Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at √s=8 TeV
A first search for same-sign WW production via double-parton scattering is performed based on proton-proton collision data at a center-of-mass energy of 8 TeV using dimuon and electron-muon final states. The search is based on the analysis of data corresponding to an integrated luminosity of 19.7...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65019/ http://irep.iium.edu.my/65019/ http://irep.iium.edu.my/65019/ http://irep.iium.edu.my/65019/1/65019_Constraints%20on%20the%20double-parton%20scattering%20cross_article.pdf http://irep.iium.edu.my/65019/2/65019_Constraints%20on%20the%20double-parton%20scattering%20cross_scopus.pdf |
| Summary: | A first search for same-sign WW production via double-parton scattering is
performed based on proton-proton collision data at a center-of-mass energy of 8 TeV using
dimuon and electron-muon final states. The search is based on the analysis of data
corresponding to an integrated luminosity of 19.7 fb−1
. No significant excess of events is
observed above the expected single-parton scattering yields. A 95% confidence level upper
limit of 0.32 pb is set on the inclusive cross section for same-sign WW production via
the double-parton scattering process. This upper limit is used to place a 95% confidence
level lower limit of 12.2 mb on the effective double-parton cross section parameter, closely
related to the transverse distribution of partons in the proton. This limit on the effective
cross section is consistent with previous measurements as well as with Monte Carlo event
generator predictions. |
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