Evidence For WW Production From Double-Parton İnteractions İn Proton-Proton Collisions At Root s=13 TeV

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Küçük Resim

Tarih

2020

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

CMS Collaboration

Erişim Hakkı

Özet

A search forWWproduction from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13 TeV. The analyzed data set corresponds to an integrated luminosity of 77.4 fb-1, collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is 1.41 +/- 0.28 (stat) +/- 0.28 (syst) pb.

Açıklama

Anahtar Kelimeler

CMS, Physics, W production

Kaynak

WoS Q Değeri

Q2

Scopus Q Değeri

Cilt

Sayı

Künye

European Physıcal Journal C 80,(1), 2020