Электронный каталог

Статья

Tumasyan, A.
Observation of Same-Sign WW Production from Double Parton Scattering in Proton-Proton Collisions at *%s = 13  TeV / A.Tumasyan, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, N.Krasnikov, M.Finger, M.Finger Jr., Z.Tsamalaidze, [CMS Collab.] // Physical Review Letters [Electronic resource]. – 2023. – Vol.131, No.9. – P. 091803. – URL: https://doi.org/10.1103/PhysRevLett.131.091803. – Bibliogr.: 93.

The first observation of the production of 𝑊&sup(*()⁢𝑊&sup(*()± 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)&sup(⁢ +9.5) &sub(−8.6)⁢(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.



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6е2 - Промежуточные бозоны
ОИЯИ = ОИЯИ (JINR)2023