Электронный каталог

Статья

Hayrapetyan, A.
Search for ZZ and ZH Production in the bb^-bb^- Final State Using Proton-Proton Collisions at *%s=13 TeV / A.Hayrapetyan, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, N.Krasnikov, 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, Z.Tsamalaidze, [CMS Collab.] // The European Physical Journal C [Electronic resource]. – 2024. – Vol. 84, No. 7. – P. 712. – URL: https://doi.org/10.1140/epjc/s10052-024-13021-z. – Bibliogr.: 79.

A search for ZZ and ZH production in the b¯bb¯b final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton- proton collisions corresponding to an integrated luminosity of 133 fb−1 collected at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. The analysis intro- duces several novel techniques for deriving and validating a multi-dimensional background model based on control sam- ples in data. A multiclass multivariate classifier customized for the b¯bb¯b final state is developed to derive the background model and extract the signal. The data are found to be con- sistent, within uncertainties, with the SM predictions. The observed (expected) upper limits at 95% confidence level are found to be 3.8 (3.8) and 5.0 (2.9) times the SM prediction for the ZZ and ZH production cross sections, respectively



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков