Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at s√=8s=8 TeV
Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at s√=8s=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 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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Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
February 2018
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Belyaev, A.
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Sirunyan, A.M. and Tumasyan, A.
,
The CMS Collaboration
(2018)
Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at s√=8s=8 TeV.
Journal of High Energy Physics, 2018 (32), .
(doi:10.1007/JHEP02(2018)032).
Abstract
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.
Text
10.1007%2FJHEP02(2018)032
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Accepted/In Press date: 24 January 2018
e-pub ahead of print date: 6 February 2018
Published date: February 2018
Identifiers
Local EPrints ID: 418672
URI: http://eprints.soton.ac.uk/id/eprint/418672
ISSN: 1029-8479
PURE UUID: 89f34b6e-5374-4be5-aafd-672d86c9929a
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Date deposited: 16 Mar 2018 17:30
Last modified: 05 Oct 2024 01:43
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Author:
A.M. Sirunyan
Author:
A. Tumasyan
Corporate Author: The CMS Collaboration
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