariant mass 60 < Ml l < 120 GeV, at least one b jet at the hadron level with pT > 25 GeV and |?|< 2:1, and a separation between the leptons and the jets of ?R > 0:5 is found to be 5:84±0:08 (stat:) ±0:72 (syst:) -0:55+0:25 (theory) pb. The kinematic properties of the events are also studied and found to be in agreement with the predictions made by the MadGraph event generator with the parton shower and the hadronisation performed by pythia.
Açıklama
Anahtar Kelimeler
Hadron-Hadron Scattering
Kaynak
Journal of High Energy Physics
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
2012
Sayı
6
