Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at s√=7 TeV

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Issue Date
2013-10-10Author
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Kenny, R. P., III
Murray, Michael J.
Noonan, Danny
Sanders, Stephen J.
Stringer, Robert W.
Publisher
Springer Berlin Heidelberg
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at s√=7 TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb(−1). The cross section is measured for the ℓℓjj (ℓ = e, μ) final state in the kinematic region m(ℓℓ) > 50 GeV, m(jj) > 120 GeV, transverse momenta p(j)(T)>25 GeV and pseudorapidity |η(j)| < 4.0. The measurement, combining the muon and electron channels, yields σ = 154 ± 24 (stat.) ± 46 (exp. syst.) ± 27 (th. syst.) ± 3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.
Description
This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP10%282013%29062.
ISSN
1029-8479Collections
Citation
S. Chatrchyan et al. (2013). "Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at s√=7 TeV." Journal of High Energy Physics, 10(2013):062. http://www.dx.doi.org/10.1007/JHEP10(2013)062.
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