Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14246
Title: Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at p s=13 TeV
Authors: Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Dragicevic, M.
Del Valle, Escalante
Keywords: (P)Over-Bar-P Collisions
Measuring Masses
Lhc
Physics
Events
Probe
Publisher: Amer Physical Soc
Abstract: The first observation of the production of (WW +/-)-W-+/- bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138 fb(-1 )recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 +/- 11.2(stat)( -8.6)(+9.5)(syst) +/- 12.1(model) fb, whereas the measured fiducial cross section is 6.28 +/- 0.81(stat) +/- 0.69(syst) +/- 0.37(model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.
URI: https://doi.org/10.1103/PhysRevLett.131.091803
https://hdl.handle.net/11147/14246
ISSN: 0031-9007
1079-7114
Appears in Collections:WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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